CN207475514U - A kind of Frequency and Amplitude calibrates circuit - Google Patents
A kind of Frequency and Amplitude calibrates circuit Download PDFInfo
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- CN207475514U CN207475514U CN201721706498.9U CN201721706498U CN207475514U CN 207475514 U CN207475514 U CN 207475514U CN 201721706498 U CN201721706498 U CN 201721706498U CN 207475514 U CN207475514 U CN 207475514U
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- analog converter
- placing device
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Abstract
The utility model is related to electronic measuring instrument field, more particularly to a kind of Frequency and Amplitude calibration circuit.Including the first low-pass filter, the input terminal of first low-pass filter receives input signal, and output terminal is connect with the input terminal of the first digital step attenuator；The output terminal of first digital step attenuator is connect with the input terminal of the second low-pass filter；The output terminal of second low-pass filter is connect with the input terminal of the second digital step attenuator；The output terminal output echo signal of second digital step attenuator；The LE ports of first digital step attenuator are also connect by the first filter circuit with power supply；The LE ports of second digital step attenuator are also connect by the second filter circuit with power supply；The utility model provides Frequency and Amplitude calibration circuit and realizes scheduled signal processing flow by particular electrical circuit connection relation so that circuit work is more stablized.
Description
Technical field
The utility model is related to electronic measuring instrument field, more particularly to a kind of Frequency and Amplitude calibration circuit.
Background technology
In radiofrequency signal field, electronic gauge is essential test equipment, and the signal source in electronic gauge
The even more core devices of electronic gauge are mainly responsible for generation with specific frequency, the radio signal of amplitude, if letter
If number source is the core devices of electronic gauge, then Frequency and Amplitude calibration circuit is exactly the core of signal source output qualifying signal
Heart signal processing circuit, the characteristic of Frequency and Amplitude calibration circuit directly determine the performance of signal source entirety.
Utility model content
The purpose of this utility model is that the skill of reliable and stable Frequency and Amplitude calibration circuit is needed in face of good signal source
Art demand provides a kind of Frequency and Amplitude for electronic gauge signal source and calibrates circuit.
In order to realize above-mentioned purpose of utility model, the utility model provides following technical scheme：
A kind of Frequency and Amplitude calibrates circuit, including digital analog converter, when the first input end of the digital analog converter receives
Clock signal, the second input terminal receive control instruction signal, third input terminal receiving sheet selected control signal；
First output terminal of the digital analog converter is connect with the first operational amplifier circuit；First operational amplifier circuit includes, the
One transport and placing device, the in-phase input end of first transport and placing device and the first output terminal of digital analog converter connect；Meanwhile first amplifier
The in-phase input end of device is also grounded by first resistor；The inverting input of first transport and placing device is grounded by second resistance, simultaneously
Also it is connect by 3rd resistor with itself output terminal；The output terminal output amplitude control signal of first transport and placing device；
The second output terminal of the digital analog converter is connect with the second operational amplifier circuit；Second operational amplifier circuit includes second
Transport and placing device, the in-phase input end of second transport and placing device are connect with the second output terminal of the digital analog converter；Its inverting input
It is connect with itself output terminal；The output terminal output frequency control signal of second transport and placing device.
Compared with prior art, the beneficial effects of the utility model：The utility model provides a kind of for electronic gauge
The Frequency and Amplitude calibration circuit of signal source, realizes scheduled signal processing flow so that this reality by particular electrical circuit connection relation
More stablized with the Frequency and Amplitude calibration circuit work of novel offer, so as to reach the radio frequency letter in the qualified target zone of output
Number purpose.
Description of the drawings：
Fig. 1 is the functional block diagram of the utility model.
Fig. 2 is the utility model circuit connection diagram.
Specific embodiment
Below in conjunction with the accompanying drawings and specific embodiment is described in further detail the utility model.But this should not be understood
Range for the above-mentioned theme of the utility model is only limitted to following embodiment, all technologies realized based on the utility model content
Belong to the scope of the utility model.
Embodiment 1：As shown in Figure 1 and Figure 2, the present embodiment provides a kind of Frequency and Amplitudes to calibrate circuit, including digital-to-analogue conversion
Device, the first input end of the digital analog converter receive clock control signal, and the second input terminal receives control instruction signal, third
Input terminal receiving sheet selected control signal；
First output terminal of the digital analog converter is connect with the first operational amplifier circuit；First operational amplifier circuit includes, the
One transport and placing device, the in-phase input end of first transport and placing device and the first output terminal of digital analog converter connect；Meanwhile first amplifier
The in-phase input end of device is also grounded by first resistor；The inverting input of first transport and placing device is grounded by second resistance, simultaneously
Also it is connect by 3rd resistor with itself output terminal；The output terminal output amplitude control signal of first transport and placing device；
The second output terminal of the digital analog converter is connect with the second operational amplifier circuit；Second operational amplifier circuit includes second
Transport and placing device, the in-phase input end of second transport and placing device are connect with the second output terminal of the digital analog converter；Its inverting input
It is connect with itself output terminal；The output terminal output frequency control signal of second transport and placing device.
Claims (1)
1. a kind of Frequency and Amplitude calibrates circuit, which is characterized in that including digital analog converter, the first input of the digital analog converter
End receives clock control signal, and the second input terminal receives control instruction signal, third input terminal receiving sheet selected control signal；
First output terminal of the digital analog converter is connect with the first operational amplifier circuit；First operational amplifier circuit includes, the first fortune
Device is put, the in-phase input end of first transport and placing device and the first output terminal of digital analog converter connect；Meanwhile first transport and placing device
In-phase input end is also grounded by first resistor；The inverting input of first transport and placing device is grounded by second resistance, while also logical
3rd resistor is crossed to connect with itself output terminal；The output terminal output amplitude control signal of first transport and placing device；
The second output terminal of the digital analog converter is connect with the second operational amplifier circuit；Second operational amplifier circuit includes the second amplifier
Device, the in-phase input end of second transport and placing device are connect with the second output terminal of the digital analog converter；Its inverting input with from
Body output terminal connects；The output terminal output frequency control signal of second transport and placing device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721706498.9U CN207475514U (en) | 2017-12-08 | 2017-12-08 | A kind of Frequency and Amplitude calibrates circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721706498.9U CN207475514U (en) | 2017-12-08 | 2017-12-08 | A kind of Frequency and Amplitude calibrates circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207475514U true CN207475514U (en) | 2018-06-08 |
Family
ID=62257528
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721706498.9U Active CN207475514U (en) | 2017-12-08 | 2017-12-08 | A kind of Frequency and Amplitude calibrates circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207475514U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109391334A (en) * | 2018-12-18 | 2019-02-26 | 成都前锋电子仪器有限责任公司 | Room temperature for radio integration test module calibrates circuit |
-
2017
- 2017-12-08 CN CN201721706498.9U patent/CN207475514U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109391334A (en) * | 2018-12-18 | 2019-02-26 | 成都前锋电子仪器有限责任公司 | Room temperature for radio integration test module calibrates circuit |
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