CN204258729U - C-band bipolar double-local-oscillator two-output low-noise frequency demultiplier - Google Patents
C-band bipolar double-local-oscillator two-output low-noise frequency demultiplier Download PDFInfo
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- CN204258729U CN204258729U CN201420289688.5U CN201420289688U CN204258729U CN 204258729 U CN204258729 U CN 204258729U CN 201420289688 U CN201420289688 U CN 201420289688U CN 204258729 U CN204258729 U CN 204258729U
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- 230000010287 polarization Effects 0.000 abstract description 10
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Abstract
The utility model discloses a bipolar two local oscillators of C wave band output low noise frequency demultiplier, it includes that the input is connected with the horizontal signal local oscillator district and the input of horizontal polarization antenna and is connected with the vertical signal local oscillator district of vertical polarization antenna. The low noise frequency demultiplier also comprises a horizontal and vertical signal mixer; the output ends of the horizontal signal local oscillation area and the vertical signal local oscillation area are in conductive connection with the input end of the horizontal vertical signal mixer, and the horizontal vertical signal mixer integrates two signals with different frequencies input by the horizontal signal local oscillation area and the vertical signal local oscillation area and outputs the signals. Implement the technical scheme of the utility model, synthesize back output with polarization horizontal signal and polarization vertical signal through horizontal vertical signal mixer, do not need voltage switch polarization horizontal signal and polarization vertical signal to voltage interference when having avoided switching level and vertical signal has greatly optimized the performance of low noise frequency demultiplier.
Description
Technical field
The utility model relates to communication frequency demultiplier technical field, especially relates to two local oscillator two output low-noise frequency demultiplier of a kind of C-band bipolarity.
Background technology
The operation principle that satellite antenna receives satellite television utilizes satellite antenna to collect faint satellite-signal, and this satellite-signal is reflexed to the lnb of device at disc-shaped antenna focus place.Then, this concentrated signal amplifies by lnb, and rf frequency is down to the intermediate frequency of about 1GHz to 2GHz, is then sent to indoor receiver or top box of digital machine via cable.The channel will watched in signal is selected by receiver, after amplification demodulation is recovered to image and voice signal, and the broadcast program with regard to input TV.
Along with science and technology and the development of life, the transmission of communication is also more and more universal, watches that the ratio of satellite television is also more and more higher in family.Wherein, the essential device of satellite TV's TV watched by frequency demultiplier, but the frequency demultiplier product that C-band exports on the market at present there will be voltage disturbance when switching horizontal and vertical signal.
Utility model content
The technical problems to be solved in the utility model is that providing a kind of there will not be two local oscillator two output low-noise frequency demultiplier of the C-band bipolarity of voltage disturbance.
The utility model solves the technical scheme that its technical problem adopts: construct two local oscillator two output low-noise frequency demultiplier of a kind of C-band bipolarity, comprises the vertical signal local oscillator district that horizontal signal local oscillator district that input is connected with horizontally-polarized antenna and input are connected with vertical polarized antenna; It is characterized in that, also comprise horizontal vertical signal blender; Described horizontal signal local oscillator district is all connected with the input conducting of described horizontal vertical signal blender with the output in described vertical signal local oscillator district, exports after two kinds of signal synthesis of the different frequency that described horizontal signal local oscillator district inputs with described vertical signal local oscillator district by described horizontal vertical signalling device.
Preferably, described lnb also comprises the 3rd intermediate frequency amplifier and horizontal vertical signal separator; Described horizontal vertical signal blender, described 3rd intermediate frequency amplifier, described horizontal vertical signal separator successively conducting connect, and described horizontal vertical signal separator has two outputs.
Preferably, described horizontal signal local oscillator district comprises the first amplifier, the first mixting circuit, the first oscillator, the first intermediate frequency amplifier and the first intermediate-frequency filter; Described first amplifier, described first mixting circuit, described first intermediate frequency amplifier, described first intermediate-frequency filter successively conducting connect, and the input of described first amplifier is connected with described horizontally-polarized antenna, the output of described first intermediate-frequency filter is connected with the input conducting of described horizontal vertical signal blender; Described first oscillator is connected with described first mixting circuit conducting.
Preferably, described first amplifier is microwave field effect electric crystal; The frequency of oscillation of described first oscillator is 5150MHz.
Preferably, described vertical signal local oscillator district comprises the second amplifier, the second mixting circuit, the second oscillator, the second intermediate frequency amplifier and the second intermediate-frequency filter; Described second amplifier, described second mixting circuit, described second intermediate frequency amplifier, described second intermediate-frequency filter successively conducting connect, and the input of described second amplifier is connected with described vertical polarized antenna, the output of described second intermediate-frequency filter is connected with the input conducting of described horizontal vertical signal blender; Described second oscillator is connected with described second mixting circuit conducting.
Preferably, described second amplifier is microwave field effect electric crystal; The frequency of oscillation of described second oscillator is 5150MHz.
Implement the technical solution of the utility model, at least there is following beneficial effect: the lnb in the utility model have employed horizontal vertical signal blender, do not need voltage switching polarization level signal and the vertical signal of polarization, thus the voltage disturbance avoided when switching horizontal and vertical signal, greatly optimize the performance of lnb.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is described in further detail, in accompanying drawing:
Fig. 1 is the structural representation of two local oscillator two output low-noise frequency demultiplier of a kind of C-band bipolarity in embodiments more of the present utility model;
Wherein, 1, horizontal signal local oscillator district; 11, horizontally-polarized antenna; 12, the first amplifier; 13, the first mixting circuit; 131, the first oscillator; 14, the first intermediate frequency amplifier; 15, the first intermediate-frequency filter; 2, vertical signal local oscillator district; 21 vertical polarized antennas; 22, the second amplifier; 23, the second mixting circuit; 231, the second oscillator; 24, the second intermediate frequency amplifier; 25, the second intermediate-frequency filter; 3, horizontal vertical signal blender; 4, the 3rd intermediate frequency amplifier; 5, horizontal vertical signal separator.
Embodiment
In order to there be understanding clearly to technical characteristic of the present utility model, object and effect, now contrast accompanying drawing and describe embodiment of the present utility model in detail.
Two local oscillator two output low-noise frequency demultiplier of a kind of C-band bipolarity, its advantage is that gain is high, noise is extremely low, and the lnb in the utility model does not need voltage switching polarization level signal and the vertical signal of polarization, thus the voltage disturbance avoided when switching horizontal and vertical signal, greatly optimize the performance of lnb.
Consult Fig. 1, in certain embodiments, this lnb comprises the vertical signal local oscillator district 2 that horizontal signal local oscillator district 1 that input is connected with horizontally-polarized antenna 11 and input are connected with vertical polarized antenna 21.And this lnb also comprises horizontal vertical signal blender 3; This horizontal signal local oscillator district 1 is all connected with the input conducting of this horizontal vertical signal blender 3 with the output in this vertical signal local oscillator district 2, exports after two kinds of signal synthesis of the different frequency that this signal local oscillator district 2 vertical with this of horizontal signal local oscillator district 1 inputs by this horizontal vertical signalling device.
In certain embodiments, this lnb also comprises the 3rd intermediate frequency amplifier 4 and horizontal vertical signal separator 5; This horizontal vertical signal blender the 3, the 3rd intermediate frequency amplifier 4, this horizontal vertical signal separator 5 successively conducting connect, and this horizontal vertical signal separator 5 has two outputs.
Understandably, this horizontal signal local oscillator district 1 comprises the first amplifier 12, first mixting circuit 13, first oscillator 131, first intermediate frequency amplifier 14 and the first intermediate-frequency filter 15; This first amplifier 12, this first mixting circuit 13, this first intermediate frequency amplifier 14, this first intermediate-frequency filter 15 successively conducting connect, and the input of this first amplifier 12 is connected with this horizontally-polarized antenna 11, the output of this first intermediate-frequency filter 15 is connected with the input conducting of this horizontal vertical signal blender 3; This first oscillator 131 is connected with this first mixting circuit 13 conducting.
Further, this first amplifier 12 is microwave field effect electric crystal; The frequency of oscillation of this first oscillator 131 is 5150MHz.Understandably, according to the design of actual product, the vibration frequency of this vibrator can also adopt other specification according to the needs of actual product.
Understandably, this vertical signal local oscillator district 2 comprises the second amplifier 22, second mixting circuit 23, second oscillator 231, second intermediate frequency amplifier 24 and the second intermediate-frequency filter 25; This second amplifier 22, this second mixting circuit 23, this second intermediate frequency amplifier 24, this second intermediate-frequency filter 25 successively conducting connect, and the input of this second amplifier 22 is connected with this vertical polarized antenna 21, the output of this second intermediate-frequency filter 25 is connected with the input conducting of this horizontal vertical signal blender 3; This second oscillator 231 is connected with this second mixting circuit 23 conducting.
Further, this second amplifier 22 is microwave field effect electric crystal; The frequency of oscillation of this second oscillator 231 is 5150MHz.Understandably, according to the design of actual product, the vibration frequency of this vibrator can also adopt other specification according to the needs of actual product.
In addition, the design circuit plate of this lnb adopts straight grooving technology, save manual soldering, properties of product are made to obtain conforming raising, understandably, this lnb is when front-end signal enters amplifier, design in the past must be welded with a fine copper wire, to adjust phase place and noise, and lnb of the present utility model all adopts grooving mode to eliminate the processing step of weldering fine copper wire on pcb board and shell, , overcome the problem causing quality instability because of the difference of manually-operated accuracy, while improve production efficiency, further improves stability and the consistency of properties of product.
The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, for a person skilled in the art, the utility model can have various change, combination and change.All within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within right of the present utility model.
Claims (6)
1. two local oscillator two output low-noise frequency demultiplier of C-band bipolarity, comprises the vertical signal local oscillator district that horizontal signal local oscillator district that input is connected with horizontally-polarized antenna and input are connected with vertical polarized antenna; It is characterized in that, also comprise horizontal vertical signal blender; Described horizontal signal local oscillator district is all connected with the input conducting of described horizontal vertical signal blender with the output in described vertical signal local oscillator district, exports after two kinds of signal synthesis of the different frequency that described horizontal signal local oscillator district inputs with described vertical signal local oscillator district by described horizontal vertical signalling device.
2. lnb according to claim 1, is characterized in that, described lnb also comprises the 3rd intermediate frequency amplifier and horizontal vertical signal separator; Described horizontal vertical signal blender, described 3rd intermediate frequency amplifier, described horizontal vertical signal separator successively conducting connect, and described horizontal vertical signal separator has two outputs.
3. lnb according to claim 1, is characterized in that, described horizontal signal local oscillator district comprises the first amplifier, the first mixting circuit, the first oscillator, the first intermediate frequency amplifier and the first intermediate-frequency filter; Described first amplifier, described first mixting circuit, described first intermediate frequency amplifier, described first intermediate-frequency filter successively conducting connect, and the input of described first amplifier is connected with described horizontally-polarized antenna, the output of described first intermediate-frequency filter is connected with the input conducting of described horizontal vertical signal blender; Described first oscillator is connected with described first mixting circuit conducting.
4. lnb according to claim 3, is characterized in that, described first amplifier is microwave field effect electric crystal; The frequency of oscillation of described first oscillator is 5150MHz.
5. lnb according to claim 1, is characterized in that, described vertical signal local oscillator district comprises the second amplifier, the second mixting circuit, the second oscillator, the second intermediate frequency amplifier and the second intermediate-frequency filter; Described second amplifier, described second mixting circuit, described second intermediate frequency amplifier, described second intermediate-frequency filter successively conducting connect, and the input of described second amplifier is connected with described vertical polarized antenna, the output of described second intermediate-frequency filter is connected with the input conducting of described horizontal vertical signal blender; Described second oscillator is connected with described second mixting circuit conducting.
6. lnb according to claim 5, is characterized in that, described second amplifier is microwave field effect electric crystal; The frequency of oscillation of described second oscillator is 5150MHz.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420289688.5U CN204258729U (en) | 2014-06-03 | 2014-06-03 | C-band bipolar double-local-oscillator two-output low-noise frequency demultiplier |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420289688.5U CN204258729U (en) | 2014-06-03 | 2014-06-03 | C-band bipolar double-local-oscillator two-output low-noise frequency demultiplier |
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| Publication Number | Publication Date |
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| CN204258729U true CN204258729U (en) | 2015-04-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420289688.5U Expired - Lifetime CN204258729U (en) | 2014-06-03 | 2014-06-03 | C-band bipolar double-local-oscillator two-output low-noise frequency demultiplier |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105578090A (en) * | 2016-01-22 | 2016-05-11 | 珠海佳讯创新科技股份有限公司 | Dual output high-frequency tuner allowing hybrid input of ground wave signal and satellite signal |
-
2014
- 2014-06-03 CN CN201420289688.5U patent/CN204258729U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105578090A (en) * | 2016-01-22 | 2016-05-11 | 珠海佳讯创新科技股份有限公司 | Dual output high-frequency tuner allowing hybrid input of ground wave signal and satellite signal |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20150408 |