CN1411299A - Base station receiver and transmitter radio frequency front end - Google Patents
Base station receiver and transmitter radio frequency front end Download PDFInfo
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Abstract
本发明公开了一种基站收发信机射频前端，该前端包括发信单元、主接收单元、分集接收单元、监视单元，该射频前端将发信单元、主接收单元、分集接收单元、监视单元集成于一个模块之中，使基站系统的前端不仅保持原有的发信单元、主接收单元、分集接收单元、监视单元所具有功能外，还使得基站收发信机射频前端结构更为紧凑，使之能集成在基站系统的一个机框中，而发射合路器与发射接收双工器通过一外接同轴电缆相接，可以实现在发射不合路的情况下，发射直接连接到双工器，使单发信机时发射损耗很小。
The invention discloses a radio frequency front end of a base transceiver station, the front end includes a signaling unit, a main receiving unit, a diversity receiving unit, and a monitoring unit, and the radio frequency front end integrates the signaling unit, the main receiving unit, the diversity receiving unit, and the monitoring unit In one module, the front end of the base station system not only maintains the functions of the original sending unit, main receiving unit, diversity receiving unit, and monitoring unit, but also makes the structure of the radio frequency front end of the base transceiver station more compact, making it It can be integrated in a frame of the base station system, and the transmitting combiner and the transmitting and receiving duplexer are connected through an external coaxial cable, so that when the transmitting is not combined, the transmitting is directly connected to the duplexer, so that The transmission loss is very small when a single transmitter is used.
Description
技术领域technical field
本发明涉及移动通讯系统，更具体地指一种基站收发信机射频前端。The invention relates to a mobile communication system, more specifically to a radio frequency front end of a base transceiver station.
背景技术Background technique
在无线通讯系统中，收发信机系统的前端为了提高室外天馈线系统的利用率，对发射信号常采用多路合成一路，即发射合路技术，同时为了对发射通道进行监视而增加监视电路；对于接收信号常需要低噪声放大(LNA)，同时对于放大后的信号采用一路分成多路的技术，即接收分路技术，而且为了对发射通道进行监视而增加监视电路；有时为了解决发射信号与接收信号使用不同的天线的局限性，采用发射信号与接收信号合成技术，即双工技术；而且有一些场合，对于接收系统为了加强接收效果，采用两副无相关性的接收天馈线系统即分集接收技术。In the wireless communication system, in order to improve the utilization rate of the outdoor antenna and feeder system, the front-end of the transceiver system often adopts multi-channel synthesis for the transmission signal, that is, the transmission combination technology, and at the same time, the monitoring circuit is added to monitor the transmission channel; For the received signal, low noise amplification (LNA) is often required, and at the same time, the amplified signal is divided into multiple channels, that is, the receiving branch technology, and the monitoring circuit is added in order to monitor the transmission channel; sometimes in order to solve the transmission signal and The limitations of using different antennas for receiving signals, using the combination technology of transmitting signals and receiving signals, that is, duplex technology; and in some occasions, in order to enhance the receiving effect of the receiving system, two pairs of uncorrelated receiving antenna feeder systems are used, that is, diversity Receive technology.
请结合图1-图4，Please combine Figure 1-Figure 4,
发射合路是将几个发信机的发射射频信号经过合路器合成为一路，再经过发射滤波器后由一副发射天线发射出去。Transmitting combination is to combine the transmitting radio frequency signals of several transmitters into one through a combiner, and then transmit them from a transmitting antenna after passing through a transmitting filter.
接收分路是将一副接收天线接收下来的射频信号经过接收滤波器和低噪声放大器后经分路器分成几路送给收信机。The receiving branch is to divide the radio frequency signal received by a pair of receiving antenna into several paths through the receiving filter and low-noise amplifier and send it to the receiver through the splitter.
双工是通过一个双工器将发信机射频信号送到一副天线，同时利用该天线接收的射频信号由该双工器送给收信机。Duplex is to send the radio frequency signal of the transmitter to an antenna through a duplexer, and at the same time, the radio frequency signal received by the antenna is sent to the receiver by the duplexer.
分集接收是通过两副无相关性的天线(接收天线1和接收天线2)将射频信号接收下来，分别经过滤波器和低噪放后送到独立的主收信机和分集收信机，在由分集接收信号处理模块处理。Diversity reception is to receive the radio frequency signal through two uncorrelated antennas (receiving antenna 1 and receiving antenna 2), and then send it to the independent main receiver and diversity receiver after passing through the filter and low noise amplifier respectively. It is processed by the diversity reception signal processing module.
在基站收发信机系统中，发射合路、接收分路、双工、分集接收均是各自设计为单独的模块用于不同场合和不同系统中，发射和接收通道的监视电路也是分散于相应的单独模块中，一个模块只有一种功能。通常一个基站收发信机系统需要包括多路发射信号合成、接收信号进行放大和分成多路、分集接收功能等，发射信号和接收信号采用同一个天线，同时要对各部分的工作进行监视，如果采用目前的单独模块，基站收发信机系统将存在如下缺点：In the base station transceiver system, the transmission combining, receiving splitting, duplexing, and diversity receiving are all designed as separate modules for different occasions and different systems, and the monitoring circuits of the transmitting and receiving channels are also scattered in the corresponding In a single module, a module has only one function. Usually a base station transceiver system needs to include multi-channel transmission signal synthesis, reception signal amplification and division into multiple channels, diversity reception functions, etc. The same antenna is used for the transmission signal and the reception signal, and the work of each part must be monitored at the same time. With the current separate modules, the base station transceiver system will have the following disadvantages:
1、系统需要很多的模块，分布于机柜的多个槽位上；1. The system requires a lot of modules, which are distributed in multiple slots of the cabinet;
2、各个功能模块的工作状态监视电路分布于各个单独的功能模块中，比较分散、不便于集中监视管理；2. The working status monitoring circuits of each functional module are distributed in each individual functional module, which is relatively scattered and inconvenient for centralized monitoring and management;
3、需要安装各个功能模块的机框很多，使用不便。3. There are many machine frames that need to install various functional modules, which is inconvenient to use.
显然，这与移动通讯系统基站的设计力求安装模块少、功能强和结构紧凑的要求是不相符的。Obviously, this is inconsistent with the design of the base station of the mobile communication system, which requires fewer modules to be installed, strong functions and compact structure.
发明内容Contents of the invention
针对基站收发信机射频前端存在的上述问题，本发明提供一种基站收发信机射频前端。Aiming at the above-mentioned problems existing in the radio frequency front end of the base station transceiver, the present invention provides a radio frequency front end of the base station transceiver.
为了解决上述问题，本发明采用如下技术方案，该基站收发信机射频前端包括发信单元、主接收单元、分集接收单元、监视单元，其特征在于：发信单元、主接收单元、分集接收单元、监视单元集成于一个模块之中，In order to solve the above problems, the present invention adopts the following technical scheme, the radio frequency front end of the base station transceiver includes a signaling unit, a main receiving unit, a diversity receiving unit, and a monitoring unit, and is characterized in that: the signaling unit, the main receiving unit, and the diversity receiving unit , The monitoring unit is integrated in one module,
所述的发信单元含有发射合路器、发射接收双工器，在发信单元中，发射合路器的输入与基站系统的发信机相接，发射合路器的输出接至发射接收双工器，双工器与基站系统的主天线相接；The sending unit includes a transmitting combiner and a transmitting and receiving duplexer. In the sending unit, the input of the transmitting combiner is connected to the transmitter of the base station system, and the output of the transmitting combiner is connected to the transmitting and receiving duplexer. A duplexer, the duplexer is connected to the main antenna of the base station system;
所述的主接收单元含有低噪声放大器和主接收分路器，在主接收单元中，低噪声放大器的输入与发信单元的双工器相接，低噪声放大器的输出与主接收分路器相接，主接收分路器的输出接至基站系统的主收信机；The main receiving unit contains a low-noise amplifier and a main receiving splitter. In the main receiving unit, the input of the low-noise amplifier is connected to the duplexer of the sending unit, and the output of the low-noise amplifier is connected to the main receiving splitter. connected, the output of the main receiving splitter is connected to the main receiver of the base station system;
所述的分集接收单元含有接收滤波器、低噪声放大器、分集接收分路器，在分集接收单元中，接收滤波器与分集天线相接，接收滤波器的输出接低噪声放大器的输入相接，低噪声放大器的输出接分集接收分路器的输入相接，分集接收分路器的输出接至基站系统的分集收信机；The diversity receiving unit includes a receiving filter, a low noise amplifier, and a diversity receiving splitter. In the diversity receiving unit, the receiving filter is connected to the diversity antenna, and the output of the receiving filter is connected to the input of the low noise amplifier. The output of the low noise amplifier is connected to the input of the diversity receiving splitter, and the output of the diversity receiving splitter is connected to the diversity receiver of the base station system;
所述的监视单元分别与发信单元、主接收单元、分集接收单元相接。The monitoring unit is respectively connected with the signaling unit, the main receiving unit and the diversity receiving unit.
所述的监视单元包括一发射通道主接收监视电路和一分集接收通道监视电路，发射通道主接收监视电路与发信单元的双工器以及主接收单元的低噪声放大器相连接，分集接收通道监视电路与分集接收单元的低噪声放大器相连接。The monitoring unit includes a transmitting channel main receiving monitoring circuit and a diversity receiving channel monitoring circuit, the transmitting channel main receiving monitoring circuit is connected with the duplexer of the sending unit and the low noise amplifier of the main receiving unit, and the diversity receiving channel monitoring The circuit is connected with the low noise amplifier of the diversity receiving unit.
所述的发信单元中，发射合路器的输出通过一外接同轴电缆与发射接收双工器的输入相接。In the signaling unit, the output of the transmitting combiner is connected to the input of the transmitting and receiving duplexer through an external coaxial cable.
由于本发明将传统的基站收发信机射频前端中的发信单元、主接收单元、分集接收单元、监视单元集成于一个模块之中，使基站系统的前端不仅保持原有的发信单元、主接收单元、分集接收单元、监视单元所具有功能外，还使得基站收发信机射频前端结构更为紧凑，使之能集成在基站系统的一个机框中，而发射合路器与发射接收双工器通过一外接同轴电缆相接，可以实现在发射不合路的情况下，发射直接连接到双工器，使单发信机时发射损耗很小。Because the present invention integrates the sending unit, the main receiving unit, the diversity receiving unit and the monitoring unit in the radio frequency front end of the traditional base transceiver station into one module, the front end of the base station system not only maintains the original sending unit, main In addition to the functions of the receiving unit, diversity receiving unit, and monitoring unit, it also makes the RF front-end structure of the base transceiver station more compact, so that it can be integrated in a frame of the base station system, and the transmitting combiner and the transmitting and receiving duplex The transmitters are connected through an external coaxial cable, which can realize that the transmission is directly connected to the duplexer when the transmission is not combined, so that the transmission loss is very small when there is a single transmitter.
附图说明Description of drawings
图1-图4分别为现有独立的发射合路、接收分路、双工及分集接收组成的基站收发信机射频前端方框示意图。Figures 1 to 4 are block diagrams of the radio frequency front end of the base station transceiver composed of the existing independent transmission combining, receiving dividing, duplexing and diversity receiving respectively.
图5为采用本发明的射频前端构成的基站收发信机射频前端方框示意图。Fig. 5 is a schematic block diagram of a radio frequency front end of a base transceiver station composed of the radio frequency front end of the present invention.
图6为采用本发明的射频前端构成的基站收发信机射频前端一实施例方框示意图。Fig. 6 is a schematic block diagram of an embodiment of a radio frequency front end of a base station transceiver constituted by the radio frequency front end of the present invention.
具体实施方式Detailed ways
请参阅图5所示，本发明的基站收发信机射频前端10包括发信单元11、主接收单元12、分集接收单元13、监视单元14。发信单元11、主接收单元12、分集接收单元13、监视单元14集成于一个模块之中。Please refer to FIG. 5 , the radio frequency front end 10 of the base transceiver station of the present invention includes a signaling unit 11 , a
所述的发信单元11含有发射合路器、发射接收双工器，在发信单元11中，发射合路器的输入与基站系统的发信机相接，发射合路器的输出接至发射接收双工器，双工器与基站系统的主天线Y1相接。Described signaling unit 11 contains a transmitting combiner and a transmitting and receiving duplexer. In the transmitting unit 11, the input of the transmitting combiner is connected with the transmitter of the base station system, and the output of the transmitting combiner is connected to The transmitting and receiving duplexer is connected to the main antenna Y1 of the base station system.
所述的主接收单元12含有低噪声放大器和主接收分路器，在主接收单元12中，低噪声放大器的输入与发信单元的双工器相接，低噪声放大器的输出与主接收分路器相接，主接收分路器的输出接至基站系统的主收信机。The
所述的分集接收单元13含有接收滤波器、低噪声放大器、分集接收分路器，在分集接收单元13中，接收滤波器与分集天线Y2相接，接收滤波器的输出接低噪声放大器的输入相接，低噪声放大器的输出接分集接收分路器的输入相接，分集接收分路器的输出接至基站系统的分集收信机。Described
所述的监视单元14分别与发信单元11、主接收单元12、分集接收单元13相接。The
监视单元14包括一发射通道主接收监视电路和一分集接收通道监视电路，所述的监视单元包括一发射通道主接收监视电路和一分集接收通道监视电路，发射通道主接收监视电路与发信单元11的双工器以及主接收单元12的低噪声放大器相连接，分集接收通道监视电路与分集接收单元13的低噪声放大器相连接。The
所述的发信单元11中，发射合路器的输出通过一外接同轴电缆15与发射接收双工器的输入相接。In the signaling unit 11, the output of the transmitting combiner is connected to the input of the transmitting and receiving duplexer through an external
请继续参阅图6所示，本发明再以GSM系统的基站射频前端中发射合路为二合一、接收分路为一分二为例进一步说明如下：Please continue to refer to shown in Fig. 6, the present invention further explains as follows with the base station radio frequency front end of the GSM system that the transmission combining path is two-in-one, and the receiving branch path is divided into two as an example:
在该实施例中，在发信单元11的发射合路器采用了二路合一路，合路器的输入与基站系统的二路发信机相接，发射合路器的合路输出接至发射接收双工器。合路器选用三分贝电桥式的二合一合路器，双工器采用同轴腔体式的双工器。In this embodiment, the transmitting combiner of the sending unit 11 adopts two-way combining one-way, the input of the combiner is connected with the two-way transmitter of the base station system, and the combined output of the transmitting combiner is connected to Transmit and receive duplexers. The combiner is a three-decibel bridge-type two-in-one combiner, and the duplexer is a coaxial cavity-type duplexer.
在主接收单元12中，低噪声放大器的输入与发信单元11的双工器相接，低噪声放大器的输出与主接收分路器相接，主接收分路器的二路输出接至基站系统的二路主收信机。In the
在分集接收单元13中，接收滤波器与分集天线Y2相接，接收滤波器的输出接低噪声放大器的输入相接，低噪声放大器的输出接分集接收分路器的输入相接，分集接收分路器的二路输出接至基站系统的分集收信机。分路器采用两个微带式的一分二分路器。接收滤波器选用同轴腔体式的接收滤波器。In the
该实施例将两个发信机的大功率射频信号通过二合一的合成器后经过同轴转接电缆15再经过同轴双工器发射出去，有发射信号的天线同时兼做接收天线Y1，将接收射频信号通过双工器后再经过低噪声放大器，再用微带式的一分二分路器送给两个主收信机；接收天线Y2作为分集接收用， 将另一路接收信号经过接收滤波器同样经过放大后、一分二后，送给两个分集收信机。主收信机与分集收信机输出的两路信号经过分集接收信号处理实现分集接收的增益。In this embodiment, the high-power radio frequency signals of the two transmitters are transmitted through the two-in-one synthesizer through the
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| CNB011269243A CN1194571C (en) | 2001-09-29 | 2001-09-29 | A radio frequency front end of a base transceiver station |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100388825C (en) * | 2005-10-24 | 2008-05-14 | 华为技术有限公司 | A signal combination device and base station common antenna feeder system realized by using it |
| WO2008128403A1 (en) * | 2007-04-19 | 2008-10-30 | Huawei Technologies Co., Ltd. | Signal combination method, device and system having different system, same band and antenna sharing |
| CN100450247C (en) * | 2005-04-07 | 2009-01-07 | 中兴通讯股份有限公司 | Device and method for on-line monitoring of radio frequency front-end module in CDMA base station |
| CN101147334B (en) * | 2005-03-30 | 2012-07-18 | 富士通株式会社 | Wireless communication system and wireless communication method |
| CN102934371A (en) * | 2010-05-14 | 2013-02-13 | 阿尔卡特朗讯 | Multiple antenna method for reducing inter-cell interference in multi-user wireless ststems |
| CN102271426B (en) * | 2007-04-30 | 2014-04-30 | 华为技术有限公司 | Radio frequency (RF) processing device and method for configuring same |
| CN106685438A (en) * | 2017-01-10 | 2017-05-17 | 广东欧珀移动通信有限公司 | RF circuit and terminal |
| CN110808722A (en) * | 2019-10-08 | 2020-02-18 | 珠海众通乐行网络科技有限公司 | Circuit for improving LTE diversity sensitivity |
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2001
- 2001-09-29 CN CNB011269243A patent/CN1194571C/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101147334B (en) * | 2005-03-30 | 2012-07-18 | 富士通株式会社 | Wireless communication system and wireless communication method |
| CN100450247C (en) * | 2005-04-07 | 2009-01-07 | 中兴通讯股份有限公司 | Device and method for on-line monitoring of radio frequency front-end module in CDMA base station |
| CN100388825C (en) * | 2005-10-24 | 2008-05-14 | 华为技术有限公司 | A signal combination device and base station common antenna feeder system realized by using it |
| WO2008128403A1 (en) * | 2007-04-19 | 2008-10-30 | Huawei Technologies Co., Ltd. | Signal combination method, device and system having different system, same band and antenna sharing |
| CN101034922B (en) * | 2007-04-19 | 2010-07-07 | 华为技术有限公司 | Signal mixing method, device and same-frequency band and common antenna feedback system for different systems |
| CN102271426B (en) * | 2007-04-30 | 2014-04-30 | 华为技术有限公司 | Radio frequency (RF) processing device and method for configuring same |
| CN102934371A (en) * | 2010-05-14 | 2013-02-13 | 阿尔卡特朗讯 | Multiple antenna method for reducing inter-cell interference in multi-user wireless ststems |
| US8995401B2 (en) | 2010-05-14 | 2015-03-31 | Alcatel Lucent | Multiple antenna method and apparatus for reducing inter-cell interference in multi-user wireless systems |
| CN106685438A (en) * | 2017-01-10 | 2017-05-17 | 广东欧珀移动通信有限公司 | RF circuit and terminal |
| CN110808722A (en) * | 2019-10-08 | 2020-02-18 | 珠海众通乐行网络科技有限公司 | Circuit for improving LTE diversity sensitivity |
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| CN1194571C (en) | 2005-03-23 |
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