CN111585048A - 8T8R symmetrical antenna system and multi-input multi-output power balancing method - Google Patents
8T8R symmetrical antenna system and multi-input multi-output power balancing method Download PDFInfo
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- CN111585048A CN111585048A CN202010407262.5A CN202010407262A CN111585048A CN 111585048 A CN111585048 A CN 111585048A CN 202010407262 A CN202010407262 A CN 202010407262A CN 111585048 A CN111585048 A CN 111585048A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/06—Arrays of individually energised antenna units similarly polarised and spaced apart
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/007—Details of, or arrangements associated with, antennas specially adapted for indoor communication
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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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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/0006—Particular feeding systems
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q23/00—Antennas with active circuits or circuit elements integrated within them or attached to them
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/0413—MIMO systems
- H04B7/0426—Power distribution
Abstract
The invention discloses an 8T8R symmetrical antenna system, which comprises a symmetrical 8-path transmission and power balancing module and a symmetrical 8-path broadband antenna module, wherein the symmetrical 8-path broadband antenna module comprises 8 paths of radiation antennas with the same size and mutually parallel positions, and each path of radiation antenna is respectively connected with the symmetrical 8-path transmission and power balancing module; the invention also discloses a multi-input multi-output power balancing method by applying the 8T8R symmetrical antenna system. The invention receives 8 paths of radio frequency signals which are processed and sent by a plurality of power equalization modules and have the same amplitude and the same frequency and the phase difference of 0 degree through the symmetrical 8 paths of broadband microstrip array antennas and then sends the radiation signals, thereby forming 8 paths of radiation signals with the same amplitude and phase and the same coverage range along 8 paths of transmission directions in space, enabling the mobile terminal to receive the 8 paths of radiation signals with the same amplitude and the same phase when moving in the signal coverage range, and having good receiving effect.
Description
Technical Field
The invention relates to the field of communication, in particular to an 8T8R symmetric antenna system and a multi-input multi-output power balancing method.
Background
With the development of mobile communication technology, Multiple-Input Multiple-output (MIMO) technology has been applied to various mobile communication systems to increase system capacity, wherein the MIMO antenna systems mostly adopt 2T2R, 4T4R and 4T6R, and at present, there is no application of balanced distribution technology for 8-channel radio frequency signals, and with the rapid development of 5G communication, the 8T8R antenna system will be more widely applied.
Moreover, due to the structural process and quality limitations of the original indoor coverage system, the coverage ranges, amplitudes and phases of the multiple paths of radiation signals transmitted at the same point are inconsistent, so that the mobile terminal can only receive multiple 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 above problems, the present invention provides an 8T8R symmetric antenna system, and provides a mimo power equalization method using the system, where the system receives 8 channels of radio frequency signals with equal amplitude and equal frequency and a phase difference of 0 degree, which are processed and transmitted by multiple power equalization modules, through a symmetric 8-channel broadband microstrip array antenna, and then transmits a radiation signal, so as to form 8 channels of radiation signals with the same amplitude and phase and the same coverage range in a space along 8 channels of transmission directions, so that a mobile terminal can receive 8 channels of radiation signals with equal amplitude and equal phase when moving within a signal coverage range, and has a good receiving effect.
The technical scheme of the invention is as follows:
an 8T8R symmetric antenna system comprises a symmetric 8-path transmission and power equalization module and a symmetric 8-path broadband antenna module, wherein the symmetric 8-path broadband antenna module comprises 8 radiation antennas with the same size and mutually parallel positions, and each radiation antenna is respectively connected with the symmetric 8-path transmission and power equalization module; wherein:
the symmetrical 8-path transmission and power equalization module is used for transmitting and equalizing 8 paths of radio frequency signals with equal amplitude, equal frequency and same phase and respectively sending the signals to 8 paths of radiation antennas;
and the radiation antenna is used for receiving 1 path of radio frequency signals from the symmetrical 8-path transmission and power equalization module and sending 1 path of radiation signals.
