CN209170388U - Room temperature for radio integration test module calibrates circuit - Google Patents
Room temperature for radio integration test module calibrates circuit Download PDFInfo
- Publication number
- CN209170388U CN209170388U CN201822134297.7U CN201822134297U CN209170388U CN 209170388 U CN209170388 U CN 209170388U CN 201822134297 U CN201822134297 U CN 201822134297U CN 209170388 U CN209170388 U CN 209170388U
- Authority
- CN
- China
- Prior art keywords
- circuit
- output
- signal
- analog converter
- operational amplifier
- 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
Landscapes
- Amplifiers (AREA)
Abstract
The utility model relates to testing radio fields, and in particular to a kind of room temperature calibration circuit for radio integration test module, including digital analog converter, the first operational amplifier circuit, second operational amplifier circuit, crystal oscillator, clock buffer circuit, trigger, filter circuit, filter amplification circuit；The input terminal that signal enters the digital analog converter is controlled, the signal of the first output end output of the digital analog converter generates required amplitude control signal as output after first operational amplifier circuit amplification；For the signal of the second output terminal output of the digital analog converter after second operational amplifier circuit amplification, output frequency controls signal；The Frequency and Amplitude for providing the operation is stable to radio integration test module calibrates circuit, realizes and calibrates on a point frequency to complete machine, to achieve the purpose that the signal in the qualified target zone of output.
Description
Technical field
It is the utility model relates to a kind of testing radio device, in particular to a kind of for radio comprehensive test device
Room temperature calibrates circuit.
Background technique
Electronic product is very flourishing now, and demand is also comparable big.It is usually big by factory when manufacturing electronic product
After amount manufacture, then via the various functions of test organization's test electronic product.Only pass through the electronic product of all test items
It can dispatch from the factory and send to client, to ensure that dispatched from the factory electronic product maintains certain level.However, existing in communication device at present
Field test equipment uses single test, and an instrument only measures a few functions, can not achieve the measurement of multiple functions.Cause
This, needs to study the testing radio device of one kind of multiple functional tests, while realizing multiple functions measurement, it is necessary to set
Count a kind of Frequency and Amplitude calibration circuit that can make test device the operation is stable.
Utility model content
The purpose of utility model of the utility model is: in order to which solution must not be on same instrument to the measurement of multiple functions
The problem of, a kind of room temperature calibration circuit for radio comprehensive measurement instrument is provided.
In order to realize above-mentioned purpose of utility model, the utility model provides following technical scheme:
A kind of room temperature calibration circuit for radio integration test module, including digital analog converter, the first operational amplifier circuit,
Second operational amplifier circuit, crystal oscillator, clock buffer circuit, trigger, filter circuit, filter amplification circuit；
Control the input terminal that signal enters the digital analog converter, the letter of the first output end output of the digital analog converter
Number after first operational amplifier circuit amplification, required amplitude control signal is generated as output；
The signal of the second output terminal output of the digital analog converter is after second operational amplifier circuit amplification, output frequency
Rate controls signal；Frequency control signal enters the crystal oscillator, and the crystal oscillator provides original clock signal to the clock buffer electricity
Road and the filter amplification circuit；First output end of clock buffer connects the trigger, the trigger output
Signal generates 2 sub-frequency clock signals of 40M after filter circuit filters；The second output terminal of the clock buffer exports
The clock signal of 80M；The first output end of filter amplification circuit output signal 1, second output terminal output signal 2；
First operational amplifier circuit includes the first transport and placing device, the non-inverting input terminal and digital analog converter of first transport and placing device
Output end connection；Meanwhile the non-inverting input terminal of first transport and placing device also passes through resistance eutral grounding；The reverse phase of first transport and placing device is defeated
Enter end by resistance eutral grounding, while also connecting by resistance with itself output end.
Second operational amplifier circuit includes the second transport and placing device, and the non-inverting input terminal and the digital-to-analogue of second transport and placing device turn
The output end of parallel operation connects, and the inverting input terminal of second transport and placing device is connect with itself output end.
The clock buffer circuit includes amplifier and clock buffer, and original clock signal enters amplifier in,
Amplifier out connects clock buffer, and amplifier out is connect with input terminal by resistance；The clock buffer
One output end connects resistance, exports the clock signal of 80M；
The trigger is D flip-flop, and the clock buffer second output terminal connects the port of the trigger
CLK, the port Q output of trigger export the signal of 40M, the port of trigger by filter circuitConnect the port of trigger
D。
Compared with prior art, the utility model has the beneficial effects that the utility model provides one kind for radio synthesis
The room temperature of test module calibrates circuit, generates amplitude control signal and frequency control letter according to control signal with digital analog converter
Number, the Frequency and Amplitude for providing the operation is stable to radio integration test module calibrates circuit, realizes on a point frequency to complete machine
It is calibrated, to achieve the purpose that the signal in the qualified target zone of output.
Detailed description of the invention:
Fig. 1 is the principles of the present invention block diagram
Fig. 2 is the circuit connection diagram of digital analog converter, the first operational amplifier circuit and the second operational amplifier circuit.
Fig. 3 is the circuit connection diagram of crystal oscillator, clock buffer circuit, trigger, filter circuit and filter amplification circuit.
Specific embodiment
The utility model is described in further detail below with reference to test example and specific embodiment.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 content of the present invention
Technology belongs to the scope of the utility model.
A kind of room temperature calibration circuit for radio integration test module, including digital analog converter, the first operational amplifier circuit,
Second operational amplifier circuit, crystal oscillator, clock buffer circuit, trigger, filter circuit, filter amplification circuit；
If Fig. 2, the port clk of the digital analog converter D6 receive clock control signal, port Din receives control instruction letter
Number, port/cs receiving sheet selected control signal；The signal of the port Voutb output of the digital analog converter D6 passes through described first
Required amplitude control signal is exported after operational amplifier circuit amplification；The signal warp of the port Vouta output of the digital analog converter D6
After crossing the second operational amplifier circuit amplification, output frequency controls signal.
First operational amplifier circuit includes the first transport and placing device N20A, the homophase input port 3 of the first transport and placing device N20A
It is connect with the output port Voutb of digital analog converter D6；Meanwhile the homophase input port 3 of first transport and placing device also passes through electricity
Hinder R93 ground connection；The anti-phase input port 2 of first transport and placing device is grounded by resistance R94, while also defeated with itself by resistance R99
Exit port 1 connects.
Second operational amplifier circuit includes the second transport and placing device N20B, the homophase input port 5 of the second transport and placing device N20B
It is connect with the output port 5 of the digital analog converter, the anti-phase input port 6 of second transport and placing device and itself output port 7
Connection.
Such as Fig. 3, frequency control signal enters the port Vc of the crystal oscillator N17, the port Vout output of the crystal oscillator N17
Original clock signal is supplied to the clock buffer circuit and the filter amplification circuit；The clock buffer circuit includes amplification
Device N18 and clock buffer N16, original clock signal enter amplifier N18 input terminal, and amplifier N18 output end connects clock
The port CLKIN of buffer N16, amplifier N18 output end are connect with input terminal by resistance R91；The clock buffer
The port 1Y0 output of N16 exports the signal of 80M by resistance R81；The port 1Y1 connection trigger of the clock buffer N16
The port Q output of the port CLK of N19, trigger N19 export the signal of 40M, the port of trigger by filter circuitEven
Meet the port D of trigger；The first output end of filter amplification circuit output signal 1, second output terminal output signal 2.
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.
Claims (5)
1. a kind of room temperature for radio integration test module calibrates circuit, which is characterized in that including digital analog converter, first
Operational amplifier circuit, the second operational amplifier circuit, crystal oscillator, clock buffer circuit, trigger, filter circuit, filter amplification circuit；
Control the input terminal that signal enters the digital analog converter, the signal warp of the first output end output of the digital analog converter
After crossing the first operational amplifier circuit amplification, required amplitude control signal is generated as output；
The signal of the second output terminal output of the digital analog converter is after second operational amplifier circuit amplification, output frequency control
Signal processed；Frequency control signal enters the crystal oscillator, the crystal oscillator provide original clock signal to the clock buffer circuit and
The filter amplification circuit；First output end of clock buffer circuit connects the trigger, the letter of the trigger output
The clock signal of 40M is generated number after filter circuit filters；The clock buffer circuit second output terminal output 80M when
Clock signal；The first output end of filter amplification circuit output signal 1, second output terminal output signal 2.
2. the room temperature according to claim 1 for radio integration test module calibrates circuit, which is characterized in that described
First operational amplifier circuit includes the first transport and placing device, and the non-inverting input terminal of first transport and placing device and the output end of digital analog converter connect
It connects；Meanwhile the non-inverting input terminal of first transport and placing device also passes through resistance eutral grounding；The inverting input terminal of first transport and placing device passes through electricity
Resistance ground connection, while also being connect by resistance with itself output end.
3. the room temperature according to claim 1 for radio integration test module calibrates circuit, which is characterized in that described
Second operational amplifier circuit includes the second transport and placing device, the non-inverting input terminal of second transport and placing device and the output end of the digital analog converter
Connection, the inverting input terminal of second transport and placing device are connect with itself output end.
4. the room temperature according to claim 1 for radio integration test module calibrates circuit, which is characterized in that described
Clock buffer circuit includes amplifier and clock buffer, and original clock signal enters amplifier in, amplifier out
Clock buffer is connected, amplifier out is connect with input terminal by resistance；The first output end of clock buffer connection
Resistance exports the clock signal of 80M.
5. the room temperature according to claim 4 for radio integration test module calibrates circuit, which is characterized in that described
Trigger is D flip-flop, and the clock buffer second output terminal connects the port CLK of the trigger, the end of trigger
Mouth Q output exports the signal of 40M, the port of trigger by filter circuitConnect the port D of trigger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822134297.7U CN209170388U (en) | 2018-12-18 | 2018-12-18 | Room temperature for radio integration test module calibrates circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822134297.7U CN209170388U (en) | 2018-12-18 | 2018-12-18 | Room temperature for radio integration test module calibrates circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209170388U true CN209170388U (en) | 2019-07-26 |
Family
ID=67344352
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822134297.7U Active CN209170388U (en) | 2018-12-18 | 2018-12-18 | Room temperature for radio integration test module calibrates circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209170388U (en) |
-
2018
- 2018-12-18 CN CN201822134297.7U patent/CN209170388U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103999358B (en) | With the insensitive RF power-sensing circuits changed to process, temperature and load impedance | |
| CN104734656B (en) | A kind of radio-frequency signal source with amplitude modulation and automatic level control function | |
| CN106324336B (en) | A kind of power-sensing circuit, power amplifier module and calibration of power circuit | |
| CN101141805A (en) | Radio frequency signal generating and radio frequency power testing apparatus and power detecting method | |
| CN104871564A (en) | Switch techniques for load sensing | |
| CN111398781A (en) | Analog chip test circuit and system | |
| CN104730300B (en) | A kind of measuring device with alc circuit | |
| Sotner et al. | An additional approach to model current followers and amplifiers with electronically controllable parameters from commercially available ICs | |
| CN101839931A (en) | Alternating current signal measurement device, system and method | |
| CN206470289U (en) | A kind of MEMS acceleration transducer signals modulate circuit | |
| CN102769436A (en) | Inexpensive micro-power-consumption miniaturized signal conditioning module applicable to portable apparatuses | |
| Utrobicic et al. | A floating multi-channel picoammeter for micropattern gaseous detector current monitoring | |
| CN209170388U (en) | Room temperature for radio integration test module calibrates circuit | |
| CN108318850A (en) | A kind of more acquisition channel testers of electronic mutual inductor and its method of calibration | |
| CN104124997A (en) | Method for controlling a modulation index of a near field communication device, and associated apparatus | |
| CN102088374A (en) | Stimulating module for testing universal performance of serial interface | |
| CN107196656A (en) | A kind of signal calibration circuit and signal calibration method | |
| CN109391334A (en) | Room temperature for radio integration test module calibrates circuit | |
| CN207662948U (en) | A kind of optional waveform generator | |
| CN202281803U (en) | Pre-calibrated electric energy metering circuit | |
| CN216956130U (en) | Simple and quick signal source generating device | |
| CN207946514U (en) | A kind of more acquisition channel testers of electronic mutual inductor | |
| CN101997620A (en) | Device and method for providing test signals | |
| CN104601186A (en) | Direct-current offset calibration method and device | |
| CN208569026U (en) | A kind of radio-frequency transmissions source system of amplitude-controllable |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |