CN204131467U - A kind of wideband voltage controlled oscillator - Google Patents
A kind of wideband voltage controlled oscillator Download PDFInfo
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- CN204131467U CN204131467U CN201420513193.6U CN201420513193U CN204131467U CN 204131467 U CN204131467 U CN 204131467U CN 201420513193 U CN201420513193 U CN 201420513193U CN 204131467 U CN204131467 U CN 204131467U
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Abstract
The utility model discloses a kind of wideband voltage controlled oscillator, comprise voltage control signal and power input interface P1, resonant tank, generator triode Q, output amplifier and oscillator signal output interface P2, voltage control signal and power input interface P1 are the interface with three pins; Resonant tank by variable capacitance diode D1 and variable capacitance diode D2, inductance L 1, microstrip line TL1, and electric capacity C2, electric capacity C3 and electric capacity C4 form; Oscillator signal output interface P2 is the interface with two pins, output amplifier is made up of amplifier chip ERA-33SM and electric capacity C7 and electric capacity C9, also comprise resistance R1, electric capacity C1 and resistance R2, resistance R3, resistance R4, resistance R5, resistance R6 and resistance R7, and resistance R8 and electric capacity C8.The utility model circuit structure is simple, and it is convenient to realize, and cost is low, can meet the demand of multiple applied environment, applied range.
Description
Technical field
The utility model belongs to technology for radio frequency field, is specifically related to a kind of wideband voltage controlled oscillator.
Background technology
Existing wide-band oscillator is mostly special chip or special small package module, such as: the ADF4350 chip of Analog company, 3 voltage controlled oscillators (VCO) are integrated with inside this chip, be used for covering 2200MHz ~ 4400MHz frequency range, it have employed output frequency divider simultaneously and is used for covering low-frequency range.Special small package module is as ROS-2150VW voltage-control oscillator module, and this type of specific module is general module, and highly versatile simultaneously price is also general higher.And for specific applied environment, sometimes need the voltage controlled oscillator customizing specific indexes, and need to reduce costs, now these special chips and general small package module are inappropriate.
Utility model content
Technical problem to be solved in the utility model is, for above-mentioned deficiency of the prior art, to provide a kind of wideband voltage controlled oscillator, and its circuit structure is simple, and it is convenient to realize, and cost is low, can meet the demand of multiple applied environment, applied range.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is: a kind of wideband voltage controlled oscillator, it is characterized in that: comprise voltage control signal and power input interface P1, resonant tank, generator triode Q, output amplifier and oscillator signal output interface P2
Described voltage control signal and power input interface P1 are the interface with three pins, 1st pin of described voltage control signal and power input interface P1 connects with the voltage control signal CON of outside 0.5V ~ 22V, 2nd pin of described voltage control signal and power input interface P1 connects with the positive pole of+5V power supply, the 3rd pin ground connection of described voltage control signal and power input interface P1;
Described resonant tank by variable capacitance diode D1 and variable capacitance diode D2, inductance L 1, microstrip line TL1, and electric capacity C2, electric capacity C3 and electric capacity C4 form, the plus earth of described variable capacitance diode D1 and being connected with the 1st pin of voltage control signal and power input interface P1 by electric capacity C1, the negative electrode of described variable capacitance diode D1 and the negative electrode of variable capacitance diode D2 are all connected with the 1st pin of voltage control signal and power input interface P1 by resistance R1, the anode of described variable capacitance diode D2 is connected by inductance L 1 one end with microstrip line TL1, the other end of described microstrip line TL1 connects with one end of electric capacity C2, and by resistance R2 ground connection, the other end of described electric capacity C2 is connected with one end of electric capacity C4 by electric capacity C3, the other end ground connection of described electric capacity C4, described resistance R1, electric capacity C1 and the resistance R2 voltage control signal CON constituted for controlling outside 0.5V ~ 22V is loaded into the circuit network on variable capacitance diode D1 and variable capacitance diode D2,
The base stage of described generator triode Q is connected with the 2nd pin of voltage control signal and power input interface P1 by resistance R4, and connects with the link of electric capacity C2 and electric capacity C3, and by resistance R3 ground connection; The collector electrode of described generator triode Q is connected with the 2nd pin of voltage control signal and power input interface P1 by resistance R7, and the emitter of described generator triode Q connects with the link of electric capacity C3 and electric capacity C4, and by resistance R5 in parallel and resistance R6 ground connection; Described resistance R3, resistance R4, resistance R5, resistance R6 and resistance R7 constitute the working point configuration resistor group of generator triode Q;
Described oscillator signal output interface P2 is the interface with two pins, described output amplifier is made up of amplifier chip ERA-33SM and electric capacity C7 and electric capacity C9, 1st pin of described amplifier chip ERA-33SM is connected with the emitter of generator triode Q by electric capacity C7, 2nd pin of described amplifier chip ERA-33SM and the equal ground connection of the 4th pin, 3rd pin of described amplifier chip ERA-33SM is connected with a pin of oscillator signal output interface P2 by electric capacity C9, and connected with the 2nd pin of voltage control signal and power input interface P1 by resistance R8, another pin ground connection of described oscillator signal output interface P2, the link of the 2nd pin of described resistance R8 and voltage control signal and power input interface P1 is by electric capacity C8 ground connection, described resistance R8 and electric capacity C8 constitutes the biasing circuit of amplifier chip ERA-33SM.
Above-mentioned a kind of wideband voltage controlled oscillator, it is characterized in that: comprise power supply decoupling circuit, described power supply decoupling circuit is made up of electric capacity C5 and electric capacity C6, one end of described electric capacity C5 connects with the link of resistance R7 with the collector electrode of generator triode Q, the link of the 2nd pin of one end of described electric capacity C6 and resistance R7 and voltage control signal and power input interface P1 connects, the other end of described electric capacity C5 and the equal ground connection of the other end of electric capacity C6.
Above-mentioned a kind of wideband voltage controlled oscillator, is characterized in that: the model of described variable capacitance diode D1 and variable capacitance diode D2 is SMV1265.
Above-mentioned a kind of wideband voltage controlled oscillator, is characterized in that: the model of described generator triode Q is BFP520.
Above-mentioned a kind of wideband voltage controlled oscillator, is characterized in that: the length of described microstrip line TL1 is 320mil, and the width of described microstrip line TL1 is 50mil.
The utility model compared with prior art has the following advantages:
1, the utility model circuit structure is simple, and it is convenient to realize.
2, the utility model have employed cheap discrete surface-mounted device formation wideband voltage controlled oscillator, and cost is low, can be widely applied in the product for civilian use of cost sensitivity and go, and can be integrated in specific radio system, accelerates the development rate of product.
3, its frequency range of the present utility model can be adjusted by each components and parts in adjustment resonant tank, the variable capacitance diode that model is SMV1265 is have employed in resonant tank, under the control voltage of outside 0.5V ~ 22V, surge frequency range is 990MHz-2160MHz, cover an octave, can be widely applied in the products such as Digital Television tunable receiver and go.
In sum, the utility model circuit structure is simple, and it is convenient to realize, and cost is low, can meet the demand of multiple applied environment, applied range.
Below by drawings and Examples, the technical solution of the utility model is described in further detail.
Accompanying drawing explanation
Fig. 1 is circuit theory diagrams of the present utility model.
Embodiment
As shown in Figure 1, the utility model comprises voltage control signal and power input interface P1, resonant tank, generator triode Q, output amplifier and oscillator signal output interface P2,
Described voltage control signal and power input interface P1 are the interface with three pins, 1st pin of described voltage control signal and power input interface P1 connects with the voltage control signal CON of outside 0.5V ~ 22V, 2nd pin of described voltage control signal and power input interface P1 connects with the positive pole of+5V power supply, the 3rd pin ground connection of described voltage control signal and power input interface P1;
Described resonant tank by variable capacitance diode D1 and variable capacitance diode D2, inductance L 1, microstrip line TL1, and electric capacity C2, electric capacity C3 and electric capacity C4 form, the plus earth of described variable capacitance diode D1 and being connected with the 1st pin of voltage control signal and power input interface P1 by electric capacity C1, the negative electrode of described variable capacitance diode D1 and the negative electrode of variable capacitance diode D2 are all connected with the 1st pin of voltage control signal and power input interface P1 by resistance R1, the anode of described variable capacitance diode D2 is connected by inductance L 1 one end with microstrip line TL1, the other end of described microstrip line TL1 connects with one end of electric capacity C2, and by resistance R2 ground connection, the other end of described electric capacity C2 is connected with one end of electric capacity C4 by electric capacity C3, the other end ground connection of described electric capacity C4, described resistance R1, electric capacity C1 and the resistance R2 voltage control signal CON constituted for controlling outside 0.5V ~ 22V is loaded into the circuit network on variable capacitance diode D1 and variable capacitance diode D2,
The base stage of described generator triode Q is connected with the 2nd pin of voltage control signal and power input interface P1 by resistance R4, and connects with the link of electric capacity C2 and electric capacity C3, and by resistance R3 ground connection; The collector electrode of described generator triode Q is connected with the 2nd pin of voltage control signal and power input interface P1 by resistance R7, and the emitter of described generator triode Q connects with the link of electric capacity C3 and electric capacity C4, and by resistance R5 in parallel and resistance R6 ground connection; Described resistance R3, resistance R4, resistance R5, resistance R6 and resistance R7 constitute the working point configuration resistor group of generator triode Q, make the collector current of generator triode Q be approximately 20mA;
Described oscillator signal output interface P2 is the interface with two pins, described output amplifier is made up of amplifier chip ERA-33SM and electric capacity C7 and electric capacity C9, 1st pin of described amplifier chip ERA-33SM is connected with the emitter of generator triode Q by electric capacity C7, 2nd pin of described amplifier chip ERA-33SM and the equal ground connection of the 4th pin, 3rd pin of described amplifier chip ERA-33SM is connected with a pin of oscillator signal output interface P2 by electric capacity C9, and connected with the 2nd pin of voltage control signal and power input interface P1 by resistance R8, another pin ground connection of described oscillator signal output interface P2, the link of the 2nd pin of described resistance R8 and voltage control signal and power input interface P1 is by electric capacity C8 ground connection, described resistance R8 and electric capacity C8 constitutes the biasing circuit of amplifier chip ERA-33SM.The operating current of amplifier chip ERA-33SM is about 40mA, and it can provide the gain of about 18dB in working range.
As shown in Figure 1, in the present embodiment, the utility model also comprises power supply decoupling circuit, described power supply decoupling circuit is made up of electric capacity C5 and electric capacity C6, one end of described electric capacity C5 connects with the link of resistance R7 with the collector electrode of generator triode Q, the link of the 2nd pin of one end of described electric capacity C6 and resistance R7 and voltage control signal and power input interface P1 connects, the other end of described electric capacity C5 and the equal ground connection of the other end of electric capacity C6.By arranging power supply decoupling circuit, the impact of power supply parasitic parameter can be eliminated.
In the present embodiment, the model of described variable capacitance diode D1 and variable capacitance diode D2 is SMV1265.The model of described generator triode Q is BFP520, and its cut-off operating frequency is about 45GHz, and maximum collector current is 50mA, and frequency of oscillation can reach more than 10GHz, can meet the user demand of the utility model wideband voltage controlled oscillator well.The length of described microstrip line TL1 is 320mil, and the width of described microstrip line TL1 is 50mil.
Operation principle of the present utility model is: the voltage control signal CON of outside 0.5V ~ 22V accesses described resonant tank by described voltage control signal and power input interface P1, variable capacitance diode D1 in described resonant tank and variable capacitance diode D2 is under the effect of the voltage control signal CON of outside 0.5V ~ 22V, capacitance changes, when voltage control signal CON changes from 0.5V ~ 22V, the capacitance of variable capacitance diode D1 and variable capacitance diode D2 changes to 0.78pF from 17pF, thus the resonance frequency of described resonant tank changes; Triode Q works in common collector pattern, after feedback capacity (electric capacity C3 and electric capacity C4) dividing potential drop, gain is provided to described resonant tank, maintain the vibration of described resonant tank, after the signal that described generator triode Q is coupled out is amplified to about 10dBm by described output amplifier, output to outside by described oscillator signal output interface P2.
The above; it is only preferred embodiment of the present utility model; not the utility model is imposed any restrictions; every above embodiment is done according to the utility model technical spirit any simple modification, change and equivalent structure change, all still belong in the protection range of technical solutions of the utility model.
Claims (5)
1. a wideband voltage controlled oscillator, is characterized in that: comprise voltage control signal and power input interface P1, resonant tank, generator triode Q, output amplifier and oscillator signal output interface P2,
Described voltage control signal and power input interface P1 are the interface with three pins, 1st pin of described voltage control signal and power input interface P1 connects with the voltage control signal CON of outside 0.5V ~ 22V, 2nd pin of described voltage control signal and power input interface P1 connects with the positive pole of+5V power supply, the 3rd pin ground connection of described voltage control signal and power input interface P1;
Described resonant tank by variable capacitance diode D1 and variable capacitance diode D2, inductance L 1, microstrip line TL1, and electric capacity C2, electric capacity C3 and electric capacity C4 form, the plus earth of described variable capacitance diode D1 and being connected with the 1st pin of voltage control signal and power input interface P1 by electric capacity C1, the negative electrode of described variable capacitance diode D1 and the negative electrode of variable capacitance diode D2 are all connected with the 1st pin of voltage control signal and power input interface P1 by resistance R1, the anode of described variable capacitance diode D2 is connected by inductance L 1 one end with microstrip line TL1, the other end of described microstrip line TL1 connects with one end of electric capacity C2, and by resistance R2 ground connection, the other end of described electric capacity C2 is connected with one end of electric capacity C4 by electric capacity C3, the other end ground connection of described electric capacity C4, described resistance R1, electric capacity C1 and the resistance R2 voltage control signal CON constituted for controlling outside 0.5V ~ 22V is loaded into the circuit network on variable capacitance diode D1 and variable capacitance diode D2,
The base stage of described generator triode Q is connected with the 2nd pin of voltage control signal and power input interface P1 by resistance R4, and connects with the link of electric capacity C2 and electric capacity C3, and by resistance R3 ground connection; The collector electrode of described generator triode Q is connected with the 2nd pin of voltage control signal and power input interface P1 by resistance R7, and the emitter of described generator triode Q connects with the link of electric capacity C3 and electric capacity C4, and by resistance R5 in parallel and resistance R6 ground connection; Described resistance R3, resistance R4, resistance R5, resistance R6 and resistance R7 constitute the working point configuration resistor group of generator triode Q;
Described oscillator signal output interface P2 is the interface with two pins, described output amplifier is made up of amplifier chip ERA-33SM and electric capacity C7 and electric capacity C9, 1st pin of described amplifier chip ERA-33SM is connected with the emitter of generator triode Q by electric capacity C7, 2nd pin of described amplifier chip ERA-33SM and the equal ground connection of the 4th pin, 3rd pin of described amplifier chip ERA-33SM is connected with a pin of oscillator signal output interface P2 by electric capacity C9, and connected with the 2nd pin of voltage control signal and power input interface P1 by resistance R8, another pin ground connection of described oscillator signal output interface P2, the link of the 2nd pin of described resistance R8 and voltage control signal and power input interface P1 is by electric capacity C8 ground connection, described resistance R8 and electric capacity C8 constitutes the biasing circuit of amplifier chip ERA-33SM.
2. according to a kind of wideband voltage controlled oscillator according to claim 1, it is characterized in that: comprise power supply decoupling circuit, described power supply decoupling circuit is made up of electric capacity C5 and electric capacity C6, one end of described electric capacity C5 connects with the link of resistance R7 with the collector electrode of generator triode Q, the link of the 2nd pin of one end of described electric capacity C6 and resistance R7 and voltage control signal and power input interface P1 connects, the other end of described electric capacity C5 and the equal ground connection of the other end of electric capacity C6.
3. according to a kind of wideband voltage controlled oscillator described in claim 1 or 2, it is characterized in that: the model of described variable capacitance diode D1 and variable capacitance diode D2 is SMV1265.
4. according to a kind of wideband voltage controlled oscillator described in claim 1 or 2, it is characterized in that: the model of described generator triode Q is BFP520.
5. according to a kind of wideband voltage controlled oscillator described in claim 1 or 2, it is characterized in that: the length of described microstrip line TL1 is 320mil, the width of described microstrip line TL1 is 50mil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420513193.6U CN204131467U (en) | 2014-09-06 | 2014-09-06 | A kind of wideband voltage controlled oscillator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420513193.6U CN204131467U (en) | 2014-09-06 | 2014-09-06 | A kind of wideband voltage controlled oscillator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204131467U true CN204131467U (en) | 2015-01-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420513193.6U Expired - Fee Related CN204131467U (en) | 2014-09-06 | 2014-09-06 | A kind of wideband voltage controlled oscillator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204131467U (en) |
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2014
- 2014-09-06 CN CN201420513193.6U patent/CN204131467U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150128 Termination date: 20150906 |
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| EXPY | Termination of patent right or utility model |