The working principle of the technical scheme is as follows:
the system receives 8 paths of radio frequency signals which are sent by the power equalization module and have the same amplitude and the same frequency and the phase difference of 0 degree through 8 in-phase and equal amplitude radiation antennas on the symmetrical 8 paths of broadband microstrip array antenna modules, and sends the radiation signals, so that 8 paths of radiation signals with the same amplitude and phase and the same coverage range are formed in space, the mobile terminal can receive 8 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.
In a further technical solution, the symmetrical 8-path transmission and power equalization module includes an 8T8R small base station and a power equalization module, a signal output end of the 8T8R small base station is connected to a signal input end of the power equalization module, and the power equalization module has 8 signal output ends respectively connected to 8-path radiation antennas; wherein:
the 8T8R small base station is used for generating 8 paths of radio frequency signals with equal amplitude and equal frequency and sending the signals to the power balancing module;
and the power balancing module is used for performing power distribution on the received 8 paths of radio frequency signals to enable the phase difference of the 8 paths of radio frequency signals to be 0 degree, and respectively sending the 8 paths of radio frequency signals after balanced distribution to the 8 paths of radiation antennas.
The power equalization module is used for carrying out phase processing on the radio-frequency signals, so that 8 paths of radio-frequency signals are equal in frequency, equal in amplitude and same in phase, 8 paths of radio-frequency signals with consistent amplitude and phase and consistent in coverage range are formed in space, and the technical problems that the amplitude of a plurality of paths of radio-frequency signals under the coverage of signals in the same area is uneven and the receiving effect is poor are solved.
In a further technical scheme, the power equalization module comprises a radio frequency power equalizer and 8 feeders, the radio frequency power equalizer has 8 symmetrical signal output ends, and the 8 signal output ends of the radio frequency power equalizer are respectively connected with 8 paths of radiation antennas through the 8 feeders; wherein:
the radio frequency power equalizer is used for adjusting the power and the phase of the 8 paths of radio frequency signals according to the phase difference of the 8 paths of radio frequency signals and the amplitude difference of the 8 feeders, equalizing and distributing the power of the 8 paths of radio frequency signals to ensure that the phase and the amplitude of the 8 paths of radio frequency signals are the same, and simultaneously sending the 8 paths of radio frequency signals after equalization distribution to the 8 feeders respectively;
and the feeder line is used for receiving the 1 path of radio frequency signals from the radio frequency power equalizer and sending the path of radio frequency signals to the 1 path of radiation antenna.
8 paths of radiation antennas are respectively connected with the radio frequency power equalizer through 8 paths of feeder lines, so that the timeliness and the accuracy of signal transmission are ensured.
In a further technical solution, the symmetric 8-way broadband antenna module is a symmetric 8-way broadband microstrip array antenna module.
And the backward radiation is reduced, and the coverage range of 8 paths of radiation signals is ensured to be consistent.
The invention also provides a method for carrying out multi-input multi-output power equalization by applying the 8T8R symmetrical antenna system, which adopts the technical scheme that:
a multi-input multi-output power equalization method comprises the following steps:
s1, transmitting and equalizing 8 paths of radio frequency signals with equal amplitude, equal frequency and same phase and respectively sending the signals to 8 paths of radiation antennas;
and S2, each path of radiation antenna receives the 1 path of radio frequency signal and sends the 1 path of radiation signal.
In a further technical solution, step S1 specifically includes:
s11 and 8T8R small base stations generate 8 paths of radio frequency signals with equal amplitude and equal frequency;
and S12, performing power distribution on the received 8 paths of radio frequency signals to enable the phase difference of the 8 paths of radio frequency signals to be 0 degree, and respectively sending the 8 paths of radio frequency signals after balanced distribution to the 8 paths of radiation antennas.
