CN109167168A - Mimo antenna array, MIMO array antenna and safe examination system - Google Patents
Mimo antenna array, MIMO array antenna and safe examination system Download PDFInfo
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- CN109167168A CN109167168A CN201811004650.8A CN201811004650A CN109167168A CN 109167168 A CN109167168 A CN 109167168A CN 201811004650 A CN201811004650 A CN 201811004650A CN 109167168 A CN109167168 A CN 109167168A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/88—Radar or analogous systems specially adapted for specific applications
- G01S13/89—Radar or analogous systems specially adapted for specific applications for mapping or imaging
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
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- Engineering & Computer Science (AREA)
- Remote Sensing (AREA)
- Radar, Positioning & Navigation (AREA)
- Physics & Mathematics (AREA)
- Computer Networks & Wireless Communication (AREA)
- General Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
- Radar Systems Or Details Thereof (AREA)
Abstract
本申请提供一种面向太赫兹近场成像的MIMO天线阵列、MIMO阵列天线及安检系统。接收天线与多个发射天线设置于同一条圆弧上，且各自均匀分布。接收天线与多个发射天线设置于同一条圆弧上，可以使得所述接收天线与多个所述发射天线到圆心的距离相等。利用等效相位中心原理，任意一对发射天线与接收天线的组合都可以用一个位于两者中心的收发同置的天线来代替。只有在远场条件下，等效相位中心原理才能成立，近场条件下近似误差将不能忽略。MIMO天线阵列利用圆上任意一点到圆心的距离相等的特性，对基于等效相位中心原理设计直线形MIMO天线阵列的方法进行了修正，解决了现有基于等效相位中心原理设计的直线形MIMO阵列在近场成像中存在严重旁栅伪影的问题，提高了成像质量。
The present application provides a MIMO antenna array, a MIMO array antenna and a security inspection system for terahertz near-field imaging. The receiving antenna and the plurality of transmitting antennas are arranged on the same circular arc, and are evenly distributed. The receiving antenna and the multiple transmitting antennas are arranged on the same arc, so that the distances from the receiving antenna and the multiple transmitting antennas to the center of the circle are equal. Using the principle of equivalent phase center, any combination of transmitting antenna and receiving antenna can be replaced by a co-located transmitting and receiving antenna located at the center of the two. Only in the far-field condition, the equivalent phase center principle can be established, and the approximation error cannot be ignored in the near-field condition. The MIMO antenna array uses the characteristic that the distance from any point on the circle to the center of the circle is equal, and the method of designing a linear MIMO antenna array based on the principle of equivalent phase center is modified, and the existing linear MIMO designed based on the principle of equivalent phase center is solved. The array has serious side gate artifacts in near-field imaging, which improves the imaging quality.
Description
Technical field
This application involves field of safety check, more particularly to a kind of mimo antenna array towards Terahertz Near-Field Radar Imaging,
MIMO array antenna and safe examination system.
Background technique
THz imaging technology is the technology being imaged using the frequency electromagnetic waves that frequency band is 0.1THz-10THz, phase
Than for traditional X-ray imaging technique, infrared imagery technique, microwave Imaging Technique, terahertz imaging is with safety is good, wears
Permeability is strong, picture quality is high and the advantages such as certain material recognition capability, therefore receive more and more attention.Multi input is more
Output (Multiple-Input Multiple-Output, MIMO) imaging radar is a kind of to utilize the multiple of dual-mode antenna unit
It combines to realize the radar for generating image with less number of antennas, has cost and complexity is low, rate of data acquisition is fast
The features such as.And it merges terahertz imaging based on multiple THz imaging technology is received more and receives the excellent of multiple imaging radar more
Point has important application value in fields such as human body safety check, medical diagnosis, military surveillances, is especially being directed to prohibited items
There is natural advantage in the human body safety check field of inspection.
Wherein, Array Design is a very crucial problem in imaging system, it is to image quality, parameter Estimation, mesh
Mark detection etc. has direct or indirect influence.Reasonable array arrangement can not only obtain good image quality, Er Qieke
With the complexity for reducing array element number, simplifying system.Displaced phase center principle cannot ignore approximate miss under Near Field
Difference, and with the raising of signal frequency, Terahertz frequency range is arrived, the phase error as caused by time delay error will be increased further.
Therefore, currently based on the linear mimo antenna array of displaced phase center principle design, there is serious sides in Near-Field Radar Imaging
The problem of grid artifact, affect image quality.
Summary of the invention
Based on this, it is necessary to which for current linear mimo antenna array, there is serious pass-gate puppets in Near-Field Radar Imaging
The problem of shadow, provides a kind of mimo antenna array, MIMO array day towards Terahertz Near-Field Radar Imaging with smaller pass-gate artifact
Line and safe examination system.
It includes receiving antenna submatrix and multiple transmitting antenna submatrixs that the application, which provides a kind of mimo antenna array,.It is described more
A transmitting antenna submatrix is set to the both ends of the receiving antenna submatrix, and the receiving antenna submatrix and the multiple transmitting day
Line submatrix is set on same circular arc.
The receiving antenna submatrix includes multiple receiving antennas in one of the embodiments,.The multiple receiving antenna
It is set on same circular arc, and the spacing between the adjacent receiving antenna is equal.
Each transmitting antenna submatrix includes multiple transmitting antennas in one of the embodiments,.The multiple transmitting
Antenna is set to the both ends of the multiple receiving antenna, and the spacing between the adjacent transmitting antenna is equal, and the multiple hair
It penetrates antenna and the multiple receiving antenna is set on same circular arc.
The mimo antenna array includes 2 transmitting antenna submatrixs, 2 hairs in one of the embodiments,
Penetrate the both ends that antenna submatrix is set to the receiving antenna submatrix.
Each transmitting antenna submatrix includes 5 transmitting antennas in one of the embodiments, receiving antenna
Battle array includes a receiving antenna.
The working frequency range of the receiving antenna submatrix and the multiple transmitting antenna submatrix in one of the embodiments,
Working frequency range is at least partly identical.
A kind of MIMO array antenna includes transceiver, electronic switch and any of the above-described implementation in one of the embodiments,
Mimo antenna array described in example, the transceiver are electrically connected with the mimo antenna array, and the transceiver is to generate hair
Penetrate signal, switch of the electronic switch to switch the multiple transmitting antenna and the multiple receiving antenna.
A kind of safe examination system includes multiple safety check modules and processing module in one of the embodiments,.It is each described
Safety check module includes at least one MIMO array antenna as described in above-described embodiment.The processing module and the multiple safety check
The output end of module is electrically connected, and detects data to handle the multiple safety check module.
Each safety check module further includes arc structure in one of the embodiments,.At least one is MIMO gusts described
Array antenna is nested in the arc structure.
The MIMO array antenna is slidably connected with the arc structure in one of the embodiments, to realize pair
The scanning up and down of detection object.
The application provides a kind of mimo antenna array towards Terahertz Near-Field Radar Imaging, MIMO array antenna and safety check system
System, the multiple transmitting antenna are based on transmitting signal transmitting detection signal, and the receiving antenna receives reflection signal, and will reflection
Signal feeds back to transceiver.The receiving antenna and the multiple transmitting antenna are set on same circular arc, and are uniformly divided
Cloth.The receiving antenna and the multiple transmitting antenna are set on same circular arc, can make the receiving antenna and institute
State multiple transmitting antennas being equidistant to the center of circle.
According to displaced phase center principle, the combination of any pair of transmitting antenna and receiving antenna can be with positioned at the two
One transmitting-receiving at center is replaced with the antenna set.Only under far field condition, displaced phase center principle could be set up, near field
Under the conditions of approximate error cannot ignore.And with the raising of signal frequency, Terahertz frequency range is arrived, as caused by time delay error
Phase error will be increased further.The equidistant characteristic for going up any point to the center of circle is justified in the mimo antenna array utilization,
To based on displaced phase center principle design linear mimo antenna array method be corrected, solve it is existing based on etc.
There is serious pass-gate artifact in the linear MIMO array of effect phase center principle, improve into image quality in Near-Field Radar Imaging
Amount.
Detailed description of the invention
Fig. 1 is mimo antenna array structure schematic diagram provided by the present application；
Fig. 2 is that transmitting antenna provided by the present application and receiving antenna form equivalent Single-Input Single-Output antenna schematic diagram；
Fig. 3 is linear mimo antenna array and its equivalent Single-Input Single-Output array structure schematic diagram；
Fig. 4 is mimo antenna array structure schematic diagram in one embodiment provided by the present application；
Fig. 5 is the equivalent array structural schematic diagram of mimo antenna array in one embodiment provided by the present application；
Fig. 6 is mimo antenna array and its equivalent array structural parameters in one embodiment provided by the present application；
Fig. 7 is mimo antenna array in one embodiment provided by the present application and its equivalent array structure in THz wave
Simulation parameter in section；
Fig. 8 be in one embodiment provided by the present application mimo antenna array and its equivalent array structure 330GHz~
Mimo antenna array and its point spread function of equivalent array in 350GHz；
Fig. 9 be in one embodiment provided by the present application mimo antenna array and linear MIMO array 330GHz~
Point spread function in 350GHz；
Figure 10 is mimo antenna array in one embodiment provided by the present application and linear MIMO array in millimeter wave wave
Section simulation parameter；
Figure 11 be in one embodiment provided by the present application mimo antenna array and linear MIMO array 25GHz~
Point spread function in 35GHz；
Figure 12 be in one embodiment provided by the present application mimo antenna array and linear MIMO array 120GHz~
Point spread function in 150GHz；
Figure 13 is the structural schematic diagram of safe examination system provided by the present application.
Description of symbols
Mimo antenna array 10, receiving antenna submatrix 110, transmitting antenna submatrix 120, receiving antenna 111, transmitting antenna
121, MIMO array antenna 20, safe examination system 30, safety check module 310, processing module 320, arc structure 311, detection object 40,
The center of circle 130, equivalent aerial 50, equivalent aerial array 60.
Specific embodiment
In order to which the objects, technical solutions and advantages of the application are more clearly understood, by the following examples, and combine attached
Figure, is further elaborated the application.It should be appreciated that specific embodiment described herein is only to explain this Shen
Please, it is not used to limit the application.
It is herein component institute serialization number itself, such as " first ", " second " etc., is only used for distinguishing described object,
Without any sequence or art-recognized meanings.And " connection ", " connection " described in the application, unless otherwise instructed, include directly and
It is indirectly connected with (connection).In the description of the present application, it is to be understood that term " on ", "lower", "front", "rear", " left side ",
The orientation of the instructions such as " right side ", "vertical", "horizontal", "top", "bottom", "inner", "outside", " clockwise ", " counterclockwise " or position are closed
System indicates to be based on the orientation or positional relationship shown in the drawings, being merely for convenience of description the application and simplifying description
Or imply that signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore cannot understand
For the limitation to the application.
In this application unless specifically defined or limited otherwise, fisrt feature in the second feature " on " or " down " can be with
It is that the first and second features directly contact or the first and second features pass through intermediary mediate contact.Moreover, fisrt feature exists
Second feature " on ", " top " and " above " but fisrt feature be directly above or diagonally above the second feature, or be merely representative of
First feature horizontal height is higher than second feature.Fisrt feature can be under the second feature " below ", " below " and " below "
One feature is directly under or diagonally below the second feature, or is merely representative of first feature horizontal height less than second feature.
Referring to Figure 1, it includes receiving antenna submatrix 110 and multiple transmittings that the application, which provides a kind of mimo antenna array 10,
Antenna submatrix 120.The multiple transmitting antenna submatrix 120 is set to the both ends of the receiving antenna submatrix 110, and the reception
Antenna submatrix 110 and the multiple transmitting antenna submatrix 120 are set on same circular arc.
The multiple transmitting antenna submatrix 120 is based on transmitting signal transmitting detection signal, and the receiving antenna submatrix 110 connects
Reflection signal is received, and reflection signal is fed back into transceiver.The receiving antenna submatrix 110 and the multiple transmitting antenna submatrix
120 are set on same circular arc, and are uniformly distributed.The receiving antenna submatrix 110 and the multiple transmitting antenna submatrix
120 are set on same circular arc, and the receiving antenna submatrix 110 can be made to arrive with the multiple transmitting antenna submatrix 120
The center of circle 130 is equidistant.
According to displaced phase center principle, the combination of any pair of transmitting antenna and receiving antenna can be located at one
The transmitting-receiving at the two center is replaced with the antenna set.Only under far field condition, displaced phase center principle could be set up, near field
Under the conditions of approximate error cannot ignore.And with the raising of signal frequency, Terahertz frequency range is arrived, as caused by time delay error
Phase error will be increased further.The mimo antenna array 10 utilizes upper any point of circle to the equidistant of the center of circle 130
Characteristic is corrected the method based on displaced phase center principle design linear mimo antenna array, solves existing
There is serious pass-gate artifact in the linear MIMO array based on displaced phase center principle, improve in Near-Field Radar Imaging
Image quality.
In one embodiment, the receiving antenna submatrix 110 includes multiple receiving antennas 111, the multiple reception day
Line 111 is set on same circular arc, and the spacing between the adjacent receiving antenna 111 is equal.
In one embodiment, each transmitting antenna submatrix 120 includes multiple transmitting antennas 121.The multiple hair
The both ends that antenna 121 is set to the multiple receiving antenna 111 are penetrated, the spacing between the adjacent transmitting antenna 121 is equal, and
The multiple transmitting antenna 121 is set on same circular arc with the multiple receiving antenna 111.
The adjacent receiving antenna 111, the adjacent transmitting antenna 121 and the adjacent receiving antenna 111 and institute
The circular arc spacing between transmitting antenna 121 is stated, needs to meet by the multiple receiving antenna 111 and the multiple transmitting antenna
Arc length between the 121 equivalent array antennas formed is less than or equal to half central wavelength lambdac.Wherein, central wavelength lambdac
For the corresponding wavelength of wideband electromagnetic wave centre frequency of transmitting.
Fig. 2 is referred to, according to displaced phase center principle, the combination of any pair of transmitting antenna and receiving antenna is ok
It is replaced with the same antenna set of a transmitting-receiving for being located at the two center.Utilize upper any point being equidistant to the center of circle 130 of circle
Characteristic, to based on displaced phase center principle design linear mimo antenna array method be corrected.In polar coordinates
(r, θ in systemT) at the transmitting antenna 121 and (r, θR) at the receiving antenna 111 combination can be located at (r, (θT
+θR)/2) at transmitting-receiving substituted with the equivalent aerial 50 set, and due to upper any point being equidistant to the center of circle 130 of circle,
Delay, τTR=(rT+rR)/c=2rv/c sets up perseverance.The arc-shaped equivalent Single-Input Single-Output day of imaging requirements can be met by designing
Linear array then decomposes and obtains corresponding MIMO array.
Therefore, approximate error is not present in the mimo antenna array 10, near field and equivalent Single-Input Single-Output antenna array
Column have similar pass-gate horizontal, carry out to the method for designing linear mimo antenna array based on displaced phase center principle
Amendment, solves that existing that there are serious pass-gates in Near-Field Radar Imaging is pseudo- based on the linear MIMO array of displaced phase center principle
The problem of shadow, improves image quality.
In one embodiment, the mimo antenna array 10 includes 2 transmitting antenna submatrixs 120.2 hairs
Penetrate the both ends that antenna submatrix 120 is set to the receiving antenna submatrix 110.
In one embodiment, each transmitting antenna submatrix 120 includes 5 transmitting antennas 121, the receiving antenna
Submatrix 110 includes 20 receiving antennas 111.
2 transmitting antenna submatrixs 120 are respectively arranged at the both ends of the receiving antenna submatrix 110, and each described
Transmitting antenna submatrix 120 includes 5 transmitting antennas 121, and the receiving antenna submatrix 110 includes 20 receiving antennas
111.That is 5 transmitting antennas 121 are set to one end of 20 receiving antennas 111,5 transmitting antennas
121 are set to the other end of 20 receiving antennas 111.
Fig. 3-5 is referred to, in one embodiment, radiation source is selected in terahertz wave band.First to based on equivalent phase
The linear MIMO array and the mimo antenna array 10 of principle design have carried out emulation testing, while using two kind ten
Send out 20 receipts MIMO arrays.Ten hairs, 20 receipts MIMO array refers to 10 transmitting antenna 121 and 20 receiving antennas
111, and every 5 transmitting antennas 121 are respectively arranged at the both ends of 20 receiving antennas 111.
Referring to Fig. 6 is that ten hairs 20 receive mimo antenna array and its equivalent array structural parameters, and Fig. 7 is ten hairs 20
Receive mimo antenna array and its simulation parameter of equivalent array structure in terahertz wave band.
Fig. 8 is referred to, receives mimo antenna array and its equivalent array structure in 330GHz~350GHz for ten hairs 20
The point spread function of middle mimo antenna array and its equivalent array.Wherein orientation sample range d is (- 8 λc,8λc), λcFor in
Cardiac wave is long.It is shown from simulation result shown in Fig. 8, in the Near-Field Radar Imaging that image-forming range is 0.1m, herein described MIMO days
The point spread function (point spread function, PSF) of linear array 10 and its equivalent array is almost overlapped, and is demonstrated
The consistency of herein described mimo antenna array 10 and its equivalent array imaging performance under Near Field.
Fig. 9 is referred to, receives mimo antenna array and linear MIMO array in 330GHz~350GHz for ten hairs 20
Point spread function.As can be seen from Figure 9 under Near Field, the pass-gate level of the mimo antenna array 10 provided by the present application is bright
Aobvious to be lower than the linear MIMO array designed based on equivalent phase principle, emulation experiment demonstrates the validity of the application.
0-12 referring to Figure 1, in one embodiment, parameter setting are as shown in Figure 10, in 25-35GHz and 120-
The millimeter wave band of 150GHz has carried out emulation with linear mimo antenna array to herein described mimo antenna array 10 and has surveyed
Examination.It can be seen that from Figure 11 and Figure 12 in millimeter wave band, the pass-gate of herein described mimo antenna array 10 is horizontal same bright
It is aobvious to be lower than the linear MIMO array designed based on equivalent phase principle.Therefore, herein described mimo antenna array 10 is in milli
Meter wave band has validity, may be equally applicable for other electromagnetic wave bands.
In one embodiment, the working frequency range of the receiving antenna submatrix 110 and the multiple transmitting antenna submatrix 120
Working frequency range it is at least partly identical.
In one embodiment, a kind of MIMO array antenna 20 includes transceiver, electronic switch and any of the above-described embodiment
The mimo antenna array 10, the transceiver are electrically connected with the mimo antenna array 10, and the transceiver is to generate
Emit signal, switch of the electronic switch to switch the multiple transmitting antenna and the multiple receiving antenna.
The transceiver is for realizing the mutual conversion of electromagnetic wave signal and electric signal, and the transceiver is according to transmitting signal
Frequency for example can be millimeter-wave transceiver or Terahertz transceiver etc..Transmitting antenna is based in the mimo antenna array 10
Emit signal transmitting detection signal, receiving antenna feeds back to the transceiver to receive reflection signal, and by reflection signal.
In one embodiment, a kind of safe examination system 30 includes multiple safety check modules 310 and processing module 320.Each
The safety check module 310 includes at least one MIMO array antenna 20 as described in above-described embodiment.The processing module 320 with
The output end of the multiple safety check module 310 is electrically connected, and detects data to handle the multiple safety check module 310.
Each safety check module 310 includes at least one MIMO array antenna 20 as described in above-described embodiment, is used for
The electromagnetic wave signal of the Transceiver Transmit is propagated, to propagate to the detection object 40, is realized to the detectable substance
The detection of body 40 scans.Wherein, the MIMO array antenna 20 can use a burst of column of linear array array or face.
The processing module 320 can be the various terminal devices with processing computing function, such as server, plate
People's computer, desktop computer, PC on knee, netbook computer or smart phone etc..In the MIMO array antenna 20
The transmitting antenna 121 emit electromagnetic wave via the detection object 40 reflection obtain reflection signal, reflect signal by institute
It states after receiving antenna 111 receives and is converted to electric signal, receiving and transmitting signal is transmitted to the processing module 320 after mixing and demodulation.Institute
Stating processing module 320 can handle to obtain the section scanning figure of the detection object 40 based on the data after demodulation, to realize
Detection to the detection object 40.
It can be used for carrying out safety check to detection object 40 by the safe examination system 30.The number of the safety check module 310
It can be one or more.Multiple safety check modules 310 are arranged around the detection object 40, to from different directions to institute
Detection object 40 is stated to be detected.THz wave has unique dactylogram, broadband, penetrability, high-resolution and non-hazardous
Property the characteristics of, can carry out non-destructive testing, safety inspection etc., improve the safety of people's trip.
In one embodiment, the MIMO array antenna 20 can be the array antenna of cylindrical shape, comprehensive realization
The detection object 40 is scanned, the larger range of information for obtaining the detection object 40.
In one embodiment, the safe examination system 30 includes two safety check modules 310, and two safety check moulds
Block 310 is oppositely arranged, and the detection object 40 is set between described two safety check modules 310, can be used to detect.
In one embodiment, each safety check module 310 further includes arc structure 311, at least one described MIMO
Array antenna 20 is nested in the arc structure 311.
The MIMO array antenna 20 can be arc-shaped array antenna, be installed on the arc structure 311, form one
It is the circular arc in the center of circle with the detection object 40, so as to realize the scanning to the detection object 40 from all directions, really
The safety of people's trip is protected.
In one embodiment, each safety check module 310 may include multiple MIMO array antennas 20, described
Multiple MIMO array antennas 20, which can be fixed, to be nested in the arc structure 311, and a burst of column of forming face make multiple MIMO
Array antenna 20 can also realize the comprehensive scanning to the detection object 40 without sliding, save the safe examination system 30 and examine
The time of survey improves the efficiency of the safe examination system 30, has been more convenient people's trip.
In one embodiment, the MIMO array antenna 20 is slidably connected with the arc structure 311, to realize pair
The scanning up and down of detection object.
By installing a pulley between the arc structure 311 and the MIMO array antenna 20, and in the circle
One sliding groove is set in arc structure 311, the MIMO array antenna 20 upper downslide in the arc structure 311 may be implemented
It is dynamic, it is scanned along short transverse, so as to be scanned to the detection object 40 is comprehensive, larger range of acquisition
The information of the detection object 40, carries dangerous goods, endangers social safety when people being avoided to go on a journey.
In one embodiment, the safety check module 310 further includes mixing unit and demodulating unit.The mixing unit connects
It is connected to the transceiver, is mixed to obtain reference signal based on transmitting signal and local oscillation signal, and based on reflection signal and local oscillator
Signal is mixed to obtain measuring signal.Wherein, intrinsic signals are generated by the transceiver, and the demodulating unit is believed to demodulation reference
Number with measuring signal obtain detection data.
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, all should be considered as described in this specification.
The several embodiments of the application above described embodiment only expresses, the description thereof is more specific and detailed, but simultaneously
The limitation to the application the scope of the patents therefore cannot be interpreted as.It should be pointed out that for those of ordinary skill in the art
For, without departing from the concept of this application, various modifications and improvements can be made, these belong to the guarantor of the application
Protect range.Therefore, the scope of protection shall be subject to the appended claims for the application patent.
Claims (10)
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811004650.8A CN109167168B (en) | 2018-08-30 | 2018-08-30 | MIMO antenna array, MIMO array antenna and security inspection system |
| PCT/CN2018/114520 WO2020042363A1 (en) | 2018-08-30 | 2018-11-08 | Multiple-input and multiple-output antenna array, multiple-input and multiple-output array antenna, and security inspection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811004650.8A CN109167168B (en) | 2018-08-30 | 2018-08-30 | MIMO antenna array, MIMO array antenna and security inspection system |
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| CN109167168A true CN109167168A (en) | 2019-01-08 |
| CN109167168B CN109167168B (en) | 2020-10-16 |
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| CN112180458A (en) * | 2020-09-15 | 2021-01-05 | 北京子兆信息技术有限公司 | MIMO-based imager antenna layout method, array and imaging detection method |
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| CN113871900A (en) * | 2021-09-27 | 2021-12-31 | 中国电子科技集团公司第三十八研究所 | Two-dimensional MIMO array antenna with high angular resolution and array grouping method thereof |
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- 2018-08-30 CN CN201811004650.8A patent/CN109167168B/en active Active
- 2018-11-08 WO PCT/CN2018/114520 patent/WO2020042363A1/en not_active Ceased
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110072184A (en) * | 2019-03-28 | 2019-07-30 | 天津大学 | The solution of the formed error of terminal antenna difference in fingerprint base method indoor positioning |
| CN111812642A (en) * | 2020-05-25 | 2020-10-23 | 北京理工大学 | A cylindrical aperture MIMO array antenna, imaging method and compensation method |
| CN112180458A (en) * | 2020-09-15 | 2021-01-05 | 北京子兆信息技术有限公司 | MIMO-based imager antenna layout method, array and imaging detection method |
| CN112180458B (en) * | 2020-09-15 | 2024-03-15 | 北京子兆信息技术有限公司 | MIMO-based millimeter wave human body security imager antenna layout method |
| CN112415622A (en) * | 2020-10-30 | 2021-02-26 | 李世超 | Millimeter wave imaging system based on arc array |
| CN112415622B (en) * | 2020-10-30 | 2024-06-11 | 李世超 | Millimeter wave imaging system based on arc array |
| CN113871900A (en) * | 2021-09-27 | 2021-12-31 | 中国电子科技集团公司第三十八研究所 | Two-dimensional MIMO array antenna with high angular resolution and array grouping method thereof |
| CN113871900B (en) * | 2021-09-27 | 2024-05-10 | 中国电子科技集团公司第三十八研究所 | A two-dimensional MIMO array antenna with high angular resolution and array formation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2020042363A1 (en) | 2020-03-05 |
| CN109167168B (en) | 2020-10-16 |
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