CN104469214A - Ku wave band single-local-oscillator and double-output tuner - Google Patents
Ku wave band single-local-oscillator and double-output tuner Download PDFInfo
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- CN104469214A CN104469214A CN201510000833.2A CN201510000833A CN104469214A CN 104469214 A CN104469214 A CN 104469214A CN 201510000833 A CN201510000833 A CN 201510000833A CN 104469214 A CN104469214 A CN 104469214A
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Abstract
The invention discloses a Ku wave band single-local-oscillator and double-output tuner. The Ku wave band single-local-oscillator and double-output tuner comprises a microwave signal receiving and amplifying circuit and a single-local-oscillator frequency-mixing amplifying and double-output circuit. The microwave signal receiving and amplifying circuit comprises a vertical probe, a horizontal probe, a first triode, a second triode, a third triode and a fourth triode, wherein the first triode and the second triode are used for carrying out two-level low-noise amplifying on vertical polarization signals, and the third triode and the fourth triode are used for carrying out two-level low-noise amplifying on horizontal polarization signals. The microwave signal receiving and amplifying circuit further comprises a biasing circuit chip used for providing direct current biasing for the first triode, the second triode, the third triode and the fourth triode. The single-local-oscillator frequency-mixing amplifying and double-output circuit comprises a local oscillator, two band-pass filters used for carrying out frequency selection on high-frequency amplification signals, a left F head, a right F head and a selective switch, wherein the left F head and the right F head are used for outputting intermediate-frequency signals and power supplying. A satellite program of the vertical polarization signals and a satellite program of the horizontal polarization signals can be watched at the same time through the Ku wave band single-local-oscillator and double-output tuner.
Description
Technical field
The present invention relates to a kind of Ku wave band list local oscillator dual output tuner, belong to satellite signal receiving device fabrication manufacturing technology field.
Background technology
General satellite television receiving system mainly comprises: antenna, feed, low noise block downconverter, cable, clamped nipple, satellite receiver, television receiver, wherein low noise block downconverter is also referred to as tuner, is by low noise amplifier and the integrated assembly of low-converter; The effect of its making high frequency head receives satellite TV signal, and selection, the signal in line frequency road of going forward side by side amplify and frequency-conversion processing, the intermediate-freuqncy signal of final stable output.Although namely single local oscillator tuner of conventional Ku wave band is provided with the horizontal probe for receiving horizontal polarization signals, also the Vertrical probe for receiving perpendicular polarization signal is provided with, but when single local oscillator tuner of a multi-user shared Ku wave band, single local oscillator tuner of Ku wave band can only export separately the intermediate-freuqncy signal of perpendicular polarization signal mixing generation simultaneously to receiver, or to the intermediate-freuqncy signal that the mixing of receiver independent output level polarized signal produces, and when namely different user needs the satellite programming watching perpendicular polarization signal, when needing again the satellite programming watching horizontal polarization signals, then could can only be realized by single local oscillator tuner of installation two Ku wave bands, therefore use cost is higher.
Summary of the invention
The present invention is just for the deficiency that prior art exists, a kind of Ku wave band list local oscillator dual output tuner is provided, the needs that single local oscillator tuner that different user shares a Ku wave band watches the satellite programming of perpendicular polarization signal and the satellite programming of horizontal polarization signals simultaneously can be met.
For solving the problem, the technical solution used in the present invention is as follows:
A kind of Ku wave band list local oscillator dual output tuner, comprising:
Microwave signal receives amplifying circuit, and described microwave signal receives amplifying circuit and comprises the Vertrical probe for receiving perpendicular polarization signal and the horizontal probe for receiving horizontal polarization signals; Also comprise the perpendicular polarization signal for receiving the transmission of described Vertrical probe, and perpendicular polarization signal is carried out to the first triode and second triode of two-stage low noise amplification, and for receiving the horizontal polarization signals of described horizontal probe transmission, and horizontal polarization signals is carried out to the 3rd triode and the 4th triode of two-stage low noise amplification; Also comprise the biasing circuit chip for providing direct current biasing to described first triode, described second triode, described 3rd triode and described 4th triode, undistorted to ensure that signal voltage amplifies;
Dual output circuit is amplified in single local oscillator mixing, and described single local oscillator mixing amplification dual output circuit comprises the local oscillation circuit for generation of local frequency; The High frequency amplification signal also comprised for exporting described second triode carries out the first band pass filter of He Ne laser and the second band pass filter for carrying out He Ne laser to the High frequency amplification signal of described 4th triode output; Also comprise for exporting intermediate-freuqncy signal and the left F head and right F head that input for powering, and connect the selector switch of described first band pass filter, described second band pass filter, described left F head and described right F head.
As the improvement of technique scheme, described selector switch is A7532 chip, and described selector switch is connected with the tuner multiplexer (MUX for providing operating voltage.Particularly, described tuner multiplexer (MUX can be L8012 chip.
As the improvement of technique scheme, described first band pass filter and be respectively arranged with between described second band pass filter and described selector switch and the vertical power amplifier of one-level intermediate frequency amplification carried out to perpendicular polarization signal and horizontal polarization signals is carried out to the horizontal power amplifier of one-level intermediate frequency amplification; Described left F head and be respectively arranged with between described right F head and described selector switch the left output power amplifier of secondary amplification and right output power amplifier are carried out to dual output intermediate-freuqncy signal.
As the improvement of technique scheme, described local oscillation circuit comprise concussion pipe and for providing the 5th triode of bias current to described concussion pipe.
Compared with prior art, implementation result of the present invention is as follows in the present invention:
Ku wave band list local oscillator dual output tuner of the present invention, horizontal probe and Vertrical probe Received signal strength is simultaneously made by adopting biasing circuit chip, and make different user can select to receive the IF output signal of different polarization mode as required respectively by arranging selector switch, the needs that single local oscillator tuner that different user shares a Ku wave band watches the satellite programming of perpendicular polarization signal and the satellite programming of horizontal polarization signals simultaneously can be met, and reduce multi-user and use single local oscillator tuner of Ku wave band to watch the cost of satellite television programming; And the preferred A7532 chip of the present invention is as being selector switch, the Signal segregation degree relative to the selector switch of eight diodes compositions of routine with output is good, can not affect the advantage of the output bandwidth of output signal.
Accompanying drawing explanation
Fig. 1 is the structural representation of single local oscillator mixing amplification dual output circuit of Ku wave band list local oscillator dual output tuner of the present invention;
Fig. 2 is the structural representation of the microwave signal reception amplifying circuit of Ku wave band list local oscillator dual output tuner of the present invention;
Fig. 3 is the structural representation of signal output selector switch conventional in the satellite receiving equipment of prior art.
Embodiment
Below in conjunction with specific embodiments content of the present invention is described.
As shown in Figure 1 to Figure 2, be Ku wave band list local oscillator dual output tuner structure schematic diagram of the present invention, the joint 1 in Fig. 1 and joint 2 are connected with joint 2 with the joint 1 in Fig. 2 respectively.Ku wave band list local oscillator dual output tuner of the present invention, comprising: microwave signal receives amplifying circuit, and described microwave signal receives amplifying circuit and comprises the Vertrical probe for receiving perpendicular polarization signal and the horizontal probe for receiving horizontal polarization signals; Also comprise the perpendicular polarization signal for receiving the transmission of described Vertrical probe, and perpendicular polarization signal is carried out to the first triode Q1 and the second triode Q2 of two-stage low noise amplification, and for receiving the horizontal polarization signals of described horizontal probe transmission, and horizontal polarization signals is carried out to the 3rd triode Q3 and the 4th triode Q4 of two-stage low noise amplification; Also comprise the biasing circuit chip IC 1 for providing direct current biasing to described first triode Q1, described second triode Q2, described 3rd triode Q3 and described 4th triode Q4, undistorted to ensure that signal voltage amplifies.Described biasing circuit chip IC 1 can be L8400 chip particularly.
Dual output circuit is amplified in single local oscillator mixing, and particularly, its mixer action can be realized by mixer tube Q5 and Q6, and described single local oscillator mixing amplification dual output circuit comprises the local oscillation circuit for generation of local frequency; The High frequency amplification signal also comprised for exporting described second triode Q2 carries out the first band pass filter T1 of He Ne laser and the second band pass filter T2 for carrying out He Ne laser to the High frequency amplification signal of described 4th triode Q4 output; Also comprise for exporting intermediate-freuqncy signal and the left F head and right F head that input for powering, and connect the selector switch IC3 of described first band pass filter T1, described second band pass filter T2, described left F head and described right F head.Described selector switch IC3 is A7532 chip, and described selector switch IC3 is connected with the tuner multiplexer (MUX IC2 for providing operating voltage.Particularly, described tuner multiplexer (MUX IC2 can be L8012 chip.Particularly, described local oscillation circuit comprises concussion pipe Z1 and for providing the 5th triode Z2 of bias current to described concussion pipe Z1.
Further, be respectively arranged with between described first band pass filter T1 and described second band pass filter T2 and described selector switch IC3 and the vertical power amplifier G2 of one-level intermediate frequency amplification carried out to perpendicular polarization signal and horizontal polarization signals is carried out to the horizontal power amplifier G1 of one-level intermediate frequency amplification; Described left F head and be respectively arranged with between described right F head and described selector switch IC3 the left output power amplifier G4 of secondary amplification and right output power amplifier G3 is carried out to dual output intermediate-freuqncy signal.Particularly, described horizontal power amplifier G1, described vertical power amplifier G2, described right output power amplifier G3 and described left output power amplifier G4 can be BGA2709 chip.In figure, remaining resistance R1 ~ R7 is all for improving circuit performance according to actual needs, realizing matching effect, and electric capacity C1 ~ C18 is all for passing through signal, intercepting electric current, shield electromagnetic interference.
Described biasing circuit chip IC 1 i.e. L8400 chip gives described first triode Q1, described second triode Q2, described 3rd triode Q3 and described 4th triode Q4 provides identical positive negative bias, perpendicular polarization signal is received by Vertrical probe and be delivered to the first band pass filter T1 after described first triode Q1 and described second triode Q2 two-stage amplify, first band pass filter T1 transfers out the local frequency that the signal of target frequency bands and local oscillation circuit produce and carries out mixing to produce intermediate-freuqncy signal, intermediate-freuqncy signal is connected by described selector switch IC3 and is delivered to after described left output power amplifier G4 or described right output power amplifier G3 carries out the amplification of secondary intermediate frequency and is delivered to receiver by described left F head or described right F head after vertical power amplifier G2 amplifies, simultaneously, horizontal polarization signals is also received by horizontal probe and be delivered to the second band pass filter T2 after described 3rd triode Q3 and described 4th triode Q4 two-stage amplifies, second band pass filter T2 transfers out the local frequency that the signal of target frequency bands and local oscillation circuit produce and carries out mixing to produce intermediate-freuqncy signal, intermediate-freuqncy signal is connected by described selector switch IC3 and is delivered to after described left output power amplifier G4 or described right output power amplifier G3 carries out the amplification of secondary intermediate frequency and is delivered to receiver by described left F head or described right F head after horizontal power amplifier G1 amplifies.
When different users needs the signal selecting different polarization mode, send voltage control signal by receiver, thus control described selector switch IC3 and select.Particularly, when the user connecting described left F head needs the satellite programming watching horizontal polarization signals, and the user connecting described right F head is when needing the satellite programming watching perpendicular polarization signal, makes described left F head connect horizontal power amplifier G1, make described right F head connect vertical power amplifier G2.When the user and the user being connected described right F head that connect described left F head need the satellite programming watching horizontal polarization signals, described left F head is made all to be connected described horizontal power amplifier G1 with described right F head.In addition, for described selector switch IC3, usually the output adopting the diode of two groups of structures as shown in Figure 3 to realize horizontal signal and vertical signal in satellite receiving equipment is selected, but there is the inadequate problem of the Signal segregation degree of output in technique scheme, directly can affect the output bandwidth of output signal, then there are not the problems referred to above in the preferred A7532 chip of the present invention.
Above content is detailed description made for the present invention in conjunction with specific embodiments, can not assert that the present invention specifically implements to be only limitted to these explanations.For those skilled in the art, without departing from the inventive concept of the premise, some simple deduction or replace can also be made, all should be considered as belonging to the scope of protection of the invention.
Claims (4)
1.Ku wave band list local oscillator dual output tuner, is characterized in that, comprising:
Microwave signal receives amplifying circuit, and described microwave signal receives amplifying circuit and comprises the Vertrical probe for receiving perpendicular polarization signal and the horizontal probe for receiving horizontal polarization signals; Also comprise the perpendicular polarization signal for receiving the transmission of described Vertrical probe, and perpendicular polarization signal is carried out to the first triode (Q1) and second triode (Q2) of two-stage low noise amplification, and for receiving the horizontal polarization signals of described horizontal probe transmission, and horizontal polarization signals is carried out to the 3rd triode (Q3) and the 4th triode (Q4) of two-stage low noise amplification; Also comprise the biasing circuit chip (IC1) for providing direct current biasing to described first triode (Q1), described second triode (Q2), described 3rd triode (Q3) and described 4th triode (Q4), undistorted to ensure that signal voltage amplifies;
Dual output circuit is amplified in single local oscillator mixing, and described single local oscillator mixing amplification dual output circuit comprises the local oscillation circuit for generation of local frequency; The High frequency amplification signal also comprised for exporting described second triode (Q2) carries out the second band pass filter (T2) that first band pass filter (T1) of He Ne laser and the High frequency amplification signal for exporting described 4th triode (Q4) carry out He Ne laser; Also comprise for exporting intermediate-freuqncy signal and for the left F head of input of powering and right F head, and connect the selector switch (IC3) of described first band pass filter (T1), described second band pass filter (T2), described left F head and described right F head.
2. Ku wave band list local oscillator dual output tuner as claimed in claim 1, it is characterized in that, described selector switch (IC3) is A7532 chip, and described selector switch (IC3) is connected with the tuner multiplexer (MUX (IC2) for providing operating voltage.
3. Ku wave band list local oscillator dual output tuner as claimed in claim 1, it is characterized in that, described first band pass filter (T1) and be respectively arranged with between described second band pass filter (T2) and described selector switch (IC3) and the vertical power amplifier (G2) of one-level intermediate frequency amplification carried out to perpendicular polarization signal and horizontal polarization signals is carried out to the horizontal power amplifier (G1) of one-level intermediate frequency amplification; Described left F head and be respectively arranged with the left output power amplifier (G4) and the right output power amplifier (G3) that dual output intermediate-freuqncy signal are carried out to secondary amplification between described right F head and described selector switch (IC3).
4. as the Ku wave band list local oscillator dual output tuner as described in arbitrary in claims 1 to 3, it is characterized in that, described local oscillation circuit comprises concussion pipe (Z1) and for providing the 5th triode (Z2) of bias current to described concussion pipe (Z1).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510000833.2A CN104469214A (en) | 2015-01-04 | 2015-01-04 | Ku wave band single-local-oscillator and double-output tuner |
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| CN201510000833.2A CN104469214A (en) | 2015-01-04 | 2015-01-04 | Ku wave band single-local-oscillator and double-output tuner |
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| CN201510000833.2A Pending CN104469214A (en) | 2015-01-04 | 2015-01-04 | Ku wave band single-local-oscillator and double-output tuner |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106488200A (en) * | 2016-08-05 | 2017-03-08 | 深圳市平方兆赫科技有限公司 | A kind of high frequency tuner circuit and tuner |
| CN108848357A (en) * | 2018-09-20 | 2018-11-20 | 珠海市普斯赛特科技有限公司 | A kind of KU single-cable extended pattern frequency demultiplier |
| US11018840B2 (en) | 2019-01-17 | 2021-05-25 | Analog Devices International Unlimited Company | Single local oscillator in a multi-band frequency division duplex transceiver |
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| EP1775866A1 (en) * | 2005-10-14 | 2007-04-18 | SPAUN-electronic GmbH & Co. KG | Switching device for a satellite receiving installation |
| CN103490730A (en) * | 2013-09-10 | 2014-01-01 | 珠海市百音电子科技有限公司 | PLL-CS waveband multifunctional frequency down converter with dual-polarized integrated circuit structure |
| CN203457234U (en) * | 2013-09-23 | 2014-02-26 | 深圳市平方兆赫科技有限公司 | A low-noise block downconverter |
| CN204334779U (en) * | 2015-01-04 | 2015-05-13 | 安徽波维电子科技有限公司 | Ku wave band list local oscillator dual output tuner |
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2015
- 2015-01-04 CN CN201510000833.2A patent/CN104469214A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1775866A1 (en) * | 2005-10-14 | 2007-04-18 | SPAUN-electronic GmbH & Co. KG | Switching device for a satellite receiving installation |
| CN103490730A (en) * | 2013-09-10 | 2014-01-01 | 珠海市百音电子科技有限公司 | PLL-CS waveband multifunctional frequency down converter with dual-polarized integrated circuit structure |
| CN203457234U (en) * | 2013-09-23 | 2014-02-26 | 深圳市平方兆赫科技有限公司 | A low-noise block downconverter |
| CN204334779U (en) * | 2015-01-04 | 2015-05-13 | 安徽波维电子科技有限公司 | Ku wave band list local oscillator dual output tuner |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106488200A (en) * | 2016-08-05 | 2017-03-08 | 深圳市平方兆赫科技有限公司 | A kind of high frequency tuner circuit and tuner |
| CN106488200B (en) * | 2016-08-05 | 2019-06-18 | 深圳市平方兆赫科技有限公司 | A kind of high frequency tuner circuit and tuner |
| CN108848357A (en) * | 2018-09-20 | 2018-11-20 | 珠海市普斯赛特科技有限公司 | A kind of KU single-cable extended pattern frequency demultiplier |
| US11018840B2 (en) | 2019-01-17 | 2021-05-25 | Analog Devices International Unlimited Company | Single local oscillator in a multi-band frequency division duplex transceiver |
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Application publication date: 20150325 |