CN203691393U - C wave band high performance transmit-receive device - Google Patents
C wave band high performance transmit-receive device Download PDFInfo
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- CN203691393U CN203691393U CN201320753774.2U CN201320753774U CN203691393U CN 203691393 U CN203691393 U CN 203691393U CN 201320753774 U CN201320753774 U CN 201320753774U CN 203691393 U CN203691393 U CN 203691393U
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Abstract
The utility model relates to a C wave band high performance transmit-receive device, and solves the problems of large group delay in a wide frequency band, low filter rectangular coefficient, low channel flatness and low stray inhibition ratio of a conventional transmit-receive device; an intermediate frequency link is provided with straight through, a positive slope equalizer, and a negative slope equalizer, so a calibration path can be selected for each frequency band according to different amplitude frequency characteristics of a channel high frequency portion, thereby realizing complementation coupling, and ensuring high flatness performance of the channel; the filter employs a suspending microstrip filter, and simultaneously a digital control attenuator is used to carry out broadband amplitude calibration, thereby ensuing high flatness performance of the channel; the intermediate frequency link is provided with the band elimination equalizers, thereby solving the disadvantages of large amplitude fluctuation and large group delay fluctuation caused by the filter high rectangular coefficient; index requirements of small group delay and high filter rectangular coefficient can be well realized.
Description
technical field:
The utility model is relevant with broadband transmitting-receiving subassembly.
Background
technology:
Frequency conversion assembly is as the carrier of modulator-demodulator, and in microwave wireless communication field, in indispensable status, the indexs such as its spuious inhibition, inband flatness, group delay, Out-of-band rejection, phase noise become the principal element of system for restricting performance.Conventionally there is following problem in currently marketed broadband transmitting-receiving subassembly:
On intermediate-frequency circuit, there is no switch sets of equalizers.Because the frequency mixer in radio frequency link, high frequency filter, amplifier must bring amplitude injustice, cause whole passage flatness poor.
In circuit design, hinder equalizer without band.For the higher receive path of intermediate frequency Out-of-band rejection, for reaching higher filter Out-of-band rejection requirement, certainly will cause in midband that unevenness is large, Group Delay Ripple is also larger in band.
Above shortcoming directly causes traditional broadband transmitting-receiving subassembly cannot carry out normal communication in particular communication system.
utility model content:
The purpose of this utility model is to provide the C-band high-performance R-T unit that in a kind of wide-band, group delay is little, filter squareness factor is high, high, the spuious rejection ratio of passage flatness is high.
The utility model is achieved in that
Comprise transmission channel, receive path, the intermediate-freuqncy signal of 95～145MHz through the first switch 1 of transmission channel respectively with the first attenuator 2, the first positive slope equalizer 3, the first anti-slope equalizer 4 connects, the first attenuator 2, the first positive slope equalizer 3, the first anti-slope equalizer 4 is connected with second switch 5 respectively, and second switch 5 is the first band pass filter 6 through connecting successively, the first band resistance equalizer 7, the first frequency mixer 8, the second band pass filter 9, the first numerical-control attenuator 10, the first amplifier 11 is connected with the 3rd switch 12, the 3rd switch 12 respectively with the first coupler 13, the second frequency mixer 14 connects, and the second frequency mixer 14 is the second attenuator 15 through connecting successively, the 3rd band pass filter 16, the second amplifier 17, the second numerical-control attenuator 18, the 3rd amplifier 19 is connected with the first low pass filter 20, and the radiofrequency signal of receive path is the second low pass filter 21 through connecting successively, the 3rd attenuator 22, three-mixer 23, four-tape bandpass filter 24, the 4th amplifier 25 is connected with the 3rd numerical-control attenuator 26, the 3rd numerical-control attenuator 26, the second coupler 27 is connected with the 4th switch 28 respectively, and the 4th switch 28 is the 4th frequency mixer 29 through connecting successively, the 3rd low pass filter 30, the 5th amplifier 31, the 4th numerical-control attenuator 32 is connected with the 5th switch 33, the 5th switch 33 respectively with the 4th attenuator 34, the second positive slope equalizer 35, the second anti-slope equalizer 36 connects, the 4th attenuator 34, the second positive slope equalizer 35, the second anti-slope equalizer 36 is connected with the 6th switch 37 respectively, and the 6th switch 37 is successively through the 6th amplifier 38, the second band resistance equalizer 39 is connected with the 5th band pass filter 40.
The utility model provides the C-band high-performance R-T unit that in a kind of wide-band, group delay is little, filter squareness factor is high, high, the spuious rejection ratio of passage flatness is high.
The utility model is by adopting following methods to realize that in wide-band, group delay is little, filter squareness factor is high, the high module performance of high, the spuious rejection ratio of passage flatness.
Adopt intermediate frequency/high frequency amplitude-frequency characteristic matching scheme: in middle frequency link, add switch amplitude calibration device group, comprise straight-throughly, positive slope equalizer, anti-slope equalizer, can be for the different amplitude-frequency characteristics of passage HFS, each frequency band is selected to suitable calibration path, realize complementary coupling; Thereby guarantee the high performance of passage flatness.
High frequency filter adopts the microstrip filter that suspends, filter printed board below cavity is module housing itself, and filter printed board and all the other microwave faces are in same plane, thoroughly solve the parasitic parameter problem that traditional cavity body filter ground connection is far brought, thereby passage flatness is not suddenlyd change; Adopt numerical-control attenuator to carry out band amplitude calibration simultaneously; Guarantee the high performance of passage flatness.
In middle frequency link, adopt band resistance equalizer, make up the defect that amplitude fluctuation is large, Group Delay Ripple is large of bringing due to the high squareness factor of filter; Well realize the index request that group delay is little, filter squareness factor is high.
The utility model, by intermediate frequency/high frequency amplitude-frequency characteristic matching technique, digital control technology, radio-frequency channel designing technique and the cavity body structure designing technique of integrated use novelty, has improved product advance.In the wide-band of realizing, group delay is little, filter squareness factor is high, high, the spuious rejection ratio advantages of higher of passage flatness.
accompanying drawing explanation:
Fig. 1 is transmission channel circuit diagram of the present utility model.
Fig. 2 is receive path circuit diagram of the present utility model.
embodiment:
The utility model has following device:
1 switch one (HMC241), 2 attenuators one (R), 3 positive slope equalizers one (RLC), 4 anti-slope equalizers one (RLC), 5 switches two (HMC241), 6 band pass filters one (95～145MHz), 7 band resistance equalizers one (RLC), 8 frequency mixers one (SYM30DHW), 9 band pass filters two (1325～1375MHz), 10 numerical-control attenuators one (HMC539), 11 amplifiers one (TQP3M9008), 12 switches three (HMC194), 13 couplers one (R), 14 frequency mixers two (HMC787), 15 attenuators two (R), 16 band pass filters three (4400～5000MHz), 17 amplifiers two (SKY65017), 18 numerical-control attenuators two (HMC424), 19 amplifiers three (MGA30789), 20 low pass filters one (LFCN5800), 21 low pass filters two (LFCN5800), 22 attenuators three (R), 23 frequency mixers three (HMC787), 24 band pass filters four (1325～1375MHz), 25 amplifiers four (TQP3M9028), 26 numerical-control attenuators three (HMC539), 27 couplers two (R), 28 switches four (HMC194), 29 frequency mixers four (SYM30DHW), 30 low pass filters three (LFCN320), 31 amplifiers five (ERA-3SM+), 32 numerical-control attenuators four (HMC472), 33 switches five (HMC241), 34 attenuators four (R), 35 positive slope equalizers two (RLC), 36 anti-slope equalizers two (RLC), 37 switches six (HMC241), 38 amplifiers six (ERA-4SM+), 39 band resistance equalizers two (RLC), 40 band pass filters five (95～145MHz)
The intermediate-freuqncy signal of 95～145MHz through the first switch 1 of transmission channel respectively with the first attenuator 2, the first positive slope equalizer 3, the first anti-slope equalizer 4 connects, the first attenuator 2, the first positive slope equalizer 3, the first anti-slope equalizer 4 is connected with second switch 5 respectively, and second switch 5 is the first band pass filter 6 through connecting successively, the first band resistance equalizer 7, the first frequency mixer 8, the second band pass filter 9, the first numerical-control attenuator 10, the first amplifier 11 is connected with the 3rd switch 12, the 3rd switch 12 respectively with the first coupler 13, the second frequency mixer 14 connects, and the second frequency mixer 14 is the second attenuator 15 through connecting successively, the 3rd band pass filter 16, the second amplifier 17, the second numerical-control attenuator 18, the 3rd amplifier 19, the first low pass filter 20 connects, and the radiofrequency signal of receive path is the second low pass filter 21 through connecting successively, the 3rd attenuator 22, three-mixer 23, four-tape bandpass filter 24, the 4th amplifier 25 is connected with the 3rd numerical-control attenuator 26, the 3rd numerical-control attenuator 26, the second coupler 27 is connected with the 4th switch 28 respectively, and the 4th switch 28 is the 4th frequency mixer 29 through connecting successively, the 3rd low pass filter 30, the 5th amplifier 31, the 4th numerical-control attenuator 32 is connected with the 5th switch 33, the 5th switch 33 respectively with the 4th attenuator 34, the second positive slope equalizer 35, the second anti-slope equalizer 36 connects, the 4th attenuator 34, the second positive slope equalizer 35, the second anti-slope equalizer 36 is connected with the 6th switch 37 respectively, and the 6th switch 37 is successively through the 6th amplifier 38, the second band resistance equalizer 39 is connected with the 5th band pass filter 40.
Main circuit will comprise transmission channel, receive path.Transmitting, receive path adopt switching over local oscillator, realize transmitting-receiving time-sharing multiplex.
It is straight-through that the intermediate-freuqncy signal of transmission channel: 95～145MHz selects a switch to select through two HMC241 tetra-, positive slope equalizer, anti-slope equalizer, after carrying out frequency spectrum conditioning, 95～145MHz band pass filter enters again frequency mixer SYM30DHW, local oscillator is 1470MHz, an intermediate-freuqncy signal of mixing output 1325～1375MHz, obtain useful signal by 1325～1375MHz band-pass filter again, enter HMC539 and carry out amplitude calibration, be amplified into two frequency mixer HMC787 through TQP3M9008, local oscillator is the frequency hopping of 5750～6350MHz, mixing obtains the radiofrequency signal of 4400～5000MHz, after the high frequency microstrip filter filtering of 4400～5000MHz, by amplifier, SKY65017 amplifies, the attenuator HMC424 control that decays, amplifier MGA30789 amplifies, finally obtain radio frequency output by LFCN5800 filtering.
The radiofrequency signal of receive path: 4400～5000MHz is amplified through MGA30789, after LFCN5800 filtering, enter frequency mixer HMC787, local oscillator is the frequency hopping of 5750～6350MHz, mixing obtains an intermediate-freuqncy signal of 1325～1375MHz, obtain useful signal by 1325～1375MHz band-pass filter, be amplified into HMC539 through TQP3M9028 and carry out amplitude calibration, enter two frequency mixer SYM30DHW, local oscillator is 1470MHz, two intermediate-freuqncy signals of mixing output 1325～1375MHz, after LFCN320 filtering, amplified by ERA-3SM+, the attenuator HMC472 control that decays, select a switch to select through two HMC241 tetra-more straight-through, positive slope equalizer, anti-slope equalizer, by amplifier, ERA-4SM+ amplifies, finally by the band resistance equalizer of crossing 95～145MHz, after band-pass filter, obtain intermediate frequency output.
Claims (1)
1.C wave band high-performance R-T unit, is characterized in that comprising transmission channel, receive path, the intermediate-freuqncy signal of 95～145MHz through first switch (1) of transmission channel respectively with the first attenuator (2), the first positive slope equalizer (3), the first anti-slope equalizer (4) connects, the first attenuator (2), the first positive slope equalizer (3), the first anti-slope equalizer (4) is connected with second switch (5) respectively, and second switch (5) is the first band pass filter (6) through connecting successively, the first band resistance equalizer (7), the first frequency mixer (8), the second band pass filter (9), the first numerical-control attenuator (10), the first amplifier (11) is connected with the 3rd switch (12), the 3rd switch (12) respectively with the first coupler (13), the second frequency mixer (14) connects, and the second frequency mixer (14) is the second attenuator (15) through connecting successively, the 3rd band pass filter (16), the second amplifier (17), the second numerical-control attenuator (18), the 3rd amplifier (19) is connected with the first low pass filter (20), and the radiofrequency signal of receive path is the second low pass filter (21) through connecting successively, the 3rd attenuator (22), three-mixer (23), four-tape bandpass filter (24), the 4th amplifier (25) is connected with the 3rd numerical-control attenuator (26), the 3rd numerical-control attenuator (26), the second coupler (27) is connected with the 4th switch (28) respectively, and the 4th switch (28) is the 4th frequency mixer (29) through connecting successively, the 3rd low pass filter (30), the 5th amplifier (31), the 4th numerical-control attenuator (32) is connected with the 5th switch (33), the 5th switch (33) respectively with the 4th attenuator (34), the second positive slope equalizer (35), the second anti-slope equalizer (36) connects, the 4th attenuator (34), the second positive slope equalizer (35), the second anti-slope equalizer (36) is connected with the 6th switch (37) respectively, and the 6th switch (37) is successively through the 6th amplifier (38), the second band resistance equalizer (39) is connected with the 5th band pass filter (40).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320753774.2U CN203691393U (en) | 2013-11-26 | 2013-11-26 | C wave band high performance transmit-receive device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320753774.2U CN203691393U (en) | 2013-11-26 | 2013-11-26 | C wave band high performance transmit-receive device |
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| Publication Number | Publication Date |
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| CN203691393U true CN203691393U (en) | 2014-07-02 |
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| CN201320753774.2U Expired - Fee Related CN203691393U (en) | 2013-11-26 | 2013-11-26 | C wave band high performance transmit-receive device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109347507A (en) * | 2018-10-29 | 2019-02-15 | 中国航空无线电电子研究所 | Broadband can configure C-band radio-frequency front-end |
| CN111224907A (en) * | 2019-11-21 | 2020-06-02 | 中电科仪器仪表有限公司 | Large-bandwidth broadband variable frequency link amplitude equalization method |
| CN113872633A (en) * | 2021-11-18 | 2021-12-31 | 中国航空无线电电子研究所 | UV wave band broadband reconfigurable transceiver |
| CN116131924A (en) * | 2023-04-13 | 2023-05-16 | 成都锐新科技有限公司 | C wave band ground channel system |
-
2013
- 2013-11-26 CN CN201320753774.2U patent/CN203691393U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109347507A (en) * | 2018-10-29 | 2019-02-15 | 中国航空无线电电子研究所 | Broadband can configure C-band radio-frequency front-end |
| CN111224907A (en) * | 2019-11-21 | 2020-06-02 | 中电科仪器仪表有限公司 | Large-bandwidth broadband variable frequency link amplitude equalization method |
| CN113872633A (en) * | 2021-11-18 | 2021-12-31 | 中国航空无线电电子研究所 | UV wave band broadband reconfigurable transceiver |
| CN116131924A (en) * | 2023-04-13 | 2023-05-16 | 成都锐新科技有限公司 | C wave band ground channel system |
| CN116131924B (en) * | 2023-04-13 | 2023-06-16 | 成都锐新科技有限公司 | C wave band ground channel system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140702 Termination date: 20151126 |