阅读说明：本技术 2t2r对称天线系统及多输入多输出功率均衡方法 (2T2R symmetrical antenna system and multi-input multi-output power balancing method ) 是由 刘巍滟 刘类英 冯愉 于 2019-08-21 设计创作，主要内容包括：本发明公开了一种2T2R对称天线系统及多输入多输出功率均衡方法,该系统包括：对称两路传输及功率均衡模块和对称两路宽带天线模块,所述对称两路宽带天线模块包括尺寸相同且位置相互平行并分别与所述对称两路传输及功率均衡模块连接的第一路辐射天线和第二路辐射天线；所述对称两路传输及功率均衡模块用于生成等幅等频且同相的第一射频信号和第二射频信号并发送给对称两路宽带天线模块；所述第一路辐射天线和第二路辐射天线分别用于接收所述第一射频信号和第二射频信号并发送第一辐射信号和第二辐射信号。本发明提供的2T2R对称天线系统及多输入多输出功率均衡方法,实现了2T2R小基站两路辐射信号在室内空间上增益范围一致,实现良好的室内覆盖效果。(The invention discloses a 2T2R symmetrical antenna system and a multi-input multi-output power balancing method, wherein the system comprises: the two-path broadband antenna module comprises a first path of radiation antenna and a second path of radiation antenna which have the same size and are parallel to each other in position and are respectively connected with the two-path transmission and power balancing module; the symmetrical two-path transmission and power equalization module is used for generating a first radio frequency signal and a second radio frequency signal which have equal amplitudes, equal frequencies and same phases and sending the first radio frequency signal and the second radio frequency signal to the symmetrical two-path broadband antenna module; the first path of radiation antenna and the second path of radiation antenna are respectively used for receiving the first radio frequency signal and the second radio frequency signal and sending a first radiation signal and a second radiation signal. The 2T2R symmetrical antenna system and the multi-input multi-output power balancing method provided by the invention realize the gain range consistency of two paths of radiation signals of the 2T2R small base station on the indoor space, and realize good indoor coverage effect.)

1. A2T 2R symmetric antenna system is characterized by comprising a symmetric two-path transmission and power balancing module and a symmetric two-path broadband antenna module, wherein the symmetric two-path broadband antenna module comprises a first path of radiating antenna and a second path of radiating antenna which have the same size and are parallel to each other in position, and the first path of radiating antenna and the second path of radiating antenna are respectively connected with the symmetric two-path transmission and power balancing module;

the symmetrical two-path transmission and power equalization module is used for transmitting and equalizing a first radio frequency signal and a second radio frequency signal which are equal in amplitude, equal in frequency and same in phase and sending the first radio frequency signal and the second radio frequency signal to the symmetrical two-path broadband antenna module;

the first path of radiating antenna is used for receiving the first radio frequency signal and sending a first radiating signal;

and the second path of radiation antenna is used for receiving the second radio frequency signal and sending a second radiation signal.

2. The symmetrical 2T2R antenna system according to claim 1, wherein the symmetrical two-path transmission and power equalization module comprises a 2T2R small base station and a power equalization module, the 2T2R small base station is connected to the power equalization module, and the power equalization module is connected to the first and second radiating antennas respectively;

the 2T2R small base station is configured to generate a first radio frequency signal and a second radio frequency signal with equal amplitude and equal frequency, and send the first radio frequency signal and the second radio frequency signal to the power equalization module;

the power equalization module is configured to perform power distribution on the received first radio frequency signal and/or second radio frequency signal, so that a phase difference between the first radio frequency signal and the second radio frequency signal is 0 degree, send the processed first radio frequency signal to the first path of radiation antenna, and send the second radio frequency signal to the second path of radiation antenna.

3. The 2T2R symmetric antenna system according to claim 2, wherein the power equalizing module comprises a radio frequency power equalizer, a first feeder and a second feeder, the radio frequency power equalizer is connected to the first radiating antenna through the first feeder, and the radio frequency power equalizer is connected to the second radiating antenna through the second feeder;

the radio frequency power equalizer is used for adjusting the power and the phase of the first radio frequency signal and the second radio frequency signal according to the phase difference between the first radio frequency signal and the second radio frequency signal and the amplitude difference between the first feeder line and the second feeder line, equalizing and distributing the power of the first radio frequency signal and the power of the second radio frequency signal, enabling the phase and the amplitude of the first radio frequency signal and the amplitude of the second radio frequency signal to be the same, and simultaneously sending the first radio frequency signal and the second radio frequency signal to the first feeder line and the second feeder line respectively;

the first feeder line is used for receiving the first radio frequency signal and sending the first radio frequency signal to the first path of radiation antenna;

and the second feeder line is used for receiving the second radio frequency signal and sending the second radio frequency signal to the second path of radiation antenna.

4. A method for mimo power equalization using a 2T2R symmetric antenna system according to any of claims 1-3, comprising the steps of:

the symmetrical two-path transmission and power equalization module generates a first radio frequency signal and a second radio frequency signal which have equal amplitude, equal frequency and same phase, and respectively sends the first radio frequency signal and the second radio frequency signal to the first path of radiating antenna and the second path of radiating antenna;

the first path of radiation antenna receives the first radio frequency signal and sends a first radiation signal;

and the second path of radiation antenna receives the second radio frequency signal and sends a second radiation signal.

5. The mimo power balancing method according to claim 4, wherein the two-path transmission and power balancing module specifically comprises:

the 2T2R small base station generates a first radio frequency signal and a second radio frequency signal with equal amplitude and equal frequency, and sends the first radio frequency signal and the second radio frequency signal to a power balancing module;

and the power balancing module is used for carrying out power distribution on the received first radio frequency signal and/or second radio frequency signal to enable the phase difference between the first radio frequency signal and the second radio frequency signal to be 0 degree, sending the first radio frequency signal to the first path of radiating antenna and sending the second radio frequency signal to the second path of radiating antenna.

6. The mimo power balancing method according to claim 5, wherein the power balancing module specifically comprises:

the radio frequency power equalizer receives the first radio frequency signal and the second radio frequency signal, adjusts the power and the phase of the first radio frequency signal and the second radio frequency signal according to the phase difference of the first radio frequency signal and the second radio frequency signal and the amplitude difference of the first feeder line and the second feeder line, equalizes and distributes the power of the first radio frequency signal and the second radio frequency signal, enables the phase and the amplitude of the first radio frequency signal and the amplitude of the second radio frequency signal to be identical, and simultaneously sends the first radio frequency signal and the second radio frequency signal to the first feeder line and the second feeder line respectively;

the first feeder line receives the first radio frequency signal and sends the first radio frequency signal to the first radiating antenna;

and the second feeder line receives the second radio frequency signal and sends the second radio frequency signal to the second path of radiation antenna.

Technical Field

The invention relates to the technical field of communication, in particular to a 2T2R symmetric antenna system and a multi-input multi-output power balancing method.

Background

With the development of mobile communication technology, single-input Multiple-output (MIMO) technology has been applied to various mobile communication systems to increase system capacity, such as: a Long Term Evolution (LTE) system, a Wideband Code Division Multiple Access (WCDMA) system, and the like.

As indoor communication traffic is heavier and heavier, it is very necessary to apply MIMO in an indoor mobile communication system. At present, a 2T2R symmetric antenna system and a MIMO power equalization method mainly receive two equal-amplitude equal-frequency radio frequency signals through two symmetric broadband antennas and then send two equal-amplitude in-phase radiation signals, so as to provide two equal-amplitude in-phase radiation signals for a mobile terminal in an indoor space. However, due to the structural process and quality limitations of the original indoor coverage system, the coverage ranges, amplitudes and phases of two paths of radiation signals transmitted from the same point are inconsistent, so that the mobile terminal can only receive two paths of radio frequency signals with uneven amplitudes under the coverage of signals in the same area in the moving process, the receiving effect is poor, and the MIMO application effect is poor.

Disclosure of Invention

In order to solve the problems in the prior art, the invention provides a 2T2R symmetric antenna system and a multi-input multi-output power balancing method, two paths of radio frequency signals which are processed and sent by a plurality of power balancing modules and have equal amplitude and equal frequency and phase difference of 0 degree are received by a symmetric two-path broadband microstrip array antenna, and then radiation signals are sent, so that radiation signals with consistent amplitude and phase in a rectangular coverage range are formed in space along two paths of transmission directions, a mobile terminal can receive two paths of radiation signals with equal amplitude and equal phase when moving in the signal coverage range, and a good receiving effect is achieved.

In order to achieve the purpose, the invention adopts the technical scheme that:

A2T 2R symmetrical antenna system comprises a symmetrical two-path transmission and power balancing module and a symmetrical two-path broadband antenna module, wherein the symmetrical two-path broadband antenna module comprises a first path of radiating antenna and a second path of radiating antenna which are same in size and parallel to each other in position, and the first path of radiating antenna and the second path of radiating antenna are respectively connected with the symmetrical two-path transmission and power balancing module;

the symmetrical two-path transmission and power equalization module is used for generating a first radio frequency signal and a second radio frequency signal which are equal in amplitude, equal in frequency and same in phase and sending the first radio frequency signal and the second radio frequency signal to the symmetrical two-path broadband antenna module;

the first path of radiating antenna is used for receiving the first radio frequency signal and sending a first radiating signal;

and the second path of radiation antenna is used for receiving the second radio frequency signal and sending a second radiation signal.

The system receives two paths of radio frequency signals which are transmitted by the power equalization module processing module and have the same amplitude and the same frequency and the phase difference of 0 degree through the two antennas which are in the same phase and the same amplitude on the two symmetrical broadband microstrip array antenna modules and then transmits the radiation signals, so that two paths of radiation signals which have the same amplitude and phase and the same coverage range are formed in space, the mobile terminal can receive the two paths of radiation signals which have the same amplitude and the same phase when moving in the signal coverage range, and the receiving effect is good.

Preferably, the symmetrical two-path transmission and power balancing module includes a 2T2R small base station and a power balancing module, the 2T2R small base station is connected to the power balancing module, and the power balancing module is respectively connected to the first path of radiation antenna and the second path of radiation antenna;

the 2T2R small base station is configured to generate a first radio frequency signal and a second radio frequency signal with equal amplitude and equal frequency, and send the first radio frequency signal and the second radio frequency signal to the power equalization module;

the power equalization module is configured to perform power distribution on the received first radio frequency signal and/or second radio frequency signal, so that a phase difference between the first radio frequency signal and the second radio frequency signal is 0 degree, send the first radio frequency signal to the first path of radiation antenna, and send the second radio frequency signal to the second path of radiation antenna.

The power equalization module is used for carrying out phase processing on the radio-frequency signals, so that the first radio-frequency signals and the second radio-frequency signals are equal in frequency, equal in amplitude and same in phase, and two paths of radio-frequency signals with the same amplitude and phase and the same coverage range are formed in space.

Preferably, the power equalization module includes a radio frequency power equalizer, a first feeder line and a second feeder line, the radio frequency power equalizer is connected to the first path of radiating antenna through the first feeder line, and the radio frequency power equalizer is connected to the second path of radiating antenna through the second feeder line;

the radio frequency power equalizer is used for adjusting the power and the phase of the first radio frequency signal and the second radio frequency signal according to the phase difference between the first radio frequency signal and the second radio frequency signal and the amplitude difference between the first feeder line and the second feeder line, equalizing and distributing the power of the first radio frequency signal and the power of the second radio frequency signal, enabling the phase and the amplitude of the first radio frequency signal and the amplitude of the second radio frequency signal to be the same, and simultaneously sending the first radio frequency signal and the second radio frequency signal to the first feeder line and the second feeder line respectively;

the first feeder line is used for receiving the first radio frequency signal and sending the first radio frequency signal to the first path of radiation antenna;

and the second feeder line is used for receiving the second radio frequency signal and sending the second radio frequency signal to the second path of radiation antenna.

Two paths of radiation antennas are respectively connected with the radio frequency power equalizer through two paths of feeders, so that the timeliness and the accuracy of signal transmission are ensured.

Preferably, the two symmetrical broadband antenna modules are two symmetrical broadband microstrip array antenna modules.

And the backward radiation is reduced, and the coverage range of two paths of radiation signals is ensured to be consistent.

The invention also provides a multi-input multi-output power balancing method by applying the 2T2R symmetrical antenna system, and the technical scheme is as follows:

a multi-input multi-output power balancing method comprises the following steps:

the symmetrical two-path transmission and power equalization module generates a first radio frequency signal and a second radio frequency signal which have equal amplitude, equal frequency and same phase, and respectively sends the first radio frequency signal and the second radio frequency signal to the first path of radiating antenna and the second path of radiating antenna;

the first path of radiation antenna receives the first radio frequency signal and sends a first radiation signal;

and the second path of radiation antenna receives the second radio frequency signal and sends a second radiation signal.

Preferably, the symmetrical two-path transmission and power balancing module includes a 2T2R small base station and a power balancing module, and the working steps of the symmetrical two-path transmission and power balancing module are specifically:

the 2T2R small base station generates a first radio frequency signal and a second radio frequency signal with equal amplitude and equal frequency, and sends the first radio frequency signal and the second radio frequency signal to a power balancing module;

and the power balancing module is used for carrying out power distribution on the received first radio frequency signal and/or second radio frequency signal to enable the phase difference between the first radio frequency signal and the second radio frequency signal to be 0 degree, sending the first radio frequency signal to the first path of radiating antenna and sending the second radio frequency signal to the second path of radiating antenna.

Preferably, the power equalization module includes a radio frequency power equalizer, a first feeder line and a second feeder line, and the working steps of the power equalization module are specifically:

the radio frequency power equalizer adjusts the power and the phase of the first radio frequency signal and the second radio frequency signal according to the phase difference of the first radio frequency signal and the second radio frequency signal and the amplitude difference of the first feeder line and the second feeder line, equalizes and distributes the power of the first radio frequency signal and the second radio frequency signal, enables the phase and the amplitude of the first radio frequency signal and the amplitude of the second radio frequency signal to be identical, and simultaneously sends the first radio frequency signal and the second radio frequency signal to the first feeder line and the second feeder line respectively;

the first feeder line receives the first radio frequency signal and sends the first radio frequency signal to the first radiating antenna;

and the second feeder line receives the second radio frequency signal and sends the second radio frequency signal to the second path of radiation antenna.

The working principle of the 5G signal coverage of the invention is as follows: an outdoor 5G macro base station sends signals to an indoor 2T2R small base station through a cable, the 2T2R small base station transmits radio frequency signals to a radio frequency power equalizer through two radio frequency transmission lines, the radio frequency power equalizer is connected with two symmetrical radiation antennas, the radio frequency power equalizer equalizes and distributes the power of the radio frequency signals through an internal coupling circuit, certain power (preset value) is distributed to the two radiation antennas according to a certain proportion, the radio frequency power equalizer is also connected with the next radio frequency power equalizer through other two radio frequency transmission lines, the radio frequency power equalizer and the two radiation antennas of each group form a node, the signal coverage of the whole indoor floor is realized through the series connection of a plurality of nodes, the lengths of the radio frequency transmission lines connecting the two adjacent radio frequency power equalizers are equal, and four radio frequency transmission lines connected with two ends of the same radio frequency power equalizer need to ensure high symmetry, and a plurality of radiation antennas connected with each radio frequency power equalizer need to ensure high symmetry, so that radio frequency signals can keep phase consistency all the time. The power distributed to each path of radiating antenna in each node is kept consistent, so that the power proportion distributed to the corresponding radiating antenna by the radio frequency power equalizer on different nodes is different, and the loss of a radio frequency signal during transmission of the radio frequency transmission line is known because the length of the radio frequency transmission line is preset, so that the power proportion distributed to the radiating antenna in each node by the radio frequency power equalizer in each node is as follows: the allocated power/(power transmitted from the previous node — power loss) of the predetermined radiation antenna.

The invention has the beneficial effects that:

1. the two paths of symmetrical broadband microstrip array antennas receive the two paths of radio frequency signals which are processed and sent by the power balancing modules, have the same amplitude and the same frequency and have the phase difference of 0 degree, and then send the radiation signals, so that the radiation signals with the consistent amplitude and the phase in a rectangular coverage range are formed in the space along the two paths of transmission directions, the mobile terminal can receive the two paths of radiation signals with the same amplitude and the same phase when moving in the signal coverage range, and the receiving effect is good.

2. The power equalization module is used for carrying out phase processing on the radio-frequency signals, so that the first radio-frequency signals and the second radio-frequency signals are equal in frequency, equal in amplitude and same in phase, and two paths of radio-frequency signals with the same amplitude and phase and the same coverage range are formed in space.

3. Two paths of radiation antennas are respectively connected with the radio frequency power equalizer through two paths of feeders, so that the timeliness and the accuracy of signal transmission are ensured.

4. The two symmetrical broadband antenna modules are two symmetrical broadband microstrip array antenna modules, so that the back radiation is reduced, and the coverage range of two paths of radiation signals is consistent.

Drawings

Fig. 1 is a schematic structural diagram of a 2T2R symmetric antenna system according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a symmetrical two-path transmission and power equalization module according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a power balancing module according to an embodiment of the present invention;

fig. 4 is a flowchart of a mimo power balancing method according to an embodiment of the present invention;

fig. 5 is a flowchart illustrating a working process of the symmetrical two-path transmission and power equalization module according to the embodiment of the present invention;

fig. 6 is a flowchart illustrating operation of the power balancing module according to an embodiment of the present invention.

Description of reference numerals:

1. two symmetrical transmission and power balancing modules; 11. 2T2R small base station; 12. a power balancing module; 121. a radio frequency power equalizer; 122. a first feed line; 123. a second feed line;

2. two symmetrical broadband antenna modules; 21. a first path of radiating antenna; 22. the second path of radiation antenna.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.