CN2800650Y - Eight-port output satellite high frequency head - Google Patents
Eight-port output satellite high frequency head Download PDFInfo
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- CN2800650Y CN2800650Y CN 200420150495 CN200420150495U CN2800650Y CN 2800650 Y CN2800650 Y CN 2800650Y CN 200420150495 CN200420150495 CN 200420150495 CN 200420150495 U CN200420150495 U CN 200420150495U CN 2800650 Y CN2800650 Y CN 2800650Y
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- frequency
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Abstract
The utility model discloses an eight-port output satellite high-frequency head which is arranged between an antenna and a satellite receiver. The utility model is characterized in that the utility model is orderly provided with a band pass filter, a mixer, an intermediate-frequency amplifier and an intermediate-frequency signal four-way divider, and is also provided with four-input two-output matrix selection switches in four ways; four input terminals of a matrix transfer switch in each way are respectively and correspondingly connected with four kinds of satellite intermediate-frequency signals. The utility model has the advantages that the assembly of the system is simplified; various components are shared; the cable lines for connecting the satellite receiver can be decreased; the all-band signals are transformed into satellite intermediate-frequency signals to be received with the lowest cost; independent dual vibration and dual polarization can be realized according to the needs of users to freely select and transfer the satellite signals. The utility model overcomes the limitation of the use of the single-port output satellite high-frequency head, and the individual requirements of the whole society to the satellite high-frequency head can be fully met. The utility model can be used for satellite live broadcast and head ends of digital television DVB-C systems, and is combined with the satellite antenna and the satellite receiver to complete the reception of the satellite signals.
Description
Technical field
The utility model relates to the wireless radio transmission relay earth station that uses radiation field, especially relates to a kind of eight ports output satellite tuner.
Background technology
The complete satellite earth receiving station of a cover that satellite receiving system is made up of parabolic antenna, tuner, satellite receiver.Because what satellite transmission adopted is microwave, has optics straightline propagation characteristic, for C-band and Ku wave band, generally to adopt to have the very parabolic antenna of highly directive, it is made up of paraboloidal reflector and the feed two parts that are erected at the parabolic focus position.The effect of antenna is to utilize the principle of geometric optics to assemble to focus from aerial satellite-signal energy reflection, by the feed that is on the focus electric wave signal conduction that desire receives is flowed to the tuner that is right after thereafter, the effect of tuner is that the small-signal that antenna is received is amplified, and respectively with C-band 3.4 ~ 4.2GHz, the signal of Ku wave band 10.75 ~ 12.75GHz is down-converted to 950 ~ 1450MHz, amplify output after the satellite intermediate-freuqncy signal of 950 ~ 2150MHz frequency range, be sent to satellite receiver with coaxial cable, the satellite-signal that satellite receiver transports tuner again carries out demodulation, demodulates satellite image signal and audio signal.Described tuner inside is made up of low noise amplifier and low-converter two parts.The local frequency of tuner has multiple, as single local oscillator have 11.30,11.25GHz etc., two local oscillators have 9.75/10.60,19.75/10.75GHz.In order to make full use of the radio frequency in the frequency range, prevent the phase mutual interference, between neighbouring country or the adjoining area, often adopt different channel and dual polarization mode to carry out the satellite audiovisual and transmit.The rectangular waveguide mouth direction that normally odd and even numbers of adjacent two channel is changed feed respectively determines that its horizontal polarization or perpendicular polarization mode work, to weaken the phase mutual interference between the adjacent channel.Along with developing rapidly of satellite transmission business, the satellite transmission business is just progressively to high band, digitlization, the transition of wideband multimedia integrated service, the domsat resource will further be opened, yet, the tuner that existing state includes C-band, Ku wave band but is single local oscillator, single port output products mostly, can not satisfy whole society's individual demand of fashion day by day.
Summary of the invention
The technical problems to be solved in the utility model is, remedy the deficiencies in the prior art, propose a kind ofly can realize that all band signal is converted into that the satellite intermediate-freuqncy signal receives and realize that according to user's needs independently two local oscillators, dual polarization select the eight ports output satellite tuner that switches arbitrarily, fully satisfy the individual demand of the whole society the satellite tuner with minimum cost.
Above-mentioned technical problem of the present utility model is solved like this:
This eight ports output satellite tuner, be arranged between antenna and the satellite receiver, comprise the reception horizontal polarization signal that is connected with antenna, the two-way low noise amplifier of perpendicular polarization signal, and two-way high-frequency signal two distributors that are connected with the two-way low noise amplifier respectively, it is characterized in that:
High-frequency signal two distributor back, described every road are connected with the relative high-end band-pass filter of frequency band with a tunnel of one tunnel relative low side band-pass filter of frequency band respectively; So that satisfactory follow-up mixing interface level and inband flatness to be provided, reduce the combination frequency that follow-up mixing produces, suppress mirror image and disturb, guarantee spectral purity.
The relative low side band-pass filter of frequency band of described two-way back is connected with No. one frequency mixer respectively, and they all are connected with a shared relative low local oscillator of local frequency.
The high-end relatively band-pass filter of frequency band of described two-way back is connected with No. one frequency mixer respectively, they all are connected with a shared relative high local oscillator of local frequency, and the intermediate frequency of the mixer output signal that the relative low side band-pass filter of frequency band with two-way of the intermediate frequency of its output signal back connects respectively is identical.
Described No. four frequency mixer back are connected with No. one intermediate frequency amplifier respectively, the output signal of first via intermediate frequency amplifier is to adopt the low relatively perpendicular polarization intermediate-freuqncy signal of local frequency, the output signal of No. the second intermediate frequency amplifier is to adopt the low relatively horizontal polarization intermediate-freuqncy signal of local frequency, the output signal of Third Road intermediate frequency amplifier is to adopt the high relatively perpendicular polarization intermediate-freuqncy signal of local frequency, and the output signal of the No. four intermediate frequency amplifier is to adopt the high relatively horizontal polarization intermediate-freuqncy signal of local frequency.Intermediate frequency amplifier is set, can makes each road signal can distribute enough level and satisfactory carrier-to-noise ratio.
Described No. four intermediate frequency amplifier back are connected with one tunnel intermediate-freuqncy signal, four distributors respectively, be divided into into four classes, ten six tunnel four distributing signals, i.e. four kinds of satellite intermediate-freuqncy signals: adopt the low relatively perpendicular polarization intermediate-freuqncy signal of local frequency, adopt the low relatively horizontal polarization intermediate-freuqncy signal of local frequency, adopt the high relatively perpendicular polarization intermediate-freuqncy signal of local frequency and adopt the relative high horizontal polarization intermediate-freuqncy signal of local frequency.
Described four tunnel intermediate-freuqncy signals four distributor back are provided with the matrix selector switch that four tunnel four inputs two are exported,
Four inputs of every road matrix conversion switch, the described four kinds of satellite intermediate-freuqncy signals of corresponding respectively connection.
Every road matrix conversion switch also is provided with four control input ends, and corresponding respectively the connection exchanges 22KHz/0KHz, direct current 18V/13V, four control signals of interchange 22KHz/0KHz, direct current 18V/13V.
Two outputs of every road matrix conversion switch, corresponding respectively No. one intermediate frequency amplifier that connects, the output port of eight intermediate frequency amplifiers can independently be selected the output of one of four kinds of satellite intermediate-freuqncy signals, and is connected to eight satellite receiver through cable respectively.
Above-mentioned technical problem of the present utility model can further be solved like this:
Described interchange 22KHz/0KHz control signal is provided respectively by each satellite receiver, is uploaded to corresponding matrix conversion switch through cable.
Described direct current 18V/13V control signal is also provided respectively by each satellite receiver, is uploaded to corresponding matrix conversion switch through cable.
The utility model has been simplified the assembling of system, shared multiple components and parts, can save the number of the cable that connects satellite receiver, guaranteeing signal noise, under the satisfactory prerequisite that gains, can realize that all band signal is converted into the satellite intermediate-freuqncy signal to be received with minimum cost, especially adopt the matrix selector switch of four inputs, two outputs can independently select the horizontal or vertical of satellite at each output port, the output of one of four kinds of intermediate-freuqncy signals that local frequency is high or low relatively, promptly can realize independently two local oscillators according to user's needs, the switch satellite signal is selected in dual polarization arbitrarily, thereby, overcome the limitation that single port output satellite tuner uses, fully satisfied the individual demand of the whole society the satellite tuner.The utility model can be widely used in direct broadcasting satellite and Digital Television DVB-C system headend, with satellite antenna, satellite receiver combination, finishes the reception of satellite-signal.
Description of drawings
Below the contrast accompanying drawing and in conjunction with embodiment the invention will be further described.
Accompanying drawing is the composition block diagram of the utility model embodiment.
Embodiment
A kind of satellite tuner of eight ports output Ku wave band
The satellite tuner of this eight ports output Ku wave band, be arranged between antenna 10 and the satellite receiver, comprise the reception horizontal polarization signal that is connected with antenna 10, the two-way low noise amplifier 11,12 of perpendicular polarization signal, and two-way high-frequency signal two distributors 21,22 that are connected with two-way low noise amplifier 11,12 respectively.Low noise amplifier 11,12 is made up of the third stage amplifier cascade respectively, and the amplifier tube model is NE3210S01, NE4210S01 and MGF4931.
Described every road high-frequency signal two distributors 21,22 back are connected with one tunnel relative low side frequency range 10.7 ~ 11.7GHz band pass filter 31,32 relative high-end frequency range 11.7 ~ 12.75GHz band pass filters 33,34 with a tunnel respectively, so that satisfactory follow-up mixing interface level and inband flatness to be provided, reduce the combination frequency that follow-up mixing produces, suppress mirror image and disturb, guarantee spectral purity.
The relative low side frequency range of described two-way 10.7 ~ 11.7GHz band pass filter 31,32 back are connected with No. one frequency mixer 41,42 respectively, and they all are connected with the local oscillator 51 of a shared local frequency 9.75GHz.
The high-end relatively frequency range 11.7 ~ 12.75GHz of described two-way band pass filter 33,34 back are connected with No. one frequency mixer 43,44 respectively, they all are connected with the local oscillator 52 of a shared local frequency 10.60GHz, and the intermediate frequency of frequency mixer 41,42 output signals that the relative low side band-pass filter of frequency band with two-way of the intermediate frequency of its output signal 31,32 back connect respectively is identical.
Described No. four frequency mixers 41,42,43,44 back are connected with No. one intermediate frequency amplifier 61,62,63,64 respectively, and the amplifier tube model is BGA2712.The output signal of first via intermediate frequency amplifier 61 is to adopt the perpendicular polarization intermediate-freuqncy signal of local frequency 9.75GHz, the output signal of No. the second intermediate frequency amplifier is to adopt the horizontal polarization intermediate-freuqncy signal of local frequency 9.75GHz, the output signal of Third Road intermediate frequency amplifier is to adopt the perpendicular polarization intermediate-freuqncy signal of local frequency 10.60GHz, and the output signal of the No. four intermediate frequency amplifier is to adopt the horizontal polarization intermediate-freuqncy signal of local frequency 10.60GHz.Intermediate frequency amplifier 61,62,63,64 is set, can makes each road signal can distribute enough level and satisfactory carrier-to-noise ratio.
Described No. four intermediate frequency amplifiers 61,62,63,64 back are connected with the first two distributor 71,72,73,74 of one tunnel intermediate-freuqncy signal respectively, are divided into into eight tunnel the first two distributing signals.
71,72,73,74 are connected with two distributors 811,812,821,822,831,832,841,842 after two tunnel intermediate-freuqncy signals respectively behind described the first two distributor of four tunnel intermediate-freuqncy signals, be divided into into four classes, ten six tunnel four distributing signals, i.e. four kinds of satellite intermediate-freuqncy signals: the horizontal polarization intermediate-freuqncy signal that adopts the perpendicular polarization intermediate-freuqncy signal of local frequency 9.75GHz, the horizontal polarization intermediate-freuqncy signal that adopts local frequency 9.75GHz, the perpendicular polarization intermediate-freuqncy signal that adopts local frequency 10.60GHz and employing local frequency 10.60GHz.
Two distributors, 811,812,821,822,831,832,841,842 back after described eight tunnel intermediate-freuqncy signals, being provided with model is the matrix selector switch 91,92,93,94 of four tunnel four inputs, two outputs of AS212.
Four inputs of every road matrix conversion switch 91,92,93,94, the described four kinds of satellite intermediate-freuqncy signals of corresponding respectively connection.
Every road matrix conversion switch 91,92,93,94 also is provided with four control input ends (omit in the accompanying drawing and do not draw), and corresponding respectively connection exchanges 22KHz/0KHz, direct current 18V/13V, exchanges four control signals of 22KHz/OKHz, direct current 18V/13V.
Two outputs of every road matrix conversion switch 91,92,93,94, corresponding respectively No. one intermediate frequency amplifier 1011,1012,1021,1022,1031,1032,1041,1042 that connects, the amplifier tube model is BFG520X.The output port of eight intermediate frequency amplifiers 1011,1012,1021,1022,1031,1032,1041,1042 can independently be selected the output of one of four kinds of satellite intermediate-freuqncy signals, and is connected to eight satellite receiver (omit in the accompanying drawing and do not draw) through cable respectively.
Described interchange 22KHz/0KHz control signal is provided respectively by each satellite receiver, is uploaded to corresponding matrix conversion switch 91,92,93,94 through cable.
Described direct current 18V/13V control signal is also provided respectively by each satellite receiver, is uploaded to corresponding matrix conversion switch 91,92,93,94 through cable.
These eight ports are exported satellite tuner and are realized that with minimum cost complete section satellite intermediate-freuqncy signal that is converted into 0.95 ~ 2.15GHz of Ku band signal of 10.7 ~ 12.75GHz receives, and select arbitrarily to switch according to the independently two local oscillators of user's needs realization, dual polarization.After faint horizontal polarization signal, the perpendicular polarization signal of the Ku wave band that antenna 10 is received carry out the low noise amplification respectively earlier, amplify output again after the down-conversion, matrix selector switch 91,92,93,94 by four tunnel four inputs, two outputs is sent to eight satellite receiver with coaxial cable respectively, provide interchange 22KHz/0KHz, the direct current 18V/13V control signal independent one of selecting in four kinds of satellite intermediate-freuqncy signals to carry out demodulation by each satellite receiver at last, demodulate satellite image signal and audio signal.
Above content be in conjunction with concrete preferred implementation to further describing that the utility model is done, can not assert that concrete enforcement of the present utility model is confined to these explanations.For the utility model person of an ordinary skill in the technical field, under the prerequisite that does not break away from the utility model design, its framework form can be flexible and changeable, can derive from the series of products of single output, two outputs, four outputs, eight outputs.As long as make some simple deduction or replace, all should be considered as belonging to the scope of patent protection that the utility model is determined by claims of being submitted to.
Claims (3)
1, a kind of eight ports output satellite tuner, be arranged between antenna and the satellite receiver, comprise the reception horizontal polarization signal that is connected with antenna, the two-way low noise amplifier of perpendicular polarization signal, and two-way high-frequency signal two distributors that are connected with the two-way low noise amplifier respectively, it is characterized in that:
High-frequency signal two distributor back, described every road are connected with the relative high-end band-pass filter of frequency band with a tunnel of one tunnel relative low side band-pass filter of frequency band respectively;
The relative low side band-pass filter of frequency band of described two-way back is connected with No. one frequency mixer respectively, and they all are connected with a shared relative low local oscillator of local frequency;
The high-end relatively band-pass filter of frequency band of described two-way back is connected with No. one frequency mixer respectively, they all are connected with a shared relative high local oscillator of local frequency, and the intermediate frequency of the mixer output signal that the relative low side band-pass filter of frequency band with two-way of the intermediate frequency of its output signal back connects respectively is identical;
Described No. four frequency mixer back are connected with No. one intermediate frequency amplifier respectively, the output signal of first via intermediate frequency amplifier is to adopt the low relatively perpendicular polarization intermediate-freuqncy signal of local frequency, the output signal of No. the second intermediate frequency amplifier is to adopt the low relatively horizontal polarization intermediate-freuqncy signal of local frequency, the output signal of Third Road intermediate frequency amplifier is to adopt the high relatively perpendicular polarization intermediate-freuqncy signal of local frequency, and the output signal of the No. four intermediate frequency amplifier is to adopt the high relatively horizontal polarization intermediate-freuqncy signal of local frequency;
Described No. four intermediate frequency amplifier back are connected with one tunnel intermediate-freuqncy signal, four distributors respectively, be divided into into four classes, ten six tunnel four distributing signals, i.e. four kinds of satellite intermediate-freuqncy signals: adopt the low relatively perpendicular polarization intermediate-freuqncy signal of local frequency, adopt the low relatively horizontal polarization intermediate-freuqncy signal of local frequency, adopt the high relatively perpendicular polarization intermediate-freuqncy signal of local frequency and adopt the relative high horizontal polarization intermediate-freuqncy signal of local frequency;
Described four tunnel intermediate-freuqncy signals four distributor back, be provided with the matrix selector switch of four tunnel four inputs, two outputs, four inputs of every road matrix conversion switch, the described four kinds of satellite intermediate-freuqncy signals of corresponding respectively connection, every road matrix conversion switch also is provided with four control input ends, corresponding respectively the connection exchanges 22KHz/0KHz, direct current 18V/13V, exchange 22KHz/0KHz, four control signals of direct current 18V/13V, two outputs of every road matrix conversion switch, corresponding respectively No. one intermediate frequency amplifier that connects, the output port of eight intermediate frequency amplifiers can independently be selected the output of one of four kinds of satellite intermediate-freuqncy signals, and is connected to eight satellite receiver through cable respectively.
2, according to the described eight ports output of claim 1 satellite tuner, it is characterized in that described interchange 22KHz/0KHz control signal is provided respectively by each satellite receiver, is uploaded to corresponding matrix conversion switch through cable.
3, according to the described eight ports output of claim 1 satellite tuner, it is characterized in that described direct current 18V/13V control signal is also provided respectively by each satellite receiver, is uploaded to corresponding matrix conversion switch through cable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420150495 CN2800650Y (en) | 2004-09-16 | 2004-09-16 | Eight-port output satellite high frequency head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420150495 CN2800650Y (en) | 2004-09-16 | 2004-09-16 | Eight-port output satellite high frequency head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2800650Y true CN2800650Y (en) | 2006-07-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420150495 Expired - Lifetime CN2800650Y (en) | 2004-09-16 | 2004-09-16 | Eight-port output satellite high frequency head |
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| CN (1) | CN2800650Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101938076A (en) * | 2010-08-13 | 2011-01-05 | 航天东方红卫星有限公司 | Microsatellite unplugged cable network |
| CN101320990B (en) * | 2007-05-31 | 2012-01-11 | 慧国(上海)软件科技有限公司 | Multi-channel receiver and method of reducing interference of the same |
| CN107820028A (en) * | 2017-11-16 | 2018-03-20 | 珠海市普斯赛特科技有限公司 | A kind of multi-channel switch with function of power protection |
| CN113839689A (en) * | 2021-10-29 | 2021-12-24 | 上海创远仪器技术股份有限公司 | System for realizing fast switching transceiving processing based on switch cascade network |
| CN114039642A (en) * | 2021-10-11 | 2022-02-11 | 西安空间无线电技术研究所 | High-speed Ka frequency range repeater system with large bandwidth and adjustable frequency |
-
2004
- 2004-09-16 CN CN 200420150495 patent/CN2800650Y/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101320990B (en) * | 2007-05-31 | 2012-01-11 | 慧国(上海)软件科技有限公司 | Multi-channel receiver and method of reducing interference of the same |
| CN101938076A (en) * | 2010-08-13 | 2011-01-05 | 航天东方红卫星有限公司 | Microsatellite unplugged cable network |
| CN101938076B (en) * | 2010-08-13 | 2012-11-14 | 航天东方红卫星有限公司 | Microsatellite unplugged cable network |
| CN107820028A (en) * | 2017-11-16 | 2018-03-20 | 珠海市普斯赛特科技有限公司 | A kind of multi-channel switch with function of power protection |
| CN107820028B (en) * | 2017-11-16 | 2024-05-17 | 珠海市普斯赛特科技有限公司 | Multi-path change-over switch with power supply protection function |
| CN114039642A (en) * | 2021-10-11 | 2022-02-11 | 西安空间无线电技术研究所 | High-speed Ka frequency range repeater system with large bandwidth and adjustable frequency |
| CN114039642B (en) * | 2021-10-11 | 2024-03-26 | 西安空间无线电技术研究所 | High-speed Ka frequency band repeater system with large bandwidth and adjustable frequency |
| CN113839689A (en) * | 2021-10-29 | 2021-12-24 | 上海创远仪器技术股份有限公司 | System for realizing fast switching transceiving processing based on switch cascade network |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20140916 Granted publication date: 20060726 |