CN107146956A - Antenna element and MIMO antenna system using codebook - Google Patents
Antenna element and MIMO antenna system using codebook Download PDFInfo
- Publication number
- CN107146956A CN107146956A CN201610114175.4A CN201610114175A CN107146956A CN 107146956 A CN107146956 A CN 107146956A CN 201610114175 A CN201610114175 A CN 201610114175A CN 107146956 A CN107146956 A CN 107146956A
- Authority
- CN
- China
- Prior art keywords
- coupler
- compensation circuit
- connects
- signal
- antenna
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/29—Combinations of different interacting antenna units for giving a desired directional characteristic
- H01Q21/293—Combinations of different interacting antenna units for giving a desired directional characteristic one unit or more being an array of identical aerial elements
Abstract
A kind of MIMO antenna system using codebook includes first antenna unit and the second antenna element.The first antenna unit includes the first emitter, the first receiver, first annular device, the first compensation circuit, the second compensation circuit, first antenna and the first electronic switch；Second antenna element includes the second emitter, the second receiver, the second circulator, the 3rd compensation circuit, the 4th compensation circuit, the second antenna and the second electronic switch；Described first and the 3rd compensation circuit be used for reduced for leakage signal；Described second and the 4th compensation circuit be used for reduced for near-field interference signal.The MIMO antenna system using codebook can be realized to noise and effectively reduced.
Description
Technical field
The present invention relates to wireless communication field, more particularly to a kind of antenna element, a kind of MIMO antenna system using codebook of the application antenna element is further related to.
Background technology
The receive-transmit systems such as continuous wave radar, RFID carry out AF panel usually using single antenna, can so there are some shortcomings, as receiving circuit loss is larger, noise figure is high, coupler causes emission effciency low, it is necessary to cause cost increase etc. using the phase shifter and attenuator of high-res with combining for combiner.
Some existing double antenna technologies can be effectively improved above mentioned problem, but double antenna stills need to disturb this problem in face of closely barrier.The closely reflection echo of barrier about 30dB lower than transmitted wave, 20dB more than higher than remote reflected signal.Above mentioned problem can cause snr of received signal to reduce, that is, reduce the receiving sensitivity of receiver, shorten communication range, reduce the communication range of useful signal, and there may be intermodulation signal increase interference and power consumption.
The content of the invention
In consideration of it, being necessary to provide a kind of antenna element and the MIMO antenna system using codebook that multiple antennas is interfered with each other can be suppressed that can realize that signal reduces.
A kind of antenna element, including emitter, receiver, circulator, controller and antenna, the antenna element also include：
First coupler, the first end of first coupler connects the emitter by the first amplifier, and the second end of first coupler connects the first end of the circulator, and the second end of the circulator connects the antenna；
Second coupler, the first end of second coupler connects the 3rd end of the circulator, and the second end of second coupler connects the receiver；
First compensation circuit, the input of first compensation circuit connects the second end of the 3rd coupler, and the output end of first compensation circuit connects the 4th end of second coupler；
First electronic switch, the first end of first electronic switch connects the emitter, and the second end of first electronic switch is connected to the 3rd end of first coupler, and the three-terminal link of first electronic switch is in the input of first compensation circuit；
When the first end of the first electronic switch described in the three-terminal link of first electronic switch, the antenna element is correction mode, the emitter launches the first signal to first compensation circuit, the emitter is launched first end and second end of first signal successively through the circulator and transmitted to the antenna, first compensation circuit handles output first after first signal and reduces signal to second coupler, the first end of second coupler receives the secondary signal of the end of circulator the 3rd transmission, second coupler reduces described first and one the 3rd signal is exported after signal is coupled with the secondary signal to the receiver.
Preferably, first compensation circuit includes a phase-shift circuit and an attenuator circuit.
Preferably, the phase-shift circuit includes some power dividers and the second electronic switch, and second electronic switch is used for the phase place change for adjusting signal.
Preferably, the attenuator circuit includes some attenuators in parallel.
A kind of MIMO antenna system using codebook, including：
First antenna unit, the first antenna unit includes the first emitter, the first receiver, first annular device, the first compensation circuit, the second compensation circuit, first antenna and the first electronic switch；
Second antenna element, second antenna element includes the second emitter, the second receiver, the second circulator, the 3rd compensation circuit, the 4th compensation circuit, the second antenna and the second electronic switch；
The signal that first and second wherein described compensation circuit is used to receive for first receiver is reduced, and the signal that the 3rd and the 4th compensation circuit is used to receive for second receiver is reduced；First compensation circuit is used to be reduced for the leakage signal of the first annular device；The near-field interference signal that second compensation circuit is used for second antenna element received for the first antenna is reduced；3rd compensation circuit is used to be reduced for the leakage signal of second circulator；4th compensation circuit is used to be reduced for the near-field interference signal of the first antenna unit.
Preferably, the first antenna unit includes the first to the 3rd coupler, the first end of first coupler connects first emitter by the first amplifier, second end of first coupler connects the first end of the first annular device, and the second end of the first annular device connects the first antenna；The first end of second coupler connects the 3rd end of the first annular device, and the second end of second coupler connects first receiver；The input of first compensation circuit connects the second end of the 3rd coupler, and the output end of first compensation circuit connects the 4th end of second coupler, and the three-terminal link of the 3rd coupler is in the input of the 4th compensation circuit；The first end of first electronic switch connects first emitter, and the second end of first electronic switch is connected to the 3rd end of first coupler, and the three-terminal link of first electronic switch is in the input of first compensation circuit.
Preferably, second antenna element includes the 4th to the 6th coupler, the first end of 4th coupler connects second emitter by the second amplifier, second end of the 4th coupler connects the first end of second circulator, and the second end of second circulator connects second antenna；The first end of 5th coupler connects the 3rd end of second circulator, and the second end of the 5th coupler connects second receiver；The input of 3rd compensation circuit connects the second end of the 6th coupler, and the output end of the 3rd compensation circuit connects the 4th end of the 5th coupler, the input of the second compensation circuit described in the three-terminal link of the 6th coupler；The first end of second electronic switch connects second emitter, and the second end of second electronic switch is connected to the 3rd end of the 4th coupler, and the three-terminal link of second electronic switch is in the input of second compensation circuit.
Preferably, the MIMO antenna system using codebook also includes a system controller, the system controller connects first emitter, the second emitter, the first receiver, the second receiver, first to fourth compensation circuit respectively, and the system controller receives the signal to noise ratio of signal to adjust first to fourth compensation circuit by first and second described receiver of detection.
Preferably, the output signal of first and second compensation circuit is exported to a power combiner device, the power combiner device output first reduces signal to second coupler, and second coupler reduces described first after signal is coupled with the secondary signal of the first annular device output and exports one the 3rd signal to first receiver.
Preferably, first to fourth compensation circuit includes some attenuators in parallel.
By this design of electronic switch selection mode and efficient compensation circuit, MIMO antenna system using codebook of the present invention can be realized to be reduced to leakage signal and the effective of near-field interference signal.
Brief description of the drawings
Fig. 1 is inventive antenna unit and the circuit diagram of MIMO antenna system using codebook better embodiment.
Fig. 2 is the circuit diagram of another better embodiment of compensation circuit in Fig. 1.
Main element symbol description
| MIMO antenna system using codebook | 1000 |
| First antenna unit | 100 |
| Second antenna element | 200 |
| System controller | 300 |
| First emitter | 11 |
| First amplifier | 21 |
| Second amplifier | 22 |
| First coupler | 31 |
| Second coupler | 32 |
| 3rd coupler | 33 |
| First annular device | 41 |
| First electronic switch | 51 |
| First antenna | 61 |
| First compensation circuit | 71 |
| Second compensation circuit | 72 |
| First noise suppression circuit | 81 |
| First receiver | 91 |
| First power combiner device | 101 |
| Second emitter | 12 |
| 3rd amplifier | 23 |
| 4th amplifier | 24 |
| 4th coupler | 34 |
| 5th coupler | 35 |
| 6th coupler | 36 |
| Second circulator | 42 |
| Second electronic switch | 52 |
| Second antenna | 62 |
| 3rd compensation circuit | 73 |
| 4th compensation circuit | 74 |
| Second noise suppression circuit | 82 |
| Second receiver | 92 |
| 4th power combiner device | 102 |
Following embodiment will further illustrate the present invention with reference to above-mentioned accompanying drawing.
Embodiment
Fig. 1 is refer to, MIMO antenna system using codebook 1000 of the present invention includes first antenna unit 100, the second antenna element 200 and system controller 300.
The first antenna unit 100 includes the first emitter 11, the first amplifier 21, the second amplifier 22, the first coupler 31, the second coupler 32, the 3rd coupler 33, first annular device 41, the first electronic switch 51, first antenna 61, the first compensation circuit 71, the second compensation circuit 72, the first noise suppression circuit 81, the first receiver 91, the first power combiner device 101, resistance R1, resistance R2 and resistance R3.
The first end 1 of first emitter 11 connects the first input end 1 of first amplifier 21.The first end 1 of first emitter 11 is also connected with the first end 1 of first electronic switch 51.Second end 2 of first emitter 11 connects the first end 1 of the system controller 300.Second end 2 of first emitter 11 is also connected with the second input 2 of first amplifier 21.The output end 3 of first amplifier 21 connects the first end 1 of first coupler 31.Second end 2 of first coupler 31 connects the first end 1 of the first annular device 41.Second end 2 of the first annular device 41 connects the first antenna 61.3rd end 3 of the first annular device 41 connects the first end 1 of second coupler 32.Second end 2 of second coupler 32 connects first noise suppression circuit 81.
First noise suppression circuit 81 includes the first low noise amplifier 811, the first attenuator 812 and the first frequency demultiplier 813.Second end 2 of second coupler 32 connects the first end 1 of first low noise amplifier 811.Second end 2 of first low noise amplifier 811 connects the input 1 of first attenuator 812.The output end 2 of first attenuator 812 connects the first end 1 of first frequency demultiplier 813.Second end 2 of first frequency demultiplier 813 connects the first end 1 of first receiver 91.Second end 2 of first receiver 91 connects the second end 2 of the system controller 300.
3rd end 3 of first coupler 31 connects the second end 2 of first electronic switch 51.4th end 4 of first coupler 31 is grounded by the resistance R1.
3rd end 3 of second coupler 32 is grounded by resistance R2.4th end 4 of second coupler 32 is connected to the output end 2 of second amplifier 22.The input 1 of second amplifier 22 is connected to the output end 3 of the first power combiner device 101.The first input end 1 of the first power combiner device 101 is connected to first compensation circuit 71.Second input 2 of the first power combiner device 101 is connected to second compensation circuit 72.
First compensation circuit 71 includes the first phase shifter 711, the first power divider 712, the second attenuator 713, the 3rd attenuator 714, the second power combiner device 715 and one first digital analog converter 716.The first input end 1 of the first power combiner device 101 is connected to the output end 3 of the second power combiner device 715.The input 1 of first phase shifter 711 is connected to the second end 2 of the 3rd coupler 33.The output end 3 of first phase shifter 711 is connected to the input 1 of first power divider 712.First output end 2 of first power divider 712 is connected to the input 1 of second attenuator 713.Second output end 3 of first power divider 712 is connected to the input 1 of the 3rd attenuator 714.The output end 2 of second attenuator 713 is connected to the first input end 1 of the second power combiner device 715.The output end 2 of 3rd attenuator 714 is connected to the second input 2 of the second power combiner device 715.The input 1 of first digital analog converter 716 is connected to the 3rd end 3 of the system controller 300.The output end 2 of first digital analog converter 716 is connected to the input 2 of first phase shifter 711.
Second compensation circuit 72 includes the second phase shifter 721, the second power divider 722, the 4th attenuator 723, the 5th attenuator 724 and the 3rd power combiner device 725.The output end 2 of second phase shifter 721 is connected to the input 1 of second power divider 722.The output end 2 of second power divider 722 connects the input 1 of the 4th attenuator 723.The output end 3 of second power divider 722 connects the input 1 of the 5th attenuator 724.The output end 2 of 4th attenuator 723 is connected to the input 1 of the 3rd power combiner device 725.The output end 2 of 5th attenuator 724 is connected to the input 2 of the 3rd power combiner device 725.The output end 3 of the 3rd power combiner device 725 is connected to the input 2 of the first power combiner device 101.
The first end 1 of 3rd coupler 33 is connected to the 3rd end 3 of first electronic switch 51.4th end 4 of the 3rd coupler 33 is grounded by the resistance R3.
3rd end 3 of the system controller 300 is connected to second compensation circuit 72.
First emitter 11 is used for transmission signal.First amplifier 21 is used to amplify transmission signal.First receiver 91 is used to obtain the reception signal after AF panel.First low noise amplifier 811, which is used to amplify, receives signal.The first annular device 41 is the receiving and transmitting signal that three ports circulator clockwise is used to isolate in the first antenna unit 100.First coupler 31, the second coupler 32 are connected the input, output-resistor matching so that first annular device 41 with the different port of the first annular device 41.
It is contemplated that two kinds of interference signals of reduction:The first interference signal is leakage signal, and leakage signal reaches the second coupler from emitter, circulator, and then disturbs receiver；Second interference signal is near-field interference signal, near-field interference signal for emitter transmission signal after aerial radiation, reflected by neighbouring barrier and enter circulator, and then disturb receiver.
First compensation circuit 71 is used to reduce the leakage signal.
Second compensation circuit 72 is used to reduce inter-antenna interference signal.
Second antenna element 200 includes the second emitter 12, the 3rd amplifier 23, the 4th amplifier 24, the 4th coupler 34, the 5th coupler 35, the 6th coupler 36, the second circulator 42, the second electronic switch 52, the second antenna 62, the 3rd compensation circuit 73, the 4th compensation circuit 74, the second noise suppression circuit 82, the second receiver 92, the 4th power combiner device 102, resistance R4, resistance R5 and resistance R6.
The first end 1 of second emitter 12 connects the first input end 1 of the 3rd amplifier 23.The first end 1 of second emitter 12 is also connected with the first end 1 of second electronic switch 52.Second end 2 of second emitter 12 connects the 4th end 4 of the system controller 300.Second input 2 of second amplifier 22 is also attached to the 5th end 5 of the system controller 300.The output end 3 of second amplifier 22 connects the first end 1 of the 4th coupler 34.Second end 2 of the 4th coupler 34 connects the first end 1 of second circulator 42.Second end 2 of second circulator 42 connects second antenna 62.3rd end 3 of second circulator 42 connects the first end 1 of the 5th coupler 35.Second end 2 of the 5th coupler 35 connects second noise suppression circuit 82.
Second noise suppression circuit 82 includes the second low noise amplifier 821, the 6th attenuator 822 and the second frequency demultiplier 823.Second end 2 of the 5th coupler 35 connects the first end 1 of second low noise amplifier 821.Second end 2 of second low noise amplifier 821 connects the first end 1 of the 6th attenuator 822.Second end 2 of second low noise amplifier 821 connects the input 1 of the 6th attenuator 822.The output end 2 of 6th attenuator 822 connects the first end 1 of second frequency demultiplier 823.Second end 2 of second frequency demultiplier 823 connects the first end 1 of second receiver 92.Second end 2 of second receiver 92 connects the 5th end 5 of the system controller 300.
3rd end 3 of the 4th coupler 34 connects the second end 2 of second electronic switch 52.4th end 4 of the 4th coupler 34 is grounded by resistance R4.
3rd end of the 5th coupler 35 is grounded by resistance R5.4th end 4 of the 5th coupler 35 is connected to the output end 2 of the 4th amplifier 24.The input 1 of 4th amplifier 24 is connected to the output end 3 of the 4th power combiner device 102.The first input end 1 of the 4th power combiner device 102 is connected to the 3rd compensation circuit 73.Second input 2 of the 4th power combiner device 102 is connected to the 4th compensation circuit 74.
3rd compensation circuit 73 includes the 3rd phase shifter 731, the 3rd power divider 732, the 7th attenuator 733, the 8th attenuator 734, the 5th power combiner device 735 and the second digital analog converter 736.The first input end 1 of the 4th power combiner device 102 is connected to the output end 3 of the 5th power combiner device 735.The input 1 of 3rd phase shifter 731 is connected to the second end 2 of the 6th coupler 36.The output end 3 of 3rd phase shifter 731 is connected to the input 1 of the 3rd power divider 732.First output end 2 of the 3rd power divider 732 is connected to the input 1 of the 7th attenuator 733.Second output end 3 of the 3rd power divider 732 is connected to the input 1 of the 8th attenuator 734.The output end 2 of 7th attenuator 733 is connected to the first input end 1 of the 5th power combiner device 735.The output end 2 of 8th attenuator 734 is connected to the second input 2 of the 5th power combiner device 735.The input 1 of second digital analog converter 736 is connected to the 5th end 5 of the system controller 300.The output end 2 of second digital analog converter 736 is connected to the input 2 of the 3rd phase shifter 731.3rd end 3 of the 6th coupler 36 is connected to the input 1 of second phase shifter 721.4th end 4 of the 6th coupler 36 is grounded by the resistance R6.
4th compensation circuit 74 includes the 4th phase shifter 741, the 4th power divider 742, the 9th attenuator 743, the tenth attenuator 744 and the 6th power combiner device 745.The output end 2 of 4th phase shifter 741 is connected to the input 1 of the 4th power divider 742.The input 1 of 4th phase shifter 741 is connected to the 3rd end 3 of the 3rd coupler 33.The output end 2 of 4th power divider 742 is connected to the input 1 of the 9th attenuator 743.The output end 2 of 9th attenuator 743 is connected to the input 1 of the 6th power combiner device 745.The output end 3 of 4th power divider 742 is connected to the input 1 of the tenth attenuator 744.The output end 2 of tenth attenuator 744 is connected to the input 2 of the 6th power combiner device 745.The output end 3 of the 6th power combiner device 745 is connected to the input 1 of the 4th amplifier 24.
5th end 5 of the system controller 300 connects the 3rd compensation circuit 73 and the 4th compensation circuit 74 respectively.
Similarly, second emitter 12 is used for transmission signal.3rd amplifier 23 is used to amplify transmission signal.Second receiver 92 is used to obtain the reception signal after AF panel.Second low noise amplifier 821, which is used to amplify, receives signal.Second circulator 42 is the receiving and transmitting signal that three port circulators are used to isolate in second antenna element 200.4th coupler 34, the 5th coupler 35 are connected the input, output-resistor matching so that the second circulator 42 with the different port of second circulator 42.
3rd compensation circuit 73 is used to reduce the leakage signal.
4th compensation circuit 74 is used to reduce inter-antenna interference signal.
When 3rd end 3 of first electronic switch 51 connects the first end 1 of first electronic switch 51, the first antenna unit 100 is in first mode.
When 3rd end 3 of first electronic switch 51 connects the second end 2 of first electronic switch 51, the first antenna unit 100 is in second mode.
When 3rd end 3 of second electronic switch 52 connects the first end 1 of second electronic switch 52, second antenna element 200 is in first mode.
When 3rd end 3 of second electronic switch 52 connects the second end 2 of second electronic switch 52, second antenna element 200 is in second mode.
The first mode is signal correction pattern.The second mode is signal compensation pattern.
By taking the first antenna unit 100 as an example, when the first antenna unit 100 in first mode be correction mode when, the first signal that first emitter 11 is exported is exported to first compensation circuit 71 through first electronic switch 51 and first coupler 31 successively.First signal also through first amplifier 21 amplify and first coupler 31 after transmit to the first annular device 41, then transmitted via the first annular device 41 to the first antenna 61.The first annular device 41 produces a leakage signal.First signal is exported after being compensated through first compensation circuit 71 to the first power combiner device 101.The secondary signal of the 6th coupler 36 output of 72 pairs of second compensation circuit, second antenna element 200 is compensated.The secondary signal is exported after being compensated through second compensation circuit 72 to the first power combiner device 101.Signal is synthesized first and reduces signal and reduce signal output to the second coupler 32 by described first by second amplifier 22 by the first power combiner device 101.Second coupler 32 receives one the 3rd signal from the 3rd end 3 of the first annular device 41.Second coupler 32 is exported to first receiver 91 after the 3rd signal and described first are reduced into signal coupling.
The system controller 300 is used to monitor emitter, receiver and compensation circuit working condition.The system controller 300 is additionally operable to control the compensation circuit to carry out signal compensation with a presupposed solution.The signal compensation includes signal phase change, change in signal strength etc..The system controller 300 is used for the first reception signal for detecting that first receiver 91 is received, and adjusts the presupposed solution according to the signal to noise ratio in the first reception signal.
When the first antenna unit 100 is switched to compensation model, the first antenna unit is compensated according to correction mode to signal to be reduced with realizing to leakage signal and near-field interference signal.
The operation principle of second antenna element 200 is similar with the first antenna unit 100, will not be repeated here.
Second amplifier 22 is a variable operational amplifier.4th amplifier 24 is a variable operational amplifier.
In other embodiments, the MIMO antenna system using codebook 1000 can also include more antennas unit, such as 4 antenna elements.
In first compensation circuit 71, the second compensation circuit 72, the 3rd compensation circuit 73 and the 4th compensation circuit 74, phase shift and decay order can be changed, without influenceing signal compensation.
Fig. 2 is refer to, Fig. 2 discloses another better embodiment of compensation circuit.The compensation circuit 400 includes phase-shift circuit 500 and attenuator circuit 600.The phase-shift circuit 500 includes the 5th power divider 401, the 6th power divider 402, the 7th power divider 403 and the 3rd electronic switch 53.The attenuator circuit 600 includes the 8th power divider 404, the 9th power divider 405, the tenth power divider 406, the 11st attenuator 407, the 12nd attenuator 408, the 13rd attenuator 409 and the 14th attenuator 410, the 7th power combiner device 411, the 8th power combiner device 412 and the 9th power combiner device 413.
The input 1 of 5th power divider 401 is used to receive external signal.First output end 2 of the 5th power divider 401 connects the input 1 of the 6th power divider 402.Second output end 3 of the 5th power divider 401 connects the input 1 of the 7th power divider 403.First output end 1 of the 6th power divider 402 connects the first end 1 of the 3rd electronic switch 53.Second output end 2 of the 6th power divider 402 connects the second end 2 of the 3rd electronic switch 53.First output end 1 of the 7th power divider 403 connects the 3rd end 3 of the 3rd electronic switch 53.Second output end 2 of the 7th power divider 403 connects the 4th end 4 of the 3rd electronic switch 53.The control end 5 of 3rd electronic switch 53 connects the input 1 of the 8th power divider 404.First output end 2 of the 8th power divider 404 connects the input 1 of the 9th power divider 405.Second output end 3 of the 8th power divider 404 connects the input 1 of the tenth power divider 406.First output end 2 of the 9th power divider 405 connects the input 1 of the 11st attenuator 407.Second output end 3 of the 9th power divider 405 connects the input 1 of the 12nd attenuator 408.First output end 2 of the tenth power divider 406 connects the input 1 of the 13rd attenuator 409.Second output end 3 of the tenth power divider 406 connects the input 1 of the 14th attenuator 410.
The output end 2 of 11st attenuator 407 connects the first input end 1 of the 7th power combiner device 411.The output end 2 of 12nd attenuator 408 connects the second input 2 of the 7th power combiner device 411.The output end 2 of 13rd attenuator 409 connects the first input end 1 of the 8th power combiner device 412.The output end 2 of 14th attenuator 410 connects the second input 2 of the 8th power combiner device 412.The output end 3 of the 7th power combiner device 411 connects the first input end 1 of the 9th power combiner device 413.The output end 3 of the 8th power combiner device 412 connects the second input 2 of the 9th power combiner device 413.The output end 3 of the 9th power combiner device 413 is used for output signal.
The compensation circuit 400 passes through multiple power divider connection in series-parallel relations, the phase place change of 0-360 degree can be realized, the phase place change can be adjusted by the unlike signal end for controlling the control end 5 of the 3rd electronic switch 53 to connect the 3rd electronic switch 53.Also, by multiple attenuator parallel circuits effective attenuation can be carried out to signal.
The compensation circuit 400 can apply in first compensation circuit 71, the second compensation circuit 72, the 3rd compensation circuit 73 and the 4th compensation circuit 74.
By this design of electronic switch selection mode and efficient compensation circuit, MIMO antenna system using codebook 1000 of the present invention can be realized to be reduced to leakage signal and the effective of near-field interference signal.
Finally it should be noted that, the above embodiments are merely illustrative of the technical solutions of the present invention and it is unrestricted, although the present invention is described in detail with reference to preferred embodiment, it will be understood by those within the art that, technical scheme can be modified or equivalent substitution, without departing from the spirit and scope of technical solution of the present invention.
Claims (10)
1. a kind of antenna element, including emitter, receiver, circulator, controller and antenna, the antenna element also include：
First coupler, the first end of first coupler connects the emitter by the first amplifier, and the second end of first coupler connects the first end of the circulator, and the second end of the circulator connects the antenna；
Second coupler, the first end of second coupler connects the 3rd end of the circulator, and the second end of second coupler connects the receiver；
First compensation circuit, the input of first compensation circuit connects the second end of the 3rd coupler, and the output end of first compensation circuit connects the 4th end of second coupler；
First electronic switch, the first end of first electronic switch connects the emitter, and the second end of first electronic switch is connected to the 3rd end of first coupler, and the three-terminal link of first electronic switch is in the input of first compensation circuit；
When the first end of the first electronic switch described in the three-terminal link of first electronic switch, the antenna element is correction mode, the emitter launches the first signal to first compensation circuit, the emitter is launched first end and second end of first signal successively through the circulator and transmitted to the antenna, first compensation circuit handles output first after first signal and reduces signal to second coupler, the first end of second coupler receives the secondary signal of the end of circulator the 3rd transmission, second coupler reduces described first and one the 3rd signal is exported after signal is coupled with the secondary signal to the receiver.
2. antenna element as claimed in claim 1, it is characterised in that：First compensation circuit includes a phase-shift circuit and an attenuator circuit.
3. antenna element as claimed in claim 2, it is characterised in that：The phase-shift circuit includes some power dividers and the second electronic switch, and second electronic switch is used for the phase place change for adjusting signal.
4. antenna element as claimed in claim 2, it is characterised in that：The attenuator circuit includes some attenuators in parallel.
5. a kind of MIMO antenna system using codebook, including：
First antenna unit, the first antenna unit includes the first emitter, the first receiver, first annular device, the first compensation circuit, the second compensation circuit, first antenna and the first electronic switch；
Second antenna element, second antenna element includes the second emitter, the second receiver, the second circulator, the 3rd compensation circuit, the 4th compensation circuit, the second antenna and the second electronic switch；
The signal that first and second wherein described compensation circuit is used to receive for first receiver is reduced, and the signal that the 3rd and the 4th compensation circuit is used to receive for second receiver is reduced；First compensation circuit is used to be reduced for the leakage signal of the first annular device；The near-field interference signal that second compensation circuit is used for second antenna element received for the first antenna is reduced；3rd compensation circuit is used to be reduced for the leakage signal of second circulator；4th compensation circuit is used to be reduced for the near-field interference signal of the first antenna unit.
6. MIMO antenna system using codebook as claimed in claim 5, it is characterised in that：The first antenna unit includes the first to the 3rd coupler, the first end of first coupler connects first emitter by the first amplifier, second end of first coupler connects the first end of the first annular device, and the second end of the first annular device connects the first antenna；The first end of second coupler connects the 3rd end of the first annular device, and the second end of second coupler connects first receiver；The input of first compensation circuit connects the second end of the 3rd coupler, and the output end of first compensation circuit connects the 4th end of second coupler, and the three-terminal link of the 3rd coupler is in the input of the 4th compensation circuit；The first end of first electronic switch connects first emitter, and the second end of first electronic switch is connected to the 3rd end of first coupler, and the three-terminal link of first electronic switch is in the input of first compensation circuit.
7. MIMO antenna system using codebook as claimed in claim 6, it is characterised in that：Second antenna element includes the 4th to the 6th coupler, the first end of 4th coupler connects second emitter by the second amplifier, second end of the 4th coupler connects the first end of second circulator, and the second end of second circulator connects second antenna；The first end of 5th coupler connects the 3rd end of second circulator, and the second end of the 5th coupler connects second receiver；The input of 3rd compensation circuit connects the second end of the 6th coupler, and the output end of the 3rd compensation circuit connects the 4th end of the 5th coupler, the input of the second compensation circuit described in the three-terminal link of the 6th coupler；The first end of second electronic switch connects second emitter, and the second end of second electronic switch is connected to the 3rd end of the 4th coupler, and the three-terminal link of second electronic switch is in the input of second compensation circuit.
8. MIMO antenna system using codebook as claimed in claim 5, it is characterised in that：The MIMO antenna system using codebook also includes a system controller, the system controller connects first emitter, the second emitter, the first receiver, the second receiver, first to fourth compensation circuit respectively, and the system controller receives the signal to noise ratio of signal to adjust first to fourth compensation circuit by first and second described receiver of detection.
9. MIMO antenna system using codebook as claimed in claim 5, it is characterised in that：The output signal of first and second compensation circuit is exported to a power combiner device, the power combiner device output first reduces signal to second coupler, and second coupler reduces described first after signal is coupled with the secondary signal of the first annular device output and exports one the 3rd signal to first receiver.
10. MIMO antenna system using codebook as claimed in claim 5, it is characterised in that：First to fourth compensation circuit includes some attenuators in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610114175.4A CN107146956B (en) | 2016-03-01 | 2016-03-01 | Antenna element and MIMO antenna system using codebook |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610114175.4A CN107146956B (en) | 2016-03-01 | 2016-03-01 | Antenna element and MIMO antenna system using codebook |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107146956A true CN107146956A (en) | 2017-09-08 |
| CN107146956B CN107146956B (en) | 2019-08-30 |
Family
ID=59783205
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610114175.4A Expired - Fee Related CN107146956B (en) | 2016-03-01 | 2016-03-01 | Antenna element and MIMO antenna system using codebook |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107146956B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109257064A (en) * | 2018-10-30 | 2019-01-22 | 天津津航计算技术研究所 | A kind of double antenna RF front-end module |
| CN110320500A (en) * | 2019-06-10 | 2019-10-11 | 南京理工大学 | A kind of high integration, inexpensive Connectors for Active Phased Array Radar radio-frequency front-end |
| CN112350689A (en) * | 2020-10-31 | 2021-02-09 | 拓维电子科技(上海)有限公司 | Ultra-wideband digital control phase shifting device and phase control method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102237906A (en) * | 2010-04-20 | 2011-11-09 | 英特赛尔美国股份有限公司 | Systems and methods for improving antenna isolation using signal cancellation |
| CN104569930A (en) * | 2014-12-29 | 2015-04-29 | 北京理工雷科电子信息技术有限公司 | Leakage signal cancellation circuit of linear frequency modulation continuous wave radar |
| CN107147425A (en) * | 2016-03-01 | 2017-09-08 | 南宁富桂精密工业有限公司 | The antenna element of compensation circuit and the application compensation circuit |
-
2016
- 2016-03-01 CN CN201610114175.4A patent/CN107146956B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102237906A (en) * | 2010-04-20 | 2011-11-09 | 英特赛尔美国股份有限公司 | Systems and methods for improving antenna isolation using signal cancellation |
| CN104569930A (en) * | 2014-12-29 | 2015-04-29 | 北京理工雷科电子信息技术有限公司 | Leakage signal cancellation circuit of linear frequency modulation continuous wave radar |
| CN107147425A (en) * | 2016-03-01 | 2017-09-08 | 南宁富桂精密工业有限公司 | The antenna element of compensation circuit and the application compensation circuit |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109257064A (en) * | 2018-10-30 | 2019-01-22 | 天津津航计算技术研究所 | A kind of double antenna RF front-end module |
| CN110320500A (en) * | 2019-06-10 | 2019-10-11 | 南京理工大学 | A kind of high integration, inexpensive Connectors for Active Phased Array Radar radio-frequency front-end |
| CN112350689A (en) * | 2020-10-31 | 2021-02-09 | 拓维电子科技(上海)有限公司 | Ultra-wideband digital control phase shifting device and phase control method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107146956B (en) | 2019-08-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6194980B1 (en) | Quadrature hybrid RF combining system | |
| CN101304259B (en) | Leakage power reducing apparatus | |
| CN102393512B (en) | Single-antenna frequency-modulated continuous-wave radar radio frequency passive cancellation method | |
| CN101888252B (en) | Method and system for improving dynamic range in RF system | |
| CN102347778B (en) | Self-adapting interference cancellation device and debugging method thereof | |
| CN101841345B (en) | Time division duplex-remote radio unit | |
| CN104215936A (en) | Eight-unit T/R (transmitting/receiving) basic module with function of S-band multi-beam transceiving duplexing | |
| CN104569930A (en) | Leakage signal cancellation circuit of linear frequency modulation continuous wave radar | |
| CN111082831B (en) | Satellite-borne synchronous transmitting and receiving device and signal processing method | |
| WO2012145866A1 (en) | Method, apparatus and system for determining voltage standing wave ratio in downlink period of radio communication | |
| EP2512037B1 (en) | Radio frequency signal loopback method and outdoor unit | |
| CN109375176B (en) | Transmitter power amplifier module | |
| CN107146956A (en) | Antenna element and MIMO antenna system using codebook | |
| CN115037429A (en) | Full-duplex self-interference reduction method and system | |
| CN109633617B (en) | Millimeter wave receiving and dispatching front end based on single-channel target information extraction | |
| US9197309B2 (en) | Systems and methods for providing signals of multiple active wireless transmitters | |
| CN113364417A (en) | Adjustable load balance power amplifier structure | |
| CN203872199U (en) | Self-interference elimination circuit of wireless combination system | |
| TWI597946B (en) | Antenna module and multiple input and multiple output device | |
| CN106330241A (en) | Amplification integrated circuit | |
| CN207399200U (en) | A kind of wireless radio frequency discrimination RFID system | |
| Watkins et al. | Single antenna full duplex cancellation network for ISM band | |
| CN113507290B (en) | Bidirectional multi-polarization mode transceiving system and transceiving method thereof | |
| CN111130587A (en) | Novel SC frequency channel broadband TR subassembly | |
| CN107147425A (en) | The antenna element of compensation circuit and the application compensation circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20180704 Address after: 530007 the Guangxi Zhuang Autonomous Region Nanning hi tech Zone headquarters road 18, China ASEAN enterprise headquarters three phase 5 factory building Applicant after: NANNING FUGUI PRECISION INDUSTRIAL Co.,Ltd. Address before: 530007 the Guangxi Zhuang Autonomous Region Nanning hi tech Zone headquarters road 18, China ASEAN enterprise headquarters three phase 5 factory building Applicant before: NANNING FUGUI PRECISION INDUSTRIAL Co.,Ltd. Applicant before: HON HAI PRECISION INDUSTRY Co.,Ltd. |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190830 |