CN110391821A - A kind of signal receiving circuit and satellite signal receiving equipment - Google Patents
A kind of signal receiving circuit and satellite signal receiving equipment Download PDFInfo
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- 230000008878 coupling Effects 0.000 claims description 14
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/06—Receivers
- H04B1/16—Circuits
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/10—Polarisation diversity; Directional diversity
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Abstract
The present invention relates to electronic technology field, providing a kind of signal receiving circuit and satellite signal receiving equipment, signal receiving circuit includes RF Amplifier Module, filter module, mixing output module, signal switching module and power supply switching module；RF Amplifier Module is connect with filter module and signal switching module respectively, and mixing output module is connect with filter module, and signal switching module is connect with power supply switching module, and power supply switching module is connect with mixing output module；Operating voltage is provided by power supply switching module for signal switching module, satellite-signal is received according to the radio frequency amplifying unit of the output voltage of receiver selection work by signal switching module and satellite-signal is amplified, and filters, receiver is output to after Frequency mixing processing, the satellite-signal of corresponding satellite is received by the first radio frequency amplifying unit and the second radio frequency amplifying unit, can receive satellite-signal of the adjacent angular less than two satellite systems of 3 degree of longitudes according to the control signal of receiver.
Description
Technical field
The invention belongs to electronic technology field more particularly to a kind of signal receiving circuits and satellite signal receiving equipment.
Background technique
Microwave frequency changer circuit is indispensable part in satellite signal receiving system, can be by Ku wave band (10.7GHz
~12.75GHz) small-signal got off of satellite transmission amplifies, filter be mixed again with local frequency therein after export and defend
Intermediate-freuqncy signal required for star receiver (950MHz~2150MHz).With the development and satellite launch quantity of Space Science and Technology
Increasing, the adjacent angle of each satellite also becomes closer to, need to receive two satellites that adjacent angular is closer to or
The full frequency band satellite-signal of multiple satellites, however satellite-signal handled by traditional microwave frequency changer circuit is that single satellite connects
The full frequency band satellite-signal of receipts is not able to satisfy the satellite-signal need that user receives two satellites or multiple satellites to greatest extent
It asks.
In conclusion current microwave frequency changer circuit presence can not be to satellite-signals more than two satellites or two satellites
The problem of being handled.
Summary of the invention
In view of this, the embodiment of the invention provides a kind of signal receiving circuit and satellite signal receiving equipment, it is intended to mesh
Preceding microwave frequency changer circuit there are problems that satellite-signals more than two satellites or two satellites can not be handled.
First aspect of the embodiment of the present invention provides a kind of signal receiving circuit, and the signal receiving circuit includes that radio frequency is put
Big module, filter module, mixing output module, signal switching module and power supply switching module；
The RF Amplifier Module is connect with the filter module and the signal switching module respectively, the mixing output
Module is connect with filter module, and the signal switching module is connect with the power supply switching module, the power supply switching module with
The mixing output module connection；
The RF Amplifier Module includes the first radio frequency amplifying unit and the second radio frequency amplifying unit, and first radio frequency is put
Big unit and the second radio frequency amplifying unit work independently, and the first radio frequency amplifying unit is used to receive the of the first satellite
One satellite-signal, and signal enhanced processing is carried out to received first satellite-signal, the second radio frequency amplifying unit is for connecing
The second satellite-signal of the second satellite is received, and signal enhanced processing is carried out to received second satellite-signal；
The signal that the filter module is used to export the RF Amplifier Module is filtered；
The mixing output module is for generating local frequency, and the signal that filter module is exported and the local frequency
It is mixed；
The power supply switching module is used to provide operating voltage for the mixing output module and the signal switching module；
The signal switching module is used to that the radio frequency for receiving satellite-signal to be selected to amplify according to the output voltage of receiver single
Member.
Second aspect of the embodiment of the present invention provides a kind of satellite signal receiving equipment, the satellite signal receiving equipment packet
It includes receiver and connect above-mentioned signal receiving circuit with the receiver.
Signal receiving circuit provided in an embodiment of the present invention and satellite signal receiving equipment are letter by power supply switching module
Number switching module provides operating voltage, by signal switching module according to the output voltage of receiver select work radio frequency amplify it is single
Member receives satellite-signal and amplifies to satellite-signal, filters, is output to receiver after Frequency mixing processing, passes through the first radio frequency
Amplifying unit and the second radio frequency amplifying unit receive the satellite-signal (vertical polarization signal and horizontal polarization signals) of corresponding satellite,
Satellite-signal of the adjacent angular less than two satellite systems of 3 degree of longitudes can be received according to the control signal of receiver, effectively
Ground solves what the presence of microwave current frequency changer circuit can not be handled satellite-signals more than two satellites or two satellites
Problem.
Detailed description of the invention
It to describe the technical solutions in the embodiments of the present invention more clearly, below will be to embodiment or description of the prior art
Needed in attached drawing be briefly described, it should be apparent that, the accompanying drawings in the following description is only of the invention some
Embodiment for those of ordinary skill in the art without any creative labor, can also be according to these
Attached drawing obtains other attached drawings.
Fig. 1 is the structural schematic diagram for the signal receiving circuit that the embodiment of the present invention one provides；
Fig. 2 is another structural schematic diagram for the signal receiving circuit that the embodiment of the present invention one provides；
The exemplary circuit of RF Amplifier Module 110 is former in the signal receiving circuit 100 that Fig. 3 provides for the embodiment of the present invention one
Reason figure；
The exemplary circuit principle of filter module 120 in the signal receiving circuit 100 that Fig. 4 provides for the embodiment of the present invention one
Figure；
The exemplary circuit that output module 130 is mixed in the signal receiving circuit 100 that Fig. 5 provides for the embodiment of the present invention one is former
Reason figure；
The exemplary circuit of power supply switching module 150 is former in the signal receiving circuit 100 that Fig. 6 provides for the embodiment of the present invention one
Reason figure；
The exemplary circuit of signal switching module 140 is former in the signal receiving circuit 100 that Fig. 7 provides for the embodiment of the present invention one
Reason figure.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
It should be noted that term " includes " and their any changes in description and claims of this specification
Shape, it is intended that cover and non-exclusive include.Such as system, product or the equipment comprising a series of units are not limited to arrange
Unit out, but optionally further comprising the step of not listing or unit, or optionally further comprising for these products or set
Standby intrinsic other units.In addition, term " first ", " second " and " third " etc. be for distinguishing different objects, not for
Particular order is described.
The embodiment of the present invention in order to solve microwave current frequency changer circuit exist can not be to two satellites or two satellites more than
Satellite-signal the problem of being handled, provide a kind of signal receiving circuit and satellite signal receiving equipment, cut by power supply
It changes the mold block and provides operating voltage for signal switching module, work is selected according to the output voltage of receiver by signal switching module
Radio frequency amplifying unit receives satellite-signal and amplifies to satellite-signal, filters, is output to receiver after Frequency mixing processing, leads to
It crosses the first radio frequency amplifying unit and the second radio frequency amplifying unit receives satellite-signal (vertical polarization signal and the level of corresponding satellite
Polarized signal), satellite of the adjacent angular less than two satellite systems of 3 degree of longitudes can be received according to the control signal of receiver
Signal.
In order to illustrate above-mentioned signal receiving circuit and satellite signal receiving equipment, carried out below in conjunction with specific embodiment
It is described in detail:
Embodiment one:
The structure that Fig. 1 shows the signal receiving circuit of the offer of the embodiment of the present invention one illustrates only for ease of description
Part related to the embodiment of the present invention, details are as follows:
Referring to Fig. 1, a kind of signal receiving circuit 100 provided in an embodiment of the present invention, signal receiving circuit 100 includes penetrating
Frequency amplification module 110, filter module 120, mixing output module 130, signal switching module 140 and power supply switching module 150.
Above-mentioned RF Amplifier Module 110 is connect with filter module 120 and signal switching module 140 respectively, mixing output mould
Block 130 is connect with filter module 120, and signal switching module 140 is connect with power supply switching module 150, power supply switching module 150 with
Output module 130 is mixed to connect.
RF Amplifier Module 110 includes 111 second radio frequency amplifying unit 112 of the first radio frequency amplifying unit, and the first radio frequency is put
Big unit 111 and the second radio frequency amplifying unit 112 work independently, and the first radio frequency amplifying unit 111 is for receiving the first satellite
First satellite-signal, and signal enhanced processing is carried out to received first satellite-signal, the second radio frequency amplifying unit 112 is for connecing
The second satellite-signal of the second satellite is received, and signal enhanced processing is carried out to received second satellite-signal.
The signal that filter module 120 is used to export RF Amplifier Module 110 is filtered.
Mixing output module 130 is carried out for generating local frequency, and by the signal of filter module output and local frequency
Mixing.
Power supply switching module 150 is used to provide operating voltage for mixing output module 130 and signal switching module 140.
The radio frequency amplifying unit that reception satellite-signal is selected according to the output voltage of receiver of signal switching module 140.
In a particular application, above-mentioned first radio frequency amplifying unit 111 puts the first satellite-signal progress signal received
The first radiofrequency signal is exported after big processing to filter unit 120, the second radio frequency amplifying unit 111 believes the second satellite received
Number carry out signal enhanced processing after export the second radiofrequency signal to filter unit 120.
In a particular application, above-mentioned first radio frequency amplifying unit 111 and above-mentioned second radio frequency amplifying unit 112 with filtering
Module 120 connects, and the signal that above-mentioned filter module 120 can export the first radio frequency amplifying unit 111 is filtered, and also can
The signal of second radio frequency amplifying unit 112 output is filtered.
In a particular application, above-mentioned power supply switching module 150 is connect with power supply, is by power supply switching module 150
The DC supply of 130 offer+5V of output module is provided, and provides operating voltage for above-mentioned signal switching module, passes through electricity
Source switching module 150 is that the working power that signal switching module 140 provides makes the first radio frequency amplifying unit 111 and the second radio frequency
Amplifying unit 112 works independently.
In a particular application, above-mentioned filter module includes that mirror image inhibits bandpass filter, inhibits bandpass filtering by mirror image
Device is filtered into the frequency range (10.7GHZ-12.75GHZ) of need of work to received satellite-signal.
In one embodiment, as shown in Fig. 2, above-mentioned signal switching module 140 includes 141 He of the first signal switch unit
Second signal switch unit 142.
Above-mentioned first signal switch unit 141 connects with power supply switching module 150 and the first radio frequency amplifying unit 111 respectively
It connects, above-mentioned second signal switch unit 142 is connect with power supply switching module 150 and the second radio frequency amplifying unit 112 respectively.
In a particular application, above-mentioned first signal switch unit 141 is used for the output voltage control first according to receiver
Radio frequency amplifying unit 111 receives the horizontal polarization signals of the first satellite or the vertical polarization signal of the first satellite, above-mentioned second letter
Number switch unit 142 is used to receive the water of the second satellite according to the second radio frequency of output voltage control amplifying unit 112 of receiver
The vertical polarization signal of flat polarized signal or the second satellite.
In one embodiment, as shown in Fig. 2, above-mentioned first radio frequency amplifying unit 111 include the first amplifying unit 111a,
Second amplifying unit 111b and the first coupling unit 111c.
First amplifying unit 111a is connect with the second amplifying unit 111b, the second amplifying unit 111b and the first coupling unit
111c connection, the first coupling unit 111c are connect with filter module 120.
In a particular application, by the first amplifying unit 111a and the second amplifying unit 111b to the satellite-signal received
Place is filtered by filter module 120 again after the first coupling unit 111c is coupled after carrying out two-stage enhanced processing
Reason.
In one embodiment, above-mentioned second radio frequency amplifying unit 112 includes third amplifying unit 112a, the 4th amplification list
First 112b and the second coupling unit 112c.
Above-mentioned third amplifying unit 112a is connect with the 4th amplifying unit 112b, and the 4th amplifying unit 112b is coupled with second
Unit 112c connection, the second coupling unit 112c are connect with filter module 120.
In a particular application, by third amplifying unit 112a and the 4th amplifying unit 112b to the satellite-signal received
It is filtered again by filter module 120 after the second coupling unit 112c carries out coupling processing after carrying out two-stage enhanced processing
Processing.
In one embodiment, above-mentioned mixing output module 130 includes starting of oscillation unit 131, mixing unit 132 and output
Unit 133.
Above-mentioned starting of oscillation unit 131 is connect with mixing unit 132, and mixing unit 132 is connect with filter module 120, and mixing is single
Member 132 is connect with output unit 133.
In a particular application, above-mentioned starting of oscillation unit 131 is used to generate the local oscillation signal of two kinds of frequency ranges, and one is low-frequency ranges
First local oscillation signal, such as frequency are the local oscillation signal of 9.756GHZ, and another kind is the second local oscillation signal of high band, such as frequency
Rate is the local oscillation signal of 10.6GHZ.And the first chip in mixing unit controls starting of oscillation unit according to the control signal of receiver
131 switch between the first local oscillation signal and the second local oscillation signal, i.e. control starting of oscillation unit 131 exports the first local oscillation signal
The second local oscillation signal is exported to mixing unit 132 to mixing unit 132, or control starting of oscillation unit 131.
Above-mentioned mixing unit 132 is for exporting intermediate-freuqncy signal after being mixed filtered signal with local oscillation signal.
In a particular application, when mixing unit receives what filtered first radiofrequency signal was exported with starting of oscillation unit 131
When the first local oscillation signal, mixing unit 132 exports first after carrying out Frequency mixing processing to the first radiofrequency signal and the first local oscillation signal
Intermediate-freuqncy signal is to output unit 133, when mixing unit receives what filtered second radiofrequency signal was exported with starting of oscillation unit 131
When the first local oscillation signal, mixing unit 132 exports second after carrying out Frequency mixing processing to the second radiofrequency signal and the first local oscillation signal
Intermediate-freuqncy signal is to output unit 133, when mixing unit receives what filtered first radiofrequency signal was exported with starting of oscillation unit 131
After second local oscillation signal, mixing unit 132 carries out Frequency mixing processing to the first radiofrequency signal and the second local oscillation signal, exports in third
Frequency signal to output unit 133, the second radiofrequency signal and starting of oscillation unit 131 after mixing unit accepts filter export second
When local oscillation signal, mixing unit 132 exports the 4th intermediate frequency after carrying out Frequency mixing processing to the second radiofrequency signal and the second local oscillation signal
Signal is to output unit.By output unit to above-mentioned first intermediate-freuqncy signal, the second intermediate-freuqncy signal, third intermediate-freuqncy signal and the 4th
Intermediate-freuqncy signal is amplified, is exported after steady pressure treatment to receiver.
It should be noted that above-mentioned mixing unit 132 is connect with output unit 133, output unit 133 and receiver connect
It connects, and obtained intermediate-freuqncy signal is output to receiver.Receiver refers to that reception satellite-signal is (received in the present embodiment to defend
Star signal is the intermediate-freuqncy signal of mixing unit output) and after handling received signal output to display equipment (television set,
The equipment such as set-top box) equipment.
It should also be noted that, the L-BAND frequency of intermediate-freuqncy signal (IF) are as follows: 10.7GHZ-9.75GHZ=0.95GHZ；
11.7GHZ-9.75GHZ=1.95GHZ.Intermediate-freuqncy signal (IF) H-BAND frequency are as follows: 11.7GHZ-10.6GHZ=1.1GHZ；
12.75GHZ-10.6GHZ=2.15GHZ.
In one embodiment, above-mentioned power supply switching module 150 includes power output unit 151 and switch control unit
152。
Power output unit 151 is connect with mixing output module 130, switch control unit 152 and power output unit 151
Connection, switch control unit 152 are connect with signal switching module 140.
In a particular application, power supply switching module 150 switches under the action of the pulse signal of receiver to above-mentioned first
The working power of signal switch unit and above-mentioned second signal switch unit is penetrated so that radio frequency amplifying circuit is independently operated on first
Frequency amplifying circuit or the second radio frequency amplifying circuit.By the work for switching the first signal switch unit and second signal switch unit
Power supply switches received vertical polarization signal (18V) and horizontal polarization signals (13V), realizes to any two satellite adjacent angulars
Degree (arranges such as: the 42.0 ° of worlds E/ Turkey 4A, 904 45.0 ° of E in 3 degree of coordinates；53.0 ° of 56.0 ° of E/ express AT1 of express AM6
E；Asia 125.0 ° of E of No. 9 122.0 ° of E/ culminant star 6A；No. 19 805 169.0E of the world 166.0 ° of E/ in the world etc.) satellite-signal
It receives.Intermediate-freuqncy signal is exported with pulse signal (0/22KHZ) by receiver, to control the radio frequency amplifying unit of switch operating,
To realize the signal for receiving different satellites.The antenna of signal is received further according to output voltage (13V/18V) switching of receiver, with
Just the horizontal polarization signals and vertical polarization signal of satellite are received.
As shown in figure 3, as an embodiment of the present invention, Fig. 3 shows radio frequency in the signal receiving circuit 100 of the present embodiment
The exemplary circuit schematic diagram of amplification module 110.
Referring to Fig. 3, above-mentioned RF Amplifier Module 110 includes the first radio frequency amplifying unit 111 as a kind of implementation
With the second radio frequency amplifying unit 112.Above-mentioned first radio frequency amplifying unit 111 includes first antenna V1, the first field-effect tube Q1, the
One resistance R1, first capacitor C1, second resistance R2, the second capacitor C2, third capacitor C3, the 4th capacitor C4, the second antenna H1,
Two field-effect tube Q2,3rd resistor R3, the 5th capacitor C5, the 4th resistance R4, the 6th capacitor C6, the 7th capacitor C7, the 8th capacitor
C8, third field-effect tube Q3, the 5th resistance R5, the 9th capacitor C9, the 6th resistance R6, the tenth capacitor C10, the 11st capacitor C11
And the 12nd capacitor C12.
First antenna V1 is connect with the first end of the first field-effect tube Q1, the first end of the first field-effect tube Q1 and the first electricity
The first end connection of R1 is hindered, the third end ground connection of the first field-effect tube Q1, the second end of first resistor R1 is with first capacitor C1's
First end connection, the second end ground connection of first capacitor C1, the second end of the first field-effect tube Q1 and the first end of second resistance R2
Electrical connection, the second end of second resistance R2 are connect with the first end of the second capacitor C2, the second end ground connection of the second capacitor C2, third
The first end of capacitor C3 is connect with the second end of the first field-effect tube Q1, and the of the first end of the 4th capacitor C4 and third capacitor C3
One end connection, the second end of third capacitor C3 are connect with the second end of the 4th capacitor C4, the second end and third of the 4th capacitor C4
The first end of field-effect tube Q3 connects, and the second antenna H1 is connect with the first end of the second field-effect tube Q2, the second field-effect tube Q2
Third end ground connection, the first end of 3rd resistor R3 connect with the first end of the second field-effect tube Q2, the second of 3rd resistor R3
End connect with the first end of the 5th capacitor C5, and the second end of the 5th capacitor C5 is grounded, the second end of the second field-effect tube Q2 and the
The first end of four resistance R4 connects, and the second end of the 4th resistance R4 is connect with the first end of the 6th capacitor C6, the 6th capacitor C6's
Second end ground connection, the first end of the 7th capacitor C7 connect with the first end of the 4th resistance R4, the second end of the 7th capacitor C7 and the
The second end of eight capacitor C8 connects, and the first end of the 8th capacitor C8 is connect with the first end of the 7th capacitor C7, the 8th capacitor C8's
Second end is connect with the first end of third field-effect tube Q3, the third end of third field-effect tube Q3 ground connection, and the of the 5th resistance R5
One end is connect with the first end of third field-effect tube Q3, and the second end of the 5th resistance R5 is connect with signal switching module 140, and the 9th
The first end of capacitor C9 is connect with the first end of the 5th resistance R5, the second end of the 9th capacitor C9 ground connection, and the of the 6th resistance R6
One end is connect with the second end of third field-effect tube Q3, and the second end of the 6th resistance R6 is connect with the first end of the tenth capacitor C10,
The second end of tenth capacitor C10 is grounded, and the first end of the 11st capacitor C11 is connect with the second end of third field-effect tube Q3, the
The second end of 11 capacitor C11 is connect with the second end of the 12nd capacitor C12, the first end and the 11st of the 12nd capacitor C12
The first end of capacitor C11 connects, and the second end of the 12nd capacitor C12 is connect with filter module 120.
Above-mentioned second radio frequency amplifying unit 112 includes third antenna H2, the 4th field-effect tube Q4, the 7th resistance R7, the tenth
Three capacitor C13, the 8th resistance R8, the 14th capacitor C14, the 15th capacitor C15, the 16th capacitor C16, the 4th antenna V2,
Five field-effect tube Q5, the 9th resistance R9, the 17th capacitor C17, the tenth resistance R10, the 18th capacitor C18, the 19th capacitor
C19, the 20th capacitor C20, the 6th field-effect tube Q6, eleventh resistor R11, the 21st capacitor C21, twelfth resistor R12,
22nd capacitor C22, the 23rd capacitor C23, the 24th capacitor C24.
Third antenna H2 is connect with the first end of the 4th field-effect tube Q4, the first end of the 4th field-effect tube Q4 and the 7th electricity
Hinder the first end connection of R7, the third end ground connection of the 4th field-effect tube Q4, the second end and the 13rd capacitor C13 of the 7th resistance R7
First end connection, the second end ground connection of the 13rd capacitor C13, the of the second end of the 4th field-effect tube Q4 and the 8th resistance R8
One end electrical connection, the second end of the 8th resistance R8 are connect with the first end of the 14th capacitor C14, and the second of the 14th capacitor C14
End ground connection, the first end of the 15th capacitor C15 are connect with the second end of the 4th field-effect tube Q4, and the first of the 16th capacitor C16
End is connect with the first end of the 15th capacitor C15, and the second end of the 15th capacitor C15 and the second end of the 16th capacitor C16 connect
It connects, the second end of the 16th capacitor C16 is connect with the first end of the 6th field-effect tube Q6, the 4th antenna V2 and the 5th field-effect tube
The first end of Q5 connects, the third end ground connection of the 5th field-effect tube Q5, the first end and the 5th field-effect tube Q5 of the 9th resistance R9
First end connection, the second end of the 9th resistance R9 connect with the first end of the 17th capacitor C17, the of the 17th capacitor C17
Two ends ground connection, the second end of the 5th field-effect tube Q5 are connect with the first end of the tenth resistance R10, the second end of the tenth resistance R10
Connect with the first end of the 18th capacitor C18, the second end of the 18th capacitor C18 ground connection, the first end of the 19th capacitor C19 with
The first end of tenth resistance R10 connects, and the second end of the 19th capacitor C19 is connect with the second end of the 20th capacitor C20, and second
The first end of ten capacitor C20 is connect with the first end of the 19th capacitor C19, the second end of the 20th capacitor C20 and the 6th effect
Should pipe Q6 first end connection, the 6th field-effect tube Q6 third end ground connection, the first end of eleventh resistor R11 with the 6th effect
Should pipe Q6 first end connection, the second end of eleventh resistor R11 connect with signal switching module 140, the 21st capacitor C21
First end connect with the first end of eleventh resistor R11, the second end of the 21st capacitor C21 ground connection, twelfth resistor R12
First end connect with the second end of the 6th field-effect tube Q6, the second end of twelfth resistor R12 and the 22nd capacitor C22's
First end connection, the second end ground connection of the 22nd capacitor C22, the first end and the 6th field-effect tube of the 23rd capacitor C23
The second end of Q6 connects, and the second end of the 23rd capacitor C23 is connect with the second end of the 24th capacitor C24, and the 24th
The first end of capacitor C24 is connect with the first end of the 23rd capacitor C23, the second end and filtering mould of the 24th capacitor C24
Block 120 connects.
In a particular application, first antenna V1 is used to receive the first vertical polarization signal of the first satellite, the second antenna H1
For receiving the first level polarized signal of the first satellite, third antenna H2 is used to receive the second horizontal polarization letter of the second satellite
Number, the 4th antenna V2 is used to receive the second vertical polarization signal of the second satellite.
In a particular application, satellite-signal is received by antenna (V/H), then feed transmission is sent to HORN mouthfuls, by HORN mouthfuls
Receive satellite-signal (horizontal polarization signals (H) and the vertical polarization signal (V) of two groups of H, V orthogonal polarization oscillator inputs
Radio frequency (RF) signal, Jing Ergen probe (L-PIN and I-PIN) be transmitted to the first radio frequency amplifying circuit and the second radio frequency amplification electricity
Road.
In a particular application, the first vertical polarization signal and the second antenna H1 that first antenna V1 is received receive
One horizontal polarization signals are after the first field-effect tube Q1 and the second field-effect tube Q2 carries out first order amplification, by third capacitor
C3, the 4th capacitor C4, the 7th capacitor C7 and the 8th capacitor C8 are coupled, and carry out the second level using third field-effect tube Q3
Amplification, is output to filter module 120 after being coupled further across the 11st capacitor C11 and the 12nd capacitor C12.
In a particular application, received second horizontal polarization signals of third antenna H2 and the 4th antenna V2 receive second
Vertical polarization signal is after the 4th field-effect tube Q4 and the 5th field-effect tube Q5 carries out first order amplification, by the 15th capacitor
C15, the 16th capacitor C16, the 19th capacitor C19 and the 20th capacitor C20 are coupled, using the 6th field-effect tube Q6
Second level amplification is carried out, is output to filtering after being coupled further across the 23rd capacitor C23 and the 24th capacitor C24
Module 120.
As shown in figure 4, above-mentioned filter module 120 includes that mirror image inhibits bandpass filter BPF, mirror image inhibits bandpass filter
The input terminal of BPF connect 112 with the first radio frequency amplifying unit 111 and the second radio frequency amplifying unit, and mirror image inhibits bandpass filter
The output end of BPF is connect with mixing output module 130.
As shown in figure 5, above-mentioned mixing output module 130 includes the first crystal oscillator XO1, the 25th capacitor C25, the 26th
Capacitor C26, the 27th capacitor C27, the 28th capacitor C28, the 29th capacitor C29, thirteenth resistor R13, the first core
Piece U1, the 30th capacitor C30, the 31st capacitor C31, the 32nd capacitor C32, the 14th resistance R14, the 33rd capacitor
C33, the 15th resistance R15 and voltage stabilizing chip U2.
In the present embodiment, above-mentioned first chip U1 is the integrated frequency converter of model TFF101x, and TFF101x refers to one
Series for Ku wave band (low noise of the satellite receiving system of 10.7GHz to 12.75GHz) integrates frequency converter, including
TFF1014, TFF1015, TFF1017 and TFF1018.In the present embodiment, the model TFF1017 of above-mentioned first chip U1.
In a particular application, the first pin 1 of above-mentioned first chip U1, second pin 2, the 5th pin 5, the 6th pin 6,
7th pin 7, the 13rd pin 13, the 15th pin 15 are ground terminal and are grounded, and the third pin 3 of the first chip U1 is
The 4th pin 4 of first input end RF1, the first chip U1 are second output terminal RF2, and the 8th pin 8 of the first chip U1 is letter
The 9th pin 9 of number input terminal LF, the first chip U1 are benchmark voltage end VREG, and the tenth pin 10 of the first chip U1 is signal
The 11st pin 11 of output end HB, the first chip U1 are the first crystal oscillator end XO1, and the 12nd pin 12 of the first chip U1 is the
The 14th pin 14 of two crystal oscillator end XO2, the first chip U1 are power end VCC, and the 16th pin 16 of the first chip U1 is defeated
Outlet IF.
The first end of above-mentioned first crystal oscillator XO1 is connect with the first end of the 25th capacitor C25, and the of the first crystal oscillator XO1
Two ends are connect with the first end of the 26th capacitor C26, the second end ground connection of the 25th capacitor C25, the 26th capacitor C26
Second end ground connection, the first end of the first crystal oscillator XO1 connect with the 11st pin 11 of the first chip U1, the first crystal oscillator XO1's
Second end is connect with the 12nd pin 12 of the first chip U1, and the first pin 1 and the signal switching module 140 of the first chip U1 connects
It connects, the first end of the 27th capacitor C27 is connect with the first end of thirteenth resistor R13, the second end of the 27th capacitor C27
It is connect with the first end of the 28th capacitor C28, the second end of the 28th capacitor C28 and the second end of thirteenth resistor R13
Connection, the first end of the 29th capacitor C29 connect with the second end of the 28th capacitor C28, and the of the 29th capacitor C29
Two ends ground connection, the first end of the 29th capacitor C29 are connect with the 9th pin 9 of the first chip U1, the 29th capacitor C29's
Second end is connect with the 8th pin 8 of the first chip U1, and the first end of the 30th capacitor C30 is drawn with the 16th of the first chip U1
Foot 16 connects, and the second end of the 30th capacitor C30 is connect with the first end of the 31st capacitor C31, the 31st capacitor C31's
Second end is signal output end (connecting with receiver), the first end of the 32nd capacitor C32 and the first of the 30th capacitor C30
End connection, the second end ground connection of the 32nd capacitor C32, the of the first end of the 14th resistance R14 and the 32nd capacitor C32
One end connection, the second end of the 14th resistance R14 are connect with the input terminal of voltage stabilizing chip U2, the ground connection termination of voltage stabilizing chip U2
Ground, the output end of voltage stabilizing chip are connect with the second end of the 31st capacitor C31, the first end and first of the 15th resistance R15
The 14th pin 14 of chip U1 connects, and the second end of the 15th resistance R15 is connect with the first end of the 33rd capacitor C33,
The second end of 33rd capacitor C33 is connect with receiver.
In a particular application, above-mentioned first crystal oscillator is the crystal oscillator of 25MHz.
As shown in fig. 6, above-mentioned power supply switching module 150 includes first switch tube Q7, the 16th resistance R16, the 17th electricity
Hinder R17, the second chip U3, the 34th capacitor C34, the 18th resistance R18, the 19th resistance R19, second switch Q8, the
35 capacitor C35, the 36th capacitor C36, the 20th resistance R20, first diode D1, the second diode D2, the 20th
One resistance R21, the 22nd resistance R22, the 37th capacitor C37, third switching tube Q9, the 23rd resistance R23, the 4th open
Close pipe Q4 and the 24th resistance R24.
In the present embodiment, above-mentioned first switch tube Q7 is double NPN transistors of model PUMX1, first switch tube
The first pin 1 of Q7 is the emitter of the first NPN transistor, and the second pin 2 of first switch tube Q7 is the first NPN type crystal
The base stage of pipe, the collector that the third pin 3 of first switch tube Q7 is the second NPN transistor, the 4th of first switch tube Q7 the
Pin 4 is the emitter of the second NPN transistor, the 5th pin 5 of first switch tube Q7 is the base of the second NPN transistor
Pole, the 6th pin 6 of first switch tube Q7 are the collector of the first NPN transistor.
In the present embodiment, above-mentioned second chip U3 is the 4*1 switch controller that signal is DS4T153, the second chip U3
The first pin 1 be first switch end SW1, the second pin 2 of the second chip is second switch end SW2, the of the second chip U3
Three pins 3 are grounding pin, and the 4th pin 4 of the second chip U3 is signal incoming end SIN, the 5th pin 5 of the second chip U3
For power pins VCC, the 6th pin 6 of the second chip U3 is third switch terminals SW3, and the 7th pin 7 of the second chip U3 is to adjust
The 8th pin 8 of economize on electricity resistance input terminal SOC, the second chip U3 are the 4th switch terminals SW4.
In a particular application, the first pin 1 connection of the first end and first switch tube of the 16th resistance R16, the 16th
The second end of resistance R16 is grounded, and the third pin 3 of first switch tube Q7 is connect with the first pin 1 of the second chip U3, and first opens
The 5th pin 5 for closing pipe Q7 is connect with the first end of third switching tube Q9, the second pin 2 of first switch tube Q7 and the 4th switch
The first end of pipe Q10 connects, and the 4th pin 4 of first switch tube Q7 is connect with the second pin 2 of the second chip U3, first switch
The 6th pin 6 of pipe Q7 is connect with the first end of the 17th resistance R17, the second end ground connection of the 17th resistance R17, and the 34th
The first end of capacitor C334 is connect with the 4th pin 4 of the second chip U3, the second end ground connection of the 34th capacitor C34, and the tenth
The first end of eight resistance R18 is connect with the first end of the 34th capacitor C34, the second end and the second core of the 18th resistance R18
The 6th pin 6 of piece U3 connects, and the first end of the 19th resistance R19 is connect with the 8th pin 8 of the second chip U3, the 19th electricity
The second end of resistance R19 is connect with the 7th pin 7 of the second chip U3, the first end and the 18th resistance of the 35th capacitor C35
The second end of R18 connects, and the second end of the 35th capacitor C35 is connect with the first end of second switch Q8, the 36th electricity
The first end for holding C36 is connect with the second end of the 19th resistance R19, the second end and second switch of the 36th capacitor C36
The second end of Q8 connects, and the third end of second switch Q8 is connect with the second end of the 19th resistance R19, the 20th resistance R20
First end connect with the first end of the 36th capacitor C36, the second end of the 20th resistance R20 and the 36th capacitor C36
Second end connection, the cathode of first diode D1 connect with the second end of the 20th resistance R20, the anode of first diode D1
Ground connection, the cathode of the second diode D2 are connect with the first end of the 35th capacitor C35, the plus earth of the second diode D2,
The first end of 21st resistance R21 is connect with receiver, the second end and the 37th capacitor C37 of the 21st resistance R21
First end, the second end of the 37th capacitor C37 connect with the first end of the 22nd resistance R22, the 22nd resistance R22
Second end connect with the second end of the 20th resistance R20, the of the first end of the 23rd resistance R23 and third switching tube Q9
One end connection, the second end of third switching tube Q9 are connect with the second end of the 23rd resistance R23, the 23rd resistance R23's
Second end is connect with the first end of the 37th capacitor C37, the third end of third switching tube Q9 and the first signal switch unit 141
Connection, the first end of the 24th resistance R24 are connect with the first end of the 4th switching tube Q10, and the second of the 24th resistance R24
End is connect with the second end of the 4th switching tube Q4, and the third end of the 4th switching tube Q4 is connect with second signal switch unit 142, the
The second end of 24 resistance R24 is connect with the first end of the 37th capacitor C37.
As shown in fig. 7, above-mentioned signal switching module 140 includes that the first signal switch unit 141 and second signal switching are single
Member 142.First signal switch unit 141 includes third chip U4, the 38th capacitor C38, the 25th resistance R25, second
16 resistance R26, the 27th resistance R27, the 39th capacitor C39 and third diode D3.
In the present embodiment, third chip U4 is the suitching type bias generator of model ZXNB4202, third chip U4
The first pin 1 be the first signal output end G1, the second pin 2 of third chip U4 is the first signal input end D1, third core
The third pin 3 of piece U4 is second signal input terminal D2, and the 4th pin 4 of third chip U4 is second signal output end G2, the
The 5th pin 5 of three chip U4 is third signal input part D3, and the 6th pin 6 of third chip U4 is third signal output end
The 9th pin 9 of G3, third chip U4 are signal triggering end Csub, and the 11st pin 11 of third chip U4 is that fourth signal is defeated
The 12nd pin 12 of outlet HB, third chip U4 are voltage output end Vout, and the 14th pin 14 of third chip U4 is to connect
Ground terminal, the 15th pin 15 of third chip U4 are the first signal end RcaIM, and the 16th pin 16 of third chip U4 is second
Signal end RcaIM.
The first pin 1, second pin 2, third pin 3, the 4th pin 4, the 5th pin the 5, the 6th of third chip U4 draws
Foot 6 is connect with the first radio frequency amplifying unit 111.
In a particular application, the 9th pin 9 of the first end of above-mentioned 38th capacitor C38 and above-mentioned third chip U4 connect
It connects, the second end ground connection of the 38th capacitor C38, the first end of the 25th resistance R25 is drawn with the 16th of third chip U4
Foot 16 connects, the second end of the 25th resistance R25 ground connection, and the of the first end of the 26th resistance R26 and third chip U4
The connection of 15 pins 15, the second end ground connection of the 26th resistance R26, the first end and third chip of the 27th resistance R27
The 12nd pin 12 of U4 connects, and the second end of the 27th resistance R27 is connect with the first end of the 39th capacitor C39, the
The second end of 39 capacitor C39 is grounded, and the second end of the 27th resistance R27 is connect with power supply switching module 150, and the three or two
Pole pipe D3 anode connect with the 11st pin 11 of third chip U4, the cathode of third diode D3 be mixed output module
130 connections.
25th resistance R25 and the 26th resistance R26 is used to adjust the operating current of third chip U4.
In one embodiment, above-mentioned second signal switch unit 142 includes fourth chip U5, the 40th capacitor C40, the
28 resistance R28, the 29th resistance R29, the 30th resistance R30, the 41st capacitor C41 and the 4th diode D4.
In the present embodiment, fourth chip U5 is the suitching type bias generator of model ZXNB4202, fourth chip U5
The first pin 1 be the first signal output end G1, the second pin 2 of fourth chip U5 is the first signal input end D1, the 4th core
The third pin 3 of piece U5 is second signal input terminal D2, and the 4th pin 4 of fourth chip U5 is second signal output end G2, the
The 5th pin 5 of four chip U5 is third signal input part D3, and the 6th pin 6 of fourth chip U4 is third signal output end
The 9th pin 9 of G3, fourth chip U5 are signal triggering end Csub, and the 11st pin 11 of fourth chip U4 is that fourth signal is defeated
The 12nd pin 12 of outlet HB, fourth chip U5 are voltage output end Vout, and the 14th pin 14 of fourth chip U5 is to connect
Ground terminal, the 15th pin 15 of fourth chip U5 are the first signal end RcaIM, and the 16th pin 16 of fourth chip U5 is second
Signal end RcaIM.
The first pin 1, second pin 2, third pin 3, the 4th pin 4, the 5th pin the 5, the 6th of fourth chip U5 draws
Foot 6 is connect with the second radio frequency amplifying unit 112.
28th resistance R28 and the 29th resistance R29 is used to adjust the operating current of fourth chip U5.
In a particular application, the first end of the 40th capacitor C40 is connect with the 9th pin 9 of fourth chip U5, and the 40th
The second end of capacitor C40 is grounded, and the first end of the 28th resistance R28 is connect with the 15th pin 15 of fourth chip U5, the
The second end of 28 resistance R28 is grounded, and the first end of the 29th resistance R29 and the 16th pin 16 of fourth chip U5 connect
It connects, the second end ground connection of the 29th resistance R29, the first end of the 30th resistance R30 and the 12nd pin of fourth chip U5
12 connections, the second end of the 30th resistance R30 connect with power supply switching module 150, the first end of the 41st capacitor C41 and the
The second end of 30 resistance R30 connects, the second end ground connection of the 41st capacitor C41, the anode and the 4th of the 4th diode D4
The 11st pin 11 of chip U5 connects, and the cathode of the 4th diode D4 is connect with mixing output module 130.
Above-mentioned signal receiving circuit is described further below in conjunction with working principle and Fig. 3:
Second chip U2 controls first switch tube Q7 according to the pulse signal that receiver issues, so that first switch tube Q7 tune
Whole output voltage is simultaneously output in the third chip U4 in the first signal switch unit 141 by third switching tube Q9 respectively, or
It is output in the fourth chip U5 of second signal switch unit 142 by the 4th switching tube Q10, finally makes RF Amplifier Module only
Work is stood in the first radio frequency amplifying unit 111 or the second radio frequency amplifying unit 112.Pass through third chip U4 or U5 pairs of fourth chip
The local oscillation signal of crystal oscillator XO1 output and the horizontal polarization signals and vertical polarization signal of RF Amplifier Module output carry out
Switching, then the intermediate-freuqncy signal output that processing obtains is given into the receiver that output unit connects.The arteries and veins issued according to receiver
Rush the satellite-signal that signal switches two satellites.By third chip U4 or fourth chip U4 according to the voltage that receiver exports come
Switch horizontal polarization signals or vertical polarization signal, to realize that double star receives the Whole frequency band satellite signal receiving of Ku wave band.It needs
It is noted that issuing 13V and 18V polarizing voltage by receiver to control the selection of intermediate-freuqncy signal access.It is penetrated for first
Frequency amplifying unit 111, when the receiver that the first signal switch unit 141 receives output voltage be 13V, then switch to and pass through
First antenna V1 receives the receiving path of the first vertical polarization signal, when the first signal switch unit 141 receives receiver
Output voltage is 18V, then switches to the receiving path that first level polarized signal is received by the second antenna H1.It is penetrated for second
Frequency amplifying unit 112 then switches to and passes through when the output voltage that second signal switch unit 142 receives receiver is 13V
4th antenna V2 receives the receiving path of the second vertical polarization signal, when to receive receiver defeated for second signal switch unit 142
When voltage is 18V out, then the receiving path that the second horizontal polarization signals are received by third antenna H2 is switched to.
A kind of signal receiving circuit provided in this embodiment provides work by power supply switching module for signal switching module
Voltage selects the radio frequency amplifying unit of work to receive satellite-signal simultaneously by signal switching module according to the output voltage of receiver
Satellite-signal is amplified, filter, is output to receiver after Frequency mixing processing, passes through the first radio frequency amplifying unit and the second radio frequency
Amplifying unit receives the satellite-signal (vertical polarization signal and horizontal polarization signals) of corresponding satellite, can be according to the control of receiver
Signal processed receives satellite-signal of the adjacent angular less than two satellite systems of 3 degree of longitudes, efficiently solves microwave current change
Frequency circuit there are problems that satellite-signals more than two satellites or two satellites can not be handled.
Embodiment two:
Satellite signal receiving equipment 10 provided by Embodiment 2 of the present invention, above-mentioned satellite signal receiving equipment include that signal connects
Receive circuit 100 and receiver 200.
It should be noted that satellite signal receiving equipment provided in an embodiment of the present invention, as believing with shown in Fig. 1 of the present invention
Number receive circuit embodiment be based on same design, bring technical effect is identical as embodiment illustrated in fig. 1 of the present invention, specifically
Content can be found in the narration in embodiment illustrated in fig. 1 of the present invention, and details are not described herein again.
Therefore, satellite signal receiving equipment provided in this embodiment can equally be cut by power supply switching module for signal
Change the mold block provide operating voltage, by signal switching module according to the output voltage of receiver select work radio frequency amplifying unit come
It receives satellite-signal and satellite-signal is amplified, filter, is output to receiver after Frequency mixing processing, amplified by the first radio frequency
Unit and the second radio frequency amplifying unit receive the satellite-signal (vertical polarization signal and horizontal polarization signals) of corresponding satellite, can
Adjacent angular is received less than the satellite-signal of two satellite systems of 3 degree of longitudes according to the control signal of receiver, is effectively solved
Microwave current frequency changer circuit of having determined there are problems that satellite-signals more than two satellites or two satellites can not be handled.
The above is merely preferred embodiments of the present invention, be not intended to limit the invention, it is all in spirit of the invention and
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within principle.
Claims (10)
1. a kind of signal receiving circuit, which is characterized in that the signal receiving circuit include RF Amplifier Module, filter module,
It is mixed output module, signal switching module and power supply switching module；
The RF Amplifier Module is connect with the filter module and the signal switching module respectively, the mixing output module
Connect with filter module, the signal switching module is connect with the power supply switching module, the power supply switching module with it is described
It is mixed output module connection；
The RF Amplifier Module includes the first radio frequency amplifying unit and the second radio frequency amplifying unit, and the first radio frequency amplification is single
The first and described second radio frequency amplifying unit works independently, and the first radio frequency amplifying unit is defended for receiving the first of the first satellite
Star signal, and signal enhanced processing is carried out to received first satellite-signal, the second radio frequency amplifying unit is for receiving the
Second satellite-signal of two satellites, and signal enhanced processing is carried out to received second satellite-signal；
The signal that the filter module is used to export the RF Amplifier Module is filtered；
The mixing output module is carried out for generating local frequency, and by the signal of filter module output and the local frequency
Mixing；
The power supply switching module is used to provide operating voltage for the mixing output module and the signal switching module；
The signal switching module is used to select to receive according to the output voltage of receiver the radio frequency amplifying unit of satellite-signal.
2. signal receiving circuit according to claim 1, which is characterized in that the signal switching module includes the first signal
Switch unit and second signal switch unit；
First signal switch unit is connect with the power supply switching module and the first radio frequency amplifying unit respectively, described
Second signal switch unit is connect with the power supply switching module and the second radio frequency amplifying unit respectively.
3. signal receiving circuit according to claim 1, which is characterized in that the first radio frequency amplifying unit includes first
Amplifying unit, the second amplifying unit and the first coupling unit；
First amplifying unit is connect with second amplifying unit, second amplifying unit and first coupling unit
Connection, first coupling unit are connect with the filter module.
4. signal receiving circuit according to claim 1, which is characterized in that the second radio frequency amplifying unit includes third
Amplifying unit, the 4th amplifying unit and the second coupling unit；
The third amplifying unit is connect with the 4th amplifying unit, the 4th amplifying unit and second coupling unit
Connection, second coupling unit are connect with the filter module.
5. signal receiving circuit according to claim 1, which is characterized in that the mixing output module includes starting of oscillation list
Member, mixing unit and output unit；
The starting of oscillation unit is connect with the mixing unit, and the mixing unit is connect with the filter module, and the mixing is single
It is first to be connect with the output unit.
6. signal receiving circuit according to claim 1, which is characterized in that the power supply switching module includes power supply output
Unit and switch control unit；
The power output unit is connect with the mixing output module, the switch control unit and the power output unit
Connection, the switch control unit are connect with the signal switching module.
7. signal receiving circuit according to claim 1, which is characterized in that the filter module includes that mirror image inhibits band logical
Filter.
8. signal receiving circuit according to claim 1, which is characterized in that the first radio frequency amplifying unit includes first
Antenna, the first field-effect tube, first resistor, first capacitor, second resistance, the second capacitor, third capacitor, the 4th capacitor, second
Antenna, the second field-effect tube, 3rd resistor, the 5th capacitor, the 4th resistance, the 6th capacitor, the 7th capacitor, the 8th capacitor, third
Field-effect tube, the 5th resistance, the 9th capacitor, the 6th resistance, the tenth capacitor, the 11st capacitor and the 12nd capacitor；
The first antenna is connect with the first end of first field-effect tube, the first end of first field-effect tube with it is described
The first end of first resistor connects, the third end ground connection of first field-effect tube, the second end of the first resistor with it is described
The first end of first capacitor connects, the second end ground connection of the first capacitor, the second end of first field-effect tube with it is described
The first end of second resistance is electrically connected, and the second end of the second resistance is connect with the first end of second capacitor, and described the
The second ends of two capacitors is grounded, and the first end of the third capacitor is connect with the second end of first field-effect tube, and described the
The first end of four capacitors is connect with the first end of the third capacitor, the second end of the third capacitor and the 4th capacitor
Second end connection, the second end of the 4th capacitor connect with the first end of the third field-effect tube, second antenna and
The first end of second field-effect tube connects, the third end ground connection of second field-effect tube, and the first of the 3rd resistor
End is connect with the first end of second field-effect tube, and the first end of the second end of the 3rd resistor and the 5th capacitor connects
It connects, the second end ground connection of the 5th capacitor, the first end of the second end of second field-effect tube and the 4th resistance connects
It connects, the second end of the 4th resistance is connect with the first end of the 6th capacitor, the second end ground connection of the 6th capacitor, institute
The first end for stating the 7th capacitor is connect with the first end of the 4th resistance, the second end of the 7th capacitor and the 8th electricity
The second end of appearance connects, and the first end of the 8th capacitor is connect with the first end of the 7th capacitor, the 8th capacitor
Second end is connect with the first end of the third field-effect tube, the third end ground connection of the third field-effect tube, the 5th electricity
The first end of resistance is connect with the first end of the third field-effect tube, and the second end of the 5th resistance and the signal switch mould
Block connection, the first end of the 9th capacitor are connect with the first end of the 5th resistance, the second termination of the 9th capacitor
The first end on ground, the 6th resistance is connect with the second end of the third field-effect tube, the second end of the 6th resistance with
The first end of tenth capacitor connects, the second end ground connection of the tenth capacitor, the first end of the 11st capacitor and institute
The second end connection of third field-effect tube is stated, the second end of the 11st capacitor and the second end of the 12nd capacitor connect
It connects, the first end of the 12nd capacitor is connect with the first end of the 11st capacitor, the second end of the 12nd capacitor
It is connect with the filter module.
9. signal receiving circuit according to claim 1, it is characterised in that the second radio frequency amplifying unit includes third
Antenna, the 4th field-effect tube, the 7th resistance, the 13rd capacitor, the 8th resistance, the 14th capacitor, the 15th capacitor, the 16th electricity
Appearance, the 4th antenna, the 5th field-effect tube, the 9th resistance, the 17th capacitor, the tenth resistance, the 18th capacitor, the 19th capacitor,
20th capacitor, the 6th field-effect tube, eleventh resistor, the 21st capacitor, twelfth resistor, the 22nd capacitor, second
13 capacitors, the 24th capacitor；
The third antenna is connect with the first end of the 4th field-effect tube, the first end of the 4th field-effect tube with it is described
The first end of 7th resistance connects, the third end ground connection of the 4th field-effect tube, the second end of the 7th resistance with it is described
The first end of 13rd capacitor connects, the second end ground connection of the 13rd capacitor, the second end of the 4th field-effect tube with
The first end of 8th resistance is electrically connected, and the second end of the 8th resistance is connect with the first end of the 14th capacitor,
The second end of 14th capacitor is grounded, and the first end of the 15th capacitor and the second end of the 4th field-effect tube connect
It connects, the first end of the 16th capacitor is connect with the first end of the 15th capacitor, the second end of the 15th capacitor
It is connect with the second end of the 16th capacitor, the second end of the 16th capacitor and the first end of the 6th field-effect tube
Connection, the 4th antenna are connect with the first end of the 5th field-effect tube, the third end ground connection of the 5th field-effect tube,
The first end of 9th resistance is connect with the first end of the 5th field-effect tube, the second end of the 9th resistance with it is described
The first end of 17th capacitor connects, the second end ground connection of the 17th capacitor, the second end of the 5th field-effect tube with
The first end of tenth resistance connects, and the second end of the tenth resistance is connect with the first end of the 18th capacitor, institute
The second end ground connection of the 18th capacitor is stated, the first end of the 19th capacitor is connect with the first end of the tenth resistance, institute
The second end for stating the 19th capacitor is connect with the second end of the 20th capacitor, the first end of the 20th capacitor with it is described
The first end of 19th capacitor connects, and the second end of the 20th capacitor is connect with the first end of the 6th field-effect tube,
The third end of 6th field-effect tube is grounded, the first end of the first end of the eleventh resistor and the 6th field-effect tube
Connection, the second end of the eleventh resistor connect with the signal switching module, the first end of the 21st capacitor and
The first end of the eleventh resistor connects, the second end ground connection of the 21st capacitor, and the first of the twelfth resistor
End is connect with the second end of the 6th field-effect tube, and the of the second end of the twelfth resistor and the 22nd capacitor
One end connection, the second end ground connection of the 22nd capacitor, the first end of the 23rd capacitor and described 6th effect
Should pipe second end connection, the second end of the 23rd capacitor is connect with the second end of the 24th capacitor, described
The first end of 24th capacitor is connect with the first end of the 23rd capacitor, the second end of the 24th capacitor with
The filter module connection.
10. a kind of satellite signal receiving equipment, which is characterized in that the satellite signal receiving equipment include receiver and with it is described
The signal receiving circuit as claimed in any one of claims 1 to 9 of receiver connection.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111769840A (en) * | 2020-06-04 | 2020-10-13 | 广州慧智微电子有限公司 | Radio frequency signal processing circuit with multiple working modes and radio frequency front end unit |
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| CN101303403A (en) * | 2007-06-11 | 2008-11-12 | 杭州中科微电子有限公司 | Multi-mode satellite navigation receiving radio frequency front end chip |
| CN105549038A (en) * | 2015-07-10 | 2016-05-04 | 北京中电华大电子设计有限责任公司 | Radio frequency front-end circuit of L1-L2 dual-band satellite navigation receiver |
| CN106130593A (en) * | 2016-06-29 | 2016-11-16 | 华讯方舟科技（湖北）有限公司 | A kind of double reception microwave frequency changer circuit and microwave converter |
| CN107277471A (en) * | 2017-06-12 | 2017-10-20 | 华讯方舟科技有限公司 | One kind eight exports microwave frequency changer circuit and eight output microwave converters |
| CN107294547A (en) * | 2017-08-07 | 2017-10-24 | 华讯方舟科技有限公司 | A kind of microwave frequency changer circuit and microwave converter |
| CN210075213U (en) * | 2019-08-21 | 2020-02-14 | 华讯方舟科技（湖北）有限公司 | Signal receiving circuit and satellite signal receiving equipment |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111769840A (en) * | 2020-06-04 | 2020-10-13 | 广州慧智微电子有限公司 | Radio frequency signal processing circuit with multiple working modes and radio frequency front end unit |
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