CN205484545U - RF power detector circuit with temperature compensation function - Google Patents
RF power detector circuit with temperature compensation function Download PDFInfo
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- CN205484545U CN205484545U CN201620041557.4U CN201620041557U CN205484545U CN 205484545 U CN205484545 U CN 205484545U CN 201620041557 U CN201620041557 U CN 201620041557U CN 205484545 U CN205484545 U CN 205484545U
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Abstract
The utility model discloses a RF power detector circuit with temperature compensation function, including radio frequency signal input interface P1, power and output signal interface P2, triode Q1, diode D1 and diode D2, diode D1's positive pole meets with radio frequency signal input interface P1's a pin, and through resistance R1 ground connection, diode D2's positive pole meets through the resistance R3 of series connection and resistance R2 and diode D1's negative pole, diode D1's negative pole is still through electric capacity C5 ground connection, triode Q1's base and resistance R2 and resistance R3's link are connected, triode Q1's collecting electrode meets with power and output signal interface P2's the 1st pin, triode Q1's projecting pole meets with power and output signal interface P2's the 3rd pin. The utility model discloses circuit structure is simple, and it is convenient to realize, the temperature compensating performance is good, and the operational reliability is high, and the range of application is wide, can the wide application arrive in all kinds of instrumentation test equipment.
Description
Technical field
This utility model belongs to radio circuit technical field, is specifically related to a kind of have temperature compensation function
Radio frequency power detector circuit.
Background technology
In a lot of radio circuits, the amplitude of output signal becomes such as different operating frequency
Change, and many times need output amplitude not change.Such as: the output of transmitter is spy
Keep constant in determining band limits.Accordingly, it would be desirable to amplitude stabilization circuit completes this task；Further,
In the occasion requiring that range stability is the highest, it is desirable to amplitude not variation with temperature and change, now need
Want the drift of a kind of temperature-compensation circuit correction temperature, but, prior art also lacks circuit structure
Simply, reasonable in design, realize convenient and low cost, temperature-compensating performance is good, functional reliability is high,
The radio frequency power detector circuit of applied range.
Utility model content
Technical problem to be solved in the utility model is, for above-mentioned deficiency of the prior art, to carry
For a kind of radio frequency power detector circuit with temperature compensation function, its circuit structure is simple, design
Rationally, it is achieved convenient and low cost, temperature-compensating performance is good, and functional reliability is high, applied range,
Practical, it is possible to be widely applied in all kinds of instrument test equipment.
For solving above-mentioned technical problem, the technical solution adopted in the utility model is: one has temperature and mends
Repay the radio frequency power detector circuit of function, it is characterised in that: include radiofrequency signal input interface P1,
Power supply and output signal interface P2, audion Q1, diode D1 and diode D2, described radio frequency is believed
Number input interface P1 is the interface with two pins, and described power supply and output signal interface P2 are tool
There is one of the interface of three pins, the anode of described diode D1 and radiofrequency signal input interface P1
Pin connects, and by resistance R1 ground connection, another pin of described radiofrequency signal input interface P1
Ground connection, the anode of described diode D2 is by the resistance R3 connected and resistance R2 and described diode
The negative electrode of D1 connects, and the negative electrode of described diode D1 is also by electric capacity C5 ground connection, described diode
The minus earth of D2, the base stage of described audion Q1 connects with the connection end of resistance R2 and resistance R3,
The colelctor electrode of described audion Q1 and power supply and output signal interface P2 for being connected external power source
1st pin of cathode output end connects, the transmitting the most described radio-frequency power inspection of described audion Q1
Survey device circuit rectified signal outfan, and with power supply and the 3rd pin phase of output signal interface P2
Connect, also by resistance R4 ground connection；Being used for of described power supply and output signal interface P2 connects external electrical
Cathode output end the 2nd pin ground connection in source.
The above-mentioned radio frequency power detector circuit with temperature compensation function, it is characterised in that: described
The model of audion Q1 is 2N3904.
The above-mentioned radio frequency power detector circuit with temperature compensation function, it is characterised in that: described
The model of diode D1 and diode D2 is HMPS-2822.
The above-mentioned radio frequency power detector circuit with temperature compensation function, it is characterised in that: described
External power source be output voltage be the power supply of+6V.
This utility model compared with prior art has the advantage that
1, circuit structure of the present utility model is simple, reasonable in design, it is achieved convenient and low cost.
2, this utility model forms based on the diode design that model is HMPS-2822, and resistance R1 is
Input build-out resistor, electric capacity C5 is filter capacitor, utilizes diode D1 to complete detection, utilizes two poles
Pipe D2 completes temperature-compensating, diode D2 and resistance R3 and constitutes temperature-compensation circuit, diode
The junction resistance of D2 changes along with the electric current after temperature and rectification, and temperature-compensating performance is good, resistance R2
Constitute for power detection diode load, audion Q1 and resistance R4 and penetrate a grade follower, improve
The isolation performance of circuit, it is to avoid interact；Resistance R1 and resistance R2 can provide more preferable line
Property degree, functional reliability is high.
3, applied range of the present utility model, practical, it is possible to is widely applied to each quasi-instrument
In test equipment.
In sum, circuit structure of the present utility model is simple, reasonable in design, it is achieved convenient and cost
Low, temperature-compensating performance is good, and functional reliability is high, and applied range is practical, it is possible to extensively
It is applied in all kinds of instrument test equipment.
Below by drawings and Examples, the technical solution of the utility model is done and further retouches in detail
State.
Accompanying drawing explanation
Fig. 1 is circuit theory diagrams of the present utility model.
Detailed description of the invention
As it is shown in figure 1, the radio frequency power detector circuit with temperature compensation function of the present utility model,
Including radiofrequency signal input interface P1, power supply and output signal interface P2, audion Q1, diode
D1 and diode D2, described radiofrequency signal input interface P1 is the interface with two pins, described
Power supply and output signal interface P2 are the interface with three pins, the anode of described diode D1 with
One pin of radiofrequency signal input interface P1 connects, and by resistance R1 ground connection, described radio frequency is believed
Another pin ground connection of number input interface P1, the anode of described diode D2 is by the resistance of series connection
R3 and resistance R2 connects with the negative electrode of described diode D1, the negative electrode of described diode D1 also by
Electric capacity C5 ground connection, the minus earth of described diode D2, the base stage of described audion Q1 and resistance
The connection end of R2 and resistance R3 connects, and the colelctor electrode of described audion Q1 connects with power supply and output signal
1st pin of the cathode output end for connecting external power source of mouth P2 connects, described audion Q1
The rectified signal outfan of transmitting the most described radio frequency power detector circuit, and with power supply and output
3rd pin of signaling interface P2 connects, also by resistance R4 ground connection；Described power supply and output signal
Cathode output end the 2nd pin ground connection for connecting external power source of interface P2.
In the present embodiment, the model of described audion Q1 is 2N3904.
In the present embodiment, the model of described diode D1 and diode D2 is HMPS-2822.
In the present embodiment, described external power source be output voltage be the power supply of+6V.
One has temperature-compensating to this utility model based on the diode design that model is HMPS-2822
The radio frequency power detector circuit of function, operating frequency range is 10M～2GHz, and resistance R1 is input
Build-out resistor, electric capacity C5 is filter capacitor, utilizes diode D1 to complete detection, utilizes diode D2
Complete temperature-compensating, diode D2 and resistance R3 and constitute temperature-compensation circuit, diode D2's
Junction resistance changes along with the electric current after temperature and rectification, and resistance R2 is power detection diode load,
Audion Q1 and resistance R4 constitutes and penetrates a grade follower, improves the isolation performance of circuit, it is to avoid
Interact；Resistance R1 and resistance R2 can provide the more preferable linearity, in instrument test equipment
There is purposes widely.
The above, be only preferred embodiment of the present utility model, not makees this utility model any
Limit, every according to this utility model technical spirit, above example is made any simple modification,
Change and equivalent structure change, all still fall within the protection domain of technical solutions of the utility model.
Claims (4)
1. a radio frequency power detector circuit with temperature compensation function, it is characterised in that: include
Radiofrequency signal input interface P1, power supply and output signal interface P2, audion Q1, diode D1
With diode D2, described radiofrequency signal input interface P1 is the interface with two pins, described electricity
Source and output signal interface P2 are the interface with three pins, the anode of described diode D1 with penetrate
Frequently a pin of signal input interface P1 connects, and by resistance R1 ground connection, described radiofrequency signal
Another pin ground connection of input interface P1, the anode of described diode D2 is by the resistance R3 of series connection
Connecting with the negative electrode of resistance R2 with described diode D1, the negative electrode of described diode D1 is also by electricity
Hold C5 ground connection, the minus earth of described diode D2, the base stage of described audion Q1 and resistance R2
Connect with the connection end of resistance R3, the colelctor electrode of described audion Q1 and power supply and output signal interface
1st pin of the cathode output end for connecting external power source of P2 connects, described audion Q1's
Launch the rectified signal outfan of the most described radio frequency power detector circuit, and believe with power supply and output
3rd pin of number interface P2 connects, also by resistance R4 ground connection；Described power supply and output signal connect
Cathode output end the 2nd pin ground connection for connecting external power source of mouth P2.
2. according to the radio frequency power detector circuit with temperature compensation function described in claim 1,
It is characterized in that: the model of described audion Q1 is 2N3904.
3. according to the radio frequency power detector circuit with temperature compensation function described in claim 1,
It is characterized in that: the model of described diode D1 and diode D2 is HMPS-2822.
4. according to the radio frequency power detector circuit with temperature compensation function described in claim 1,
It is characterized in that: described external power source be output voltage be the power supply of+6V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620041557.4U CN205484545U (en) | 2016-01-17 | 2016-01-17 | RF power detector circuit with temperature compensation function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620041557.4U CN205484545U (en) | 2016-01-17 | 2016-01-17 | RF power detector circuit with temperature compensation function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205484545U true CN205484545U (en) | 2016-08-17 |
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ID=56669522
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620041557.4U Expired - Fee Related CN205484545U (en) | 2016-01-17 | 2016-01-17 | RF power detector circuit with temperature compensation function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205484545U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106405222A (en) * | 2016-09-20 | 2017-02-15 | 锐迪科微电子（上海）有限公司 | Radio frequency power detection circuit |
| CN114113772A (en) * | 2021-11-22 | 2022-03-01 | 上海创远仪器技术股份有限公司 | Power detection circuit structure for eliminating temperature drift error |
-
2016
- 2016-01-17 CN CN201620041557.4U patent/CN205484545U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106405222A (en) * | 2016-09-20 | 2017-02-15 | 锐迪科微电子（上海）有限公司 | Radio frequency power detection circuit |
| CN106405222B (en) * | 2016-09-20 | 2019-03-05 | 锐迪科微电子（上海）有限公司 | A kind of RF power sensing circuit |
| CN114113772A (en) * | 2021-11-22 | 2022-03-01 | 上海创远仪器技术股份有限公司 | Power detection circuit structure for eliminating temperature drift error |
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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: 20160817 Termination date: 20170117 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |