CN206611511U - A kind of three local oscillator frequency demultipliers of single output - Google Patents
A kind of three local oscillator frequency demultipliers of single output Download PDFInfo
- Publication number
- CN206611511U CN206611511U CN201720378379.9U CN201720378379U CN206611511U CN 206611511 U CN206611511 U CN 206611511U CN 201720378379 U CN201720378379 U CN 201720378379U CN 206611511 U CN206611511 U CN 206611511U
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- frequency
- amplifying circuit
- radio frequency
- local oscillator
- demultipliers
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Abstract
The utility model discloses a kind of three local oscillator frequency demultipliers of single output, it is identical including two line structures, the signal input part being sequentially connected electrically, radio frequency amplifying circuit, wherein the radio frequency amplifying circuit resolves into tie point and the second branch road by power splitter all the way, radio frequency amplifying circuit described in another road, the tie point and second branch road are electrically connected with the first wave filter, frequency mixer, first intermediate frequency amplifier, second wave filter, combiner, second intermediate frequency amplifier and signal output part, the frequency mixer is electrically connected with local oscillation circuit, the radio frequency amplifying circuit, the frequency mixer, the local oscillation circuit, first intermediate frequency amplifier, second intermediate frequency amplifier has been electrically connected power circuit.Three local oscillator frequency demultipliers are singly exported disclosed in the utility model, signal quality is good, frequency usage rate is high, noise is small, gain stabilization, and operator cost is low.
Description
Technical field
The utility model is related to satellite communication field, more particularly to a kind of three local oscillator frequency demultipliers of single output.
Background technology
Frequency demultiplier in satellite communication field is used to receive and handle the broadcast singal from satellite, and existing KU frequency ranges are led to
Two-way radio frequency amplifying circuit is crossed, then by filter filtering, then in local oscillator is mixed with frequency mixer respectively
Frequency signal, then by intermediate frequency amplifier, filter filtering, two paths of signals combining is carried out finally by final stage intermediate frequency amplifier
Amplification output.
But, in the prior art, by the combining amplification output respectively again two-by-two of two road signals, make two users while using
And non-interference, but quality of output signals is poor, noise big, with the present improvement of people's living standards, broadcast singal
Poor TV broadcasting service can not meet the demand of people, and client needs performance more preferably, and operator cost is lower
Frequency demultiplier product.
Utility model content
The technical problems to be solved in the utility model is to provide a kind of single three local oscillator frequency demultipliers of output, signal quality is good,
Frequency usage rate is high, noise is small, gain stabilization, and operator cost is low.
In order to solve the above-mentioned technical problem, the technical solution of the utility model is：
A kind of three local oscillator frequency demultipliers of single output, including two line structures are identical, signal input part, radio frequency that be sequentially connected electrically are put
Big circuit, wherein the radio frequency amplifying circuit resolves into tie point and the second branch road by power splitter all the way, described in another road
Radio frequency amplifying circuit, the tie point and second branch road are electrically connected with the first wave filter, frequency mixer, the first intermediate frequency and put
Big device, the second wave filter, combiner, the second intermediate frequency amplifier and signal output part, the frequency mixer are electrically connected with local oscillations
Circuit, the radio frequency amplifying circuit, the frequency mixer, the local oscillation circuit, first intermediate frequency amplifier, described second
Intermediate frequency amplifier has been electrically connected power circuit.
Preferably, the radio frequency amplifying circuit includes first order radio frequency amplifying circuit, the second level radio frequency being sequentially connected electrically
Amplifying circuit and third level radio frequency amplifying circuit.
Preferably, first wave filter is bandpass filter.
Preferably, second wave filter is LTCC wave filters.
Preferably, the power circuit includes power supply chip, voltage-regulator diode and the voltage-stablizer being sequentially connected electrically, the letter
Number output end is electrically connected with the voltage-stablizer.
Using above-mentioned technical proposal, frequency demultiplier is exported relative to existing two paths of signals, two paths of signals is believed for horizontal polarization
Number and vertical polarization signal, make many points of original horizontal polarization signals horizontal polarization signals all the way using power splitter, so that many points
Go out out user all the way, improve signal utilization rate, the signal all the way separated more is while increase multiple local oscillation circuits, and frequency band is used
Rate is high, and frequency mixer coordinates the first intermediate frequency amplifier and the signal of combiner output to fall in the range of certain frequency, and multiple signals are mutual
Do not disturb mutually, gain stabilization, noise coefficient are small.
Brief description of the drawings
Fig. 1 is a kind of single circuit diagram for exporting three local oscillator frequency demultipliers of the present utility model.
In figure, 1- signal input parts；2- radio frequency amplifying circuits；3- power splitters；4- tie points；The branch roads of 5- second；6-
One wave filter；7- frequency mixers；The intermediate frequency amplifiers of 8- first；The wave filters of 9- second；10- combiners；The intermediate frequency amplifiers of 11- second；
12- signal output parts；13- local oscillation circuits；14- power circuits；15- first order radio frequency amplifying circuits；16- second level radio frequency
Amplifying circuit；17- third level radio frequency amplifying circuits；18- power supply chips；19- voltage-regulator diodes；20- voltage-stablizers.
Embodiment
Embodiment of the present utility model is described further below in conjunction with the accompanying drawings.Herein it should be noted that
Explanation for these embodiments is used to help understand the utility model, but does not constitute to restriction of the present utility model.This
Outside, as long as technical characteristic involved in each embodiment of the utility model disclosed below does not constitute conflict each other
It can just be mutually combined.
As shown in figure 1, three local oscillator frequency demultipliers of a kind of single output disclosed in the utility model, including two line structures it is identical, according to
Signal input part 1, the radio frequency amplifying circuit 2 of secondary electrical connection, wherein radio frequency amplifying circuit 2 resolves into by power splitter 3 all the way
One branch road 4 and the second branch road 5, another road radio frequency amplifying circuit 2, the branch road 5 of tie point 4 and second are electrically connected with the first filtering
Device 6, frequency mixer 7, the first intermediate frequency amplifier 8, the second wave filter 9, combiner 10, the second intermediate frequency amplifier 11 and signal output part
12, frequency mixer 7 is electrically connected with local oscillation circuit 13, radio frequency amplifying circuit 2, frequency mixer 7, local oscillation circuit 13, first
Audio amplifier 8, the second intermediate frequency amplifier 11 have been electrically connected power circuit 14.Frequency reducing is exported relative to existing two paths of signals
Device, two paths of signals is horizontal polarization signals and vertical polarization signal, makes many points one of original horizontal polarization signals using power splitter 3
Road horizontal polarization signals a, it is only necessary to coaxial wire, so as to separate out user all the way, improve signal utilization rate, many points more
The signal all the way gone out is while increase multiple local oscillation circuits 13, and frequency band utilization rate is high, and frequency mixer 7 coordinates the first intermediate frequency amplifier
8 and combiner 10 export signal fall in the range of certain frequency, multiple signals are not disturbed mutually, gain stabilization, noise coefficient
It is small.
Specifically, first order radio frequency amplifying circuit 15, the second level radio frequency that radio frequency amplifying circuit 2 includes being sequentially connected electrically are put
Big circuit 16 and third level radio frequency amplifying circuit 17, prime low-noise amplifier increase one-level with respect to existing product, have product
There are more high-gain and more preferable noise coefficient, so as to improve the quality for receiving signal.First wave filter 6 is bandpass filter.
Second wave filter 9 is LTCC wave filters.Power circuit 14 includes power supply chip 18, the pole of voltage stabilizing two being sequentially connected electrically
Pipe 19 and voltage-stablizer 20, signal output part are electrically connected with voltage-stablizer 20 there is provided bias voltage, and power supply chip 18 carries for foregoing circuit
For stable power-supplying.
Embodiment of the present utility model is explained in detail above in association with accompanying drawing, but the utility model is not limited to be retouched
The embodiment stated.For a person skilled in the art, it is right in the case where not departing from the utility model principle and spirit
These embodiments carry out a variety of change, modification, replacement and modification, still fall within protection domain of the present utility model.
Claims (5)
1. a kind of three local oscillator frequency demultipliers of single output, it is characterised in that：Including two line structures are identical, the input of the signal that is sequentially connected electrically
End, radio frequency amplifying circuit, wherein the radio frequency amplifying circuit resolves into tie point and the second branch road by power splitter all the way, separately
The radio frequency amplifying circuit, the tie point and second branch road are electrically connected with the first wave filter, frequency mixer, all the way
One intermediate frequency amplifier, the second wave filter, combiner, the second intermediate frequency amplifier and signal output part, the frequency mixer are electrically connected with
Local oscillation circuit, the radio frequency amplifying circuit, the frequency mixer, the local oscillation circuit, first intermediate frequency amplifier,
Second intermediate frequency amplifier has been electrically connected power circuit.
2. three local oscillator frequency demultipliers of single output according to claim 1, it is characterised in that：The radio frequency amplifying circuit include according to
First order radio frequency amplifying circuit, second level radio frequency amplifying circuit and the third level radio frequency amplifying circuit of secondary electrical connection.
3. three local oscillator frequency demultipliers of single output according to claim 1, it is characterised in that：First wave filter is filtered for band logical
Ripple device.
4. three local oscillator frequency demultipliers of single output according to claim 1, it is characterised in that：Second wave filter is filtered for LTCC
Ripple device.
5. three local oscillator frequency demultipliers of single output according to claim 1, it is characterised in that：The power circuit includes electric successively
Power supply chip, voltage-regulator diode and the voltage-stablizer of connection, the signal output part are electrically connected with the voltage-stablizer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720378379.9U CN206611511U (en) | 2017-04-11 | 2017-04-11 | A kind of three local oscillator frequency demultipliers of single output |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720378379.9U CN206611511U (en) | 2017-04-11 | 2017-04-11 | A kind of three local oscillator frequency demultipliers of single output |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206611511U true CN206611511U (en) | 2017-11-03 |
Family
ID=60167270
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720378379.9U Active CN206611511U (en) | 2017-04-11 | 2017-04-11 | A kind of three local oscillator frequency demultipliers of single output |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206611511U (en) |
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2017
- 2017-04-11 CN CN201720378379.9U patent/CN206611511U/en active Active
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