In a further technical solution, step S11 specifically includes:
s111, the radio frequency power equalizer adjusts the power and the phase of the 8 paths of radio frequency signals according to the phase difference of the 8 paths of radio frequency signals and the amplitude difference of the 8 feeders, balances and distributes the power of the 8 paths of radio frequency signals, enables the phase and the amplitude of the 8 paths of radio frequency signals to be the same, and simultaneously sends the 8 paths of radio frequency signals after balanced distribution to the 8 feeders respectively;
and S112, each feeder line respectively receives 1 path of radio frequency signals from the radio frequency power equalizer and sends the path of radio frequency signals to 1 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 8T8R small base station through a cable, the 8T8R 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 8 symmetrical radio frequency radiating 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 8 radio frequency radiating antennas according to certain proportion, the radio frequency power equalizer is also connected with a next radio frequency power equalizer through other two radio frequency transmission lines, the radio frequency power equalizer and the 8 radio frequency radiating antennas in each group form a node, 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 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 system receives 8 paths of radio frequency signals which are sent by the power equalization module and have the same amplitude and the same frequency and the phase difference of 0 degree through 8 in-phase and equal amplitude radiation antennas on the symmetrical 8 paths of broadband microstrip array antenna modules, and sends the radiation signals, so that 8 paths of radiation signals with the same amplitude and phase and the same coverage range are formed in space, the mobile terminal can receive 8 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 8 paths of radio-frequency signals are equal in frequency, equal in amplitude and same in phase, 8 paths of radio-frequency signals with consistent amplitude and phase and consistent in coverage range are formed in space, and the technical problems that the amplitude of a plurality of paths of radio-frequency signals under the coverage of signals in the same area is uneven and the receiving effect is poor are solved.
3. 8 paths of radiation antennas are respectively connected with the radio frequency power equalizer through 8 paths of feeder lines, so that the timeliness and the accuracy of signal transmission are ensured.
4. And by adopting the symmetrical 8-path broadband microstrip array antenna, the back radiation can be reduced, and the coverage range of 8-path radiation signals is ensured to be consistent.
Drawings
Fig. 1 is a flowchart of an 8T8R symmetric antenna system according to an embodiment of the present invention.
Description of reference numerals:
1. 8T8R small base station; 2. a radio frequency power equalizer; 3. a feeder line; 4. a radiating antenna.
Detailed Description
The embodiments of the present invention will be further described with reference to the accompanying drawings.
Example (b):
as shown in fig. 1, an 8T8R symmetric antenna system includes a symmetric 8-path transmission and power equalization module and a symmetric 8-path broadband antenna module, where the symmetric 8-path broadband antenna module includes 8 paths of radiation antennas 4 with the same size and parallel positions, and each path of radiation antenna 4 is connected to the symmetric 8-path transmission and power equalization module respectively; wherein:
the symmetrical 8-path transmission and power equalization module is used for transmitting and equalizing 8 paths of radio frequency signals with equal amplitude, equal frequency and same phase and respectively sending the signals to the 8 paths of radiation antennas 4;
and the radiation antenna 4 is used for receiving 1 path of radio frequency signals from the symmetrical 8-path transmission and power equalization module and sending 1 path of radiation signals.
The working principle of the technical scheme is as follows:
the system receives 8 paths of radio frequency signals which are sent by the power equalization module and have the same amplitude and the same frequency and the phase difference of 0 degree through 8 in-phase and equal amplitude radiation antennas 4 on the symmetrical 8 paths of broadband microstrip array antenna modules, and sends radiation signals, so that 8 paths of radiation signals with the same amplitude and phase and the same coverage range are formed in space, the mobile terminal can receive 8 paths of radiation signals with the same amplitude and the same phase when moving in the signal coverage range, and a good receiving effect is achieved.
In another embodiment, as shown in fig. 1, the symmetric 8-way transmission and power equalization module includes an 8T8R small base station 1 and a power equalization module, a signal output terminal of the 8T8R small base station 1 is connected to a signal input terminal of the power equalization module, and the power equalization module has 8 signal output terminals respectively connected to 8-way radiating antennas 4; wherein:
the 8T8R small base station 1 is used for generating 8 paths of radio frequency signals with equal amplitude and equal frequency and sending the signals to the power balancing module;
and the power balancing module is used for performing power distribution on the received 8 paths of radio frequency signals to enable the phase difference of the 8 paths of radio frequency signals to be 0 degree, and respectively sending the 8 paths of radio frequency signals after balanced distribution to the 8 paths of radiation antennas 4.
The power equalization module is used for carrying out phase processing on the radio-frequency signals, so that 8 paths of radio-frequency signals are equal in frequency, equal in amplitude and same in phase, 8 paths of radio-frequency signals with consistent amplitude and phase and consistent in coverage range are formed in space, and the technical problems that the amplitude of a plurality of paths of radio-frequency signals under the coverage of signals in the same area is uneven and the receiving effect is poor are solved.
In another embodiment, as shown in fig. 1, the power equalization module includes a radio frequency power equalizer 2 and 8 feeders 3, the radio frequency power equalizer 2 has 8 symmetrical signal output ends, and the 8 signal output ends of the radio frequency power equalizer 2 are respectively connected with 8 radiating antennas 4 through the 8 feeders 3; wherein:
the radio frequency power equalizer 2 is used for adjusting the power and the phase of the 8 paths of radio frequency signals according to the phase difference of the 8 paths of radio frequency signals and the amplitude difference of the 8 feeder lines 3, equalizing and distributing the power of the 8 paths of radio frequency signals to enable the phase and the amplitude of the 8 paths of radio frequency signals to be the same, and simultaneously sending the 8 paths of radio frequency signals after equalization distribution to the 8 feeder lines 3 respectively;
and the feeder line 3 is used for receiving 1 path of radio frequency signals from the radio frequency power equalizer 2 and sending the path of radio frequency signals to the 1 path of radiation antenna 4.
8 paths of radiation antennas 4 are respectively connected with the radio frequency power equalizer 2 through 8 paths of feeder lines 3, and timeliness and accuracy of signal transmission are guaranteed.
In another embodiment, the symmetric 8-way broadband antenna module is a symmetric 8-way broadband microstrip array antenna module.
And the backward radiation is reduced, and the coverage range of 8 paths of radiation signals is ensured to be consistent.
The symmetrical 8-path broadband microstrip array antenna module transmits 8-path radio frequency signals meeting the frequency required by MIMO application according to the specific requirement of the indoor mobile communication system for applying MIMO, the amplitude and the frequency of the 8-path radio frequency signals are the same, and the phase difference is 0 degree. It can be understood that, due to different indoor mobile communication systems, the frequency required for applying MIMO is different, for example, if the frequency required for applying MIMO in 5G is 23300-. The 8T8R small base station sends 8 paths of radio frequency signals with equal amplitude and equal frequency and a phase difference of 0 degree to the symmetrical 8 paths of broadband microstrip array antenna modules, so that transmission paths of the 8 paths of radio frequency signals are equal, and when the 8 paths of radio frequency signals reach the symmetrical 8 paths of broadband microstrip array antenna modules, the 8 paths of radio frequency signals are the same in phase and amplitude.
The symmetrical 8-path broadband microstrip array antenna module comprises 8-path radiation antennas, the size and the structural process of the 8-path radiation antennas are completely the same, and the 8-path radiation antennas are in the same phase and are parallel. It is to be noted that, as will be understood by those skilled in the art, the size of the symmetric 8-way wideband microstrip array antenna module is specifically set according to the frequency required for applying MIMO in the indoor mobile communication system.
The 8 symmetrical broadband microstrip array antenna modules transmit 8 paths of radiation signals to indoor space after receiving 8 paths of radio frequency signals through 8 paths of radiation antennas, the 8 paths of radio frequency signals have equal amplitude and equal frequency, the phase difference is 0 degree, and the 8 paths of radiation antennas are parallel in phase, so that electric field vectors of the 8 paths of radio frequency signals are parallel to each other in space and have equal amplitude effects, so that the 8 paths of radiation signals have correlation, and the 8 paths of radiation antennas are completely the same in size and structural process and are positioned on the same symmetrical 8 paths of broadband antennas, so that the radiation ranges of the 8 paths of radiation signals are consistent in space, and in the moving process of an indoor mobile terminal in a signal coverage range, the 8 paths of correlated radiation signals can be received all the time, a good equal amplitude receiving effect can be obtained, and MIMO is applied to the indoor mobile communication system to the maximum extent.
Therefore, the system receives 8 paths of radio frequency signals which are sent by the power equalization module and have the same amplitude and the same frequency and the phase difference of 0 degree and then sends radiation signals through 8 antennas which are in the same phase and the same amplitude on the symmetrical 8 paths of broadband microstrip array antenna modules, so that 8 paths of radiation signals which have the same amplitude and phase and the same coverage range are formed in space, and the mobile terminal can receive 8 paths of radiation signals with the same amplitude and the same phase when moving in the signal coverage range, and has a good receiving effect. Meanwhile, the indoor distributed antenna system provided by the embodiment realizes the transmission of 8 paths of signals only by using one symmetrical 8 paths of broadband antenna modules, and the antenna is portable and is favorable for indoor arrangement.
Because the frequency of 8 ways of radio frequency signals is the same, the wavelength and the propagation period of 8 ways of radio frequency signals are the same, because 8 ways of radio frequency signals are transmitted through 8 feeders, the length of the feeder is the transmission path of the radio frequency signals, and the radio frequency power equalizer keeps the same frequency and the same phase of the transmitted 8 ways of radio frequency signals according to the obtained same phase of the 8 ways of radio frequency signals and the symmetrical consistency of the lengths of the 8 feeders, thereby controlling the transmission power of the 8 ways of radio frequency signals, so that when the 8 ways of radio frequency signals are transmitted to the 8 ways of radiating antennas through the 8 feeders, the power of the 8 ways of radio frequency signals is reduced in equal amplitude and is in phase.
After the radio frequency power equalizer receives the 8 paths of radio frequency signals, the power distribution and equalization processing are carried out on the 8 paths of radio frequency signals, so that the power distribution and constant-amplitude and same-phase processing are carried out on the 8 paths of radio frequency signals according to the specific power of the 8 paths of radio frequency signals. The radio frequency power equalizer sends 8 paths of radio frequency signals with equal amplitude and equal frequency and a phase difference of 0 degree to the symmetrical 8 paths of broadband antenna modules through 8 equal-length feeders, so that transmission paths of the 8 paths of radio frequency signals are guaranteed to be equal, and when the 8 paths of radio frequency signals reach the symmetrical 8 paths of broadband antenna modules, the phase difference of the 8 paths of radio frequency signals is still 0 degree. 8 paths of radiation antennas are connected with the radio frequency power equalizer through 8 feeders respectively, and timeliness and accuracy of signal transmission are guaranteed.
A method for performing multi-input multi-output power equalization by using the 8T8R symmetric antenna system comprises the following steps:
s1, transmitting and equalizing 8 paths of radio frequency signals with equal amplitude, equal frequency and same phase and respectively sending the signals to 8 paths of radiation antennas;
and S2, each path of radiation antenna receives the 1 path of radio frequency signal and sends the 1 path of radiation signal.
In another embodiment, step S1 specifically includes:
s11 and 8T8R small base stations generate 8 paths of radio frequency signals with equal amplitude and equal frequency;
and S12, performing power distribution on the received 8 paths of radio frequency signals to enable the phase difference of the 8 paths of radio frequency signals to be 0 degree, and respectively sending the 8 paths of radio frequency signals after balanced distribution to the 8 paths of radiation antennas.
In another embodiment, step S11 specifically includes:
s111, the radio frequency power equalizer adjusts the power and the phase of the 8 paths of radio frequency signals according to the phase difference of the 8 paths of radio frequency signals and the amplitude difference of the 8 feeders, balances and distributes the power of the 8 paths of radio frequency signals, enables the phase and the amplitude of the 8 paths of radio frequency signals to be the same, and simultaneously sends the 8 paths of radio frequency signals after balanced distribution to the 8 feeders respectively;
and S112, each feeder line respectively receives 1 path of radio frequency signals from the radio frequency power equalizer and sends the path of radio frequency signals to 1 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 8T8R small base station through a cable, the 8T8R 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 8 symmetrical radio frequency radiating 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 8 radio frequency radiating antennas according to certain proportion, the radio frequency power equalizer is also connected with a next radio frequency power equalizer through other two radio frequency transmission lines, the radio frequency power equalizer and the 8 radio frequency radiating antennas in each group form a node, 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 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 above-mentioned embodiments only express the specific embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention.
Claims (6)
1. An 8T8R symmetric antenna system is characterized by comprising a symmetric 8-path transmission and power equalization module and a symmetric 8-path broadband antenna module, wherein the symmetric 8-path broadband antenna module comprises 8 paths of radiation antennas with the same size and mutually parallel positions, and each path of radiation antenna is respectively connected with the symmetric 8-path transmission and power equalization module; wherein:
the symmetrical 8-path transmission and power equalization module is used for transmitting and equalizing 8 paths of radio frequency signals with equal amplitude, equal frequency and same phase and respectively sending the signals to 8 paths of radiation antennas;
and the radiation antenna is used for receiving 1 path of radio frequency signals from the symmetrical 8-path transmission and power equalization module and sending 1 path of radiation signals.
2. The 8T8R symmetric antenna system according to claim 1, wherein the symmetric 8-way transmission and power equalization module comprises an 8T8R small base station and a power equalization module, the signal output terminal of the 8T8R small base station is connected to the signal input terminal of the power equalization module, the power equalization module has 8 signal output terminals respectively connected to 8-way radiating antennas; wherein:
the 8T8R small base station is used for generating 8 paths of radio frequency signals with equal amplitude and equal frequency and sending the signals to the power balancing module;
and the power balancing module is used for performing power distribution on the received 8 paths of radio frequency signals to enable the phase difference of the 8 paths of radio frequency signals to be 0 degree, and respectively sending the 8 paths of radio frequency signals after balanced distribution to the 8 paths of radiation antennas.
3. The 8T8R symmetric antenna system according to claim 2, wherein the power equalizing module comprises a radio frequency power equalizer and 8 feeders, the radio frequency power equalizer has 8 symmetric signal outputs, and the 8 signal outputs of the radio frequency power equalizer are respectively connected to 8 radiating antennas through the 8 feeders; wherein:
the radio frequency power equalizer is used for adjusting the power and the phase of the 8 paths of radio frequency signals according to the phase difference of the 8 paths of radio frequency signals and the amplitude difference of the 8 feeders, equalizing and distributing the power of the 8 paths of radio frequency signals to ensure that the phase and the amplitude of the 8 paths of radio frequency signals are the same, and simultaneously sending the 8 paths of radio frequency signals after equalization distribution to the 8 feeders respectively;
and the feeder line is used for receiving the 1 path of radio frequency signals from the radio frequency power equalizer and sending the path of radio frequency signals to the 1 path of radiation antenna.
4. A multi-input multi-output power equalization method is characterized by comprising the following steps:
s1, transmitting and equalizing 8 paths of radio frequency signals with equal amplitude, equal frequency and same phase and respectively sending the signals to 8 paths of radiation antennas;
and S2, each path of radiation antenna receives the 1 path of radio frequency signal and sends the 1 path of radiation signal.
5. The method according to claim 4, wherein the step S1 specifically includes:
s11 and 8T8R small base stations generate 8 paths of radio frequency signals with equal amplitude and equal frequency;
and S12, performing power distribution on the received 8 paths of radio frequency signals to enable the phase difference of the 8 paths of radio frequency signals to be 0 degree, and respectively sending the 8 paths of radio frequency signals after balanced distribution to the 8 paths of radiation antennas.
6. The method for equalizing multiple-input multiple-output power of claim 5, wherein step S11 specifically comprises:
s111, the radio frequency power equalizer adjusts the power and the phase of the 8 paths of radio frequency signals according to the phase difference of the 8 paths of radio frequency signals and the amplitude difference of the 8 feeders, balances and distributes the power of the 8 paths of radio frequency signals, enables the phase and the amplitude of the 8 paths of radio frequency signals to be the same, and simultaneously sends the 8 paths of radio frequency signals after balanced distribution to the 8 feeders respectively;
and S112, each feeder line respectively receives 1 path of radio frequency signals from the radio frequency power equalizer and sends the path of radio frequency signals to 1 path of radiation antenna.
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| CN205811053U (en) * | 2016-07-18 | 2016-12-14 | 桂林电子科技大学 | A kind of communication in moving ground system of search and track aerial target |
| GB201801592D0 (en) * | 2017-01-31 | 2018-03-14 | Smart Antenna Tech Limited | Beam-Steering reconfigurable Antenna Arrays |
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Application publication date: 20200825 |