CN105281802A - Broad-band radio frequency universal receiving/transmitting unit suitable for radio station - Google Patents
Broad-band radio frequency universal receiving/transmitting unit suitable for radio station Download PDFInfo
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- CN105281802A CN105281802A CN201510866321.4A CN201510866321A CN105281802A CN 105281802 A CN105281802 A CN 105281802A CN 201510866321 A CN201510866321 A CN 201510866321A CN 105281802 A CN105281802 A CN 105281802A
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Abstract
The invention provides a broad-band radio frequency universal receiving/transmitting unit suitable for radio stations. The broad-band radio frequency universal receiving/transmitting unit comprises a broad-band universal radio frequency front end module (1), a broad-band radio frequency receiving front end module (2), a broad-band radio frequency amplification circuit module (3), a medium-frequency mixer and filter amplification circuit module (4), a multi-bandwidth medium-frequency filter module (5) and a medium-frequency amplification circuit module (6) which are combined into a whole. The broad-band radio frequency receiving front end module (2) comprises a broad-band radio frequency gain adjustment circuit (21) and a broad-band radio frequency tuning and amplifying circuit (22). The broad-band radio frequency amplification circuit module (3) comprises a power amplifier front end drive and impedance matching circuit (31), a power amplifier circuit (32) and an output matched filtering circuit (33). The multi-bandwidth medium-frequency filter module (5) comprises a multi-bandwidth filter circuit (51) and a gain compensating circuit (52). The universal united hardware structure is provided for the radio stations of different working frequency bands and information modulation modes, and therefore the system hardware size is reduced, and the system cost is reduced.
Description
Technical field
The present invention relates to a kind of radio frequency receipts/bill unit, particularly a kind of general receipts of wide-band radio frequency/bill unit being applicable to radio station.
Background technology
Along with the development of wireless communication technology, the mode of modulates information and working frequency range are all in continuous change, and single frequency band and special Wireless Telecom Equipment more and more can not meet the needs of people.So increasing wide-band wireless device is widely used in every field, complete the networking between different frequency range and different modulates information mode, data interaction, routing function.
Radio frequency receipts/bill unit is as the core in Wireless Telecom Equipment, in order to adapt to different working frequency range and modulates information mode, a system often has the radio frequency receipts/bill unit of the different modulates information mode of multiple different frequency range, system hardware often seems huge and too fat to move, and cost also remains high.
Summary of the invention
Object of the present invention is exactly to solve the problem, and provides a kind of radio frequency receipts/bill unit being applicable to the general wide-band of radio station.The hardware of different frequency range and different modulates information mode can be merged into a unified hardware configuration by it, thus reduces system hardware volume, reduces system cost.
In order to achieve the above object, the technical solution used in the present invention is:
A kind of general receipts of wide-band radio frequency/bill unit being applicable to radio station, comprises wide-band Versatile RF front-end module (1), wide-band receiver rf front-end module (2), wide band RF power amplifier circuit module (3), intermediate frequency mixing and filtering amplifying circuit module (4), the wide intermediate frequency filtering module (5) of multi-band and intermediate frequency amplifier circuit module (6).Wherein:
Described wide-band receiver rf front-end module (2) comprises again wide-band rf gain Circuit tuning (21) and wide-band tuned radio-frequency amplifying circuit (22), totally 2 parts.Wherein said wide-band rf gain Circuit tuning (21) adjusts to suitable size in order to the radiofrequency signal of being come in front end; Described wide-band tuned radio-frequency amplifying circuit (22) is in order to Linear Amplifer radiofrequency signal after filtering interfering;
Described wide band RF power amplifier circuit module (3) comprises again power amplifier front-end driven and impedance matching circuit (31), power amplifier circuit (32) and output matching filter circuit (33), totally 3 parts.Wherein said power amplifier front-end driven and impedance matching circuit (31) meet the level of power amplifier input and the input resistant matching of power amplifier in order to be amplified to transmitting; Described power amplifier circuit (32) is in order to be amplified to suitable power output by radiofrequency signal.The harmonic wave that described output matching filter circuit (33) transmits in order to output matching and the filtering of power amplifier.
Described multi-band wide intermediate frequency filtering module (5) comprises again the wide filter circuit of multi-band (51) and gain compensation circuit (52), totally 2 parts.The wide filter circuit of wherein said multi-band (51), in order to the switching filtering between different bandwidth signal, ensures that signal spectrum is pure; The gain difference that described gain compensation circuit (52) is brought in order to compensate each filter loss difference.
The basic design philosophy of the present invention comprises: the design of wide-band Versatile RF front-end, the design of wide-band receiver rf front-end modular design, wide band RF power amplifier circuit module, the design of intermediate frequency mixing and filtering amplification circuit module, the design of the wide intermediate frequency filtering modular design of multi-band, intermediate frequency amplifier circuit.
1, wide-band Versatile RF front-end module design: the general radio-frequency (RF) switch that adopts of conventional radio frequency front-end circuit receipts/Power Generation Road isolation carries out receiving/sending out switching or realizing isolation by circulator, radio frequency switch and circulator require high, and with certain Insertion Loss, considerable influence is had to reception and launching target, and this modular design adopts the just reverse-biased mode of diode to realize receiving/sending out isolation, volume is little, and Insertion Loss is little.
2, wide-band receiver rf front-end module design: receiver rf front-end design in the past or for fixed-bandwidth, or for fixed frequency, very flexible, work strip width.And the design adopts double-tuned filter to add the structure of low noise amplifier, when significantly suppressing radio-frequency front-end to disturb, ensure that radio-frequency front-end noise factor is enough low, to ensure the performance that receiver module is good.
3, wide band RF power amplifier circuit module design: wide band RF power amplifier working frequency range reaches 14 octaves, and linearity is high, and requires that power output is large.In order to reach designing requirement, the model that the present invention selects is D1016UK power amplifier tube, have employed and recommends with negative feedback mode to improve the broadband performance of power amplifier.
4, intermediate frequency mixing and filtering amplifying circuit module design: this module adopts the mode of conventional secondary mixing that radiofrequency signal is mixed to an intermediate frequency, is mixed to two intermediate frequencies again after filter and amplification.
5, multi-band wide intermediate frequency filtering module design: traditional intermediate frequency filtering bandwidth ratio is more fixing, in order to adapt to the transmission requirement of different bandwidth signal, devise the flexible switching of 3 kinds of conventional bandwidth filters, and gain balance has been done to the loss between different filter, in order to avoid affect the performance of back-end digital sample circuit.
6, intermediate frequency amplifier circuit module design: intermediate frequency is received circuit and be have employed the adjustment that traditional VGA amplifier realizes signal magnitude, and medium frequency electric generating road have employed adjustable attenuator and adds amplifier, realizes the size adjustment sending out intermediate-freuqncy signal.
The course of work of the present invention is: when being in accepting state, the radiofrequency signal of wide-band is through wide-band Versatile RF front-end module (1), then wide-band receiver rf front-end module (2) is entered, filtered radiofrequency signal enters after intermediate frequency mixing and filtering amplifying circuit module (4) carries out mixing and filtering and enters the wide intermediate frequency filtering module (5) of multi-band, finally enters to send into digital back-end after intermediate frequency amplifier circuit module (6) is amplified to desired value and process.When being in emission state, first the intermediate-freuqncy signal of coming from rear end enters intermediate frequency amplifier circuit module (6), then after entering the filtering of multi-band wide intermediate frequency filtering module (5), enter after intermediate frequency mixing and filtering amplifying circuit module (4) carries out mixing and filtering, finally enter wide band RF power amplifier circuit module (3), the radiofrequency signal of amplification is sent into antenna transmission by wide-band Versatile RF front-end module 1 and is gone out.
In a word, the present invention's tuned filter that radio-frequency front-end have employed wide-band when receiving achieves the reception of wide-band radiofrequency signal, then coordinates rear class receiving circuit, achieves high performance receiver; During transmission, have employed push-pull amplifier and add degenerative scheme and achieve have the good linearity within the scope of wide-band; Have employed compact structure design, also have good effectiveness at guarantee good heat radiating simultaneously; By above measure, achieve radio frequency receipts/bill unit and have that wide-band work, compact conformation, reliability are high, the feature such as good stability, function admirable.
Accompanying drawing explanation
Fig. 1 the present invention electricity theory diagram
Fig. 2 wide-band receiver rf front-end of the present invention module schematic diagram
Fig. 3 wide band RF power amplifier circuit module of the present invention schematic diagram
Fig. 4 multi-band of the present invention wide intermediate frequency filtering module schematic diagram
Symbol description in figure
1 is wide-band Versatile RF front-end module,
2 is wide-band receiver rf front-end modules,
3 is wide band RF power amplifier circuit modules,
4 is intermediate frequency mixing and filtering amplifying circuit modules,
5 is the wide intermediate frequency filtering modules of multi-band,
6 is intermediate frequency amplifier circuit modules.
21 is wide-band rf gain Circuit tunings,
22 is wide-band tuned radio-frequency amplifying circuits,
31 is power amplifier front-end driven and impedance matching circuit,
32 is power amplifier circuits,
33 is output matching filter circuits,
51 is the wide filter circuits of multi-band,
52 is gain compensation circuit.
Embodiment
Referring to shown in Fig. 1, Fig. 2, Fig. 3 and Fig. 4, is the specific embodiment of the invention.
Composition graphs 1, Fig. 2, Fig. 3 and Fig. 4 are visible: the present invention includes wide-band Versatile RF front-end module (1), wide-band receiver rf front-end module (2), wide band RF power amplifier circuit module (3), intermediate frequency mixing and filtering amplifying circuit module (4), the wide intermediate frequency filtering module (5) of multi-band, intermediate frequency amplifier circuit module (6) combine formation entirety, wherein:
2nd pin of adjustable attenuator N2 of wide-band rf gain Circuit tuning (21) is connected with the 1st pin of the double diode N60 for limited amplitude protection in described wide-band receiver rf front-end module (2), continues to be connected with the 2nd pin of the radio-frequency (RF) switch U17 in wide-band tuned radio-frequency amplifying circuit (22); And the 1st pin of U17 is connected with the 1st pin of tuned filter N3, and the 2nd pin of N3 is connected with the 3rd pin of radio-frequency (RF) switch U1, then the 1st pin of U1 is connected with the 1st pin of low noise amplifier N4, and then the 2nd pin of N4 is connected with the 2nd pin of radio-frequency (RF) switch U2, and the 1st pin of U2 is connected with the 1st pin of tuned filter N5.
Described wide band RF power amplifier circuit module (3) comprises again power amplifier front-end driven and impedance matching circuit (31), power amplifier circuit (32), output matching filter circuit (33); Wherein driving amplifier N29 output is connected with the 1st pin of line transformer T1 through electric capacity C1, the 3rd pin ground connection of T1,2nd pin and the indirect tunable capacitor C2 of the 4th pin, 2nd foot meridian capacitor C3 is connected with the 1st pin of line transformer T2,4th foot meridian capacitor C4 is connected with the 3rd pin of line transformer T3,3rd pin of T2 and the 1st pin docking of T3, and be connected with electric capacity C11 through resistance R3.2nd pin of T2 docks with the 2nd pin of T3, and connect with the 4th pin of power amplifier U1,4th pin of T2 and the 4th pin docking of T3, and be connected to the 5th pin of power amplifier N1, be connected to a tunable capacitor C5 between the 4th pin of N1 and the 5th pin, feedback branch R1, C6 are connected to the 1st of N1 the, between 6 pin, feedback branch R2, C7 are connected to the 2nd of U1 the, between 5 pin, the L1 of coupling is connected to, C8 between 1st pin of N1 and the 1st pin of line transformer T4.The L2 of coupling is connected to, C9 between 2nd pin of N1 and the 3rd pin of line transformer T4.Direct current biasing inductance L 3 is connected between L1, C8.Direct current biasing inductance L 4 is connected between L2, C9.The 1st of T4, is connected to matching capacitance C10 between 3 pin, and the 4th pin of T4 meets diode V1, V10, V14 simultaneously.V1 meets diode V2 simultaneously, V4, V6, V8.V2, V4, V6, V8 connect the input of low pass filter filter1, filter2, filter3, filter4 respectively.The output of low pass filter filter1, filter2, filter3, filter4 meets diode V3, V5, V7, V9 respectively and then connects with diode V19, and V10, V14 connects respectively and connects the input of low pass filter filter5, filter6 after V11, V15.The output of filter5, filter6 meets V12 respectively, V13 and V16, V17, and last V13, V17, V19 meet capacitance C12.
Described multi-band wide intermediate frequency filtering module (5) comprises again the wide filter circuit of multi-band (51), gain compensation circuit (52), wherein the 3rd pin of radio-frequency (RF) switch U53 is connected with the 1st pin of filter N50, 2nd pin of N50 connects the 2nd pin of radio-frequency (RF) switch U50, 2nd pin of U53 connects the 1st pin of radio-frequency (RF) switch U54, 3rd pin of U54 connects the 1st pin of amplifier N53, 2nd pin of U54 connects the 2nd pin of amplifier N54, 2nd pin of N53 connects the 2nd pin of radio-frequency (RF) switch U52, 1st pin of N54 connects the 3rd pin of radio-frequency (RF) switch U52, 1st pin of U52 docks with the 1st pin of radio-frequency (RF) switch U51, 3rd pin of U51 connects the 1st pin of filter N51, 2nd pin of N51 connects the 2nd pin of radio-frequency (RF) switch U55, 2nd pin of U51 connects the 1st pin of filter N52, 2nd pin of N52 connects the 3rd pin of U55, 1st pin of U55 connects the 3rd pin of U50.
What deserves to be explained is the main devices model selected by the present invention: U1, U2 and U17 are HMC595E; U50, U51, U52, U53 and U54 are MASW0178; N1 is D1016UK; N3 is bounce frequency filter BCD-Y3; N4 is WHM003; N5 is bounce frequency filter BCD-Y5; N29 is RFHA1003DS; N53 and N54 is SGA4386; N51 is 21.4MHz crystal filter; N52 is 21.4MHzLC filter; N60 is BAS216.
Above embodiment, is only preferred embodiment of the present invention, in order to technical characteristic of the present invention and exploitativeness to be described; Simultaneously above description, should understand for being familiar with those skilled in the art and being implemented, therefore other is not departing from change or the modification of the equivalence completed under disclosed prerequisite, all should be included among right of the present invention.
Claims (4)
1. the wide-band radio frequency general receipts/bill unit being applicable to radio station includes wide-band Versatile RF front-end module (1), wide-band receiver rf front-end module (2), wide band RF power amplifier circuit module (3), intermediate frequency mixing and filtering amplifying circuit module (4), the wide intermediate frequency filtering module (5) of multi-band, intermediate frequency amplifier circuit module (6) combine formation entirety, it is characterized in that:
Described wide-band receiver rf front-end module (2) comprises again wide-band rf gain Circuit tuning (21) and wide-band tuned radio-frequency amplifying circuit (22), totally 2 parts.Wherein said wide-band rf gain Circuit tuning (21) adjusts to suitable size in order to the radiofrequency signal of being come in front end; Described wide-band tuned radio-frequency amplifying circuit (22) is in order to Linear Amplifer radiofrequency signal after filtering interfering;
Described wide band RF power amplifier circuit module (3) comprises again power amplifier front-end driven and impedance matching circuit (31), power amplifier circuit (32) and output matching filter circuit (33), totally 3 parts.Wherein said power amplifier front-end driven and impedance matching circuit (31) meet the level of power amplifier input and the input resistant matching of power amplifier in order to be amplified to transmitting; Described power amplifier circuit (32) is in order to be amplified to suitable power output by radiofrequency signal.The harmonic wave that described output matching filter circuit (33) transmits in order to output matching and the filtering of power amplifier.
Described multi-band wide intermediate frequency filtering module (5) comprises again the wide filter circuit of multi-band (51) and gain compensation circuit (52), totally 2 parts.The wide filter circuit of wherein said multi-band (51), in order to the switching filtering between different bandwidth signal, ensures that signal spectrum is pure; The gain difference that described gain compensation circuit (52) is brought in order to compensate each filter loss difference.
2. be applicable to the general receipts of the wide-band radio frequency/bill unit of radio station as claimed in claim 1, it is characterized in that:
2nd pin of adjustable attenuator N2 of wide-band rf gain Circuit tuning (21) is connected with the 1st pin of the double diode N60 for limited amplitude protection in described wide-band receiver rf front-end module (2), continues to be connected with the 2nd pin of the radio-frequency (RF) switch U17 in wide-band tuned radio-frequency amplifying circuit (22); And the 1st pin of U17 is connected with the 1st pin of tuned filter N3, and the 2nd pin of N3 is connected with the 1st pin of radio-frequency (RF) switch U1, then the 3rd pin of U1 is connected with the 1st pin of low noise amplifier N4, and then the 2nd pin of N4 is connected with the 2nd pin of radio-frequency (RF) switch U2, and the 1st pin of U2 is connected with the 1st pin of tuned filter N5.
3., as claim 1 is applicable to the general receipts of the wide-band radio frequency/bill unit of radio station, it is characterized in that:
Described wide band RF power amplifier circuit module (3) comprises again power amplifier front-end driven and impedance matching circuit (31), power amplifier circuit (32), output matching filter circuit (33); Wherein driving amplifier N29 output is connected with the 1st pin of line transformer T1 through electric capacity C1, the 3rd pin ground connection of T1,2nd pin and the indirect tunable capacitor C2 of the 4th pin, 2nd foot meridian capacitor C3 is connected with the 1st pin of line transformer T2,4th foot meridian capacitor C4 is connected with the 3rd pin of line transformer T3,3rd pin of T2 and the 1st pin docking of T3, and be connected with electric capacity C11 through resistance R3.2nd pin of T2 docks with the 2nd pin of T3, and connect with the 4th pin of power amplifier N1,4th pin of T2 and the 4th pin docking of T3, and be connected to the 5th pin of power amplifier N1, be connected to a tunable capacitor C5 between the 4th pin of N1 and the 5th pin, feedback branch R1, C6 are connected to the 1st of N1 the, between 6 pin, feedback branch R2, C7 are connected to the 2nd of N1 the, between 5 pin, the L1 of coupling is connected to, C8 between 1st pin of N1 and the 1st pin of line transformer T4.The L2 of coupling is connected to, C9 between 2nd pin of N1 and the 3rd pin of line transformer T4.Direct current biasing inductance L 3 is connected between L1, C8.Direct current biasing inductance L 4 is connected between L2, C9.The 1st of T4, is connected to matching capacitance C10 between 3 pin, and the 4th pin of T4 meets diode V1, V10, V14 simultaneously.V1 meets diode V2 simultaneously, V4, V6, V8.V2, V4, V6, V8 connect the input of low pass filter filter1, filter2, filter3, filter4 respectively.The output of low pass filter filter1, filter2, filter3, filter4 meets diode V3, V5, V7, V9 respectively and then connects with diode V19, and V10, V14 connects respectively and connects the input of low pass filter filter5, filter6 after V11, V15.The output of filter5, filter6 meets V12 respectively, V13 and V16, V17, and last V13, V17, V19 meet capacitance C12.
4., as claim 1 is applicable to the general receipts of the wide-band radio frequency/bill unit of radio station, it is characterized in that:
Described multi-band wide intermediate frequency filtering module (5) comprises again the wide filter circuit of multi-band (51), gain compensation circuit (52), wherein the 3rd pin of radio-frequency (RF) switch U53 is connected with the 1st pin of filter N50, 2nd pin of N50 connects the 2nd pin of radio-frequency (RF) switch U50, 2nd pin of U53 connects the 1st pin of radio-frequency (RF) switch U54, 3rd pin of U54 connects the 1st pin of amplifier N53, 2nd pin of U54 connects the 2nd pin of amplifier N54, 2nd pin of N53 connects the 2nd pin of radio-frequency (RF) switch U52, 1st pin of N54 connects the 3rd pin of radio-frequency (RF) switch U52, 1st pin of U52 docks with the 1st pin of radio-frequency (RF) switch U51, 3rd pin of U51 connects the 2nd pin of filter N51, 1st pin of N51 connects the 2nd pin of radio-frequency (RF) switch U55, 2nd pin of U51 connects the 1st pin of filter N52, 2nd pin of N52 connects the 3rd pin of U55, 1st pin of U55 connects the 3rd pin of U50.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510866321.4A CN105281802A (en) | 2015-11-30 | 2015-11-30 | Broad-band radio frequency universal receiving/transmitting unit suitable for radio station |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510866321.4A CN105281802A (en) | 2015-11-30 | 2015-11-30 | Broad-band radio frequency universal receiving/transmitting unit suitable for radio station |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105871408A (en) * | 2016-03-31 | 2016-08-17 | 青岛海信电器股份有限公司 | Front-end circuit of radio-frequency chip and signal transmission method |
| CN106209139A (en) * | 2016-08-25 | 2016-12-07 | 武汉中元通信股份有限公司 | Plug-in wireless communication interface based on VHF frequency range controls card |
| CN106685467A (en) * | 2017-01-04 | 2017-05-17 | 电子科技大学 | Double-octave broadband high-efficiency power amplifier |
| CN107911092A (en) * | 2017-10-10 | 2018-04-13 | 天津大学 | A kind of radio-frequency emission front-end circuit of broadband high linearity |
| CN110824507A (en) * | 2019-11-27 | 2020-02-21 | 中国科学院微小卫星创新研究院 | Simulator of upper note receiving processor of navigation satellite |
| CN112290973A (en) * | 2020-10-23 | 2021-01-29 | 国信军创(岳阳)六九零六科技有限公司 | Combiner |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201571052U (en) * | 2010-01-12 | 2010-09-01 | 陕西龙腾通讯科技有限责任公司 | Wideband radio intermediate-frequency transceiver |
| CN202334493U (en) * | 2011-10-26 | 2012-07-11 | 武汉中元通信股份有限公司 | High speed frequency hopping wideband frequency synthesizer |
| CN202395728U (en) * | 2011-10-31 | 2012-08-22 | 武汉中元通信股份有限公司 | Broadband high power amplifier |
| CN202679353U (en) * | 2012-05-17 | 2013-01-16 | 天津里外科技有限公司 | A mobile terminal radio frequency front-end transceiver equipped with a self-adaptive broadband oscillator |
| CN103117768A (en) * | 2013-01-25 | 2013-05-22 | 中国科学院微电子研究所 | Wireless transceiver |
| CN205430223U (en) * | 2015-11-30 | 2016-08-03 | 武汉中元通信股份有限公司 | General receipts of wide band section radio frequency / bill unit suitable for radio station |
-
2015
- 2015-11-30 CN CN201510866321.4A patent/CN105281802A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201571052U (en) * | 2010-01-12 | 2010-09-01 | 陕西龙腾通讯科技有限责任公司 | Wideband radio intermediate-frequency transceiver |
| CN202334493U (en) * | 2011-10-26 | 2012-07-11 | 武汉中元通信股份有限公司 | High speed frequency hopping wideband frequency synthesizer |
| CN202395728U (en) * | 2011-10-31 | 2012-08-22 | 武汉中元通信股份有限公司 | Broadband high power amplifier |
| CN202679353U (en) * | 2012-05-17 | 2013-01-16 | 天津里外科技有限公司 | A mobile terminal radio frequency front-end transceiver equipped with a self-adaptive broadband oscillator |
| CN103117768A (en) * | 2013-01-25 | 2013-05-22 | 中国科学院微电子研究所 | Wireless transceiver |
| CN205430223U (en) * | 2015-11-30 | 2016-08-03 | 武汉中元通信股份有限公司 | General receipts of wide band section radio frequency / bill unit suitable for radio station |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105871408A (en) * | 2016-03-31 | 2016-08-17 | 青岛海信电器股份有限公司 | Front-end circuit of radio-frequency chip and signal transmission method |
| CN105871408B (en) * | 2016-03-31 | 2019-02-26 | 青岛海信电器股份有限公司 | A kind of method of front-end circuit and the signal transmission of radio frequency chip |
| CN106209139A (en) * | 2016-08-25 | 2016-12-07 | 武汉中元通信股份有限公司 | Plug-in wireless communication interface based on VHF frequency range controls card |
| CN106209139B (en) * | 2016-08-25 | 2021-01-05 | 武汉中元通信股份有限公司 | Plug-in wireless communication interface control card based on VHF frequency band |
| CN106685467A (en) * | 2017-01-04 | 2017-05-17 | 电子科技大学 | Double-octave broadband high-efficiency power amplifier |
| CN107911092A (en) * | 2017-10-10 | 2018-04-13 | 天津大学 | A kind of radio-frequency emission front-end circuit of broadband high linearity |
| CN110824507A (en) * | 2019-11-27 | 2020-02-21 | 中国科学院微小卫星创新研究院 | Simulator of upper note receiving processor of navigation satellite |
| CN112290973A (en) * | 2020-10-23 | 2021-01-29 | 国信军创(岳阳)六九零六科技有限公司 | Combiner |
| CN112290973B (en) * | 2020-10-23 | 2024-07-09 | 湖南六九零六信息科技股份有限公司 | Combiner |
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Application publication date: 20160127 |