CN105375653A - Wireless-charging transmitting device and method - Google Patents
Wireless-charging transmitting device and method Download PDFInfo
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Abstract
The invention provides a wireless-charging transmitting device and method. Microwave energy signals generated in the form of high-frequency current by a microwave signal generation module are transmitted to load regulating and controlling modules corresponding to antenna units via the same feeding module, so that the different antenna units can obtain microwave energy signals from signals generated by the same microwave signal generation module. Therefore, compared with the prior art, in which independent transmitting links are arranged for different antenna units respectively, the wireless-charging transmitting device employs fewer microwave signal generation modules, thus simplifying the circuit and reducing the system cost. Besides, the directional diagram of the antenna units meets users' requirements on antenna directional diagram by virtue of the load regulating and controlling modules.
Description
Technical field
The invention belongs to wireless charging technical field, in particular, particularly relate to a kind of wireless charging emitter and method.
Background technology
Common power is powered to be connected by wires such as power line and holding wires and just can be completed, and this supply power mode cannot break away from the constraint of wire, and it is dangerous to there is the electric discharge that conductive contact, friction etc. produce, for this reason wireless charging method application and giving birth to.Current wireless charging method principle can be divided into 3 classes: one is way of electromagnetic induction; Two is magnetic resonance modes; Three is microwave power transmission modes; Depend on current technical merit, the charging distance of first two mode more than 1 meter, even can not need contact charging, namely first two mode principle is still and closely charges.And the third charging modes can launched microwave energy signal to by charging device, therefore its charging distance is comparatively far away, be uniquely a kind of at present can the mode of medium and long distance wireless charging.
When adopting microwave power transmission mode to carry out wireless charging, need by means of microwave radio commu system, wherein the aerial array of microwave radio commu system comprises multiple antenna element, and need for the independent feed of each antenna element, namely each antenna element is to there being independently transmitting chain (comprising microwave signal generation module and feeder line), be antenna element feed by each transmitting chain (comprising microwave signal generation module and feeder line), therefore when the quantity of antenna element in aerial array increases, corresponding also needs increases transmitting chain quantity, namely microwave signal generation module is increased, increase circuit complexity and system cost.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of wireless charging emitter and method, for reducing circuit complexity and installation cost.
The invention provides a kind of wireless charging emitter, described device comprises: comprise the array antenna module of multiple antenna element, with antenna element channel estimation module, control module, microwave signal generation module, power feeding module and at least regulate and control module with an antenna element load one to one one to one;
Described array antenna module, for being received the pilot signal of spacing wireless signal form by each antenna element, and the pilot signal of described spacing wireless signal form to be converted to the pilot signal of high-frequency current form, and for the microwave energy signal of high-frequency current form being converted to by each antenna element the microwave energy signal transmission of spacing wireless signal form;
Each described channel estimation module, for the pilot signal based on the described high-frequency current form after corresponding antenna element conversion, obtains channel condition information;
Described control module, for based on described channel condition information and beamforming algorithm, generates the control signal controlling each load regulation and control module;
Described microwave signal generation module, for generating the microwave energy signal of high-frequency current form, and is transferred to each described load regulation and control module by described power feeding module;
Each described load regulation and control module, for based on each self-corresponding described control signal, adjusts the directional diagram of corresponding antenna element.
Preferably, described load regulation and control module, for controlling the load variations of described load regulation and control module based on the control signal of self correspondence, change with load variations with the signal parameter making described load regulate and control the microwave energy signal of the high-frequency current form that module exports.
Preferably, described load regulation and control module comprises: circuit for regulating and controlling, circulator or coupler;
Described circuit for regulating and controlling, under the effect of described control signal, adjusts the impedance of variable-impedance device in described circuit for regulating and controlling;
Described circulator or described coupler, for receiving the microwave energy signal of the high-frequency current form that described microwave signal generation module generates, and by the microwave energy Signal transmissions of generated high-frequency current form to circuit for regulating and controlling, the impedance of signal parameter with variable-impedance device in described circuit for regulating and controlling of the microwave energy signal of generated high-frequency current form is changed, and the microwave energy signal of the high-frequency current form after being changed by signal parameter exports to corresponding antenna element.
Preferably, described channel estimation module comprises: Signal Pretreatment device, zero intermediate frequency chip, low precision analog to digital converter and baseband chip;
Described Signal Pretreatment device, for carrying out preliminary treatment to the pilot signal of described high-frequency current form;
Described zero intermediate frequency chip, for being converted to base-band analog signal by pretreated pilot signal;
Described analog to digital converter, for being converted to baseband digital signal by described base-band analog signal;
Described baseband chip, for carrying out channel estimating to described baseband digital signal, will obtain described channel condition information.
Preferably, described microwave signal generation module comprises oscillator, power amplifier and circulator;
Described oscillator, for generating the microwave energy signal of high-frequency current form, and exports described circulator to after amplifying via described power amplifier;
Described circulator, for exporting the microwave energy signal of described high-frequency current form, and feeds back in described power amplifier with the reflected signal of described power feeding module joint for forbidding.
Preferably, described power feeding module comprises: the first power splitter and multiple second power splitter, and the quantity of the output signal of multiple second power splitter is identical with the quantity of described antenna element;
The microwave energy signal that described first power splitter is used for the high-frequency current form generated by described microwave signal generation module all gives described second power splitter;
The output of each second power splitter connects a load regulation and control module, after again being divided equally by the microwave energy signal of the high-frequency current form after dividing equally, export to described load regulation and control module.
Preferably, described power feeding module comprises power splitter, exports to corresponding load regulation and control module after dividing equally for the microwave energy signal of the high-frequency current form described microwave signal generation module generated.
The present invention also provides a kind of wireless charging launching technique, and described method comprises:
Received the pilot signal of spacing wireless signal form by each antenna element in aerial array, and the pilot signal of described spacing wireless signal form is converted to the pilot signal of high-frequency current form;
Based on the pilot signal of described high-frequency current form, obtain channel condition information;
Based on described channel condition information and beamforming algorithm, generate control signal;
Based on the directional diagram of described control signal adjustment antenna element;
By each antenna element, the microwave energy signal of high-frequency current form is converted to the microwave energy signal transmission of spacing wireless signal form.
Preferably, the described directional diagram based on described control signal adjustment antenna element, comprising:
Based on the load variations of described control signal control load regulation and control module, change with load variations with the signal parameter making described load regulate and control the microwave energy signal of the high-frequency current form that module exports, wherein said microwave energy signal is generated by microwave signal generation module, and is transferred to corresponding load regulation and control module by power feeding module.
Preferably, the described load variations based on described control signal control load regulation and control module, changes with load variations with the signal parameter making described load regulate and control the microwave energy signal of the high-frequency current form that module exports, comprising:
Under the effect of described control signal, adjust the impedance of variable-impedance device in the circuit for regulating and controlling of described load regulation and control module;
The microwave energy Signal transmissions received by the circulator of described load regulation and control module, to circuit for regulating and controlling, makes the impedance of signal parameter with variable-impedance device in described circuit for regulating and controlling of the microwave energy signal of generated high-frequency current form change.
Compared with prior art, technique scheme tool provided by the invention has the following advantages:
In technique scheme provided by the invention, the microwave energy signal of the high-frequency current form of a microwave signal generation module generation can be transferred to the load corresponding with each antenna element by same power feeding module and regulate and control module, make different antennae unit can obtain microwave energy signal from same power feeding module, relative in prior art, independently microwave signal generation module is set respectively for different antennae unit, save microwave signal generation module quantity, thus simplify circuit, reduction system cost.And make the directional diagram of antenna element meet the requirement of user to antenna pattern by load regulation and control module.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of the wireless charging emitter that the embodiment of the present invention provides;
Fig. 2 is the structural representation of channel estimation module in the wireless charging emitter that provides of the embodiment of the present invention;
Fig. 3 is the structural representation of power feeding module in the wireless charging emitter that provides of the embodiment of the present invention;
Fig. 4 is the structural representation of load regulation and control module in the wireless charging emitter that provides of the embodiment of the present invention;
Fig. 5 is the structural representation of microwave signal generation module in the wireless charging emitter that provides of the embodiment of the present invention;
Fig. 6 is the flow chart of the wireless charging launching technique that the embodiment of the present invention provides.
Embodiment
For making the object of the embodiment of the present invention, technical scheme and advantage clearly, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Refer to Fig. 1, it illustrates a kind of structural representation of the wireless charging emitter that the embodiment of the present invention provides, can comprise: array antenna module 11, channel estimation module 12, control module 13, microwave signal generation module 14, power feeding module 15 and load regulation and control module 16.
Wherein, array antenna module 11 comprises multiple antenna element, the pilot signal of spacing wireless signal form can be received by each antenna element, and the pilot signal of spacing wireless signal form is converted to the pilot signal of high-frequency current form, and the microwave energy signal of high-frequency current form is converted to the microwave energy signal transmission of spacing wireless signal form by each antenna element.
That is, signal has two kinds of forms in embodiments of the present invention, one is spacing wireless signal form, another kind is high-frequency current form, when the signal in the external world is transferred to wireless charging emitter inside by each antenna element in array antenna module 11, need the signal signal of spacing wireless signal form being converted to high-frequency current form, this is because transmit for main with high-frequency current form at wireless charging emitter internal signal.And when the signal of wireless charging emitter inside is sent to the external world (outside of wireless charging emitter) by each antenna element in array antenna module 11, then need the signal signal of high-frequency current form being converted to spacing wireless signal form, this is because transmit for main with spacing wireless signal form in outer signals.
Channel estimation module 12, for the pilot signal based on the high-frequency current form after corresponding antenna element conversion, obtains channel condition information.Channel estimation module 12 can adopt existing channel algorithm for estimating to obtain channel condition information in embodiments of the present invention, as adopted LS (LeastSquare, least square method) algorithm, be namely used for calculating the phase place of channel status or the channel estimation method of amplitude at present and all can be applied in channel estimation module 12.
For obtaining channel condition information, wherein channel estimation module 12 can adopt structure shown in Fig. 2, can comprise Signal Pretreatment device, zero intermediate frequency chip, analog to digital converter and baseband chip.
Wherein Signal Pretreatment device, for carrying out preliminary treatment to the pilot signal of high-frequency current form, usual Signal Pretreatment device can include but not limited to filter and low noise amplifier, filter be used for filtering high-frequency current form pilot signal in noise etc., and low noise amplifier can amplify the pilot signal of high-frequency current form and in amplification process as far as possible the noise of step-down amplifier self on the impact of pilot signal.Certainly except above-mentioned filter and low noise amplifier, can also circulator being comprised in Signal Pretreatment device, feeding back in antenna element with the reflected signal of Signal Pretreatment device joint for forbidding.
Zero intermediate frequency chip, for pretreated pilot signal is converted to base-band analog signal, and by analog to digital converter, base-band analog signal is converted to baseband digital signal, after such baseband digital signal is transferred to baseband chip, by baseband chip, channel estimating is carried out to baseband digital signal, obtain channel condition information.Baseband chip is when carrying out channel estimating to baseband digital signal, existing channel algorithm for estimating can be adopted to obtain channel condition information, as above-mentioned LS algorithm, namely be used for calculating the phase place of channel status or the channel estimation method of amplitude at present all can be applied in baseband chip, and baseband chip can adopt the process chip such as single-chip microcomputer or FPGA (Field-ProgrammableGateArray, field programmable gate array).
From the alternate configurations of above-mentioned channel estimation module 12, its mode adopting mixing chip, intermediate frequency chip and baseband chip to combine relative to conventional receiver link, the receiver of the embodiment of the present invention adopts zero intermediate frequency chip, analog to digital converter and baseband chip just can the reception of settling signal and channel status to estimate, the basis of the enough performances of guarantee reduces receiver complexity and volume.
This is because general radio communication, as 4G/3G, WIFI (WirelessFidelity, wireless connections) etc. not only need obtain channel condition information, also need the self-contained information of pilot signal, this just needs each device in receiver also to need to carry out other process to pilot signal after estimating the pilot signal channel received, and the embodiment of the present invention only needs to estimate channel condition information from pilot signal, such embodiment of the present invention can save mixing chip and intermediate frequency chip in receiver, thus the complexity of channel estimation module 12 and volume are reduced, and above-mentioned analog to digital converter adopts low precision analog to digital converter just can meet the requirement obtaining channel condition information, and the cost of low precision analog to digital converter is lower, and then the cost of channel estimation module 12 can be reduced.Inventor obtains through test of many times, and in embodiments of the present invention, the figure place of low precision analog to digital converter can meet the requirement of channel condition information below 8.
Here it should be noted that, the circulator in Fig. 2 is used for switching between reception and transmitting, and it can also adopt other devices to replace, as radio-frequency (RF) switch.Why need with antenna contact position tool for mounting standby receives and launches the device switched be because of: transmitting and receiving in the embodiment of the present invention is follow antenna with same, and transmitting and receiving can not be carried out simultaneously, point time is needed to carry out, such as: within the 1st second, receive, time below launches, recirculation! And the characteristic of circulator determines that it is not when needing control signal to control, just can realize receive and launch do not interfere with each other, and radio-frequency (RF) switch need independently control signal ensure transmitting and receiving do not interfere with each other.And for above-mentioned channel estimation module 12 can with antenna element one_to_one corresponding, the local channel estimation module 12 namely in the embodiment of the present invention can adopt structure shown in above-mentioned Fig. 2, and other channel estimation modules 12 then can take existing structure.
Control module 13, for based on channel condition information and beamforming algorithm, generates the control signal of control load regulation and control module 16.Wherein control module 13 in conjunction with beamforming algorithm and channel condition information, can obtain an initial voltage signal, and this initial voltage signal is further processed into as control signal can the voltage signal of load in control load regulation and control module 16.
Concrete control module 13 can pass through existing channel estimation method, as LS algorithm calculates channel condition information, and in conjunction with beamforming algorithm, obtain initial voltage signal, then initial voltage signal is imported in programmable power supply chip or voltage conversion circuit, the voltage signal that programmable power supply chip or voltage conversion circuit are exported can change with the change of initial voltage signal, and make the voltage signal exported be converted into the stronger voltage signal of driving force, the voltage signal exported to make control module 13 can control load regulation and control module 16 in load.Wherein programmable power supply chip or voltage conversion circuit can adopt for the chip of output voltage signal or circuit in prior art, this embodiment of the present invention are no longer introduced to the concrete form of programmable power supply chip or voltage conversion circuit.
Microwave signal generation module 14, for generating the microwave energy signal of high-frequency current form, and be transferred to each load regulation and control module 16 by power feeding module 15, load corresponding with each antenna element like this regulates and controls the microwave energy signal that module 16 all can obtain high-frequency current form from same power feeding module 15, relative in prior art, independently microwave signal generation module 14 is set respectively for different antennae unit, save microwave signal generation module 14 quantity, thus simplify circuit, reduction system cost.
In embodiments of the present invention, the microwave energy signal that module 16 all can obtain high-frequency current form from same power feeding module 15 is regulated and controled for making load corresponding to each antenna element, power feeding module 15 can select structure shown in Fig. 3, wherein power feeding module 15 comprises: the first power splitter and multiple second power splitter, and the quantity of the output signal of multiple second power splitter is identical with the quantity of antenna element; The microwave energy signal that first power splitter is used for the high-frequency current form generated by microwave signal generation module all gives the second power splitter; And the output of each second power splitter connects a load regulation and control module, such second power splitter is exported to the load that output each with it be connected and is regulated and controled module 16 after then the microwave energy signal of the high-frequency current form after dividing equally can being divided equally again, each like this load regulation and control module 16 just can from the microwave energy signal being obtained high-frequency current form by same power feeding module from same microwave signal generation module.
Power feeding module 15 shown in above-mentioned Fig. 3 designs to meet a large amount of load regulation and control module 16, if the quantity of load regulation and control module 16 is few, so power feeding module 15 can comprise a power splitter, the microwave energy signal of the high-frequency current form generated by microwave signal generation module 14 by this only power splitter exports to corresponding load regulation and control module 16 after dividing equally, can realize the microwave energy signal being obtained high-frequency current form by same power feeding module from same microwave signal generation module equally.
Load regulation and control module 16, for adjusting the directional diagram of corresponding antenna element based on each self-corresponding control signal, such as based on the load variations of each self-corresponding control signal control load regulation and control module 16, change with load variations with the signal parameter making load regulate and control the microwave energy signal of the high-frequency current form that module 16 exports.That is when the load of the control signal control self that load regulation and control module 16 generates based on control module changes, the signal parameter that load regulation and control module 16 exports to the microwave energy signal of the high-frequency current form of antenna element changes with load variations, and the directional diagram of antenna element can be embodied by the signal parameter of the microwave energy signal of high-frequency current form, like this after the signal parameter of the microwave energy signal of high-frequency current form changes, the directional diagram of antenna element also changes thereupon.Again because load regulation and control module 16 based on control signal be obtain according to channel condition information and beamforming algorithm, the directional diagram of the antenna element therefore obtained is corresponding with channel condition information, the signal that each antenna element is launched can be corresponding with channel condition information, to meet the requirement of user to antenna pattern.
Wherein, the structure of load regulation and control module 16 as shown in Figure 4, can comprise: circulator and circuit for regulating and controlling.Circuit for regulating and controlling, under the effect of control signal, the impedance of variable-impedance device in adjustment circuit for regulating and controlling.Described control signal is that control module 13 is amplified output and load can be driven to regulate and control a voltage signal of module 16, as the variable voltage signal in Fig. 4.And circulator, then for receiving the microwave energy signal of the high-frequency current form that microwave signal generation module generates, and by the microwave energy Signal transmissions of generated high-frequency current form to circuit for regulating and controlling, the impedance of signal parameter with variable-impedance device in circuit for regulating and controlling of the microwave energy signal of generated high-frequency current form is changed, and the microwave energy signal of the high-frequency current form after being changed by signal parameter exports to corresponding antenna element.
Concrete, voltage signal as control signal is loaded on the varicap of circuit for regulating and controlling, the capacitive reactance of varicap can be changed along with the change of the magnitude of voltage that it loads, finally cause the impedance of circuit for regulating and controlling to change, the signal parameter of the microwave energy signal of the high-frequency current form that such circuit for regulating and controlling exports also can change along with the change of circuit for regulating and controlling middle impedance.In embodiments of the present invention, the pilot signal of the high-frequency current form that each antenna element is converted to, corresponding load regulation and control module 16 is sent to after channel estimation module 12 and control module 13, make load regulation and control module 16 can change the directional diagram of respective antenna unit according to the channel condition information obtained from the pilot signal after conversion, the signal that antenna element is launched can meet the demand of user to antenna pattern.And when changing the directional diagram of antenna element, the amplitude of microwave energy signal or the mode of phase place of change high-frequency current form can be adopted, the amplitude of microwave energy signal and the mode of phase place of changing high-frequency current form can certainly be adopted simultaneously, its concrete changing mode is not limited to this embodiment of the present invention.
Certainly, circulator in above-mentioned load regulation and control module 16 can also adopt coupler to replace, namely have and export signal to circuit for regulating and controlling from a port, and the signal exported by circuit for regulating and controlling can be used for replacing the circulator load regulation and control module 16 from the device that another port exports.
From technique scheme, the microwave energy signal of high-frequency current form that in wireless charging emitter provided by the invention, microwave signal generation module 14 generates can be transferred to the load corresponding with each antenna element by same power feeding module 15 and regulate and control module 16, make different antennae unit can obtain microwave energy signal from same microwave signal generation module 14, relative in prior art, independently microwave signal generation module is set respectively for different antennae unit, save microwave signal generation module quantity, thus simplification circuit, reduce system cost.
And when the load of the control signal control self that load regulation and control module 16 generates based on control module changes, the signal parameter that load regulation and control module 16 exports to the microwave energy signal of the high-frequency current form of antenna element changes with load variations, and the directional diagram of antenna element can be embodied by the signal parameter of the microwave energy signal of high-frequency current form, like this after the signal parameter of the microwave energy signal of high-frequency current form changes, the directional diagram of antenna element also changes thereupon, again because load regulation and control module based on control signal be obtain according to channel condition information, the directional diagram of the antenna element therefore obtained is corresponding with channel condition information, the signal that each antenna element is launched can be corresponding with channel condition information, to meet the requirement of user to antenna pattern.
Here it should be noted is that: above-mentioned load regulation and control module can with the some antennas unit one_to_one corresponding in array antenna module, regulate and control the mode that directional diagram that module has the antenna element of one-to-one relationship then can adopt the embodiment of the present invention to provide like this to adjust with load, and multiple load regulates and controls module obtains high-frequency current form from same microwave signal generation module microwave energy signal by a power feeding module.Other do not regulate and control antenna element corresponding to module then needs use existing mode adjustment direction figure and adopt existing mode to carry out feed with load, concrete needs in wireless charging emitter for other antenna elements distribute independently microwave signal generation module, control module generates control signal based on channel condition information and directly controls corresponding microwave signal generation module, the microwave energy signal of the high-frequency current form that it is exported changes with the change of control signal, to meet the requirement of channel condition information.And in embodiments of the present invention, the pilot signal of the high-frequency current form relevant to any one antenna element and control signal can send to corresponding channel estimation module 12 and load to regulate and control module 16, as array antenna module 11 at least comprises antenna element 1 and antenna element 2, comprise multiple channel estimation module 12 and multiple load regulation and control module 16 accordingly, be designated as channel estimation module 12-1 respectively, channel estimation module 12-2, load regulation and control module 16-1 and load regulation and control module 16-2, wherein antenna element 1 is corresponding with channel estimation module 12-1, and antenna element 1 and load to regulate and control module 16-1 corresponding, so the pilot signal of the high-frequency current form of antenna element 1 can through channel estimation module 12-1 process, obtain the control signal corresponding with antenna element 1 by control module to be sent to load and to regulate and control module 16-1, the directional diagram of module 16-1 based on control signal adjustment antenna element 1 is regulated and controled to make load.
In the wireless charging emitter that above-described embodiment provides, microwave signal generation module 14 can adopt existing microwave energy signal generating circuit, and structure shown in preferred Fig. 5, can comprise: oscillator, power amplifier and circulator in embodiments of the present invention; Oscillator, for generating the microwave energy signal of high-frequency current form, and exports circulator to after amplifying via power amplifier.Circulator, for exporting the microwave energy signal of described high-frequency current form, and feeds back in power amplifier with the reflected signal of power feeding module joint for forbidding.
Corresponding with said apparatus embodiment, the embodiment of the present invention also provides a kind of wireless charging launching technique, as shown in Figure 6, can comprise the following steps:
101: the pilot signal being received spacing wireless signal form by each antenna element in aerial array, and the pilot signal of spacing wireless signal form is converted to the pilot signal of high-frequency current form.
102: based on the pilot signal of high-frequency current form, obtain channel condition information.Existing channel algorithm for estimating can being adopted in embodiments of the present invention to obtain channel condition information, as adopted LS algorithm, being namely used at present calculating the phase place of channel status or the channel estimation method of amplitude all can be applied to the embodiment of the present invention.
103: based on channel condition information and beamforming algorithm, generate control signal.Concrete can pass through existing channel estimation method, as LS algorithm calculates channel condition information, and in conjunction with beamforming algorithm, obtain initial voltage signal, then initial voltage signal is imported in programmable power supply chip or voltage conversion circuit, the voltage signal that programmable power supply chip or voltage conversion circuit are exported can change with the change of initial voltage signal, and make export voltage signal be converted into the stronger voltage signal of driving force, with make export voltage signal can control load regulation and control module in load.Wherein programmable power supply chip or voltage conversion circuit can adopt for the chip of output voltage signal or circuit in prior art, this embodiment of the present invention are no longer introduced to the concrete form of programmable power supply chip or voltage conversion circuit.
104: based on the directional diagram of control signal adjustment antenna element, concrete can based on the load variations of control signal control load regulation and control module, change with load variations with the signal parameter making load regulate and control the microwave energy signal of the high-frequency current form that module exports, wherein microwave energy signal is generated by microwave signal generation module, and is transferred to corresponding load regulation and control module by power feeding module.
Wherein the directional diagram of antenna element can be embodied by the signal parameter of the microwave energy signal of high-frequency current form, and after the signal parameter of the microwave energy signal of high-frequency current form changes, the directional diagram of antenna element also changes thereupon.Therefore when needing the directional diagram changing antenna element, the amplitude of microwave energy signal or the mode of phase place of change high-frequency current form can be adopted, the amplitude of microwave energy signal and the mode of phase place of changing high-frequency current form can certainly be adopted simultaneously.
Such as under the effect of control signal, the impedance of variable-impedance device in the circuit for regulating and controlling of adjustment load regulation and control module.The microwave energy Signal transmissions that circulator load being regulated and controled module receives, to circuit for regulating and controlling, makes the impedance of signal parameter with variable-impedance device in circuit for regulating and controlling of the microwave energy signal of generated high-frequency current form change.
105: the microwave energy signal transmission by each antenna element, the microwave energy signal of high-frequency current form being converted to spacing wireless signal form.In the circuit for regulating and controlling by control signal adjustment load regulation and control module, the impedance of variable-impedance device adjusts the directional diagram of antenna element, the impedance of signal parameter with variable-impedance device in circuit for regulating and controlling of the microwave energy signal of high-frequency current form changes, therefore antenna element is when changing the microwave energy signal of high-frequency current form, is the microwave energy signal that the microwave energy signal of the high-frequency current form changed by signal parameter is converted to spacing wireless signal form.
It should be noted that, each embodiment in this specification all adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiments, between each embodiment identical similar part mutually see.For device class embodiment, due to itself and embodiment of the method basic simlarity, so description is fairly simple, relevant part illustrates see the part of embodiment of the method.
Finally, also it should be noted that, in this article, the such as relational terms of first and second grades and so on is only used for an entity or operation to separate with another entity or operating space, and not necessarily requires or imply the relation that there is any this reality between these entities or operation or sequentially.And, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thus make to comprise the process of a series of key element, method, article or equipment and not only comprise those key elements, but also comprise other key elements clearly do not listed, or also comprise by the intrinsic key element of this process, method, article or equipment.When not more restrictions, the key element limited by statement " comprising ... ", and be not precluded within process, method, article or the equipment comprising described key element and also there is other identical element.
To the above-mentioned explanation of the disclosed embodiments, those skilled in the art are realized or uses the present invention.To be apparent for a person skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein can without departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (10)
1. a wireless charging emitter, it is characterized in that, described device comprises: comprise the array antenna module of multiple antenna element, with antenna element channel estimation module, control module, microwave signal generation module, power feeding module and at least regulate and control module with an antenna element load one to one one to one;
Described array antenna module, for being received the pilot signal of spacing wireless signal form by each antenna element, and the pilot signal of described spacing wireless signal form to be converted to the pilot signal of high-frequency current form, and for the microwave energy signal of high-frequency current form being converted to by each antenna element the microwave energy signal transmission of spacing wireless signal form;
Each described channel estimation module, for the pilot signal based on the described high-frequency current form after corresponding antenna element conversion, obtains channel condition information;
Described control module, for based on described channel condition information and beamforming algorithm, generates the control signal controlling each load regulation and control module;
Described microwave signal generation module, for generating the microwave energy signal of high-frequency current form, and is transferred to each described load regulation and control module by described power feeding module;
Each described load regulation and control module, for based on each self-corresponding described control signal, adjusts the directional diagram of corresponding antenna element.
2. device according to claim 1, it is characterized in that, described load regulation and control module, for controlling the load variations of described load regulation and control module based on the control signal of self correspondence, change with load variations with the signal parameter making described load regulate and control the microwave energy signal of the high-frequency current form that module exports.
3. device according to claim 2, is characterized in that, described load regulation and control module comprises: circuit for regulating and controlling, circulator or coupler;
Described circuit for regulating and controlling, under the effect of described control signal, adjusts the impedance of variable-impedance device in described circuit for regulating and controlling;
Described circulator or described coupler, for receiving the microwave energy signal of the high-frequency current form that described microwave signal generation module generates, and by the microwave energy Signal transmissions of generated high-frequency current form to circuit for regulating and controlling, the impedance of signal parameter with variable-impedance device in described circuit for regulating and controlling of the microwave energy signal of generated high-frequency current form is changed, and the microwave energy signal of the high-frequency current form after being changed by signal parameter exports to corresponding antenna element.
4. device according to claim 1, is characterized in that, described channel estimation module comprises: Signal Pretreatment device, zero intermediate frequency chip, low precision analog to digital converter and baseband chip;
Described Signal Pretreatment device, for carrying out preliminary treatment to the pilot signal of described high-frequency current form;
Described zero intermediate frequency chip, for being converted to base-band analog signal by pretreated pilot signal;
Described analog to digital converter, for being converted to baseband digital signal by described base-band analog signal;
Described baseband chip, for carrying out channel estimating to described baseband digital signal, will obtain described channel condition information.
5. device according to claim 1, is characterized in that, described microwave signal generation module comprises oscillator, power amplifier and circulator;
Described oscillator, for generating the microwave energy signal of high-frequency current form, and exports described circulator to after amplifying via described power amplifier;
Described circulator, for exporting the microwave energy signal of described high-frequency current form, and feeds back in described power amplifier with the reflected signal of described power feeding module joint for forbidding.
6. device according to claim 1, is characterized in that, described power feeding module comprises: the first power splitter and multiple second power splitter, and the quantity of the output signal of multiple second power splitter is identical with the quantity of described antenna element;
The microwave energy signal that described first power splitter is used for the high-frequency current form generated by described microwave signal generation module all gives described second power splitter;
The output of each second power splitter connects a load regulation and control module, after again being divided equally by the microwave energy signal of the high-frequency current form after dividing equally, export to described load regulation and control module.
7. device according to claim 1, is characterized in that, described power feeding module comprises power splitter, exports to corresponding load regulation and control module after dividing equally for the microwave energy signal of the high-frequency current form described microwave signal generation module generated.
8. a wireless charging launching technique, is characterized in that, described method comprises:
Received the pilot signal of spacing wireless signal form by each antenna element in aerial array, and the pilot signal of described spacing wireless signal form is converted to the pilot signal of high-frequency current form;
Based on the pilot signal of described high-frequency current form, obtain channel condition information;
Based on described channel condition information and beamforming algorithm, generate control signal;
Based on the directional diagram of described control signal adjustment antenna element;
By each antenna element, the microwave energy signal of high-frequency current form is converted to the microwave energy signal transmission of spacing wireless signal form.
9. method according to claim 8, is characterized in that, the described directional diagram based on described control signal adjustment antenna element, comprising:
Based on the load variations of described control signal control load regulation and control module, change with load variations with the signal parameter making described load regulate and control the microwave energy signal of the high-frequency current form that module exports, wherein said microwave energy signal is generated by microwave signal generation module, and is transferred to corresponding load regulation and control module by power feeding module.
10. method according to claim 9, it is characterized in that, the described load variations based on described control signal control load regulation and control module, changes with load variations with the signal parameter making described load regulate and control the microwave energy signal of the high-frequency current form that module exports, comprising:
Under the effect of described control signal, adjust the impedance of variable-impedance device in the circuit for regulating and controlling of described load regulation and control module;
The microwave energy Signal transmissions received by the circulator of described load regulation and control module, to circuit for regulating and controlling, makes the impedance of signal parameter with variable-impedance device in described circuit for regulating and controlling of the microwave energy signal of generated high-frequency current form change.
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| CN201510989493.0A CN105375653B (en) | 2015-12-25 | 2015-12-25 | A kind of wireless charging emitter and method |
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| CN110192325A (en) * | 2016-11-01 | 2019-08-30 | 帝国大学创新有限公司 | A method of for modelled signal waveform |
| CN110429723A (en) * | 2019-07-27 | 2019-11-08 | 西南电子技术研究所（中国电子科技集团公司第十研究所） | Wireless charging microwave power Transmission system |
| CN113124649A (en) * | 2021-03-31 | 2021-07-16 | 北京印刷学院 | Control method and device for microwave transmitting array in microwave drying system |
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| CN110429723B (en) * | 2019-07-27 | 2023-07-25 | 西南电子技术研究所（中国电子科技集团公司第十研究所） | Wireless charging microwave power transmission system |
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| CN113124649B (en) * | 2021-03-31 | 2022-09-23 | 北京印刷学院 | Control method and device for microwave transmitting array in microwave drying system |
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| CN105375653B (en) | 2018-05-01 |
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