CN207992312U - A kind of rf power measurement device - Google Patents
A kind of rf power measurement device Download PDFInfo
- Publication number
- CN207992312U CN207992312U CN201721706478.1U CN201721706478U CN207992312U CN 207992312 U CN207992312 U CN 207992312U CN 201721706478 U CN201721706478 U CN 201721706478U CN 207992312 U CN207992312 U CN 207992312U
- Authority
- CN
- China
- Prior art keywords
- circuit
- power
- signal
- oxide
- semiconductor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Abstract
The utility model discloses a kind of rf power measurement devices comprising signal conditioning circuit, control circuit and power supply circuit；Wherein, the signal conditioning circuit carries out impedance matching and decaying to the radiofrequency signal of input, and is amplified after radiofrequency signal is converted direct current signal；The direct current signal that the control circuit exports the signal conditioning circuit resolves, and exports result；The power supply circuit is used to power for the signal conditioning circuit and the control circuit.Therefore, when the power supply circuit of the utility model is applied in rf power measurement instrument, portability can be promoted, and more perfect function can be provided.
Description
Technical field
The utility model is related to electronic circuit technology field, more particularly to a kind of rf power measurement device.
Background technology
Currently, radio-frequency technique has been widely used in the fields such as electronic countermeasure, electronic communication and aerospace, and it is existing
Rf power measurement instrument it is complicated, volume is big, inconvenient to carry, and some portable rf power measurement instruments
Due to volumetric constraint, function is incomplete.Therefore, it is necessary to be optimized to rf power measurement apparatus structure, that is, promoted portable
Property, and more perfect function is provided.
Utility model content
The purpose of the utility model is to overcome the above-mentioned deficiencies in the presence of the prior art, provide a kind of radio-frequency power survey
Device is measured, that is, promotes portability, and provide more perfect function.
In order to realize that above-mentioned purpose of utility model, the utility model provide following technical scheme：
A kind of rf power measurement device comprising signal conditioning circuit, control circuit and power supply circuit；Wherein, described
Signal conditioning circuit carries out impedance matching and decaying to the radiofrequency signal of input, and is carried out after radiofrequency signal is converted direct current signal
Amplification；The direct current signal that the control circuit exports the signal conditioning circuit resolves, and exports result；The power supply
Circuit is used to power for the signal conditioning circuit and the control circuit.
According to a kind of specific embodiment, in the rf power measurement device of the utility model, the signal condition electricity
Road includes impedance matching circuit, radio frequency stepping circuit, detecting circuit, direct current stepping circuit and differential amplifier circuit；Wherein, it inputs
Radiofrequency signal corresponding impedance matching is obtained by the impedance matching circuit, the radio frequency stepping circuit pass through switch it is different
Branch and different degrees of decaying is carried out to radiofrequency signal, radiofrequency signal is converted into direct current signal by the detecting circuit, institute
State the enhanced processing that differential amplifier circuit carries out direct current signal certain multiple, and the amplification factor of the differential amplifier circuit
Switched by the direct current stepping circuit control.
According to a kind of specific embodiment, in the rf power measurement device of the utility model, the control circuit packet
Include microprocessor, storage chip, the first extended chip, the second extended chip, usb circuit and SPI interface circuitry；Wherein,
The microprocessor respectively with the storage chip, first extended chip, second extended chip, the USB interface
Circuit is connected with the SPI interface circuitry, also, the microprocessor obtains calibration data by the storage chip, passes through
First extended chip is connect with display module, is connect with the keyboard input module by second extended chip, is led to
The usb circuit and external device communication are crossed, is connect with RF signal collection circuit by the SPI interface circuitry.
According to a kind of specific embodiment, in the rf power measurement device of the utility model, the power supply circuit packet
Include power selection circuit, built-in power and power conversion module；Wherein, the power selection circuit by the built-in power into
Row power supply, when the power selection circuit connect at least one external power supply, then the connection of disconnection and the internal battery, and
It is powered by the external power supply；The built-in power or the external power supply are obtained by the power conversion module
Required direct current.
Compared with prior art, the beneficial effects of the utility model：
The utility model rf power measurement device includes signal conditioning circuit, control circuit and power supply circuit；Wherein, believe
Number modulate circuit carries out impedance matching and decaying to the radiofrequency signal of input, and will radiofrequency signal convert direct current signal after put
Greatly；The direct current signal that control circuit exports signal conditioning circuit resolves, and exports result；Power supply circuit is used to be signal
Modulate circuit and control circuit power supply.Therefore, when the power supply circuit of the utility model is applied in rf power measurement instrument, i.e.,
Portability can be promoted, and more perfect function can be provided.
