CN111162816B - High-isolation interference system shared by transmitting and receiving antennas - Google Patents
High-isolation interference system shared by transmitting and receiving antennas Download PDFInfo
- Publication number
- CN111162816B CN111162816B CN201911288158.2A CN201911288158A CN111162816B CN 111162816 B CN111162816 B CN 111162816B CN 201911288158 A CN201911288158 A CN 201911288158A CN 111162816 B CN111162816 B CN 111162816B
- Authority
- CN
- China
- Prior art keywords
- transmitting
- radio frequency
- receiving
- modulation
- state
- 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.)
- Active
Links
- 238000002955 isolation Methods 0.000 title claims abstract description 33
- 230000003321 amplification Effects 0.000 claims abstract description 51
- 238000003199 nucleic acid amplification method Methods 0.000 claims abstract description 51
- 230000008878 coupling Effects 0.000 claims description 20
- 238000010168 coupling process Methods 0.000 claims description 20
- 238000005859 coupling reaction Methods 0.000 claims description 20
- 230000000295 complement effect Effects 0.000 claims description 2
- 238000003780 insertion Methods 0.000 abstract description 7
- 230000037431 insertion Effects 0.000 abstract description 7
- 230000005540 biological transmission Effects 0.000 description 8
- 238000006243 chemical reaction Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 6
- 239000007787 solid Substances 0.000 description 4
- 238000010894 electron beam technology Methods 0.000 description 3
- 238000005070 sampling Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000003079 width control Methods 0.000 description 1
Images
Classifications
-
- 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
- H04B1/401—Circuits for selecting or indicating operating mode
-
- 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
- H04B1/02—Transmitters
- H04B1/04—Circuits
- H04B1/0458—Arrangements for matching and coupling between power amplifier and antenna or between amplifying stages
-
- 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
- H04B1/06—Receivers
- H04B1/16—Circuits
- H04B1/18—Input circuits, e.g. for coupling to an antenna or a transmission line
-
- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/38—Synchronous or start-stop systems, e.g. for Baudot code
- H04L25/40—Transmitting circuits; Receiving circuits
- H04L25/49—Transmitting circuits; Receiving circuits using code conversion at the transmitter; using predistortion; using insertion of idle bits for obtaining a desired frequency spectrum; using three or more amplitude levels ; Baseband coding techniques specific to data transmission systems
- H04L25/4902—Pulse width modulation; Pulse position modulation
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Transmitters (AREA)
Abstract
The invention discloses an interference system shared by high-isolation transmit-receive antennas, wherein in a receiving state, a transmit-receive pulse control circuit generates a transmit modulation signal and a receive modulation signal according to a modulation pulse, the transmit modulation signal is sent to a radio frequency amplification chain, the radio frequency amplification chain is controlled to be in a turn-off amplification state, the transmit-receive antennas send the received signals to a single-pole double-throw switch through a coupler, the single-pole double-throw switch outputs the received signals to a low-noise amplifier, and the received signals are sent to a received signal processing cabinet after being amplified by the low-noise amplifier; when the radio frequency amplifier is in a transmitting state, the transmitting and receiving pulse control circuit generates transmitting and receiving modulation signals according to the modulation pulses, the transmitting and receiving modulation signals are transmitted to the radio frequency amplification chain, the radio frequency amplification chain is controlled to enter an amplifying state, the radio frequency signals amplified by the radio frequency amplification chain are transmitted out through the transmitting and receiving antenna, and the receiving modulation signals are transmitted to the single-pole double-throw switch to control the output end of the single-pole double-throw switch to be connected with a load. The system has the advantages of high receiving and transmitting isolation, small feeder insertion loss, small volume and high reliability.
Description
Technical Field
The invention belongs to the technical field of electronic countermeasure, and particularly relates to a high-isolation interference system shared by a transmitting antenna and a receiving antenna.
Background
The receiving and transmitting antenna can reduce the volume and the weight and improve the suitability of the equipment. Therefore, in some electronic countermeasure systems which have high requirements on volume and can operate in a time-sharing manner during transmission and reception, a common transmission and reception antenna technology can be adopted. The existing antenna transceiving common system realizes the isolation of a receiving branch and a transmitting branch by using a high-power circulator or a high-power microwave switch between the transmitting branch and an antenna and between the receiving branch and the antenna, and the scheme has the defects that: 1. the insertion loss of the high-power circulator or the high-power microwave switch is large; 2. the receiving and transmitting isolation degree depends on the technological level of a high-power circulator and a high-power microwave switch; 3. the high-power circulator or the high-power microwave switch has larger volume and needs heat dissipation; 4. the front stage of the receiving branch needs to be protected by adding a first-stage amplitude limiter, so that the signal quality of the receiving branch is reduced.
Disclosure of Invention
The invention aims to provide an interference system shared by high-isolation transmitting and receiving antennas.
The technical solution for realizing the purpose of the invention is as follows: an interference system shared by high-isolation transmit-receive antennas comprises: the receiving and transmitting pulse control circuit generates transmitting modulation signals and receiving modulation signals according to modulation pulses in a receiving state, the transmitting modulation signals are transmitted to the radio frequency amplification chain, the radio frequency amplification chain is controlled to be in a turn-off amplification state, the receiving and transmitting antenna transmits the received signals to the single-pole double-throw switch through the coupler, the single-pole double-throw switch outputs the received signals to the low-noise amplifier, the received signals are amplified by the low-noise amplifier and then transmitted to the receiving signal processing case, the amplified received signals are processed by the receiving signal processing case and then transmitted to the interference signal processing case, and the interference signal processing case generates required transmitting signals according to interference patterns; when the radio frequency signal is in a transmitting state, the transmitting and receiving pulse control circuit generates a transmitting modulation signal and a receiving modulation signal according to the modulation pulse, transmits the transmitting modulation signal to the radio frequency amplification chain, controls the radio frequency amplification chain to enter an amplifying state, transmits the radio frequency signal amplified by the radio frequency amplification chain out through the transmitting and receiving antenna, and receives the modulation signal to the single-pole double-throw switch to control the output end of the single-pole double-throw switch to be connected with a load.
Compared with the prior art, the invention has the remarkable advantages that: 1) the receiving and transmitting isolation degree is high: when receiving, the modulation pulse width of the transmitting-receiving branch controls to turn off the drain power supply of the solid-state amplifier or turn off the electron beam of the traveling wave tube, so that the transmitting-branch amplifier is in a cut-off state, the output end of the transmitting-receiving branch amplifier is close to natural noise, and the transmitting-receiving isolation degree is improved; 2) the insertion loss of the feeder line is small: the output isolation is not provided with a high-power circulator or a high-power microwave switch, so that the insertion loss of a feeder line is reduced; 3) the volume is small: the coupling is realized in a radio frequency cavity inside the traveling wave tube, or the coupling is realized by a solid-state amplifier output microstrip line or a cavity, so that the system volume is reduced; 4) the reliability is high: the microwave switch is connected with the load, the input end of the receiving branch circuit does not have a radio frequency signal, and an amplitude limiter does not need to be connected in series at the front stage of the receiving branch circuit, so that the quality of the received signal and the reliability of a system are improved.
Drawings
Fig. 1 is a schematic block diagram of an interference system shared by high-isolation transmit-receive antennas according to the present invention.
Fig. 2 is a timing diagram of the modulated signal transmitted and the modulated signal received by the transreceiver pulse control circuit of the present invention.
Fig. 3 is a schematic block diagram of the transmission modulation with the amplification chain as the traveling wave tube system according to the present invention.
Fig. 4 is a schematic block diagram of the emission modulation with the amplification chain in the solid state.
Detailed Description
The invention is further illustrated by the following examples in conjunction with the accompanying drawings.
As shown in fig. 1, the interference system shared by the high-isolation transmit-receive antenna of the present invention comprises:
the device comprises a received signal processing case 1, an interference signal processing case 2, a radio frequency amplification chain 3, a coupler 4, a transceiving antenna 5, a transceiving pulse control circuit 6, a single-pole double-throw switch 7, a load 8 and a low noise amplifier 9, wherein in a transmitting state, the transceiving pulse control circuit 6 generates a transmitting modulation signal and a receiving modulation signal according to a modulation pulse, the transmitting modulation signal is sent to the radio frequency amplification chain 3, the radio frequency amplification chain 3 is controlled to enter an amplifying state, the radio frequency signal amplified by the radio frequency amplification chain 3 is transmitted out through the transceiving antenna 5, the receiving modulation signal is sent to the single-pole double-throw switch 7, and the output end of the receiving modulation signal is connected with the load 8; when in a receiving state, the transmitting and receiving pulse control circuit 6 generates a transmitting modulation signal and a receiving modulation signal according to the modulation pulse, transmits the modulation signal to the radio frequency amplification chain 3, controls the radio frequency amplification chain 3 to be in a turn-off amplification state, reduces transmitting noise to ensure the transmitting and receiving isolation degree, the transmitting and receiving antenna transmits the received signal to the single-pole double-throw switch 7 through the coupler 4, receives the modulation signal and transmits the modulation signal to the single-pole double-throw switch 7 to control the output end of the single-pole double-throw switch to be connected with the low-noise amplifier 7, and the receiving and transmitting antenna 5 receives external microwave signals.
In a receiving state, a received radio frequency signal is sent to a single-pole double-throw switch 7 through a coupling end of a coupler 4 through a receiving and sending antenna 5, the single-pole double-throw switch 7 outputs a received signal to a low-noise amplifier 9, and the received signal is amplified by the low-noise amplifier 9 and then sent to a received signal processing cabinet 1; the received signal is processed by the received signal processing case 1 and then sent to the interference signal processing case 2, the interference signal processing case 2 generates a required transmitting signal according to an interference pattern and sends the transmitting signal to the radio frequency amplification chain 3, meanwhile, the modulation pulse is sent to the transceiving pulse control circuit 6, the transceiving pulse control circuit controls the radio frequency amplification chain 3 to enter an amplification state, meanwhile, the radio frequency output of the single-pole double-throw switch 7 is switched to a load 8 end, the radio frequency amplification chain 3 sends the amplified signal to the coupler 4, and then the amplified signal is transmitted through the transceiving antenna 5, and antenna sharing in the transceiving state is completed.
In the invention, the output of the single-pole double-throw switch is connected with the load 8 in a transmitting state, and the single-pole double-throw switch 7 outputs two paths of isolation, thereby ensuring that no high-power radio-frequency signal exists at the input end of the low-noise amplifier 9 in transmitting and no limiter is required to be added for protection.
Further, the main radio frequency path of the coupler 4 is a through path, the coupling degree of the coupling end to the radio frequency input end (connected to the end of the radio frequency amplification chain 3) is lower, generally-40 dB, and the coupling degree of the coupling end to the radio frequency output end (connected to the end of the receiving and transmitting antenna 5) is higher, generally-5 dB.
Further, the coupler 4 can realize coupling in the radio frequency cavity inside the traveling wave tube when the radio frequency amplification chain 3 is a traveling wave tube system amplification chain; when the radio frequency amplification chain 3 is a solid system amplification chain, coupling can be realized on an output microstrip line or a cavity of the solid amplifier.
Further, the timing of the transmission modulation signal and the reception modulation signal generated by the transceiving pulse control circuit 6 is shown in detail in fig. 2. The transmitting modulation signal and the receiving modulation signal generated by the transceiving pulse control circuit are complementary pulses with a protection dead zone, namely the transmitting modulation signal and the receiving modulation signal are both low when the protection dead zone is reserved, and in addition, the receiving modulation signal is low when the transmitting modulation signal is high, and the receiving modulation signal is high when the transmitting modulation signal is low. As shown in the figure, Vr is a received modulation signal, a high level indicates that the output of the single-pole double-throw switch 7 is connected with the low-noise amplifier 9 and is in a receiving state, and a low level indicates that the output of the single-pole double-throw switch 7 is connected with the load 8; vt is a transmission modulation signal, a high level indicates that the rf amplification chain 3 is in an amplification state, and a low level indicates that the rf amplification chain 3 is in a cut-off state; the time t1 is the time when the received modulation signal is converted from high to low, the time t2 is the time when the transmitted modulation signal is converted from low to high, the time t1-t2 is the protection dead time Td, Td is generally 1-1.5 times of the front and back edges (such as Trise and Tfall) of the modulation pulse, the system does not receive and does not transmit in the time, and particularly, the Trise and Tfall are about 50ns, and Td can be set to 50ns, for an 8-18GHz interference system with the average power of 200W.
Further, when the radio frequency amplification chain 3 is a traveling wave system amplification chain, the coupler 4 can realize coupling in a radio frequency cavity inside a traveling wave tube; when the radio frequency amplification chain 3 is a solid-state amplification chain, coupling can be realized on an output microstrip line or a cavity of the solid-state amplifier.
The amplification chain in the interference system shared by the high-isolation transmit-receive antenna is a transmission modulation schematic block diagram of a traveling wave tube system, as shown in fig. 3, and comprises a filament low-voltage conversion circuit 31, a signal isolation transformer 32, a filament modulator transformer 33, a filament modulation high-voltage circuit 34 and a filament isolation sampling transformer 35; the filament low-voltage conversion circuit 31 is supplied with auxiliary power from the outside; after receiving a filament preheating instruction, the filament low-voltage conversion circuit 31 converts direct-current power supply chopped waves sent from the outside into high-frequency switching pulses, and the filament modulator transformer 33 transmits the high-frequency switching pulses to the filament modulator high-voltage circuit 34 after isolated conversion to generate a modulation power supply and a filament power supply suspended on the high voltage of the traveling wave tube spiral; a closed-loop filament voltage negative feedback signal of the filament modulator high-voltage circuit 34 is sent to the filament low-voltage conversion circuit 31 through the filament isolation sampling transformer 35 to complete the voltage stabilization closed loop of the filament modulator; the transmitting modulation signal generated by the transmitting-receiving pulse control circuit 6 is converted into a modulation carrier signal by the filament low-voltage conversion circuit 31, and the modulation carrier signal is transmitted to the filament modulator high-voltage circuit 34 by the signal isolation transformer 32 to control the voltage of the traveling wave tube modulator to be switched, so that the pulse modulation of the traveling wave tube is completed. Under the modulation mode, the electron beam of the traveling wave tube is cut off in a receiving state, and the noise of the output end of the traveling wave tube is almost zero and is close to natural noise.
The transmission modulation principle block diagram of the interference system shared by the high-isolation transceiving antennas, in which the amplification chain is a solid system, is shown in fig. 4 and comprises an and gate 41, a driver 42, a switching transistor 43 and a solid-state power amplifier 44; the emission command and the emission modulation signal are input to the driver 42 after being input to the and gate 41, and the driver 42 inputs the emission command and the emission modulation signal to the switching transistor 43 to control the switching thereof, so as to realize the drain power source modulation of the solid-state power amplifier 44. Under the drain modulation mode, the drain power supply is disconnected when the solid-state power amplifier is in a receiving state, and the noise of the output end is almost zero and is close to the natural noise.
When the interference system shared by the high-isolation receiving and transmitting antenna is in a receiving state, the received radio-frequency signal is sent to the single-pole double-throw radio-frequency switch through the coupling end of the coupler through the receiving and transmitting antenna, the single-pole double-throw switch outputs the received signal to the low-noise amplifier, and the received signal is amplified by the low-noise amplifier and then sent to the received signal processing cabinet; the receiving signal is processed by the receiving signal processing case and then sent to the interference signal processing case, the interference signal processing case generates a required transmitting signal according to an interference pattern and sends the transmitting signal to the radio frequency amplification chain, meanwhile, the modulation pulse is sent to the receiving and transmitting pulse control circuit, the receiving and transmitting pulse control circuit controls the radio frequency amplification chain to enter an amplification state, meanwhile, the radio frequency output of the single-pole double-throw switch is switched to a load end, the radio frequency amplification chain sends the amplified signal to the coupler and then the amplified signal is transmitted out through the antenna, and antenna sharing in the receiving and transmitting state is completed. The interference system shared by the transmitting and receiving antennas has the characteristics of high transmitting and receiving isolation, small feeder insertion loss, small volume, high reliability and the like.
In view of the above, the invention turns off the drain power supply of the solid-state amplifier or turns off the electron beam of the traveling wave tube during receiving by the modulation pulse width control of the transceiving branch, so that the transmitting branch amplifier is in a cut-off state, the output end is close to natural noise, and the transceiving isolation is improved; when in transmission, the coupling end signal is connected with a load through a microwave switch, the input end of the receiving branch circuit does not have a radio frequency signal, and an amplitude limiter does not need to be connected in series with the front stage of the receiving branch circuit, so that the quality of the received signal and the reliability of a system are improved; the output isolation form does not use a high-power circulator or a high-power microwave switch, the coupling can be realized in a radio frequency cavity inside the traveling wave tube when the traveling wave tube system amplifies the chain, and the coupling can be realized in a micro-strip line or a cavity output by the solid-state amplifier when the solid-state system amplifies the chain, so that the insertion loss of a feeder line is reduced, and the volume is reduced.
In a word, the interference system shared by the transmitting and receiving antennas has the characteristics of high transmitting and receiving isolation, small feeder insertion loss, small volume, high reliability and the like.
In summary, the above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. An interference system shared by high isolation transmit receive antennas, comprising: the interference signal processing device comprises a received signal processing case (1), an interference signal processing case (2), a radio frequency amplification chain (3), a coupler (4), a transmitting and receiving antenna (5), a transmitting and receiving pulse control circuit (6), a single-pole double-throw switch (7), a load (8) and a low-noise amplifier (9), wherein in a receiving state, the transmitting and receiving pulse control circuit (6) generates a transmitting modulation signal and a receiving modulation signal according to modulation pulses, the transmitting modulation signal is transmitted to the radio frequency amplification chain (3), the radio frequency amplification chain (3) is controlled to be in a turn-off amplification state, the transmitting and receiving antenna (5) transmits the received signal to the single-pole double-throw switch (7) through the coupler (4), the single-pole double-throw switch (7) outputs the received signal to the low-noise amplifier (9), the received signal is transmitted to the received signal processing case (1) after being amplified by the noise amplifier (9), and the amplified received signal is transmitted to the interference signal processing case (1) (2) The interference signal processing case (2) generates a required transmitting signal according to the interference pattern; when in a transmitting state, the transmitting and receiving pulse control circuit (6) generates a transmitting modulation signal and a receiving modulation signal according to a modulation pulse, transmits the modulation signal to the radio frequency amplification chain (3), controls the radio frequency amplification chain (3) to enter an amplification state, transmits the radio frequency signal amplified by the radio frequency amplification chain (3) through the transmitting and receiving antenna (5), receives the modulation signal and transmits the modulation signal to the single-pole double-throw switch (7) to control the output end of the single-pole double-throw switch to be connected with a load (8); the transmitting modulation signal and the receiving modulation signal generated by the transceiving pulse control circuit (6) are complementary pulses with a protection dead zone.
2. The high-isolation interference system shared by the transmitting and receiving antennas of claim 1, wherein the main radio frequency path of the coupler (4) is through, the coupling degree of the coupling end to the radio frequency input end is-30 dB, and the coupling degree of the coupling end to the radio frequency output end is-5 dB.
3. The high-isolation interference system shared by the transmitting and receiving antennas of claim 1 or 2, wherein the radio frequency amplifier chain (3) is a traveling wave system amplifier chain.
4. The high-isolation interference system shared by the transmitting and receiving antennas of claim 3, wherein the coupler (4) is coupled in a radio frequency cavity inside the traveling wave tube.
5. The high-isolation interference system shared by the transmitting and receiving antennas of claim 1 or 2, wherein the radio frequency amplifier chain (3) is a solid-state amplifier chain.
6. The interference system of claim 5, wherein the high isolation transmit/receive antenna comprises: the coupler (4) realizes coupling on a microstrip line or a cavity of the output of the solid-state amplifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911288158.2A CN111162816B (en) | 2019-12-15 | 2019-12-15 | High-isolation interference system shared by transmitting and receiving antennas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911288158.2A CN111162816B (en) | 2019-12-15 | 2019-12-15 | High-isolation interference system shared by transmitting and receiving antennas |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111162816A CN111162816A (en) | 2020-05-15 |
| CN111162816B true CN111162816B (en) | 2021-09-10 |
Family
ID=70557142
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911288158.2A Active CN111162816B (en) | 2019-12-15 | 2019-12-15 | High-isolation interference system shared by transmitting and receiving antennas |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111162816B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113364510A (en) * | 2021-05-10 | 2021-09-07 | 上海航天电子有限公司 | Structure and method for improving satellite-borne VDES load receiving and transmitting isolation |
| CN116074175B (en) * | 2023-02-14 | 2024-11-05 | 电子科技大学 | Active backscattering 2ASK modulating device |
| CN116527064B (en) * | 2023-04-27 | 2025-11-25 | 中国船舶集团有限公司第七二三研究所 | A radio frequency noise suppression circuit and a distributed power supply multi-beam transmitter |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100844828B1 (en) * | 2006-11-24 | 2008-07-08 | 주식회사알에프윈도우 | Feedback Interference Cancellation Wireless Repeater with Antenna |
| CN101571590B (en) * | 2009-06-10 | 2011-04-27 | 上海科勒电子科技有限公司 | Low-speed microwave detection system |
| CN102420634A (en) * | 2011-12-07 | 2012-04-18 | 捷开通讯科技(上海)有限公司 | Wireless communication transmitting and receiving system |
| CN102955151B (en) * | 2012-10-09 | 2015-06-03 | 中国人民解放军63892部队 | Adaptive cross-polarization active jamming method and device |
| CN104993253B (en) * | 2015-05-21 | 2017-09-01 | 中国电子科技集团公司第十研究所 | Active Phased Array Antenna Radio Frequency Link System and Its Method for Determining Transceiver Isolation |
| CN109274388B (en) * | 2018-09-30 | 2021-06-04 | 中国人民解放军海军工程大学 | Radio frequency cancellation device and method for interference reconstruction in digital domain |
| CN110361708A (en) * | 2019-08-21 | 2019-10-22 | 上海无线电设备研究所 | A kind of microwave transmitting and receiving component self-checking circuit and method |
-
2019
- 2019-12-15 CN CN201911288158.2A patent/CN111162816B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN111162816A (en) | 2020-05-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111162816B (en) | High-isolation interference system shared by transmitting and receiving antennas | |
| JP6279861B2 (en) | System and method for combination of frequency modulated continuous wave and pulse compression transmission operation | |
| CN201600448U (en) | Millimeter wave coherent seeker front-end device | |
| CN111025235A (en) | Microwave TR assembly with ultra-wide working bandwidth | |
| CN109375176B (en) | Transmitter power amplifier module | |
| JP2014095690A5 (en) | ||
| CN114200408B (en) | A meter-wave dual-frequency dual-polarization radar transceiver front end | |
| CN101841346A (en) | wireless transceiver | |
| CN205812005U (en) | A kind of Five-channel millimeter wave transceiving assembly | |
| CN109257064A (en) | A kind of double antenna RF front-end module | |
| CN100382468C (en) | Time division duplex radio communication system receivel/send linear switch circuit and its realizing method | |
| CN203057147U (en) | Transmit-receive commutation circuit of bilateral amplifier | |
| KR20120013138A (en) | Amplifier supporting multiple systems and amplification method thereof | |
| CN110098098B (en) | Traveling wave tube slow wave system, traveling wave tube comprising same and traveling wave tube receiving and transmitting assembly | |
| CN104348426B (en) | A kind of pattern-band high power amplifier device | |
| CN107146956B (en) | Antenna element and MIMO antenna system using codebook | |
| CN113660004B (en) | Multimode multiplexing transceiving front-end circuit and control method | |
| CN121000358A (en) | High-isolation full-duplex transceiver system and control method | |
| CN104954028B (en) | A kind of timesharing dual output emission system | |
| US7013114B2 (en) | Impedence-matched transmitting device having high interference immunity | |
| CN216774766U (en) | A high-frequency broadband high-power transceiver unit | |
| CN211702007U (en) | L-waveband high-power single-pole double-throw switch | |
| CN211406019U (en) | Four-channel transceiving component | |
| CN214256249U (en) | High-power preamplifier | |
| CN215344572U (en) | Anti-interference power amplifier microwave communication system |
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 | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: 225001 No. 26, South River, Jiangsu, Yangzhou Applicant after: Yangzhou Institute of marine electronic instruments (no.723 Institute of China Shipbuilding Industry Corp.) Address before: 225001 No. 186 East Wuzhou Road, Yangzhou City, Jiangsu Province Applicant before: Yangzhou Institute of marine electronic instruments (no.723 Institute of China Shipbuilding Industry Corp.) |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant |