CN107147425A - The antenna element of compensation circuit and the application compensation circuit - Google Patents
The antenna element of compensation circuit and the application compensation circuit Download PDFInfo
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- CN107147425A CN107147425A CN201610115613.9A CN201610115613A CN107147425A CN 107147425 A CN107147425 A CN 107147425A CN 201610115613 A CN201610115613 A CN 201610115613A CN 107147425 A CN107147425 A CN 107147425A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/40—Circuits
- H04B1/50—Circuits using different frequencies for the two directions of communication
- H04B1/52—Hybrid arrangements, i.e. arrangements for transition from single-path two-direction transmission to single-direction transmission on each of two paths or vice versa
- H04B1/525—Hybrid arrangements, i.e. arrangements for transition from single-path two-direction transmission to single-direction transmission on each of two paths or vice versa with means for reducing leakage of transmitter signal into the receiver
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Abstract
A kind of compensation circuit, including phase-shift circuit and attenuator circuit.The phase-shift circuit includes some phase shifters being connected in parallel, and the phase-shift circuit is used to determine the phase range to be compensated of an input signal and the input signal is compensated；The attenuator circuit includes some attenuators being connected in parallel, and the attenuator circuit is used to receive the signal after the phase-shift circuit processing and carries out phase compensation and Amplitude Compensation to the signal after phase-shift circuit processing.The compensation circuit can realize effectively compensating by phase-shift circuit and attenuator circuit to signal.The present invention also provides a kind of antenna element of the application compensation circuit.
Description
Technical field
The present invention relates to wireless communication field, more particularly to a kind of compensation circuit, a kind of antenna element of the application compensation circuit 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 high-resolution phase shifter and attenuator with combining for combiner.
The content of the invention
In consideration of it, the compensation circuit and a kind of antenna element of the application compensation circuit of high efficiency compensation can be realized by being necessary that offer is a kind of.
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, the output end of first compensation circuit connects the 4th end of second coupler, and first compensation circuit is used to carry out phase compensation and Amplitude Compensation to signal；
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.
Further, first compensation circuit includes a phase-shift circuit and an attenuator circuit.
Further, 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.
Further, the attenuator circuit includes some attenuators in parallel.
Further, the antenna element includes a system controller, and the system controller is used for the parameter for adjusting first compensation circuit.
A kind of compensation circuit, including：
One phase-shift circuit, the phase-shift circuit includes some phase shifters being connected in parallel, and the phase-shift circuit is used for the phase range to be compensated for determining an input signal；
One attenuator circuit, the attenuator circuit includes some attenuators being connected in parallel, and the attenuator circuit is used to receive the signal after the phase-shift circuit processing and carries out phase compensation and Amplitude Compensation to the signal after phase-shift circuit processing.
Further, the phase-shift circuit includes the 5th power divider, 6th power divider, 7th power divider, 8th power divider, 9th power divider, tenth power divider and the 3rd electronic switch, the input of 5th power divider is used to receive external signal, first output end of the 5th power divider connects the input of the 6th power divider 2, second output end of the 5th power divider connects the input of the 7th power divider, first output end of the 6th power divider connects the first end of the 3rd electronic switch, second output end of the 6th power divider connects the second end of the 3rd electronic switch, first output end of the 7th power divider connects the 3rd end of the 3rd electronic switch, second output end of the 7th power divider connects the 4th end of the 3rd electronic switch, the control end of 3rd electronic switch connects the input of the 8th power divider, first output end of the 8th power divider connects the input of the 9th power divider, second output end of the 8th power divider connects the input of the tenth power divider.
Further, the attenuator circuit includes the 11st attenuator, 12nd attenuator, 13rd attenuator, 14th attenuator, 7th power combiner device, 8th power combiner device and the 9th power combiner device, first output end of the 9th power divider connects the input of the 11st attenuator, second output end of the 9th power divider connects the input of the 12nd attenuator, first output end of the tenth power divider connects the input of the 13rd attenuator, second output end of the tenth power divider connects the input of the 14th attenuator, the output end of 11st attenuator connects the first input end of the 7th power combiner device, the output end of 12nd attenuator connects the second input of the 7th power combiner device, the output end of 13rd attenuator connects the first input end of the 8th power combiner device, the output end of 14th attenuator connects the second input of the 8th power combiner device, the output end of the 7th power combiner device connects the first input end of the 9th power combiner device, the output end of the 8th power combiner device connects the second input of the 9th power combiner device, the output end of the 9th power combiner device is used for output signal.
Further, the phase-shift circuit includes the 4th electronic switch, 5th electronic switch, 5th phase shifter, 6th phase shifter, 7th phase shifter, 8th phase shifter and the 9th phase shifter, the control end of 4th electronic switch is used for input signal, first output end of the 4th electronic switch is connected to the first input end of the 5th electronic switch by the 5th phase shifter, second output end of the 4th electronic switch is connected to the second input of the 5th electronic switch by the 6th phase shifter, 3rd output end of the 4th electronics is connected to the 3rd input of the 5th electronic switch by the 7th phase shifter, 4th output end of the 4th electronic switch is connected to the 4th input of the 5th electronic switch by the 8th phase shifter, 5th output end of the 4th electronic switch is connected to the 5th input of the 5th electronic switch by the 9th phase shifter, the control end of 5th electronics is used for output signal.
Further, the 5th to the 9th phase shifter is power divider.
The compensation circuit can realize effectively compensating by phase-shift circuit and attenuator circuit to signal.
Brief description of the drawings
Fig. 1 is the circuit diagram of the better embodiment of inventive antenna unit.
Fig. 2 is the circuit diagram of the better embodiment of compensation circuit of the present invention.
Fig. 3 is the circuit diagram of another better embodiment of the phase-shift circuit of compensation circuit of the present invention.
Primary clustering 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 |
| 4th electronic switch | 54 |
| 5th electronic switch | 55 |
| 5th phase shifter | 555 |
| 6th phase shifter | 556 |
| 7th phase shifter | 557 |
| 8th phase shifter | 558 |
| 9th phase shifter | 559 |
Following embodiment will further illustrate the present invention with reference to above-mentioned accompanying drawing.
Embodiment
Fig. 1 is refer to, compensation circuit of the present invention is applied in a MIMO antenna system using codebook 1000.The MIMO antenna system using codebook 1000 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.
There are two kinds of interference signals when the MIMO antenna system using codebook 1000 works: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 a phase-shift circuit 500 and an 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 phase-shift circuit 500 is used to determine quadrant residing for input signal phase to be compensated.
In present embodiment, wherein the 5th power divider 401 is 90 degree of quadrature power dividers, first output end 2 of the 5th power divider 401 is used to export the signal after 0 degree of phase adjustment, and the second output end 3 of the 5th power divider 401 is used to export the signal after 90 degree of phase adjustments.6th power divider 402 is 180 degree quadrature power divider, first output end 2 of the 6th power divider 402 is used to export the signal after 0 degree of phase adjustment, and the second output end 3 of the 6th power divider 402 is used to export the signal after 180 degree phase adjustment.7th power divider 403 is 180 degree quadrature power divider, first output end 2 of the 7th power divider 403 is used to export the signal after 90 degree of phase adjustments, and the second output end 2 of the 7th power divider 403 is used to export the signal after 270 degree of phase adjustments.In this way, the phase adjustment of the phase-shift circuit 500 can cover 0 degree to 360 degree four quadrants.The quadrant (0,180,90,270 degree) that user can adjust through first to fourth end selected phase of the 3rd electronic switch 53.
The attenuator circuit 600 is used to further determine that phase to be compensated and compensate signal amplitude.The attenuator circuit 600 includes quadrature phase shifter and high-resolution attenuator.The attenuator circuit 600 is used for having determined that the signal of quadrant is fine-tuned, to determine that signal is having determined that the phase to be adjusted in quadrant.
The power divider 404 is 90 degree of quadrature power dividers, and its first output end 2 exports zero phase, i.e., signal thereafter is equivalent to real part.Second output end 3 of the power divider 404 has relative 90 degree phase shift, i.e. thereafter signal works as real part and imaginary signals after merging equivalent to imaginary part, its size is influenceed by digital control attenuator (407 ~ 410), and phase also produces 0 ~ 90 degree of change accordingly
9th power divider 405 and the tenth power divider 406 are equiphase power divider.
7th power combiner device 411, the 8th power combiner device 412 and the 9th power combiner device 413 are equiphase power combiner device.
The compensation circuit 400 passes through multiple power divider connection in series-parallel relations, it is possible to achieve the phase place change of 0-360 degree, and the unlike signal end that the phase place change can connect the 3rd electronic switch 53 through the control end 5 of the 3rd electronic switch 53 of control is adjusted.Also, through multiple attenuator parallel circuits fine angle phase shift can be carried out to signal.
Fig. 3 is refer to, compensation circuit of the present invention can reach more fully phase adjustment by multiple phase shifter function overlapping coverage sectors phases.
In present embodiment, the phase-shift circuit of the compensation circuit includes the 4th electronic switch 54, the 5th electronic switch 55, the 5th phase shifter 555, the 6th phase shifter 556, the 7th phase shifter 557, the 8th phase shifter 558 and the 9th phase shifter 559.
The control end 0 of 4th electronic switch 54 is used for input signal, and the first output end 1 of the 4th electronic switch 54 is connected to the first input end 1 of the 5th electronic switch 55 by the 5th phase shifter 555.Second output end 2 of the 4th electronic switch 54 is connected to the second input 2 of the 5th electronic switch 55 by the 6th phase shifter 556.3rd output end 3 of the 4th electronic switch 54 is connected to the 3rd input 3 of the 5th electronic switch 55 by the 7th phase shifter 557.4th output end 4 of the 4th electronic switch 54 is connected to the 4th input 4 of the 5th electronic switch 55 by the 8th phase shifter 558.5th output end 5 of the 4th electronic switch 54 is connected to the 5th input 5 of the 5th electronic switch 55 by the 9th phase shifter 559.The control end 0 of 5th electronic switch 55 is used for output signal.
The control end 0 of 4th electronic switch 54 can select one of first to the 5th output end with the 4th electronic switch 54 to be connected.
The control end 0 of 5th electronic switch 55 can select to be connected with one of the first to the 5th input of the 5th electronic switch 55.
In a better embodiment, the 5th to the 9th phase shifter is 90-degree phase shifter.5th to the 9th phase shifter is divided into 5 scopes finely to cover all phases by 360 degree.
In a better embodiment, the 5th to the 9th phase shifter is wilkinson power dividers.
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.
In a better embodiment, repeatedly test can be carried out in the manufacturing process of the MIMO antenna system using codebook 1000 to the receiving and transmitting signal of emitter, receiver and looks into value table to set up one, the value table of looking into is used to store the receiving and transmitting signal intensity of the MIMO antenna system using codebook 1000 and the mapping relations of compensation circuit running parameter to realize the effective compensation to signal.
Compensation circuit 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, the output end of first compensation circuit connects the 4th end of second coupler, and first compensation circuit is used to carry out phase compensation and Amplitude Compensation to signal；
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. antenna element as claimed in claim 1, it is characterised in that：The antenna element includes a system controller, and the system controller is used for the parameter for adjusting first compensation circuit.
6. a kind of compensation circuit, including：
One phase-shift circuit, the phase-shift circuit includes some phase shifters being connected in parallel, and the phase-shift circuit is used to determine the phase range to be compensated of an input signal and the input signal is compensated；
One attenuator circuit, the attenuator circuit includes some attenuators being connected in parallel, and the attenuator circuit is used to receive the signal after the phase-shift circuit processing and carries out phase compensation and Amplitude Compensation to the signal after phase-shift circuit processing.
7. compensation circuit as claimed in claim 6, it is characterised in that：The phase-shift circuit includes the 5th power divider, 6th power divider, 7th power divider, 8th power divider, 9th power divider, tenth power divider and the 3rd electronic switch, the input of 5th power divider is used to receive external signal, first output end of the 5th power divider connects the input of the 6th power divider 2, second output end of the 5th power divider connects the input of the 7th power divider, first output end of the 6th power divider connects the first end of the 3rd electronic switch, second output end of the 6th power divider connects the second end of the 3rd electronic switch, first output end of the 7th power divider connects the 3rd end of the 3rd electronic switch, second output end of the 7th power divider connects the 4th end of the 3rd electronic switch, the control end of 3rd electronic switch connects the input of the 8th power divider, first output end of the 8th power divider connects the input of the 9th power divider, second output end of the 8th power divider connects the input of the tenth power divider.
8. compensation circuit as claimed in claim 7, it is characterised in that：The attenuator circuit includes the 11st attenuator, 12nd attenuator, 13rd attenuator, 14th attenuator, 7th power combiner device, 8th power combiner device and the 9th power combiner device, first output end of the 9th power divider connects the input of the 11st attenuator, second output end of the 9th power divider connects the input of the 12nd attenuator, first output end of the tenth power divider connects the input of the 13rd attenuator, second output end of the tenth power divider connects the input of the 14th attenuator, the output end of 11st attenuator connects the first input end of the 7th power combiner device, the output end of 12nd attenuator connects the second input of the 7th power combiner device, the output end of 13rd attenuator connects the first input end of the 8th power combiner device, the output end of 14th attenuator connects the second input of the 8th power combiner device, the output end of the 7th power combiner device connects the first input end of the 9th power combiner device, the output end of the 8th power combiner device connects the second input of the 9th power combiner device, the output end of the 9th power combiner device is used for output signal.
9. compensation circuit as claimed in claim 6, it is characterised in that：The phase-shift circuit includes the 4th electronic switch, 5th electronic switch, 5th phase shifter, 6th phase shifter, 7th phase shifter, 8th phase shifter and the 9th phase shifter, the control end of 4th electronic switch is used for input signal, first output end of the 4th electronic switch is connected to the first input end of the 5th electronic switch by the 5th phase shifter, second output end of the 4th electronic switch is connected to the second input of the 5th electronic switch by the 6th phase shifter, 3rd output end of the 4th electronics is connected to the 3rd input of the 5th electronic switch by the 7th phase shifter, 4th output end of the 4th electronic switch is connected to the 4th input of the 5th electronic switch by the 8th phase shifter, 5th output end of the 4th electronic switch is connected to the 5th input of the 5th electronic switch by the 9th phase shifter, the control end of 5th electronics is used for output signal.
10. compensation circuit as claimed in claim 9, it is characterised in that：5th to the 9th phase shifter is power divider.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107146956A (en) * | 2016-03-01 | 2017-09-08 | 南宁富桂精密工业有限公司 | Antenna element and MIMO antenna system using codebook |
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