CN205283742U - Four ways output microwave frequency conversion circuit and microwave frequency conversion ware - Google Patents
Four ways output microwave frequency conversion circuit and microwave frequency conversion ware Download PDFInfo
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- CN205283742U CN205283742U CN201521095784.7U CN201521095784U CN205283742U CN 205283742 U CN205283742 U CN 205283742U CN 201521095784 U CN201521095784 U CN 201521095784U CN 205283742 U CN205283742 U CN 205283742U
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Abstract
The utility model is suitable for a satellite television field especially relates to a four ways output microwave frequency conversion circuit and microwave frequency conversion ware. The utility model discloses an in the embodiment, four ways output microwave frequency conversion circuit includes four amplifiers, two band pass filter, a first detector, four diodes and four stabilivolts, the amplifier carries on respectively exporting to after the two -stage is enlargied to the vertical polarisation signal and the horizontal polarisation signal of satellite transmission band pass filter, band pass filter is right the vertical polarisation signal with the horizontal polarisation signal carries out exporting to behind the frequency selection first detector, the first detector will the vertical polarisation signal with the horizontal polarisation signal carries out the signal of the required frequency channel of output satellite receiver after the mixing respectively with local oscillator frequency, circuit structure is simple, practices thrift the cost.
Description
Technical field
This utility model belongs to satellite television field, particularly relates to a kind of four tunnel output microwave frequency changer circuit and microwave converters.
Background technology
Microwave converter is indispensable device in satellite television receiving system. Microwave converter generally comprises frontend amplifying circuit, filter circuit, mixting circuit, IF amplifier circuit and power module, and the small-signal that Ku wave band (10.7GHz��12.75GHz) satellite transmission gets off can be amplified, filter the intermediate-freuqncy signal (950MHz��2150MHz) required for output satellite receiver after being mixed with local frequency therein again by it.
Four general in the market tunnel output microwave converters are made up of six low-noise amplifiers, four band filters, two local oscillators, two resonators, four frequency mixers, eight intermediate frequency amplifiers, four manostat, two switching chips, a power supply chip and four diodes, circuit structure is complicated, production cost is high, and material cost is high.
Utility model content
The purpose of this utility model embodiment is in that to provide a kind of four tunnel output microwave frequency changer circuits, it is intended to solving four traditional tunnel output microwave converter circuit structures complicated, production cost is high, the problem that material cost is high.
This utility model embodiment is achieved in that a kind of four tunnel output microwave frequency changer circuits, each outfan of described four tunnel output microwave frequency changer circuits respectively connect a DVB, and described four tunnel output microwave frequency changer circuits include:
Receive the vertical polarization signal of satellite launch and described vertical polarization signal is carried out the first amplifier of first order amplification;
Input is connected with the outfan of described first amplifier, and described vertical polarization signal carries out the second amplifier of second level amplification;
Input is connected with the outfan of described second amplifier, and described vertical polarization signal carries out the first band filter of frequency selection;
Receive the horizontal polarization signals of satellite launch and described horizontal polarization signals is carried out the 3rd amplifier of first order amplification;
Input is connected with the outfan of described 3rd amplifier, and described horizontal polarization signals carries out the 4th amplifier of second level amplification;
Input is connected with the outfan of described 4th amplifier, and described horizontal polarization signals carries out the second band filter of frequency selection;
First input end and the second input are connected with the outfan of described first band filter and the outfan of the second band filter respectively, produce local frequency, and described vertical polarization signal and described horizontal polarization signals are carried out with described local frequency respectively the frequency mixer being mixed; And
Four diodes and four stabilivolts;
The input of described four stabilivolts is respectively connected with a DVB, and the outfan of described four stabilivolts is connected with the positive pole of four diodes respectively, the negative pole of four diodes be connected to the power end of described frequency mixer altogether.
Further, described four tunnel output microwave frequency changer circuits also include:
Crystal oscillator Y;
The two ends of described crystal oscillator Y are all connected with described frequency mixer, and described crystal oscillator Y and described frequency mixer produce required double; two local frequencies after carrying out frequency multiplication.
Further, described couple of local frequency respectively 9.75GHz and 10.6GHz.
Further, described first amplifier adopts metal-oxide-semiconductor Q1, described second amplifier to adopt metal-oxide-semiconductor Q2, described 3rd amplifier to adopt metal-oxide-semiconductor Q3, and described 4th amplifier adopts metal-oxide-semiconductor Q4;
The grid of described metal-oxide-semiconductor Q1 connects described frequency mixer, the drain electrode of described metal-oxide-semiconductor Q1 connects the grid of described metal-oxide-semiconductor Q2 and described frequency mixer simultaneously, the grid of described metal-oxide-semiconductor Q2 connects described frequency mixer, the drain electrode of described metal-oxide-semiconductor Q2 connects the input of described first band filter and described frequency mixer simultaneously, the grid of described metal-oxide-semiconductor Q3 connects described frequency mixer, the drain electrode of described metal-oxide-semiconductor Q3 connects the grid of described metal-oxide-semiconductor Q4 and described frequency mixer simultaneously, the grid of described metal-oxide-semiconductor Q4 connects described frequency mixer, the drain electrode of described metal-oxide-semiconductor Q4 connects the input of described second band filter and described frequency mixer simultaneously.
Further, described frequency mixer adopts mixing chip U5, the first passage first grid biasing foot 1A_GATE and first passage the first drain bias foot 1A_DRAIN of described mixing chip U5 connects grid and the drain electrode of described metal-oxide-semiconductor Q1 respectively, the first passage second grid biasing foot 2A_GATE and first passage the second drain bias foot 2A_DRAIN of described mixing chip U5 connects grid and the drain electrode of described metal-oxide-semiconductor Q2 respectively, the second channel first grid biasing foot 1B_GATE and second channel the first drain bias foot 1B_DRAIN of described mixing chip U5 connects grid and the drain electrode of described metal-oxide-semiconductor Q3 respectively, the second channel second grid biasing foot 2B_GATE and second channel the second drain bias foot 2B_DRAIN of described mixing chip U5 connects grid and the drain electrode of described metal-oxide-semiconductor Q4 respectively, the first radiofrequency signal input pin A_RFIN and the second radiofrequency signal input pin B_RFIN of described mixing chip U5 connect the first band filter and the outfan of described second band filter respectively.
Further, described four tunnel output microwave frequency changer circuits also include:
Resistance R1, resistance R2, resistance R3, resistance R4, filter capacitor C1, filter capacitor C2, filter capacitor C3 and filter capacitor C4;
The first signal output pin IFOUT1 of four outfans respectively described mixing chip U5 of described four tunnel output microwave frequency changer circuits, secondary signal output pin IFOUT2, 3rd signal output pin IFOUT3 and the four signal output pin IFOUT4, the first signal output pin IFOUT1 of described mixing chip U5, secondary signal output pin IFOUT2, 3rd signal output pin IFOUT3 and the four signal output pin IFOUT4 is respectively through described filter capacitor C1, described filter capacitor C2, described filter capacitor C3 and described filter capacitor C4 and one DVB connect, first polarity of described mixing chip U5 selects foot VTIF1, second polarity selects foot VTIF2, 3rd polarity selects foot VTIF3 and quadripolarity to select foot VTIF4 respectively through described resistance R1, described resistance R2, described resistance R3 and described resistance R4 and one DVB connect.
The another object of this utility model embodiment is in that to provide a kind of microwave converter, and described microwave converter includes four tunnel output microwave frequency changer circuits as described above.
In embodiment of the present utility model, described four tunnel output microwave frequency changer circuits include four amplifiers, two band filters, one frequency mixer, four diodes and four stabilivolts, the vertical polarization signal of satellite launch and horizontal polarization signals are carried out after two-stage amplification output to described band filter by described amplifier respectively, described band filter exports to frequency mixer after described vertical polarization signal and described horizontal polarization signals are carried out frequency selection, described frequency mixer described vertical polarization signal and described horizontal polarization signals are mixed with local frequency respectively after the signal of frequency range needed for output satellite receiver, circuit structure is simple, save cost.
Accompanying drawing explanation
Fig. 1 is the function structure chart of the four tunnel output microwave frequency changer circuits that this utility model embodiment provides;
Fig. 2 is the circuit structure diagram of the four tunnel output microwave frequency changer circuits that this utility model embodiment provides.
Detailed description of the invention
In order to make the purpose of this utility model, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, this utility model is further elaborated. Should be appreciated that specific embodiment described herein is only in order to explain this utility model, be not used to limit this utility model.
Fig. 1 illustrates that four tunnels that this utility model embodiment provides export the modular structure of microwave frequency changer circuits, for the ease of illustrating, illustrate only the part relevant to this utility model embodiment.
A kind of four tunnel output microwave frequency changer circuits, each outfan of described four tunnel output microwave frequency changer circuits respectively connects a DVB, and described four tunnel output microwave frequency changer circuits include:
Receive the vertical polarization signal of satellite launch and described vertical polarization signal is carried out the first amplifier 1 of first order amplification;
Input is connected with the outfan of described first amplifier, and described vertical polarization signal carries out the second amplifier 2 of second level amplification;
Input is connected with the outfan of described second amplifier, and described vertical polarization signal carries out the first band filter 5 of frequency selection;
Receive the horizontal polarization signals of satellite launch and described horizontal polarization signals is carried out the 3rd amplifier 3 of first order amplification;
Input is connected with the outfan of described 3rd amplifier, and described horizontal polarization signals carries out the 4th amplifier 4 of second level amplification;
Input is connected with the outfan of described 4th amplifier, and described horizontal polarization signals carries out the second band filter 6 of frequency selection;
First input end and the second input are connected with the outfan of described first band filter and the outfan of the second band filter respectively, produce local frequency, and described vertical polarization signal and described horizontal polarization signals are carried out with described local frequency respectively the frequency mixer 7 being mixed; And
Four diodes and four stabilivolts;
The input of described four stabilivolts is respectively connected with a DVB, described DVB provides 13V and 18V voltage for described stabilivolt, the outfan of described four stabilivolts is connected with the positive pole of four diodes respectively, the negative pole of four diodes be connected to the power end of described frequency mixer altogether.
Every satellite generally has 24 television channels, channel spacing is 20MHz, and the bandwidth of satellite is 27MHz, explanation has component frequency to overlap, for making full use of these channels, and avoid interfering of adjacent channel, generally channel order is separated by single, double, respectively with the electromagnetic radiation of different polarization modes, i.e. vertical polarization and horizontal polarization. And provide 13/18V two kind switchable voltages to determine DVB it is desirable that horizontal polarization signals or vertical polarization signal from receiver to described four tunnels output microwave frequency changer circuits by satellite. When the setting of the programs of DVB is horizontal polarization, DVB provides 18V voltage to described four tunnel output microwave frequency changer circuits, when the setting of the programs of DVB is vertical polarization, DVB provides 13V voltage to described four tunnel output microwave frequency changer circuits, described four road microwave frequency changer circuit identification running voltages, receive corresponding polarized signal.
Fig. 2 illustrates that four tunnels that this utility model embodiment provides export the circuit structure of microwave frequency changer circuits, for the ease of illustrating, illustrate only the part relevant to this utility model embodiment.
As an embodiment of the present utility model, described four tunnel output microwave frequency changer circuits also include:
Crystal oscillator Y;
The two ends of crystal oscillator Y are all connected with frequency mixer 7, and crystal oscillator Y and frequency mixer 7 produce required double; two local frequencies after carrying out frequency multiplication.
As an embodiment of the present utility model, described couple of local frequency respectively 9.75GHz and 10.6GHz.
In the present embodiment, because the frequency range of Ku wave band is 10.7GHz��12.75GHz, its bandwidth is more than 2000MHz, beyond the frequency range (950MHz��2150MHz) of DVB. Receiving to reach full frequency band, Ku audio range frequency is divided into height two sections, low-frequency range is 10.7GHz��11.7GHz, and high band is 11.7GHz��12.75GHz. Therefore double; two local frequencies respectively 9.75GHz and 10.6GHz that frequency mixer 7 to produce, the frequency received by such DVB is:
Low-frequency range: 10.7GHz-9.75GHz=0.95GHz, 11.7GHz-9.75GHz=1.95GHz;
High band: 11.7GHz-10.6GHz=1.1GHz, 12.75GHz-10.6GHz=2.15GHz.
Namely the frequency that DVB receives is within the scope of 950MHz��2150MHz.
In the present embodiment, DVB to described four tunnels output microwave frequency changer circuits provide 13/18V running voltage on superposition have 22KHz pulse envelope signal, 22KHz pulse signal is produced by frequency mixer 7, input to DVB, DVB output 0/22KHz pulse signal selects frequency mixer 7 to be produce low local oscillator or high local oscillator respectively, can also be used with the 13V/18V voltage of DVB offer to switch horizontal polarization signals or vertical polarization signal, it is achieved Ku wave band program Whole frequency band receives simultaneously.
As an embodiment of the present utility model, the first amplifier 1 adopts metal-oxide-semiconductor Q1, and the second amplifier 2 adopts metal-oxide-semiconductor Q2, and the 3rd amplifier 3 adopts metal-oxide-semiconductor Q3, and the 4th amplifier 4 adopts metal-oxide-semiconductor Q4;
The grid of metal-oxide-semiconductor Q1 connects frequency mixer 7, the drain electrode of metal-oxide-semiconductor Q1 connects grid and the frequency mixer 7 of metal-oxide-semiconductor Q2 simultaneously, the grid of metal-oxide-semiconductor Q2 connects frequency mixer 7, the drain electrode of metal-oxide-semiconductor Q2 connects input and the frequency mixer 7 of the first band filter 5 simultaneously, the grid of metal-oxide-semiconductor Q3 connects frequency mixer 7, the drain electrode of metal-oxide-semiconductor Q3 connects grid and the frequency mixer 7 of metal-oxide-semiconductor Q4 simultaneously, and the grid of metal-oxide-semiconductor Q4 connects frequency mixer 7, and the drain electrode of metal-oxide-semiconductor Q4 connects input and the frequency mixer 7 of the second band filter 6 simultaneously.
As an embodiment of the present utility model, first amplifier the 1, second amplifier the 2, the 3rd amplifier 3 and the 4th amplifier 4 can also adopt audion.
As an embodiment of the present utility model, frequency mixer 7 adopts mixing chip U5, the first passage first grid biasing foot 1A_GATE and first passage the first drain bias foot 1A_DRAIN of mixing chip U5 connects grid and the drain electrode of metal-oxide-semiconductor Q1 respectively, the first passage second grid biasing foot 2A_GATE and first passage the second drain bias foot 2A_DRAIN of mixing chip U5 connects grid and the drain electrode of metal-oxide-semiconductor Q2 respectively, the second channel first grid biasing foot 1B_GATE and second channel the first drain bias foot 1B_DRAIN of mixing chip U5 connects grid and the drain electrode of metal-oxide-semiconductor Q3 respectively, the second channel second grid biasing foot 2B_GATE and second channel the second drain bias foot 2B_DRAIN of mixing chip U5 connects grid and the drain electrode of metal-oxide-semiconductor Q4 respectively, the first radiofrequency signal input pin A_RFIN and the second radiofrequency signal input pin B_RFIN of mixing chip U5 connects the outfan of the first band filter 5 and the second band filter 6 respectively.
As an embodiment of the present utility model, described four tunnel output microwave frequency changer circuits also include:
Resistance R1, resistance R2, resistance R3, resistance R4, filter capacitor C1, filter capacitor C2, filter capacitor C3 and filter capacitor C4;
Four outfans of described four tunnel output microwave frequency changer circuits are respectively mixed the first signal output pin IFOUT1 of chip U5, secondary signal output pin IFOUT2, 3rd signal output pin IFOUT3 and the four signal output pin IFOUT4, the first signal output pin IFOUT1 of mixing chip U5, secondary signal output pin IFOUT2, 3rd signal output pin IFOUT3 and the four signal output pin IFOUT4 is respectively through filter capacitor C1, filter capacitor C2, filter capacitor C3 and filter capacitor C4 and one DVB connect, first polarity of mixing chip U5 selects foot VTIF1, second polarity selects foot VTIF2, 3rd polarity selects foot VTIF3 and quadripolarity to select foot VTIF4 respectively through resistance R1, resistance R2, resistance R3 and resistance R4 and one DVB connect.
Below in conjunction with operation principle, embodiment of the present utility model is described further:
Vertical polarization signal and the horizontal polarization signals of satellite launch is received by antenna, first amplifier 1 exports after described vertical polarization signal is carried out first order amplification to the second amplifier 2, second amplifier 2 exports after described vertical polarization signal is carried out second level amplification to the first band filter 5, first band filter 5 exports after described vertical polarization signal is carried out frequency selection to frequency mixer 7, frequency mixer 7 and crystal oscillator Y produce essence frequency, and (low frequency is 9.75GHz, high frequency is 10.6GHz), and after described vertical polarization signal and described local frequency being mixed, export an intermediate-freuqncy signal (950MHz��2150MHz) extremely described DVB, 3rd amplifier 3 exports after described horizontal polarization signals is carried out first order amplification to the 4th amplifier 4, 4th amplifier 4 exports after described horizontal polarization signals is carried out second level amplification to the second band filter 6, second band filter 6 exports after described horizontal polarization signals is carried out frequency selection to frequency mixer 7, frequency mixer 7 and crystal oscillator Y produce essence frequency, and (low frequency is 9.75GHz, high frequency is 10.6GHz), and after described horizontal polarization signals and described local frequency being mixed, export an intermediate-freuqncy signal (950MHz��2150MHz) extremely described DVB.
This utility model embodiment also provides for a kind of microwave converter including above-mentioned four tunnel output microwave frequency changer circuits.
In embodiment of the present utility model, described four tunnel output microwave frequency changer circuits include four amplifiers, two band filters, one frequency mixer, four diodes and four stabilivolts, the vertical polarization signal of satellite launch and horizontal polarization signals are carried out after two-stage amplification output to described band filter by described amplifier respectively, described band filter exports to frequency mixer after described vertical polarization signal and described horizontal polarization signals are carried out frequency selection, described frequency mixer described vertical polarization signal and described horizontal polarization signals are mixed with local frequency respectively after the signal of frequency range needed for output satellite receiver, circuit structure is simple, save cost.
The foregoing is only preferred embodiment of the present utility model; not in order to limit this utility model; all any amendment, equivalent replacement and improvement etc. made within spirit of the present utility model and principle, should be included within protection domain of the present utility model.
Claims (7)
1. a four tunnel output microwave frequency changer circuit, each outfan of described four tunnel output microwave frequency changer circuits respectively connects a DVB, it is characterised in that described four tunnel output microwave frequency changer circuits include:
Receive the vertical polarization signal of satellite launch and described vertical polarization signal is carried out the first amplifier of first order amplification;
Input is connected with the outfan of described first amplifier, and described vertical polarization signal carries out the second amplifier of second level amplification;
Input is connected with the outfan of described second amplifier, and described vertical polarization signal carries out the first band filter of frequency selection;
Receive the horizontal polarization signals of satellite launch and described horizontal polarization signals is carried out the 3rd amplifier of first order amplification;
Input is connected with the outfan of described 3rd amplifier, and described horizontal polarization signals carries out the 4th amplifier of second level amplification;
Input is connected with the outfan of described 4th amplifier, and described horizontal polarization signals carries out the second band filter of frequency selection;
First input end and the second input are connected with the outfan of described first band filter and the outfan of the second band filter respectively, produce local frequency, and described vertical polarization signal and described horizontal polarization signals are carried out with described local frequency respectively the frequency mixer being mixed; And
Four diodes and four stabilivolts;
The input of described four stabilivolts is respectively connected with a DVB, and the outfan of described four stabilivolts is connected with the positive pole of four diodes respectively, the negative pole of four diodes be connected to the power end of described frequency mixer altogether.
2. four tunnel output microwave frequency changer circuits as claimed in claim 1, it is characterised in that described four tunnel output microwave frequency changer circuits also include:
Crystal oscillator Y;
The two ends of described crystal oscillator Y are all connected with described frequency mixer, and described crystal oscillator Y and described frequency mixer produce required double; two local frequencies after carrying out frequency multiplication.
3. four tunnel output microwave frequency changer circuits as claimed in claim 2, it is characterised in that described couple of local frequency respectively 9.75GHz and 10.6GHz.
4. four tunnel output microwave frequency changer circuits as claimed in claim 3, it is characterised in that described first amplifier adopts metal-oxide-semiconductor Q1, described second amplifier to adopt metal-oxide-semiconductor Q2, described 3rd amplifier to adopt metal-oxide-semiconductor Q3, and described 4th amplifier adopts metal-oxide-semiconductor Q4;
The grid of described metal-oxide-semiconductor Q1 connects described frequency mixer, the drain electrode of described metal-oxide-semiconductor Q1 connects the grid of described metal-oxide-semiconductor Q2 and described frequency mixer simultaneously, the grid of described metal-oxide-semiconductor Q2 connects described frequency mixer, the drain electrode of described metal-oxide-semiconductor Q2 connects the input of described first band filter and described frequency mixer simultaneously, the grid of described metal-oxide-semiconductor Q3 connects described frequency mixer, the drain electrode of described metal-oxide-semiconductor Q3 connects the grid of described metal-oxide-semiconductor Q4 and described frequency mixer simultaneously, the grid of described metal-oxide-semiconductor Q4 connects described frequency mixer, the drain electrode of described metal-oxide-semiconductor Q4 connects the input of described second band filter and described frequency mixer simultaneously.
5. four tunnel output microwave frequency changer circuits as claimed in claim 4, it is characterized in that, described frequency mixer adopts mixing chip U5, the first passage first grid biasing foot 1A_GATE and first passage the first drain bias foot 1A_DRAIN of described mixing chip U5 connects grid and the drain electrode of described metal-oxide-semiconductor Q1 respectively, the first passage second grid biasing foot 2A_GATE and first passage the second drain bias foot 2A_DRAIN of described mixing chip U5 connects grid and the drain electrode of described metal-oxide-semiconductor Q2 respectively, the second channel first grid biasing foot 1B_GATE and second channel the first drain bias foot 1B_DRAIN of described mixing chip U5 connects grid and the drain electrode of described metal-oxide-semiconductor Q3 respectively, the second channel second grid biasing foot 2B_GATE and second channel the second drain bias foot 2B_DRAIN of described mixing chip U5 connects grid and the drain electrode of described metal-oxide-semiconductor Q4 respectively, the first radiofrequency signal input pin A_RFIN and the second radiofrequency signal input pin B_RFIN of described mixing chip U5 connect the first band filter and the outfan of described second band filter respectively.
6. four tunnel output microwave frequency changer circuits as claimed in claim 5, it is characterised in that described four tunnel output microwave frequency changer circuits also include:
Resistance R1, resistance R2, resistance R3, resistance R4, filter capacitor C1, filter capacitor C2, filter capacitor C3 and filter capacitor C4;
The first signal output pin IFOUT1 of four outfans respectively described mixing chip U5 of described four tunnel output microwave frequency changer circuits, secondary signal output pin IFOUT2, 3rd signal output pin IFOUT3 and the four signal output pin IFOUT4, the first signal output pin IFOUT1 of described mixing chip U5, secondary signal output pin IFOUT2, 3rd signal output pin IFOUT3 and the four signal output pin IFOUT4 is respectively through described filter capacitor C1, described filter capacitor C2, described filter capacitor C3 and described filter capacitor C4 and one DVB connect, first polarity of described mixing chip U5 selects foot VTIF1, second polarity selects foot VTIF2, 3rd polarity selects foot VTIF3 and quadripolarity to select foot VTIF4 respectively through described resistance R1, described resistance R2, described resistance R3 and described resistance R4 and one DVB connect.
7. a microwave converter, it is characterised in that described microwave converter includes four tunnel output microwave frequency changer circuits as described in claim 1-6.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201521095784.7U CN205283742U (en) | 2015-12-24 | 2015-12-24 | Four ways output microwave frequency conversion circuit and microwave frequency conversion ware |
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| CN201521095784.7U CN205283742U (en) | 2015-12-24 | 2015-12-24 | Four ways output microwave frequency conversion circuit and microwave frequency conversion ware |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106533494A (en) * | 2016-12-22 | 2017-03-22 | 华讯方舟科技（湖北）有限公司 | Microwave frequency converter and microwave frequency conversion circuit thereof |
| CN106656228A (en) * | 2016-11-25 | 2017-05-10 | 华讯方舟科技（湖北）有限公司 | Four-output microwave frequency conversion circuit and four-output frequency converter |
| WO2018082299A1 (en) * | 2016-11-04 | 2018-05-11 | 华讯方舟科技有限公司 | Ku band frequency conversion circuit and frequency converter |
-
2015
- 2015-12-24 CN CN201521095784.7U patent/CN205283742U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018082299A1 (en) * | 2016-11-04 | 2018-05-11 | 华讯方舟科技有限公司 | Ku band frequency conversion circuit and frequency converter |
| CN106656228A (en) * | 2016-11-25 | 2017-05-10 | 华讯方舟科技（湖北）有限公司 | Four-output microwave frequency conversion circuit and four-output frequency converter |
| CN106533494A (en) * | 2016-12-22 | 2017-03-22 | 华讯方舟科技（湖北）有限公司 | Microwave frequency converter and microwave frequency conversion circuit thereof |
| CN106533494B (en) * | 2016-12-22 | 2019-05-03 | 华讯方舟科技（湖北）有限公司 | A kind of microwave converter and its microwave frequency changer circuit |
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Address after: 434020 Jingzhou province Hubei city Sha Cen Jingzhou Development Zone Road (Zhu Bridge Industrial Park) Patentee after: CHINA COMMUNICATION TECHNOLOGY(HUBEI) Co.,Ltd. Patentee after: CHINA COMMUNICATION TECHNOLOGY Co.,Ltd. Address before: 434020 Jingzhou province Hubei city Sha Cen Jingzhou Development Zone Road (Zhu Bridge Industrial Park) Patentee before: CHINA COMMUNICATION TECHNOLOGY(HUBEI) Co.,Ltd. Patentee before: CHINA COMMUNICATION TECHNOLOGY Co.,Ltd. |
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