Description of the drawings：
Fig. 1 is the structural schematic diagram of the utility model rf power measurement device；
Fig. 2 is the structural schematic diagram of the utility model power supply circuit；
Fig. 3 is the electricity that the utility model signal conditioning circuit includes impedance matching circuit, radio frequency stepping circuit, detecting circuit
Lu Tu；
Fig. 4 is the circuit diagram that the utility model signal conditioning circuit includes direct current stepping circuit and differential amplifier circuit；
Fig. 5 is the circuit diagram of the utility model power selection circuit.
Specific implementation mode
The utility model is described in further detail with reference to test example and specific implementation mode.But it should not be by this
The range for being interpreted as the above-mentioned theme of the utility model is only limitted to embodiment below, all to be realized based on the utility model content
Technology belongs to the scope of the utility model.
In conjunction with the structural schematic diagram of the utility model rf power measurement device shown in FIG. 1；The utility model radio frequency work(
Rate measuring device includes signal conditioning circuit, control circuit and power supply circuit.
Wherein, signal conditioning circuit includes impedance matching circuit, radio frequency stepping circuit, detecting circuit, direct current stepping circuit
And differential amplifier circuit.Wherein, the radiofrequency signal of input obtains corresponding impedance matching, radio frequency stepping by impedance matching circuit
Circuit carries out radiofrequency signal different degrees of decaying by switching different branches, and radiofrequency signal is converted by detecting circuit
Direct current signal, differential amplifier circuit carry out direct current signal the enhanced processing of certain multiple, and the amplification of differential amplifier circuit
Multiple is switched by the direct current stepping circuit control.
Specifically, the radio frequency stepping circuit has a plurality of branch, and every branch has different impedance operators, and leads to
Corresponding controlled switch is crossed to connect with RF signal input end.The direct current stepping circuit has a plurality of branch, and every branch
It is upper that the resistance of different resistance values is set, and connect with RF signal input end by corresponding controlled switch.It is described straight when implementing
Feedback resistance of the resistance of each road of flow point shelves circuit as the differential amplifier circuit.Radio frequency stepping circuit and direct current
The controlled switch chip used in stepping circuit.
Wherein, control circuit includes microprocessor, storage chip, the first extended chip, the second extended chip, USB interface
Circuit and SPI interface circuitry.The microprocessor expands with the storage chip, first extended chip, described second respectively
Exhibition chip, the usb circuit are connected with the SPI interface circuitry, also, the microprocessor passes through the storage chip
Calibration data is obtained, is connect with display module by first extended chip, is pressed with described by second extended chip
Key input module connects, and by the usb circuit and external device communication, is believed by the SPI interface circuitry and radio frequency
The connection of number Acquisition Circuit.Moreover, the microprocessor is also powered by the usb circuit, and the microprocessor
Protection chip is equipped between device and the usb circuit, for being powered off immediately when overvoltage or short circuit occurs.
In conjunction with the structural schematic diagram of the utility model power supply circuit shown in Fig. 2；Wherein, power supply circuit includes power supply selection
Circuit, built-in power and power conversion module.Moreover, power selection circuit is powered by built-in power, when power supply selects
Circuit is connect at least one external power supply, and the button trigger circuit disconnects the connection with the internal battery, and passes through institute
External power supply is stated to be powered；And the built-in power or the external power supply obtain institute by the power conversion module
Need direct current.Meanwhile power conversion module includes each power supply changeover device, and signal condition is obtained by corresponding power supply changeover device
Reference voltage needed for circuit, the microcontroller of control circuit, the operating voltage of storage chip, SPI interface circuitry.
Specifically, the utility model further includes usb circuit, the input terminal of the usb circuit and external power supply
Connection, to obtain power input by USB interface.
In conjunction with Fig. 3 and circuit diagram shown in Fig. 4；In the signal conditioning circuit of the utility model, dynamic is measured in order to improve
Range specifications carry out stepping, which is divided into three by radio frequency stepping circuit before detection to radiofrequency signal
Shelves, i.e. three branches, wherein first order circuit is unattenuated, and second level circuit is made of R7, R12, R13, decays to a certain degree, the
Three-level circuit is made of on the basis of the second level R15, R17, R18, then is decayed to a certain degree.Radiofrequency signal passes through detector diode
Any one in D1, D2 and D3 is changed into direct current signal, further, carries out second of stepping processing to direct current signal, passes through
The feedback resistance size of amplifier is controlled, R9, R10, amplification quantity is 10 times, 100 times, 1000 times to R11 successively.Radio frequency stepping circuit and
Controlled switch N1B, N1C, N1D, N1E and the N1F used in direct current stepping circuit can be collected by the same integrated switch chip
Middle control provides a variety of different gears, and as needed to control radio frequency stepping circuit and direct current stepping circuit together
It chooses gear to be amplified signal, to meet measurement demand.
