CN110581367B - 4T6R symmetrical antenna system and multi-input multi-output power balancing method - Google Patents
4T6R symmetrical antenna system and multi-input multi-output power balancing method Download PDFInfo
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- CN110581367B CN110581367B CN201910775535.9A CN201910775535A CN110581367B CN 110581367 B CN110581367 B CN 110581367B CN 201910775535 A CN201910775535 A CN 201910775535A CN 110581367 B CN110581367 B CN 110581367B
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- H01Q—ANTENNAS, i.e. RADIO AERIALS
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- 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
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- H01Q21/00—Antenna arrays or systems
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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
- 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
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Abstract
The invention discloses a 4T6R symmetrical antenna system and a multi-input multi-output power balancing method, wherein the system comprises a symmetrical four-path transmission and power balancing module and a symmetrical six-path broadband antenna module, wherein the symmetrical six-path broadband antenna module comprises a first path of radiating antenna, a second path of radiating antenna, a third path of radiating antenna, a fourth path of radiating antenna, a fifth path of radiating antenna and a sixth path of radiating antenna which have the same size and are mutually parallel in position; the symmetrical four-path transmission and power equalization module is used for generating a first radio frequency signal, a second radio frequency signal, a third radio frequency signal, a fourth radio frequency signal, a fifth radio frequency signal and a sixth radio frequency signal which are equal in amplitude, equal in frequency and same in phase and sending the signals to the symmetrical six-path broadband antenna module. The invention forms six paths of radiation signals with consistent amplitude and phase and coverage range in space, so that the mobile terminal can receive six paths of radiation signals with equal amplitude and equal phase when moving in the signal coverage range, and good indoor coverage effect is realized.
Description
Technical Field
The invention relates to the technical field of communication, in particular to a 4T6R symmetrical 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, 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 4T6R symmetric antenna system and a MIMO power equalization method using MIMO mainly receive six equal-amplitude equal-frequency radio frequency signals through a symmetric six-path broadband antenna, and then transmit six equal-amplitude in-phase radiation signals, thereby providing six 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 six radiation signals transmitted at the same point are inconsistent, so that the mobile terminal can only receive six 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 4T6R symmetric antenna system and a multi-input multi-output power equalization method, six paths of radio frequency signals with equal amplitude and equal frequency and 0-degree phase difference are processed and sent by a plurality of power equalization modules through a symmetric four-path broadband microstrip array antenna, and then radiation signals are sent, so that six paths of radiation signals with the same amplitude and phase and the same coverage range are formed in the space along six paths of transmission directions, and a mobile terminal can receive the six paths of radiation signals with the equal amplitude and the equal phase when moving in the signal coverage range, thereby having good receiving effect.
The technical scheme adopted by the invention is as follows:
A4T 6R symmetric antenna system comprises a symmetric four-path transmission and power balancing module and a symmetric six-path broadband antenna module, wherein the symmetric six-path broadband antenna module comprises a first path of radiating antenna, a second path of radiating antenna, a third path of radiating antenna, a fourth path of radiating antenna, a fifth path of radiating antenna and a sixth path of radiating antenna which are same in size and parallel to each other in position, and the first path of radiating antenna, the second path of radiating antenna, the third path of radiating antenna, the fourth path of radiating antenna, the fifth path of radiating antenna and the sixth path of radiating antenna are respectively connected with the symmetric four-path transmission and power balancing module; wherein:
the symmetrical four-path transmission and power equalization module is used for transmitting and equalizing four paths of radio-frequency signals with equal amplitude, equal frequency and same phase, distributing the power of the four paths of radio-frequency signals to generate six paths of radio-frequency signals with equal power, namely a first radio-frequency signal, a second radio-frequency signal, a third radio-frequency signal, a fourth radio-frequency signal, a fifth radio-frequency signal and a sixth radio-frequency signal, and sending the first radio-frequency signal, the second radio-frequency signal, the third radio-frequency signal, the fourth radio-frequency signal, the fifth radio-frequency signal and the sixth radio-frequency signal to the symmetrical six paths of broadband antenna modules;
the symmetrical six-path broadband antenna module is used for receiving the first radio-frequency signal and sending a first radiation signal through the first path radiation antenna, receiving the second radio-frequency signal and sending a second radiation signal through the second path radiation antenna, receiving the third radio-frequency signal and sending a third radiation signal through the third path radiation antenna, receiving the fourth radio-frequency signal and sending a fourth radiation signal through the fourth path radiation antenna, receiving the fifth radio-frequency signal and sending a fifth radiation signal through the fifth path radiation antenna, and receiving the sixth radio-frequency signal and sending a sixth radiation signal through the sixth path radiation antenna.
The system receives six paths of radio frequency signals which are processed and sent by the power equalization modules through the symmetrical four paths of broadband microstrip array antennas, have the same amplitude and the same frequency and have the phase difference of 0 degree, and then sends radiation signals, so that six paths of radiation signals with the same amplitude and phase and the same coverage range are formed in space, the mobile terminal can receive the six 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.
Further, the symmetrical four-path transmission and power balancing module comprises a 4T6R small base station and a power balancing module, the 4T6R small base station is connected with the power balancing module, and the power balancing module is respectively connected with the first path of radiation antenna, the second path of radiation antenna, the third path of radiation antenna, the fourth path of radiation antenna, the fifth path of radiation antenna and the sixth path of radiation antenna; wherein:
the 4T6R small base station is used for generating four paths of radio frequency signals with equal amplitude and equal frequency and sending the four paths of radio frequency signals to the power balancing module;
the power equalization module is configured to perform power distribution on the received four radio frequency signals to generate six radio frequency signals with equal power and a phase difference of 0 degree, that is, a first radio frequency signal, a second radio frequency signal, a third radio frequency signal, a fourth radio frequency signal, a fifth radio frequency signal, and a sixth radio frequency signal, and simultaneously send the first radio frequency signal to the first radiation antenna, send the second radio frequency signal to the second radiation antenna, send the third radio frequency signal to the third radiation antenna, send the fourth radio frequency signal to the fourth radiation antenna, send the fifth radio frequency signal to the fifth radiation antenna, and send the sixth radio frequency signal to the sixth radiation antenna.
The power phase processing is carried out on the radio frequency signals through the power balancing module, so that the first radio frequency signal, the second radio frequency signal, the third radio frequency signal, the fourth radio frequency signal, the fifth radio frequency signal and the sixth radio frequency signal are equal in frequency, equal in amplitude and same in phase, and six radio frequency signals with consistent amplitude and phase and consistent coverage range are formed in space.
Further, the power equalization module comprises a radio frequency power equalizer, a first feeder, a second feeder, a third feeder, a fourth feeder, a fifth feeder and a sixth feeder;
the radio frequency power equalizer is connected with the first path of radiating antenna through the first feeder line, connected with the second path of radiating antenna through the second feeder line, connected with the third path of radiating antenna through the third feeder line, connected with the fourth path of radiating antenna through the fourth feeder line, connected with the fifth path of radiating antenna through the fifth feeder line, and connected with the sixth path of radiating antenna through the sixth feeder line;
the radio frequency power equalizer is used for adjusting the power and the phase of the first radio frequency signal, the second radio frequency signal, the third radio frequency signal, the fourth radio frequency signal, the fifth radio frequency signal and the sixth radio frequency signal according to the phase difference of the first radio frequency signal, the second radio frequency signal, the third radio frequency signal, the fourth radio frequency signal, the fifth radio frequency signal and the sixth radio frequency signal and the amplitude difference of the first feeder line, the second feeder line, the third feeder line, the fourth feeder line, the fifth feeder line and the sixth feeder line, so that the first radio frequency signal is transmitted to the first path of radiating antenna through the first feeder line, the second radio frequency signal is transmitted to the second path of radiating antenna through the second feeder line, the third radio frequency signal is transmitted to the third path of radiating antenna through the third feeder line, and the fourth radio frequency signal is transmitted to the fourth path of radiating antenna through the fourth feeder line, When the fifth radio frequency signal is transmitted to the fifth radiation antenna through the fifth feeder line and the sixth radio frequency signal is transmitted to the sixth radiation antenna through the sixth feeder line, the phases and amplitudes of the first radio frequency signal, the second radio frequency signal, the third radio frequency signal, the fourth radio frequency signal, the fifth radio frequency signal and the sixth radio frequency signal are the same;
the first feeder line is used for receiving a first radio frequency signal and sending the first radio frequency signal to the first path of radiation antenna; the second feeder line is used for receiving a second radio frequency signal and sending the second radio frequency signal to the second path of radiation antenna; the third feeder line is used for receiving the third radio frequency signal and sending the third radio frequency signal to the third path of radiation antenna; the fourth feeder line is used for receiving a fourth radio frequency signal and sending the fourth radio frequency signal to the fourth path of radiation antenna; the fifth feeder line is used for receiving a fifth radio frequency signal and sending the fifth radio frequency signal to the fifth path of radiation antenna; and the sixth feeder line is used for receiving the sixth radio frequency signal and sending the sixth radio frequency signal to the sixth radiation antenna.
The radio frequency power equalizer sends the first radio frequency signal, the second radio frequency signal, the third radio frequency signal, the fourth radio frequency signal, the fifth radio frequency signal and the sixth radio frequency signal which have the same amplitude and the same frequency and the phase difference of 0 degree to the symmetrical six-path broadband antenna module through six equal-length feeders, so that the transmission paths of the first radio frequency signal, the second radio frequency signal, the third radio frequency signal, the fourth radio frequency signal, the fifth radio frequency signal and the sixth radio frequency signal are ensured to be equal, and when the first radio frequency signal, the second radio frequency signal, the third radio frequency signal, the fourth radio frequency signal, the fifth radio frequency signal and the sixth radio frequency signal reach the symmetrical six-path broadband antenna module, the phase difference of the first radio frequency signal, the second radio frequency signal, the third radio frequency signal, the fourth radio frequency signal, the fifth radio.
Further, the symmetrical six-path broadband antenna module is a symmetrical six-path broadband microstrip array antenna module.
And the back radiation is reduced, and the coverage of six radiation signals is ensured to be balanced and consistent.
A mimo power equalization method using the 4T6R symmetric antenna system, comprising the steps of:
s1, the symmetrical four-path transmission and power equalization module transmits and equalizes four paths of radio frequency signals with equal amplitude, equal frequency and same phase, distributes power to the four paths of radio frequency signals to generate six paths of radio frequency signals with equal power, namely a first radio frequency signal, a second radio frequency signal, a third radio frequency signal, a fourth radio frequency signal, a fifth radio frequency signal and a sixth radio frequency signal, and sends the first radio frequency signal, the second radio frequency signal, the third radio frequency signal, the fourth radio frequency signal, the fifth radio frequency signal and the sixth radio frequency signal to the symmetrical six paths of broadband antenna module;
s2, the symmetric six-path broadband antenna module receives the first radio frequency signal and transmits a first radiation signal through the first radiation antenna, receives the second radio frequency signal and transmits a second radiation signal through the second radiation antenna, receives the third radio frequency signal and transmits a third radiation signal through the third radiation antenna, receives the fourth radio frequency signal and transmits a fourth radiation signal through the fourth radiation antenna, receives the fifth radio frequency signal and transmits a fifth radiation signal through the fifth radiation antenna, and receives the sixth radio frequency signal and transmits a sixth radiation signal through the sixth radiation antenna.
According to the method, six paths of radio frequency signals which are processed and sent by a plurality of power balancing modules and have the same amplitude and the same frequency and the phase difference of 0 degree are received through the four symmetrical paths of broadband microstrip array antennas, and then radiation signals are sent, so that six 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 six paths of radiation signals which have the same amplitude and the same phase when moving in a signal coverage range, and a good receiving effect is achieved.
Further, step S1 includes the following steps:
s11 and 4T6R small base stations generate four paths of radio frequency signals with equal amplitude and equal frequency, and send the four paths of radio frequency signals to a power balancing module;
s12, the power equalization module performs power distribution on the received four radio frequency signals to generate six radio frequency signals with equal power and 0 degree phase difference, that is, a first radio frequency signal, a second radio frequency signal, a third radio frequency signal, a fourth radio frequency signal, a fifth radio frequency signal, and a sixth radio frequency signal, and simultaneously sends the first radio frequency signal to the first radiation antenna, the second radio frequency signal to the second radiation antenna, the third radio frequency signal to the third radiation antenna, the fourth radio frequency signal to the fourth radiation antenna, the fifth radio frequency signal to the fifth radiation antenna, and the sixth radio frequency signal to the sixth radiation antenna.
The power phase processing is carried out on the radio frequency signals through the power balancing module, so that the first radio frequency signal, the second radio frequency signal, the third radio frequency signal, the fourth radio frequency signal, the fifth radio frequency signal and the sixth radio frequency signal are equal in frequency, equal in amplitude and same in phase, and six radio frequency signals with consistent amplitude and phase and consistent coverage range are formed in space.
Further, step S12 includes the steps of:
s121, adjusting the power and the phase of the first, second, third, fifth and sixth radio-frequency signals according to the phase difference of the first, second, third, fourth, fifth and sixth radio-frequency signals and the amplitude difference of the first, second, third, fourth, fifth and sixth feeders, so that the first radio-frequency signal is transmitted to the first radiating antenna through the first feeder, the second radio-frequency signal is transmitted to the second radiating antenna through the second feeder, the third radio-frequency signal is transmitted to the third radiating antenna through the third feeder, and the fourth radio-frequency signal is transmitted to the fourth radiating antenna through the fourth feeder, When the fifth radio frequency signal is transmitted to the fifth radiation antenna through the fifth feeder line and the sixth radio frequency signal is transmitted to the sixth radiation antenna through the sixth feeder line, the phases and amplitudes of the first radio frequency signal, the second radio frequency signal, the third radio frequency signal, the fourth radio frequency signal, the fifth radio frequency signal and the sixth radio frequency signal are the same;
s122, send the first radio frequency signal to the first radiating antenna through the first feeder, send the second radio frequency signal to the second radiating antenna through the second feeder, send the third radio frequency signal to the third radiating antenna through the third feeder, send the fourth radio frequency signal to the fourth radiating antenna through the fourth feeder, send the fifth radio frequency signal to the fifth radiating antenna through the fifth feeder, and send the sixth radio frequency signal to the sixth radiating antenna through the sixth feeder.
The radio frequency power equalizer simultaneously sends the first radio frequency signal, the second radio frequency signal, the third radio frequency signal, the fourth radio frequency signal, the fifth radio frequency signal and the sixth radio frequency signal which have the same amplitude and the same frequency and have the phase difference of 0 degree to the symmetrical six-path broadband antenna module through six equal-length feeders, so that the transmission paths of the first radio frequency signal, the second radio frequency signal, the third radio frequency signal, the fourth radio frequency signal, the fifth radio frequency signal and the sixth radio frequency signal are ensured to be equal, and when the first radio frequency signal, the second radio frequency signal, the third radio frequency signal, the fourth radio frequency signal, the fifth radio frequency signal and the sixth radio frequency signal reach the symmetrical six-path broadband antenna module, the phase difference of the first radio frequency signal, the second radio frequency signal, the third radio frequency signal, the fourth radio frequency signal, the fifth.
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 4T6R small base station through a cable, the 4T6R small base station transmits radio frequency signals to a radio frequency power equalizer through four radio frequency transmission lines, the radio frequency power equalizer is connected with six 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 six radiation antennas according to certain proportion, the radio frequency power equalizer is also connected with a next radio frequency power equalizer through other four radio frequency transmission lines, the radio frequency power equalizer and the six radiation antennas of 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 eight 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. six 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 through a symmetrical four-path broadband microstrip array antenna, and then radiation signals are sent, so that six paths of radiation signals with consistent amplitude and phase and coverage range are formed in space, the six paths of radiation signals with equal amplitude and equal phase can be received when a mobile terminal moves in a signal coverage range, a good receiving effect is achieved, the gain range of the 4T6R small base station six paths of radiation signals in an indoor space is consistent, and a good indoor coverage effect is achieved;
2. the symmetrical six-path broadband antenna module is a symmetrical six-path broadband microstrip array antenna module, so that the back radiation is reduced, and the coverage range of six paths of radiation signals is ensured to be consistent;
3. the six-path signal transmission can be realized by only adopting one symmetrical six-path broadband antenna module, the structure is simple and light, and the indoor arrangement and installation are facilitated.
Drawings
Fig. 1 is a schematic structural diagram of a 4T6R symmetric antenna system according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a symmetric four-path transmission and power equalization module in a 4T6R symmetric antenna system according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a power equalization module in a 4T6R symmetric antenna system according to an embodiment of the present invention;
fig. 4 is a flowchart of a mimo power equalization method using a 4T6R symmetric antenna system according to an embodiment of the present invention;
fig. 5 is a flowchart illustrating operations of six transmission and power equalization modules in a mimo power equalization method using a 4T6R symmetric antenna system according to an embodiment of the present invention;
fig. 6 is a flowchart illustrating operations of a power balancing module in a mimo power balancing method using a 4T6R symmetric antenna system according to an embodiment of the present invention.
Description of reference numerals:
1. a symmetrical four-path transmission and power balancing module; 11. 4T6R small base station; 12. a power balancing module; 121. a radio frequency power equalizer; 122. a first feed line; 123. a second feed line; 124. a third feeder line; 125. a fourth feed line; 126. a fifth feeder line; 127. a sixth feeder line;
2. a symmetrical six-path broadband antenna module; 21. a first path of radiating antenna; 22. a second path of radiation antenna; 23. a third path of radiating antenna; 24. a fourth path of radiation antenna; 25. a fifth path of radiation antenna; 26. and a sixth radiation antenna.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
Example (b):
as shown in fig. 1, a 4T6R symmetric antenna system includes a symmetric four-way transmission and power equalization module 1 and a symmetric six-way broadband antenna module 2, where the symmetric six-way broadband antenna module 2 includes a first radiation antenna 21, a second radiation antenna 22, a third radiation antenna 23, a fourth radiation antenna 24, a fifth radiation antenna 25 and a sixth radiation antenna 26 that are the same in size and are parallel to each other in position, and the first radiation antenna 21, the second radiation antenna 22, the third radiation antenna 23, the fourth radiation antenna 24, the fifth radiation antenna 25 and the sixth radiation antenna 26 are respectively connected to the symmetric four-way transmission and power equalization module 1; wherein:
the symmetrical four-path transmission and power equalization module 1 is used for transmitting four paths of radio-frequency signals with equal amplitude, equal frequency and same phase, performing power distribution on the four paths of radio-frequency signals to generate six paths of radio-frequency signals with equal power, namely a first radio-frequency signal, a second radio-frequency signal, a third radio-frequency signal, a fourth radio-frequency signal, a fifth radio-frequency signal and a sixth radio-frequency signal, and sending the first radio-frequency signal, the second radio-frequency signal, the third radio-frequency signal, the fourth radio-frequency signal, the fifth radio-frequency signal and the sixth radio-frequency signal to the symmetrical six paths of broadband antenna modules 2;
the symmetric six-path broadband antenna module 2 is configured to receive the first radio frequency signal and send a first radiation signal through the first path of radiation antenna 21, receive the second radio frequency signal and send a second radiation signal through the second path of radiation antenna 22, receive the third radio frequency signal and send a third radiation signal through the third path of radiation antenna 23, receive the fourth radio frequency signal and send a fourth radiation signal through the fourth path of radiation antenna 24, receive the fifth radio frequency signal and send a fifth radiation signal through the fifth path of radiation antenna 25, receive the sixth radio frequency signal through the sixth path of radiation antenna 26, and send a sixth radiation signal.
Since the first radio frequency signal, the second radio frequency signal, the third radio frequency signal, the fourth radio frequency signal, the fifth radio frequency signal and the sixth radio frequency signal have equal amplitude and equal frequency and the phase difference is 0 degree, and the first radiation antenna 21, the second radiation antenna 22, the third radiation antenna 23, the fourth radiation antenna 24, the fifth radiation antenna 25 and the sixth radiation antenna 26 are in phase and parallel, electric field vectors of the first radio frequency signal, the second radio frequency signal, the third radio frequency signal, the fourth radio frequency signal, the fifth radio frequency signal and the sixth radio frequency signal are in parallel with each other in space and have equal amplitude effect, so that the first radiation signal, the second radiation signal, the third radiation signal, the fourth radiation signal, the fifth radiation signal and the sixth radiation signal have correlation, and since the first radiation antenna 21, the second radiation antenna 22 and the third radiation antenna 23 have equal amplitude, The sizes and the structural processes of the fourth radiation antenna 24, the fifth radiation antenna 25 and the sixth radiation antenna 26 are completely the same and are located on the same symmetrical six broadband antennas, so that the radiation ranges of the first radiation signal, the second radiation signal, the third radiation signal, the fourth radiation signal, the fifth radiation signal and the sixth radiation signal are consistent in space, in the process that the indoor mobile terminal moves in the signal coverage range, the six related 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.
The symmetrical six-path broadband antenna module 2 transmits six radio frequency signals which meet the frequency required by the MIMO application according to the specific requirement of the indoor mobile communication system for applying the MIMO, wherein the six radio frequency signals are respectively a first radio frequency signal, a second radio frequency signal, a third radio frequency signal, a fourth radio frequency signal, a fifth radio frequency signal and a sixth radio frequency signal, wherein the first radio frequency signal, the second radio frequency signal, the third radio frequency signal, the fourth radio frequency signal, the fifth radio frequency signal and the sixth radio frequency signal have the same amplitude and frequency, and the phase difference is 0 degree, due to the differences in the specific indoor communication systems, the frequencies required for applying MIMO are also different, for example, if the frequencies required for applying MIMO in LTE are 2500-, the frequencies of the first rf signal, the second rf signal, the third rf signal, the fourth rf signal, the fifth rf signal and the sixth rf signal transmitted by the symmetric six-path wideband antenna module 2 are 2500-. The system receives six paths of radio frequency signals which are processed and sent by the power equalization modules 12 and have equal amplitude and equal frequency and phase difference of 0 degree through the symmetrical four paths of broadband microstrip array antennas and then sends radiation signals, so that six paths of radiation signals with consistent amplitude and phase and coverage range are formed in space, the mobile terminal can receive the six paths of radiation signals with equal amplitude and equal phase when moving in a signal coverage range, and a good receiving effect is achieved.
In one embodiment, the symmetric four-way transmission and power equalization module 1 includes a 4T6R small base station 11 and a power equalization module 12, the 4T6R small base station 11 is connected to the power equalization module 12, and the power equalization module 12 is connected to the first radiation antenna 21, the second radiation antenna 22, the third radiation antenna 23, the fourth radiation antenna 24, the fifth radiation antenna 25 and the sixth radiation antenna 26, respectively; wherein:
the 4T6R small cell 11 is configured to generate four radio frequency signals with equal amplitude and equal frequency, and send the four radio frequency signals to the power balancing module; the 4T6R small cell 11 demodulates the received baseband optical signal, thereby generating six radio frequency signals, which are equal-amplitude and equal-frequency first, second, third, fourth, fifth and sixth radio frequency signals, conforming to the frequency required by MIMO application, and then sends the equal-amplitude and equal-frequency first, second, third, fourth, fifth and sixth radio frequency signals to the power equalization module 12.
The power equalizing module 12 is configured to perform power distribution on the received four radio frequency signals to generate six radio frequency signals with equal power and a phase difference of 0 degree, that is, a first radio frequency signal, a second radio frequency signal, a third radio frequency signal, a fourth radio frequency signal, a fifth radio frequency signal, and a sixth radio frequency signal, and simultaneously send the first radio frequency signal to the first radiating antenna 21, send the second radio frequency signal to the second radiating antenna 22, send the third radio frequency signal to the third radiating antenna 23, send the fourth radio frequency signal to the fourth radiating antenna 24, send the fifth radio frequency signal to the fifth radiating antenna 25, and send the sixth radio frequency signal to the sixth radiating antenna 26. The power equalization module 1212 performs power phase processing on the radio frequency signals, so that the first radio frequency signal, the second radio frequency signal, the third radio frequency signal, the fourth radio frequency signal, the fifth radio frequency signal, and the sixth radio frequency signal have equal frequency, equal amplitude, and the same phase, and six radio frequency signals with the same amplitude and phase and the same coverage range are formed in a space.
In one embodiment, the power equalization module 12 includes a radio frequency power equalizer 121, a first feeder 122, a second feeder 123, a third feeder 124, a fourth feeder 125, a fifth feeder 126, and a sixth feeder 127;
the radio frequency power equalizer 121 is connected to the first radiating antenna 21 through the first feeder 122, connected to the second radiating antenna 22 through the second feeder 123, connected to the third radiating antenna 23 through the third feeder 124, connected to the fourth radiating antenna 24 through the fourth feeder 125, connected to the fifth radiating antenna 25 through the fifth feeder 126, and connected to the sixth radiating antenna 26 through the sixth feeder 127;
the rf power equalizer 121 is configured to adjust the power and phase of the first, second, third, fourth, fifth, and sixth rf signals according to the phase difference between the first, second, third, and sixth rf signals and the amplitude difference between the first, second, third, and fourth feeding lines 122, 123, 124, 125, 126, and 127, so that the first rf signal is transmitted to the first radiating antenna 2121 through the first feeding line 122, the second rf signal is transmitted to the second radiating antenna 22 through the second feeding line 123, the third rf signal is transmitted to the third radiating antenna 23 through the third feeding line 124, and the fourth rf signal is transmitted to the fourth radiating antenna 24 through the fourth feeding line 125, When the fifth radio frequency signal is transmitted to the fifth radiation antenna 25 through the fifth feeder line 126 and the sixth radio frequency signal is transmitted to the sixth radiation antenna 26 through the sixth feeder line 127, the phases and amplitudes of the first radio frequency signal, the second radio frequency signal, the third radio frequency signal, the fourth radio frequency signal, the fifth radio frequency signal and the sixth radio frequency signal are the same;
the first feeder line 122 is configured to receive the first radio frequency signal and send the first radio frequency signal to the first radiation antenna 21, the second feeder line 123 is configured to receive the second radio frequency signal and send the second radio frequency signal to the second radiation antenna 22, the third feeder line 124 is configured to receive the third radio frequency signal and send the third radio frequency signal to the third radiation antenna 23, the fourth feeder line 125 is configured to receive the fourth radio frequency signal and send the fourth radio frequency signal to the fourth radiation antenna 24, the fifth feeder line 126 is configured to receive the fifth radio frequency signal and send the fifth radio frequency signal to the fifth radiation antenna 25, and the sixth feeder line 127 is configured to receive the sixth radio frequency signal and send the sixth radio frequency signal to the sixth radiation antenna 26.
The rf power equalizer 121 sends the first rf signal, the second rf signal, the third rf signal, the fourth rf signal, the fifth rf signal, and the sixth rf signal with equal amplitude and equal frequency and a phase difference of 0 degree to the symmetrical six-path broadband antenna module 2 through six equal-length feeders, so as to ensure that transmission paths of the first rf signal, the second rf signal, the third rf signal, the fourth rf signal, the fifth rf signal, and the sixth rf signal are equal, and when reaching the symmetrical six-path broadband antenna module 2, the phase difference of the first rf signal, the second rf signal, the third rf signal, the fourth rf signal, the fifth rf signal, and the sixth rf signal is still 0 degree.
In one embodiment, the symmetric six-way broadband antenna module 2 is a symmetric six-way broadband microstrip array antenna module.
The back radiation is reduced, the coverage of six paths of radiation signals is ensured to be balanced and consistent, and the mutual interference is reduced.
As shown in fig. 4, a mimo power equalization method using the 4T6R symmetric antenna system includes the following steps:
s1, the symmetrical four-channel transmission and power equalization module 1 transmits four channels of rf signals with equal amplitude, equal frequency and same phase, performs power distribution on the four channels of rf signals to generate six channels of rf signals with equal power, that is, a first rf signal, a second rf signal, a third rf signal, a fourth rf signal, a fifth rf signal and a sixth rf signal, and sends the first rf signal, the second rf signal, the third rf signal, the fourth rf signal, the fifth rf signal and the sixth rf signal to the symmetrical six channels of wideband antenna module 2;
s2, the symmetric six-path broadband antenna module 2 receives the first radio frequency signal and transmits a first radiation signal through the first radiation antenna 21, receives the second radio frequency signal and transmits a second radiation signal through the second radiation antenna 22, receives the third radio frequency signal and transmits a third radiation signal through the third radiation antenna 23, receives the fourth radio frequency signal and transmits a fourth radiation signal through the fourth radiation antenna 24, receives the fifth radio frequency signal and transmits a fifth radiation signal through the fifth radiation antenna 25, and receives the sixth radio frequency signal and transmits a sixth radiation signal through the sixth radiation antenna 26.
Since the first radio frequency signal, the second radio frequency signal, the third radio frequency signal, the fourth radio frequency signal, the fifth radio frequency signal and the sixth radio frequency signal have equal amplitude and equal frequency and the phase difference is 0 degree, and the first radiation antenna 21, the second radiation antenna 22, the third radiation antenna 23, the fourth radiation antenna 24, the fifth radiation antenna 25 and the sixth radiation antenna 26 are in phase and parallel, electric field vectors of the first radio frequency signal, the second radio frequency signal, the third radio frequency signal, the fourth radio frequency signal, the fifth radio frequency signal and the sixth radio frequency signal are in parallel with each other in space and have equal amplitude effect, so that the first radiation signal, the second radiation signal, the third radiation signal, the fourth radiation signal, the fifth radiation signal and the sixth radiation signal have correlation, and since the first radiation antenna 21, the second radiation antenna 22 and the third radiation antenna 23 have equal amplitude, The sizes and the structural processes of the fourth radiation antenna 24, the fifth radiation antenna 25 and the sixth radiation antenna 26 are completely the same and are located on the same symmetrical six broadband antennas, so that the radiation ranges of the first radiation signal, the second radiation signal, the third radiation signal, the fourth radiation signal, the fifth radiation signal and the sixth radiation signal are consistent in space, in the process that the indoor mobile terminal moves in the signal coverage range, the six related 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.
The symmetrical six-path broadband antenna module 2 transmits six radio frequency signals which meet the frequency required by the MIMO application according to the specific requirement of the indoor mobile communication system for applying the MIMO, wherein the six radio frequency signals are respectively a first radio frequency signal, a second radio frequency signal, a third radio frequency signal, a fourth radio frequency signal, a fifth radio frequency signal and a sixth radio frequency signal, wherein the first radio frequency signal, the second radio frequency signal, the third radio frequency signal, the fourth radio frequency signal, the fifth radio frequency signal and the sixth radio frequency signal have the same amplitude and frequency, and the phase difference is 0 degree, due to the differences in the specific indoor communication systems, the frequencies required for applying MIMO are also different, for example, if the frequencies required for applying MIMO in LTE are 2500-, the frequencies of the first rf signal, the second rf signal, the third rf signal, the fourth rf signal, the fifth rf signal and the sixth rf signal transmitted by the symmetric six-path wideband antenna module 2 are 2500-. The system receives six paths of radio frequency signals which are processed and sent by the power equalization modules 12 and have equal amplitude and equal frequency and phase difference of 0 degree through the symmetrical four paths of broadband microstrip array antennas and then sends radiation signals, so that six paths of radiation signals with consistent amplitude and phase and coverage range are formed in space, the mobile terminal can receive the six paths of radiation signals with equal amplitude and equal phase when moving in a signal coverage range, and a good receiving effect is achieved.
In one embodiment, step S1 includes the following steps:
s11, the 4T6R small base station 11 generates four paths of radio frequency signals with equal amplitude and equal frequency, and sends the four paths of radio frequency signals to the power balancing module 12;
s12, the power equalizing module 12 performs power distribution on the received four radio frequency signals to generate six radio frequency signals with equal power and a phase difference of 0 degree, that is, a first radio frequency signal, a second radio frequency signal, a third radio frequency signal, a fourth radio frequency signal, a fifth radio frequency signal, and a sixth radio frequency signal, and simultaneously sends the first radio frequency signal to the first radiating antenna 21, the second radio frequency signal to the second radiating antenna 22, the third radio frequency signal to the third radiating antenna 23, the fourth radio frequency signal to the fourth radiating antenna 24, the fifth radio frequency signal to the fifth radiating antenna 25, and the sixth radio frequency signal to the sixth radiating antenna 26.
The power equalization module 12 is configured to perform power distribution and equalization processing on the first radio frequency signal, the second radio frequency signal, the third radio frequency signal, the fourth radio frequency signal, the fifth radio frequency signal, and/or the sixth radio frequency signal, so that a phase difference between the first radio frequency signal, the second radio frequency signal, the third radio frequency signal, the fourth radio frequency signal, the fifth radio frequency signal, and the sixth radio frequency signal is 0 degree, and sends the first radio frequency signal to the first radiation antenna 21, sends the second radio frequency signal to the second radiation antenna 22, sends the third radio frequency signal to the third radiation antenna 23, sends the fourth radio frequency signal to the fourth radiation antenna 24, sends the fifth radio frequency signal to the fifth radiation antenna 25, and sends the sixth radio frequency signal to the sixth radiation antenna 26. The power equalization module 12 performs phase processing on the radio frequency signals, so that the first radio frequency signal, the second radio frequency signal, the third radio frequency signal, the fourth radio frequency signal, the fifth radio frequency signal and the sixth radio frequency signal have equal frequency, equal amplitude and same phase, and six radio frequency signals with consistent amplitude and phase and consistent coverage range are formed in space.
In one embodiment, step S12 includes the following steps:
s121, adjusting the power and phase of the first, second, third, fourth, fifth and sixth radio frequency signals according to the phase difference of the first, second, third, fourth, fifth and sixth radio frequency signals and the amplitude difference of the first, second, third, fourth, fifth and sixth feeders 122, 123, 124, 125, 126 and 127, so that the first radio frequency signal is transmitted to the first radiating antenna 21 through the first feeder 122, the second radio frequency signal is transmitted to the second radiating antenna 22 through the second feeder 123, the third radio frequency signal is transmitted to the third radiating antenna 23 through the third feeder 124, and the fourth radio frequency signal is transmitted to the fourth radiating antenna 24 through the fourth feeder 125, When the fifth radio frequency signal is transmitted to the fifth radiation antenna 25 through the fifth feeder line 126 and the sixth radio frequency signal is transmitted to the sixth radiation antenna 26 through the sixth feeder line 127, the phases and amplitudes of the first radio frequency signal, the second radio frequency signal, the third radio frequency signal, the fourth radio frequency signal, the fifth radio frequency signal and the sixth radio frequency signal are the same;
s122, sending the first radio frequency signal to the first radiation antenna 21 through the first feeder 122, sending the second radio frequency signal to the second radiation antenna 22 through the second feeder 123, sending the third radio frequency signal to the third radiation antenna 23 through the third feeder 124, sending the fourth radio frequency signal to the fourth radiation antenna 24 through the fourth feeder 125, sending the fifth radio frequency signal to the fifth radiation antenna 25 through the fifth feeder 126, and sending the sixth radio frequency signal to the sixth radiation antenna 26 through the sixth feeder 127.
The rf power equalizer 121 sends the first rf signal, the second rf signal, the third rf signal, the fourth rf signal, the fifth rf signal, and the sixth rf signal with equal amplitude and equal frequency and a phase difference of 0 degree to the symmetrical six-path broadband antenna module 2 through six equal-length feeders, so as to ensure that transmission paths of the first rf signal, the second rf signal, the third rf signal, the fourth rf signal, the fifth rf signal, and the sixth rf signal are equal, and when reaching the symmetrical six-path broadband antenna module 2, the phase difference of the first rf signal, the second rf signal, the third rf signal, the fourth rf signal, the fifth rf signal, and the sixth rf signal is still 0 degree.
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. A4T 6R symmetric antenna system is characterized by comprising a symmetric four-path transmission and power balancing module and a symmetric six-path broadband antenna module, wherein the symmetric six-path broadband antenna module comprises a first path of radiating antenna, a second path of radiating antenna, a third path of radiating antenna, a fourth path of radiating antenna, a fifth path of radiating antenna and a sixth path of radiating antenna which are identical in size and parallel to each other in position, and the first path of radiating antenna, the second path of radiating antenna, the third path of radiating antenna, the fourth path of radiating antenna, the fifth path of radiating antenna and the sixth path of radiating antenna are respectively connected with the symmetric four-path transmission and power balancing module; wherein:
the symmetrical four-path transmission and power equalization module is used for transmitting and equalizing four paths of radio-frequency signals with equal amplitude, equal frequency and same phase, distributing the power of the four paths of radio-frequency signals to generate six paths of radio-frequency signals with equal power, namely a first radio-frequency signal, a second radio-frequency signal, a third radio-frequency signal, a fourth radio-frequency signal, a fifth radio-frequency signal and a sixth radio-frequency signal, and sending the first radio-frequency signal, the second radio-frequency signal, the third radio-frequency signal, the fourth radio-frequency signal, the fifth radio-frequency signal and the sixth radio-frequency signal to the symmetrical six paths of broadband antenna modules;
the symmetrical four-path transmission and power balancing module comprises a 4T6R small base station and a power balancing module, wherein the 4T6R small base station is connected with the power balancing module, and the power balancing module is respectively connected with the first path of radiation antenna, the second path of radiation antenna, the third path of radiation antenna, the fourth path of radiation antenna, the fifth path of radiation antenna and the sixth path of radiation antenna; wherein:
the 4T6R small base station is used for generating four paths of radio frequency signals with equal amplitude and equal frequency and sending the four paths of radio frequency signals to the power balancing module;
a power equalization module, configured to perform power distribution on the received four radio frequency signals to generate six radio frequency signals with equal power and a phase difference of 0 degree, that is, a first radio frequency signal, a second radio frequency signal, a third radio frequency signal, a fourth radio frequency signal, a fifth radio frequency signal, and a sixth radio frequency signal, and simultaneously send the first radio frequency signal to the first radiation antenna, send the second radio frequency signal to the second radiation antenna, send the third radio frequency signal to the third radiation antenna, send the fourth radio frequency signal to the fourth radiation antenna, send the fifth radio frequency signal to the fifth radiation antenna, and send the sixth radio frequency signal to the sixth radiation antenna;
the symmetrical six-path broadband antenna module is used for receiving the first radio-frequency signal and sending a first radiation signal through the first path radiation antenna, receiving the second radio-frequency signal and sending a second radiation signal through the second path radiation antenna, receiving the third radio-frequency signal and sending a third radiation signal through the third path radiation antenna, receiving the fourth radio-frequency signal and sending a fourth radiation signal through the fourth path radiation antenna, receiving the fifth radio-frequency signal and sending a fifth radiation signal through the fifth path radiation antenna, and receiving the sixth radio-frequency signal and sending a sixth radiation signal through the sixth path radiation antenna.
2. The 4T6R symmetric antenna system according to claim 1, wherein the power equalizing module includes a radio frequency power equalizer, a first feed line, a second feed line, a third feed line, a fourth feed line, a fifth feed line, and a sixth feed line;
the radio frequency power equalizer is connected with the first path of radiating antenna through the first feeder line, connected with the second path of radiating antenna through the second feeder line, connected with the third path of radiating antenna through the third feeder line, connected with the fourth path of radiating antenna through the fourth feeder line, connected with the fifth path of radiating antenna through the fifth feeder line, and connected with the sixth path of radiating antenna through the sixth feeder line;
a radio frequency power equalizer for adjusting the power and phase of the first, second, third, fifth and sixth radio frequency signals according to the phase difference between the first, second, third, fourth, fifth and sixth radio frequency signals and the amplitude difference between the first, second, third, fourth, fifth and sixth feeders, so that the first radio frequency signal is transmitted to the first radiating antenna through the first feeder, the second radio frequency signal is transmitted to the second radiating antenna through the second feeder, the third radio frequency signal is transmitted to the third radiating antenna through the third feeder, and the fourth radio frequency signal is transmitted to the fourth radiating antenna through the fourth feeder, When the fifth radio frequency signal is transmitted to the fifth radiation antenna through the fifth feeder line and the sixth radio frequency signal is transmitted to the sixth radiation antenna through the sixth feeder line, the phases and amplitudes of the first radio frequency signal, the second radio frequency signal, the third radio frequency signal, the fourth radio frequency signal, the fifth radio frequency signal and the sixth radio frequency signal are the same;
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; the second feeder line is used for receiving a second radio frequency signal and sending the second radio frequency signal to the second path of radiation antenna; the third feeder line is used for receiving the third radio frequency signal and sending the third radio frequency signal to the third path of radiation antenna; the fourth feeder line is used for receiving a fourth radio frequency signal and sending the fourth radio frequency signal to the fourth path of radiation antenna; the fifth feeder line is used for receiving a fifth radio frequency signal and sending the fifth radio frequency signal to the fifth path of radiation antenna; and the sixth feeder line is used for receiving the sixth radio frequency signal and sending the sixth radio frequency signal to the sixth radiation antenna.
3. The 4T6R symmetric antenna system according to claim 1 or 2, wherein the symmetric six-way broadband antenna module is a symmetric six-way broadband microstrip array antenna module.
4. A mimo power equalization method using the 4T6R symmetric antenna system of claim 1, comprising the steps of:
s1, the symmetrical four-path transmission and power equalization module transmits and equalizes four paths of radio frequency signals with equal amplitude, equal frequency and same phase, distributes power to the four paths of radio frequency signals to generate six paths of radio frequency signals with equal power, namely a first radio frequency signal, a second radio frequency signal, a third radio frequency signal, a fourth radio frequency signal, a fifth radio frequency signal and a sixth radio frequency signal, and sends the first radio frequency signal, the second radio frequency signal, the third radio frequency signal, the fourth radio frequency signal, the fifth radio frequency signal and the sixth radio frequency signal to the symmetrical six paths of broadband antenna module;
s2, the symmetric six-path broadband antenna module receives the first radio frequency signal and transmits a first radiation signal through the first radiation antenna, receives the second radio frequency signal and transmits a second radiation signal through the second radiation antenna, receives the third radio frequency signal and transmits a third radiation signal through the third radiation antenna, receives the fourth radio frequency signal and transmits a fourth radiation signal through the fourth radiation antenna, receives the fifth radio frequency signal and transmits a fifth radiation signal through the fifth radiation antenna, and receives the sixth radio frequency signal and transmits a sixth radiation signal through the sixth radiation antenna.
5. The mimo power equalizing method of claim 4, wherein step S1 comprises the steps of:
s11 and 4T6R small base stations generate four paths of radio frequency signals with equal amplitude and equal frequency, and send the four paths of radio frequency signals to a power balancing module;
s12, the power equalization module performs power distribution on the received four radio frequency signals to generate six radio frequency signals with equal power and 0 degree phase difference, that is, a first radio frequency signal, a second radio frequency signal, a third radio frequency signal, a fourth radio frequency signal, a fifth radio frequency signal, and a sixth radio frequency signal, and simultaneously sends the first radio frequency signal to the first radiation antenna, the second radio frequency signal to the second radiation antenna, the third radio frequency signal to the third radiation antenna, the fourth radio frequency signal to the fourth radiation antenna, the fifth radio frequency signal to the fifth radiation antenna, and the sixth radio frequency signal to the sixth radiation antenna.
6. The mimo power equalizing method of claim 5, wherein step S12 comprises the steps of:
s121, adjusting the power and the phase of the first radio frequency signal, the second radio frequency signal, the third radio frequency signal, the fourth radio frequency signal, the fifth radio frequency signal and the sixth radio frequency signal according to the phase difference of the first radio frequency signal, the second radio frequency signal, the third radio frequency signal, the fourth radio frequency signal, the fifth radio frequency signal and the sixth radio frequency signal and the amplitude difference of the first feeder line, the second feeder line, the third feeder line, the fourth feeder line, the fifth feeder line and the sixth feeder line, so that the first radio frequency signal is transmitted to the first path radiation antenna through the first feeder line, the second radio frequency signal is transmitted to the second path radiation antenna through the second feeder line, the third radio frequency signal is transmitted to the third path radiation three-way antenna through the third feeder line, the fourth radio frequency signal is transmitted to the fourth path radiation antenna through the fourth feeder line, and the fifth radio frequency signal is transmitted to the fifth path radiation antenna and the sixth radiation antenna through the fifth feeder line When the radio-frequency signal is transmitted to the sixth path of radiation antenna through the sixth feeder, the phases and amplitudes of the first radio-frequency signal, the second radio-frequency signal, the third radio-frequency signal, the fourth radio-frequency signal, the fifth radio-frequency signal and the sixth radio-frequency signal are the same;
s122, send the first radio frequency signal to the first radiating antenna through the first feeder, send the second radio frequency signal to the second radiating antenna through the second feeder, send the third radio frequency signal to the third radiating antenna through the third feeder, send the fourth radio frequency signal to the fourth radiating antenna through the fourth feeder, send the fifth radio frequency signal to the fifth radiating antenna through the fifth feeder, and send the sixth radio frequency signal to the sixth radiating antenna through the sixth feeder.
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