CN204681385U - Radio-frequency emission power test pen - Google Patents
Radio-frequency emission power test pen Download PDFInfo
- Publication number
- CN204681385U CN204681385U CN201520438454.7U CN201520438454U CN204681385U CN 204681385 U CN204681385 U CN 204681385U CN 201520438454 U CN201520438454 U CN 201520438454U CN 204681385 U CN204681385 U CN 204681385U
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- radio
- emission power
- circuit
- frequency emission
- detector diode
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Abstract
The utility model is that its feature comprises about a kind of radio-frequency emission power test pen: radio-frequency signal detection and multiplication of voltage detection filter circuit, adjustment of sensitivity and indicating circuit.The model that in described radio-frequency signal detection and multiplication of voltage detection filter circuit, detector diode D1 ~ D2 selects is 1N60.Radio-frequency emission power test pen described in the utility model can be used for the RF signal power measuring various Miniature RF transmitter, mobile phone sends, and the measurement result of radiofrequency signal can meet general measure technical requirement.According to whether lighting of LED in circuit, can judge whether intercom has emitting radio frequency signal exactly, and according to the bright dark degree of LED, roughly judge the size of radio-frequency emission power.It has detects the features such as radio spectrum is wide, measurement sensistivity is higher, stable work in work, cost of manufacture are low.
Description
Technical field
The utility model belongs to radiofrequency signal field of measuring technique, is about a kind of radio-frequency emission power test pen.
Background technology
Method and instrument for measuring radio-frequency emission power are a lot, although specialty is for measuring the instrument function admirable of radio-frequency emission power on market, there is price high, amateur unit or personnel are difficult to the reality such as acceptance.In order to make up these shortcoming, develop that a kind of circuit structure is succinct, cost of manufacture is low, stable work in work and the radio-frequency emission power test pen of practicality is necessary.
By its design and installation in the test penholder of a universal instrument, as long as by the probe of test pen near radio-frequency (RF) transmitter, as: the top of mobile phone, intercom transmitting antenna, in circuit, whether LED lights, can judge whether intercom has emitting radio frequency signal exactly, and according to the bright dark degree of LED, the size of radio-frequency emission power roughly can be judged; With 2.5V voltmeter head as radio-frequency emission power testing indicator without touching part, radio-frequency emission power test pen is used to measure vehicle radio station or mobile phone, power amplifier of interphone level and each test point promoting level, to judge which rank of breaks down.
Radio-frequency emission power test pen described in the utility model can be used for the RF signal power measuring various Miniature RF transmitter, mobile phone sends, and the measurement result of radiofrequency signal can meet general measure technical requirement.It has detects the features such as radio spectrum is wide, measurement sensistivity is higher, stable work in work, cost of manufacture are low.
Below describe in detail radio-frequency emission power test pen described in the utility model necessity involved in implementation process, guardian technique content.
Utility model content
Goal of the invention and beneficial effect: radio-frequency emission power test pen described in the utility model can be used for the RF signal power measuring various Miniature RF transmitter, mobile phone sends, and the measurement result of radiofrequency signal can meet general measure technical requirement.According to whether lighting of LED in circuit, can judge whether intercom has emitting radio frequency signal exactly, and according to the bright dark degree of LED, roughly judge the size of radio-frequency emission power; With 2.5V voltmeter head as radio-frequency emission power testing indicator without touching part, radio-frequency emission power test pen is used to measure vehicle radio station or mobile phone, power amplifier of interphone level and each test point promoting level, to judge which rank of breaks down.It has the features such as circuit structure is simple, measurement sensistivity is higher, stable work in work, cost of manufacture are low.
Circuit working principle: radio-frequency emission power test pen is very sensitive for measuring micropower electromagnetic signal, because this circuit is mainly as relative radio-frequency power compare test, it is more convenient to be used for observational measurement radio-frequency emission power.The electromagnetic signal that the detection probe TX test modulator transmitting terminal of direct radio-frequency emission power test pen sends, also can by the radiofrequency signal of detection probe TX point survey drive(r) stage output.
Use multiplication of voltage detection to increase the detected intensity of electromagnetic signal in circuit, potentiometer RP is for regulating the sensitivity of 2.5V voltmeter head.After this circuit is manufactured, require circuit board to be placed in can, and require can housing connection circuit ground GND, with the interference of shield electromagnetic signals.
Radio-frequency emission power test pen is when measuring electromagnetic signal power, and 2.5V voltmeter head throw of pointer ground amplitude is larger, then illustrate that tested radio-frequency emission power is then larger; Otherwise tested radio-frequency emission power is then less.
Technical scheme: radio-frequency emission power test pen, it comprises radio-frequency signal detection and multiplication of voltage detection filter circuit, adjustment of sensitivity and indicating circuit, it is characterized in that:
Radio-frequency signal detection and multiplication of voltage detection filter circuit: it is made up of detection probe TX, coupling capacitance C1, detector diode D1, detector diode D2, filter capacitor C2, the model that detector diode D1 ~ D2 selects is 1N60, the non-test side of detection probe TX connects the negative pole of detector diode D1 and the positive pole of detector diode D2 by coupling capacitance C1, the negative pole of detector diode D2 connects one end of filter capacitor C2, the positive pole of detector diode D1 and the other end connection circuit ground GND of filter capacitor C2;
Adjustment of sensitivity and indicating circuit: it is made up of LED, potentiometer RP and 2.5V voltmeter head, the positive pole of LED connects the negative pole of detector diode D2 and one end of potentiometer RP, the other end of potentiometer RP and the positive pole of activity termination 2.5V voltmeter head thereof, the negative pole of LED and the negative pole connection circuit ground GND of 2.5V voltmeter head.
Accompanying drawing explanation
Accompanying drawing 1 is the embodiment circuit working schematic diagram that the utility model provides a radio-frequency emission power test pen.
Embodiment
According to the radio-frequency emission power test pen circuit working schematic diagram shown in accompanying drawing 1 and accompanying drawing explanation, and according to annexation between components and parts in each several part circuit described in utility model content, and components and parts technical parameter described in execution mode requires and circuit production main points are carried out enforcement and can be realized the utility model, is further described correlation technique of the present utility model below in conjunction with embodiment.
Its technical parameter of components and parts and selection requirement
D1, D2 are detector diode, and the model selected is 1N60;
RP is potentiometer, the resistance 1.8K Ω of use;
LED is light-emitting diode, selects that power consumption is minimum, the highlighted red light emitting diodes of diameter ￠ 5;
C1 is coupling capacitance, and the capacity selected is 20PF, the withstand voltage ceramic disc capacitor for 40V; C2 is filter capacitor, selects capacity to be 0.022 μ F, the withstand voltage ceramic disc capacitor for 40V;
2.5V voltmeter head, requires to use high resistance voltmeter head, the direct current 2.5V shelves of recommendation FM-10 type pointer multimeter.
Circuit production main points, circuit debugging and using method
Because the circuit structure of radio-frequency emission power test pen is very simple, comparison is easy, as long as the electronic devices and components performance generally selected is intact, and the components and parts annexation to specifications in accompanying drawing 1 is welded, physical connection line and welding quality are through carefully checking correctly, and circuit of the present utility model does not substantially need to carry out any debugging and can normally work;
Radio-frequency emission power test pen is when measuring radiofrequency signal, and 2.5V voltmeter head throw of pointer ground amplitude is larger, then illustrate that tested radio-frequency emission power is then larger; Otherwise tested radio-frequency emission power is then less; 2.5V voltmeter head recommendation FM-10 type universal instrument direct current 2.5V voltage gear substitutes;
Potentiometer RP detects the sensitivity of radio-frequency emission power for adjusting;
After this circuit is manufactured, require circuit board to be placed in iron sheet box, and require circuit ground GND to connect iron sheet box housing, with shield electromagnetic interference;
Grasp the size of the tested radio-frequency emission power of correct interpretation of radio-frequency emission power test pen, need one section of use procedure, to accumulate interpretation experience.
Circuit components layout of the present utility model, circuit structure design, its shape and size etc. of outward appearance are not all key technologies of the present utility model; neither the claimed technology contents of the utility model; because not affecting the utility model specific implementation process, therefore do not illustrate one by one in the description.
Claims (1)
1. a radio-frequency emission power test pen, it comprises radio-frequency signal detection and multiplication of voltage detection filter circuit, adjustment of sensitivity and indicating circuit, it is characterized in that:
Described radio-frequency signal detection and multiplication of voltage detection filter circuit are made up of detection probe TX, coupling capacitance C1, detector diode D1, detector diode D2, filter capacitor C2, the model that detector diode D1 ~ D2 selects is 1N60, the non-test side of detection probe TX connects the negative pole of detector diode D1 and the positive pole of detector diode D2 by coupling capacitance C1, the negative pole of detector diode D2 connects one end of filter capacitor C2, the positive pole of detector diode D1 and the other end connection circuit ground GND of filter capacitor C2;
Described adjustment of sensitivity and indicating circuit are made up of LED, potentiometer RP and 2.5V voltmeter head, the positive pole of LED connects the negative pole of detector diode D2 and one end of potentiometer RP, the other end of potentiometer RP and the positive pole of activity termination 2.5V voltmeter head thereof, the negative pole of LED and the negative pole connection circuit ground GND of 2.5V voltmeter head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520438454.7U CN204681385U (en) | 2015-06-24 | 2015-06-24 | Radio-frequency emission power test pen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520438454.7U CN204681385U (en) | 2015-06-24 | 2015-06-24 | Radio-frequency emission power test pen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204681385U true CN204681385U (en) | 2015-09-30 |
Family
ID=54181052
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520438454.7U Expired - Fee Related CN204681385U (en) | 2015-06-24 | 2015-06-24 | Radio-frequency emission power test pen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204681385U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104980231A (en) * | 2015-06-24 | 2015-10-14 | 何林 | Radio frequency emission power test pen |
-
2015
- 2015-06-24 CN CN201520438454.7U patent/CN204681385U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104980231A (en) * | 2015-06-24 | 2015-10-14 | 何林 | Radio frequency emission power test pen |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150930 Termination date: 20160624 |