In conjunction with circuit diagram shown in fig. 5；The power selection circuit of the utility model is used in external power supply, USB power source, electricity
It is automatically selected in the power supply of pond.
Implement when, power selection circuit include the first diode, the second diode, third diode, the first metal-oxide-semiconductor,
Second metal-oxide-semiconductor and first resistor.Wherein, the first diode and the second Diode series, the first diode and third diode
The input terminal of forward end and external power supply connects, and the backward end and the grid of the first metal-oxide-semiconductor and the second metal-oxide-semiconductor of third diode connect
It connecing, the source electrode connection of the source electrode of the first metal-oxide-semiconductor and the second metal-oxide-semiconductor, the drain electrode of the first metal-oxide-semiconductor is connect with the built-in power, the
The drain electrode of two metal-oxide-semiconductors and the backward end of the second diode are connect with the input terminal of the power conversion module；The one of first resistor
End is connect with the grid of the first metal-oxide-semiconductor and the second metal-oxide-semiconductor, and the other end is connect with the source electrode of the first metal-oxide-semiconductor and the second metal-oxide-semiconductor.
According to above-mentioned connection relation, when having external power supply or USB power source carries out power input, the conducting of the second metal-oxide-semiconductor,
Built-in power is not powered.The built-in power of the utility model is dismountable No.5 cell.
The utility model is in the power supply circuit of rf power measurement, power conversion module to include that switching mode DC-DC turns
Change chip and buck DC-DC conversion chip.Switching mode DC-DC conversion chips have low voltage test function, control source
Range is 1.2V to 6.5V.
Claims (9)
1. a kind of rf power measurement device, which is characterized in that including signal conditioning circuit, control circuit and power supply circuit；Its
In,
The signal conditioning circuit carries out impedance matching and decaying to the radiofrequency signal of input, and radiofrequency signal conversion direct current is believed
It is amplified after number；The direct current signal that the control circuit exports the signal conditioning circuit resolves, and exports result；
The power supply circuit is used to power for the signal conditioning circuit and the control circuit.
2. rf power measurement device as described in claim 1, which is characterized in that the signal conditioning circuit includes impedance
With circuit, radio frequency stepping circuit, detecting circuit, direct current stepping circuit and differential amplifier circuit；Wherein, the radiofrequency signal of input is logical
It crosses the impedance matching circuit and obtains corresponding impedance matching, the radio frequency stepping circuit is by switching different branches to penetrating
Frequency signal carries out different degrees of decaying, and radiofrequency signal is converted into direct current signal, the differential amplification electricity by the detecting circuit
Road carries out direct current signal the enhanced processing of certain multiple, and the amplification factor of the differential amplifier circuit is by the direct current point
Shelves circuit control switching.
3. rf power measurement device as claimed in claim 2, which is characterized in that the radio frequency stepping circuit has a plurality of branch
Road, and every branch has different impedance operators, and connect with RF signal input end by corresponding controlled switch.
4. rf power measurement device as claimed in claim 2, which is characterized in that the direct current stepping circuit has a plurality of branch
Road, and the resistance of different resistance values is arranged in every branch road, and connect with RF signal input end by corresponding controlled switch.
5. rf power measurement device as claimed in claim 4, which is characterized in that each branch of the direct current stepping circuit
On feedback resistance of the resistance as the differential amplifier circuit.
6. rf power measurement device as described in claim 1, which is characterized in that the control circuit include microprocessor,
Storage chip, the first extended chip, the second extended chip, usb circuit and SPI interface circuitry；Wherein, the microprocessor
Respectively with the storage chip, first extended chip, second extended chip, the usb circuit and the SPI
Interface circuit connects, also, the microprocessor obtains calibration data by the storage chip, extends core by described first
Piece is connect with display module, is connect with keyboard input module by second extended chip, by the usb circuit with
External device communication is connect by the SPI interface circuitry with RF signal collection circuit.
7. rf power measurement device as described in claim 1, which is characterized in that the power supply circuit includes power supply selection electricity
Road, built-in power and power conversion module；Wherein, the power selection circuit is powered by the built-in power, works as institute
It states power selection circuit to connect at least one external power supply, disconnects the connection with the built-in power, and by described external
Power supply is powered；And the built-in power or the external power supply obtain required direct current by the power conversion module
Electricity.
8. rf power measurement device as claimed in claim 7, which is characterized in that the power selection circuit includes the one or two
Pole pipe, the second diode, third diode, the first metal-oxide-semiconductor, the second metal-oxide-semiconductor and first resistor；Wherein, the first diode and
Two Diode series, the input terminal connection of the forward end and external power supply of the first diode and third diode, third diode
Backward end connect with the grid of the first metal-oxide-semiconductor and the second metal-oxide-semiconductor, the source electrode of the source electrode of the first metal-oxide-semiconductor and the second metal-oxide-semiconductor connects
It connects, the drain electrode of the first metal-oxide-semiconductor is connect with the built-in power, the drain electrode of the second metal-oxide-semiconductor and backward end and the institute of the second diode
State the input terminal connection of power conversion module；One end of first resistor is connect with the grid of the first metal-oxide-semiconductor and the second metal-oxide-semiconductor,
The other end is connect with the source electrode of the first metal-oxide-semiconductor and the second metal-oxide-semiconductor.
9. rf power measurement device as claimed in claim 7, which is characterized in that further include usb circuit, the USB
The input terminal of interface circuit and external power supply connects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721706478.1U CN207992312U (en) | 2017-12-08 | 2017-12-08 | A kind of rf power measurement device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721706478.1U CN207992312U (en) | 2017-12-08 | 2017-12-08 | A kind of rf power measurement device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207992312U true CN207992312U (en) | 2018-10-19 |
Family
ID=63816590
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721706478.1U Active CN207992312U (en) | 2017-12-08 | 2017-12-08 | A kind of rf power measurement device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207992312U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107831360A (en) * | 2017-12-08 | 2018-03-23 | 成都前锋电子仪器有限责任公司 | A kind of rf power measurement device |
| CN110460325A (en) * | 2019-09-02 | 2019-11-15 | 深圳市强军科技有限公司 | Switch driving circuit and electronic switch |
-
2017
- 2017-12-08 CN CN201721706478.1U patent/CN207992312U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107831360A (en) * | 2017-12-08 | 2018-03-23 | 成都前锋电子仪器有限责任公司 | A kind of rf power measurement device |
| CN107831360B (en) * | 2017-12-08 | 2024-01-30 | 成都前锋电子仪器有限责任公司 | Radio frequency power measuring device |
| CN110460325A (en) * | 2019-09-02 | 2019-11-15 | 深圳市强军科技有限公司 | Switch driving circuit and electronic switch |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN207992312U (en) | A kind of rf power measurement device | |
| CN103207363B (en) | A kind of instrument measuring solar cell parameter | |
| CN106771632A (en) | Multi-channel DC resistance meter | |
| CN206400004U (en) | The single-phase 3 line intelligent electric meter of high current | |
| CN203084152U (en) | Triode transistor characteristic parameter testing system | |
| CN211348584U (en) | Leakage current tester | |
| CN106771633A (en) | Hand-held instrument for measuring DC resistance | |
| CN202735404U (en) | A power detection circuit and an electric fan using the power detection circuit | |
| CN207472956U (en) | A kind of signal conditioning circuit for rf power measurement | |
| CN206077072U (en) | A kind of electric energy control system based on ADE7755 | |
| CN203324400U (en) | Electric appliance energy consumption metering system | |
| CN201955409U (en) | Key control panel testing circuit | |
| CN107831360A (en) | A kind of rf power measurement device | |
| CN206038895U (en) | Harmonic is multichannel error calculation device for electric energy meter verification | |
| CN104678854A (en) | Remote controller, temperature sampling control system and temperature sampling control method | |
| CN204206279U (en) | A kind of standby power consumption of mobile phone test circuit | |
| CN108333431A (en) | Electronic tag resistance multi-path multi-machine detection device | |
| CN204479719U (en) | The detection alarm device of poly-lithium battery | |
| CN204807638U (en) | Multi -functional socket formula electric energy measurement appearance | |
| CN203241479U (en) | Inductance and capacitance measuring instrument based on switching circuit | |
| CN203324366U (en) | Power supply voltage detection circuit | |
| CN203826926U (en) | Internal circuit of undervoltage release | |
| CN203595761U (en) | Detection device of lithium battery charger | |
| CN202177657U (en) | Digital electrical parameter measuring instrument | |
| CN207037008U (en) | Insulating check instrument and insulating check system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |