Utility model content
The utility model provides a kind of microwave frequency changer circuit and microwave converter, it is intended to solve in traditional technical solution
There is circuit structure complexity and at high cost in microwave frequency changer circuit.
The utility model is realized in this way a kind of microwave frequency changer circuit, comprising:
It is connect with antenna, for amplifying received first radiofrequency signal of the antenna and the second radiofrequency signal with life
At the RF Amplifier Module of the first radio frequency amplified signal and the second radio frequency amplified signal;
For generating the starting of oscillation module of local oscillation signal;
It is connect with the RF Amplifier Module and the starting of oscillation module, for being penetrated according to the local oscillation signal and described first
Frequency amplified signal or the second radio frequency amplified signal carry out multiphase digital phase modulation to generate local oscillation frequency signal, and according to institute
State local oscillation frequency signal and the first radio frequency amplified signal or the second radio frequency amplified signal be mixed it is more to generate
The mixing switching module of kind intermediate-freuqncy signal;And
It is connect with the mixing switching module, for exporting the intermediate frequency output module of the intermediate-freuqncy signal.
In a kind of wherein embodiment, the mixing switching module is also used to generate pulse control according to original burst signal
Signal;The mixing switching module be also used to be switched between a variety of intermediate-freuqncy signals according to the pulse control signal with
Export a kind of corresponding intermediate-freuqncy signal.
In a kind of wherein embodiment, the RF Amplifier Module includes: to connect with the antenna, for the antenna
Received first radiofrequency signal is amplified to generate the first radio frequency amplifying unit of the first radio frequency amplified signal;With with the day
Line connection, for being amplified to received second radiofrequency signal of the antenna to generate the second of the second radio frequency amplified signal and penetrate
Frequency amplifying unit.
In a kind of wherein embodiment, the first radio frequency amplifying unit includes: the first field-effect tube, first resistor,
One capacitor, the second capacitor and third capacitor;The grid of first field-effect tube and the first end of the first resistor connect altogether
Constitute the input terminal of the first radio frequency amplifying unit, the drain electrode of first field-effect tube, the first capacitor first end
It is connected to the first end of second capacitor altogether, the source electrode of the second end of the first capacitor and first field-effect tube is connected to altogether
Ground, output end of the second end of second capacitor as the first radio frequency amplifying unit, the second end of the first resistor
It is connected with the first end of the third capacitor, the second end of the third capacitor is connected to ground.
In a kind of wherein embodiment, the second radio frequency amplifying unit includes: the second field-effect tube, second resistance,
Four capacitors, the 5th capacitor and the 6th capacitor;The grid of second field-effect tube and the first end of the second resistance connect altogether
Constitute the input terminal of the second radio frequency amplifying unit, the drain electrode of second field-effect tube and the first end of the 4th capacitor
It is connected to the first end of the 5th capacitor altogether, the second end of the 5th capacitor is the output of the second radio frequency amplifying unit
End, the second end of the second resistance connects with the first end of the 6th capacitor, the second end of the 6th capacitor, described the
The first end of the source electrode of two field-effect tube and the 4th capacitor is all connected to ground.
In a kind of wherein embodiment, the starting of oscillation module includes: crystal oscillator, the 7th capacitor and the 8th capacitor;
The first end of the crystal oscillator and the first end of the 7th capacitor connect the input terminal as the starting of oscillation module altogether, described
The second end of crystal oscillator and the first end of the 8th capacitor connect the output end as the starting of oscillation module altogether, and the described 7th
The second end of capacitor and the second end of the 8th capacitor are connected to ground altogether.
In a kind of wherein embodiment, the intermediate frequency output module includes: regulated power supply chip, the first inductance, the second electricity
Sense, 3rd resistor, the 4th resistance, the 5th resistance, the 6th resistance, the 9th capacitor, the tenth capacitor, the 11st capacitor, the 12nd electricity
Appearance and the 13rd capacitor;The first end of the 3rd resistor is the first input end of the intermediate frequency output module, the third
The second end of resistance is connect with the first end of first inductance, and the of the second end of first inductance and the 9th capacitor
One end connection, the second end of the 9th capacitor and the first end of second inductance connect altogether constitutes the intermediate frequency output module
Input/output terminal, the first end of the 4th resistance are the first output end of the intermediate frequency output module, the 11st capacitor
First end, the first end of the 12nd capacitor and the output end of the regulated power supply chip connect that constitute the intermediate frequency defeated altogether
The second output terminal of module out, the second end of the 4th resistance, the first end of the 5th resistance, the 6th resistance
The first end of one end and the tenth capacitor connects altogether, and the second of the second end of the 11st capacitor, the 12nd capacitor
The second end of end and the 5th resistance is all connected to ground, and the second of the second end of the 6th resistance, the tenth capacitor
The input terminal at end, the first end of the 13rd capacitor and the regulated power supply chip is connected to the second of second inductance altogether
End, the ground terminal of the regulated power supply chip are connected to ground, and the second end of the 13rd capacitor is connected to ground.
In a kind of wherein embodiment, the mixing switching module include: four operation signal processing chips, the 7th resistance with
And the 8th resistance;First RF signal input end of the four operations signal processing chip is the first of the mixing switching module
RF signal input end, the second RF signal input end of the four operations signal processing chip are the mixing switching module
Second RF signal input end, the intermediate-freuqncy signal output end of the four operations signal processing chip are the mixing switching module
Intermediate-freuqncy signal output end, the current controling end of the four operations signal processing chip are connect with the first end of the 7th resistance,
The local frequency selection end of the four operations signal processing chip is connected with the first end of the 8th resistance, the 8th resistance
Second end and the 7th resistance second end be connected to altogether ground, the four operations signal processing chip crystal oscillator input
End is the local oscillation signal input terminal of the mixing switching module, the crystal oscillator output end of the four operations signal processing chip
For the local oscillation signal output end of the mixing switching module, the intermediate-freuqncy signal switching control end of the four operations signal processing chip
For the intermediate-freuqncy signal switching control end of the mixing switching module, the power end of the four operations signal processing chip is described mixed
The power input of frequency switching module.
In addition, a kind of microwave converter is also provided, including above-mentioned microwave frequency changer circuit.
Above-mentioned microwave frequency changer circuit passes through setting RF Amplifier Module the first radiofrequency signal received to antenna and second
Radiofrequency signal is amplified to generate the first radio frequency amplified signal and the second radio frequency amplified signal, and starting of oscillation module generates local oscillator letter
Number, make to be mixed switching module according to local oscillation signal and the first radio frequency amplified signal or the second radio frequency amplified signal progress multiphase number
Word phase modulation is amplified with generating local oscillation frequency signal according to local oscillation frequency signal and the first radio frequency amplified signal or the second radio frequency
Signal is mixed to generate a variety of intermediate-freuqncy signals and be exported by intermediate frequency output module;The microwave frequency changer circuit is put by radio frequency
Big module single-stage amplification is carried out to radiofrequency signal with export can be mixed the matched radio frequency amplified signal of switching module so that this
Circuit structure is simple, has saved great amount of cost under the premise of guaranteeing high performance.
Specific embodiment
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation
Example, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein is only used to explain
The utility model is not used to limit the utility model.
Fig. 1 shows the module diagram of the microwave frequency changer circuit of the utility model preferred embodiment offer, for the ease of
Illustrate, only the parts related to this embodiment are shown, and details are as follows:
With reference to Fig. 1, a kind of microwave frequency changer circuit, comprising: RF Amplifier Module 10, starting of oscillation module 30, mixing switching module
20 and intermediate frequency output module 40.
Wherein, RF Amplifier Module 10 is connect with antenna, is used for the first radiofrequency signal received to antenna and the second radio frequency
Signal is amplified to generate the first radio frequency amplified signal and the second radio frequency amplified signal;Starting of oscillation module 30 is for generating local oscillator letter
Number;Mixing switching module 20 is connect with RF Amplifier Module 10 and starting of oscillation module 30, for according to local oscillation signal and the first radio frequency
Amplified signal or the second radio frequency amplified signal carry out multiphase digital phase modulation to generate local oscillation frequency signal, and according to local frequency
Signal and the first radio frequency amplified signal or the second radio frequency amplified signal are mixed to generate a variety of intermediate-freuqncy signals;Intermediate frequency output
Module 40 is connect with mixing switching module 20, for exporting intermediate-freuqncy signal.First radiofrequency signal and the second radiofrequency signal respectively refer to
Be horizontal radiofrequency signal and vertical radiofrequency signal.The frequency of horizontal radiofrequency signal and vertical radiofrequency signal is specially 10.7GHz-
12.75GHz, the first radio frequency amplified signal and the second radio frequency amplified signal refer respectively to horizontal radio frequency amplified signal and vertically penetrate
Frequency amplified signal.Local oscillation frequency signal is specifically as follows 9.75GHz, 10.6GHz, 10.75GHz, 11.3GHz.For double local oscillators
Circuit, intermediate-freuqncy signal include high local oscillator intermediate-freuqncy signal and low local oscillator intermediate-freuqncy signal, and Gao Benzhen intermediate-freuqncy signal is specifically as follows
0.95GHz,1.95GHz;Low local oscillator intermediate-freuqncy signal is specifically as follows 1.1GHz, 2.15GHz.For single local oscillation circuit, intermediate frequency letter
It number include high local oscillator intermediate-freuqncy signal, Gao Benzhen intermediate-freuqncy signal is specifically as follows 0.95GHz, 1.45GHz.Being mixed switching module 20 can
With select any one radio frequency amplified signal in horizontal radio frequency amplified signal and vertical radio frequency amplified signal and local oscillation signal into
Row multiphase digital phase modulation specifically carries out selection level by the 13V/18V voltage of satellite receiver and penetrates to generate local oscillation frequency signal
Frequency amplified signal or vertical radio frequency amplified signal.
In the present embodiment, pass through the first radiofrequency signal received to antenna of RF Amplifier Module 10 and the second radiofrequency signal
It amplifies to generate the first radio frequency amplified signal and the second radio frequency amplified signal, starting of oscillation module 30 generates local oscillation signal, makes to mix
Frequency switching module 20 carries out multiphase digital tune according to local oscillation signal and the first radio frequency amplified signal or the second radio frequency amplified signal
Mutually to generate local oscillation frequency signal, and according to local oscillation frequency signal and the first radio frequency amplified signal or the second radio frequency amplified signal
It is mixed to generate a variety of intermediate-freuqncy signals and be exported by intermediate frequency output module 40;The microwave frequency changer circuit is amplified by radio frequency
Module 10 to radiofrequency signal carry out single-stage amplification with export can be mixed the matched radio frequency amplified signal of switching module 20 so that
The circuit structure is simple, has saved great amount of cost under the premise of guaranteeing high performance.
Fig. 2 is referred in one of the embodiments, and mixing switching module 20 is also used to for raw according to original burst signal
It is switched between a variety of intermediate-freuqncy signals at pulse control signal, and according to pulse control signal to export a kind of corresponding intermediate frequency
Signal.Original burst signal is inputted from the input/output terminal O/P of intermediate frequency signal output module 40, and exports mould by intermediate-freuqncy signal
Block 40 generates pulse control signal to be input to mixing switching module 20.The mixing switching module 20 of the present embodiment can according to
The original burst signal of family input is switched between various intermediate-freuqncy signals to export a kind of corresponding intermediate-freuqncy signal, so that satellite
Receiver realizes that Whole frequency band receives program within the scope of radio-frequency range.
Fig. 2 is referred in one of the embodiments, and RF Amplifier Module 10 includes the first radio frequency amplifying unit 101 and the
Two radio frequency amplifying units 102;Wherein, the first radio frequency amplifying unit 101 is connect with antenna, is used for the first radio frequency received to antenna
Signal is amplified to generate the first radio frequency amplified signal;Second radio frequency amplifying unit 102 is connect with antenna, for connecing to antenna
The second radiofrequency signal received is amplified to generate the second radio frequency amplified signal.As long as the present embodiment is amplified using the first radio frequency
Unit 101 and the second radio frequency amplifying unit 102 carry out single-stage amplification to the received radiofrequency signal of antenna, adopt with traditional scheme needs
It is compared with three-level radio frequency amplifying circuit, the radio frequency amplifying circuit structure is simple, not only reduces hardware cost, also reduces PCB
Plate suqare, while also reducing the volume of other corresponding peripheral assembling fittings of pcb board.
Fig. 2 is referred in one of the embodiments, and the first radio frequency amplifying unit 101 includes: the first field-effect tube Q1, the
One resistance R1, first capacitor C1, the second capacitor C2 and third capacitor C3;The grid and first resistor R1 of first field-effect tube Q1
First end connect the input terminal for constituting the first radio frequency amplifying unit 101 altogether, the drain electrode of the first field-effect tube Q1, first capacitor C1
First end is connected to the first end of the second capacitor C2 altogether, and the source electrode of the second end of first capacitor C1 and the first field-effect tube Q1 are connected to altogether
Ground, output end of the second end of the second capacitor C2 as the first radio frequency amplifying unit 101, the second end and third of first resistor R1
The first end of capacitor C3 connects, and the second end of third capacitor C3 is connected to ground.In the particular embodiment, the first field-effect tube Q1
For N-channel field-effect tube.
Fig. 2 is referred in one of the embodiments, and the second radio frequency amplifying unit 102 includes: the second field-effect tube Q2, the
Two resistance R2, the 4th capacitor C4, the 5th capacitor C5 and the 6th capacitor C6;The grid and second resistance R2 of second field-effect tube Q2
First end meet the input terminal for constituting the second radio frequency amplifying unit 102, the drain electrode of the second field-effect tube Q2 and the 4th capacitor C4 altogether
First end be connected to the first end of the 5th capacitor C5 altogether, the second end of the 5th capacitor C5 is the defeated of the second radio frequency amplifying unit 102
Outlet, the second end of second resistance R2 are connected with the first end of the 6th capacitor C6, the second end of the 6th capacitor C6, the second field-effect
The first end of the source electrode of pipe Q2 and the 4th capacitor C4 are all connected to ground.In the particular embodiment, the second field-effect tube Q2 is N
Channel field-effect pipe.
In one of the embodiments, refer to Fig. 2, starting of oscillation module 30 include: crystal oscillator BC, the 7th capacitor C7 and
8th capacitor C8;The first end of crystal oscillator BC and the first end of the 7th capacitor C7 connect the input as starting of oscillation module 30 altogether
The first end of end, the second end of crystal oscillator BC and the 8th capacitor C8 connect the output end as starting of oscillation module 30, the 7th electricity altogether
The second end of the second end and the 8th capacitor C8 of holding C7 is connected to ground altogether.
Fig. 2 is referred in one of the embodiments, and intermediate frequency output module 40 includes: regulated power supply chip U2, the first inductance
L1, the second inductance L2,3rd resistor R3, the 4th resistance R4, the 5th resistance R5, the 6th resistance R6, the 9th capacitor C9, the tenth capacitor
C10, the 11st capacitor C11, the 12nd capacitor C12 and the 13rd capacitor C13;The first end of 3rd resistor R3 is intermediate frequency output
The first input end of module 40, the second end of 3rd resistor R3 are connect with the first end of the first inductance L1, and the of the first inductance L1
Two ends are connect with the first end of the 9th capacitor C9, and the first end of the second end of the 9th capacitor C9 and the second inductance L2 connect in composition altogether
The first end of the input/output terminal O/P, the 4th resistance R4 of frequency output module 40 are the first output end of intermediate frequency output module 40, the
The output end of the first end of 11 capacitor C11, the first end of the 12nd capacitor C12 and regulated power supply chip U2 connects in composition altogether
The second output terminal of frequency output module 40, the second end of the 4th resistance R4, the first end of the 5th resistance R5, the 6th resistance R6
The first end of one end and the tenth capacitor C10 connect altogether, the second end of the 11st capacitor C11, the second end of the 12nd capacitor C12 with
And the 5th resistance R5 second end be all connected to ground, second end, the second end of the tenth capacitor C10, the 13rd of the 6th resistance R6
The first end of capacitor C13 and the input terminal of regulated power supply chip U2 are connected to the second end of the second inductance L2, regulated power supply core altogether
The ground terminal of piece U2 is connected to ground, and the second end of the 13rd capacitor C13 is connected to ground.
Fig. 2 is referred in one of the embodiments, and mixing switching module 20 includes: four operation signal processing chip U1, the
Seven resistance R7 and the 8th resistance R8;The first RF signal input end FR_T of four operation signal processing chip U1 is mixing switching
First RF signal input end of module 20, the second RF signal input end FR_B of four operation signal processing chip U1 are mixing
Second RF signal input end of switching module 20, the intermediate-freuqncy signal output end IF of four operation signal processing chip U1 are that mixing is cut
Change the mold the intermediate-freuqncy signal output end of block 20, the of the current controling end RCAL and the 7th resistance R7 of four operation signal processing chip U1
One end connection, the first end connection of the local frequency selection end CFG and the 8th resistance R8 of four operation signal processing chip U1, the 8th
The second end of resistance R8 and the second end of the 7th resistance R7 are connected to ground, the crystal oscillator BC of four operation signal processing chip U1 altogether
Input terminal XTAL2 is the local oscillation signal input terminal for being mixed switching module 20, the crystal oscillator of four operation signal processing chip U1
BC output end is the local oscillation signal output end XTAL1 for being mixed switching module 20, the intermediate-freuqncy signal of four operation signal processing chip U1
Switching control end POL_22K is the intermediate-freuqncy signal switching control end for being mixed switching module 20, four operation signal processing chip U1's
Power end VDD is the power input for being mixed switching module 20.The present embodiment by adjust the 8th resistance R8 resistance value, it can be achieved that
Switch high local oscillator and low local oscillator.Four operation signal processing chip U1, which can be realized, to be believed according to the demand of satellite receiver in various intermediate frequencies
Automatically switch the output of any one intermediate-freuqncy signal between number, is not required to switch over using switching circuit, so that the microwave radio circuit
Structure is simple, not only further reduced hardware cost, has also further reduced pcb board area, while also further reducing
The volume of other corresponding peripheral assembling fittings of pcb board, in addition, also enabling satellite receiver real within the scope of radio-frequency range
Existing Whole frequency band receives program.
In addition, a kind of microwave converter is also provided, including above-mentioned microwave frequency changer circuit.
Its working principle is illustrated by taking microwave frequency changer circuit shown in Fig. 2 as an example below, details are as follows:
First field-effect tube Q1 the first radiofrequency signal received to antenna is amplified to generate the first radio frequency amplified signal,
And four operation signal processing chip U1 are input to by the first RF signal input end FR_T of four operation signal processing chip U1,
Second field-effect tube Q2 the second radiofrequency signal received to antenna is amplified to generate the second radio frequency amplified signal, and passes through four
The second RF signal input end FR_B of operation signal processing chip U1 is input to four operation signal processing chip U1;Crystal oscillation
Frequency of the device according to the radio frequency amplified signal of four operation signal processing chip U1 and the crystalline substance by four operation signal processing chip U1
Local oscillation signal of the oscillation body device input terminal XTAL2 to four operation signal processing chip U1 input certain frequency;Make four operation signals
Handle chip U1 according to the 13V/18V voltage of satellite receiver select the first radio frequency amplified signal or the second radio frequency amplified signal with
Local oscillation signal carry out multiphase digital phase modulation to generate local oscillation frequency signal, specifically: when satellite receiver voltage be 13V when, choosing
It selects the first radio frequency amplified signal and local oscillation signal carries out multiphase digital phase modulation to generate local oscillation frequency signal, when satellite reception electromechanics
When pressure is 18V, the second radio frequency amplified signal and local oscillation signal is selected to carry out multiphase digital phase modulation to generate local oscillation frequency signal;Four
Operation signal processing chip U1 also according to local oscillation frequency signal and the first radio frequency amplified signal or the second radio frequency amplified signal into
Row mixing receives satellite receiver by the input/output terminal O/P of intermediate frequency output module 40 to generate a variety of intermediate-freuqncy signals
Original burst signal, original burst signal generates pulse after the 6th resistance R6, the tenth capacitor C10 and the 4th resistance R4
Signal is controlled, and pulse control signal is passed through to the intermediate-freuqncy signal switching control end POL_22K of four operation signal processing chip U1
Four operation signal processing chip U1 are input to, four operation signal processing chip U1 are according to pulse control signal in a variety of intermediate-freuqncy signals
Between switch over to export a kind of corresponding intermediate-freuqncy signal by the intermediate-freuqncy signal output end IF of four operation signal processing chip U1.
The utility model has the beneficial effects that
(1) the microwave frequency changer circuit single-stage amplification carried out to radiofrequency signal by RF Amplifier Module with export can with it is mixed
The matched radio frequency amplified signal of frequency switching module, compared with traditional scheme needs using three-level radio frequency amplifying circuit, which is put
Big circuit structure is simple, not only reduces hardware cost, also reduces pcb board area, while it is corresponding to also reduce pcb board
The volume of other peripheral assembling fittings, has saved great amount of cost under the premise of guaranteeing high performance.
(2) automatically switched between various intermediate-freuqncy signals by being mixed switching module and can realize according to the demand of satellite receiver
The output of any one intermediate-freuqncy signal, is not required to be switched over using switching circuit, not only enables satellite receiver in radio-frequency range
Realize that Whole frequency band receives program, is further simplified the microwave radio circuit structure, not only further reduced in range
Hardware cost has also further reduced pcb board area, while also further reducing other corresponding periphery assemblings of pcb board
The volume of accessory.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Made any modifications, equivalent replacements, and improvements etc., should be included in the utility model within the spirit and principle of utility model
Protection scope within.