CN206235659U - A kind of peak-detector circuit for radio frequency power meter - Google Patents
A kind of peak-detector circuit for radio frequency power meter Download PDFInfo
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- CN206235659U CN206235659U CN201621142704.3U CN201621142704U CN206235659U CN 206235659 U CN206235659 U CN 206235659U CN 201621142704 U CN201621142704 U CN 201621142704U CN 206235659 U CN206235659 U CN 206235659U
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- peak
- radio frequency
- frequency power
- detector circuit
- amplifier
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Abstract
The utility model discloses a kind of peak-detector circuit for radio frequency power meter, including the first amplifier, filter resistance, filter capacitor, the second amplifier, video bandwidth selecting switch, voltage comparator, emitter follower, first amplifier once connects the filter resistance, the filter capacitor, the video bandwidth selecting switch, second amplifier connects the video bandwidth selecting switch, and the video bandwidth selecting switch, the voltage comparator, the emitter follower are sequentially connected.Peak-detector circuit for radio frequency power meter of the present utility model, using elements such as amplifier, video bandwidth selecting switch, voltage comparator, emitter followers so as to peak value measurement it is more accurate.
Description
Technical field
The utility model is related to radio frequency power meter field, more particularly to a kind of peak detection electricity for radio frequency power meter
Road.
Background technology
Power reflection meter is commonly used to measure radio frequency（RF）Or microwave frequency（MW）The power of signal.Typical power reflection
Meter uses power detector or transducer, so that RF or MW power is converted into the electric parameter that can easily measure.Power reflection meter
Also there is application in RF the and MW systems of many types.
And peak-detector circuit is used as the crucial component of power reflection meter, its performance largely influences follow-up data
The accuracy for the treatment of, existing peak-detector circuit processing mode is single, it is impossible to accomplish required accuracy well.
Utility model content
The utility model is the above-mentioned deficiency for overcoming prior art, there is provided a kind of use that can improve signal transacting precision
In the peak-detector circuit of radio-frequency power reflectometer.
In order to realize above-mentioned utility model purpose, the technical solution adopted in the utility model is：
A kind of peak-detector circuit for radio frequency power meter, including the first amplifier, filter resistance, filter capacitor,
Two amplifiers, video bandwidth selecting switch, voltage comparator, emitter follower, first amplifier once connect the filter
Ripple resistance, the filter capacitor, the video bandwidth selecting switch, second amplifier connect the video bandwidth selection and open
Close, the video bandwidth selecting switch, the voltage comparator, the emitter follower are sequentially connected.
Further, first amplifier is AD8011 amplifiers.
Further, second amplifier is AD745 amplifiers.
Further, the video bandwidth selecting switch includes that 4K bandwidth GSS Gear Select Switch, 200K bandwidth gear are selected
One or more in switch, filled band GSS Gear Select Switch wide.
Further, the voltage comparator is LT1011 comparators.
Compared with prior art, the beneficial effects of the utility model
Peak-detector circuit for radio frequency power meter of the present utility model, using amplifier, video bandwidth selecting switch,
The elements such as voltage comparator, emitter follower so as to peak value measurement it is more accurate.
Brief description of the drawings
It is the peak-detector circuit module frame chart for radio frequency power meter of the present utility model shown in Fig. 1.
It is the peak-detector circuit figure for radio frequency power meter in one specific implementation of the utility model shown in Fig. 2.
Specific embodiment
The utility model is described in further detail with reference to specific embodiment.But this should not be interpreted as this
The scope of the above-mentioned theme of utility model is only limitted to following embodiment, and all technologies realized based on the utility model content are belonged to
In scope of the present utility model.
Embodiment 1：
It is the peak-detector circuit module frame chart for radio frequency power meter of the present utility model shown in Fig. 1, including first puts
Big device, filter resistance, filter capacitor, the second amplifier, video bandwidth selecting switch, voltage comparator, emitter follower, it is described
First amplifier once connects the filter resistance, the filter capacitor, the video bandwidth selecting switch, and described second amplifies
Device connects the video bandwidth selecting switch, the video bandwidth selecting switch, the voltage comparator, the emitter follower
It is sequentially connected.
In a detailed embodiment, first amplifier is AD8011 amplifiers.
In a detailed embodiment, second amplifier is AD745 amplifiers.
In a detailed embodiment, the video bandwidth selecting switch includes 4K bandwidth GSS Gear Select Switch, 200K
One or more in bandwidth GSS Gear Select Switch, filled band GSS Gear Select Switch wide.
In a detailed embodiment, the voltage comparator is LT1011 comparators.
Specifically, being the peak detection electricity for radio frequency power meter in one specific implementation of the utility model shown in Fig. 2
Lu Tu, the signal of peak-detector circuit has passed through the amplification of AD8011 and AD745 two-way, and AD8011 is that a current feedback operational is put
Big device, broadband is higher, and the signal exported to it carries out high-pass filtering, the carrier signal higher to obtain modulating frequency；Meanwhile, it is right
LPF is carried out by the signal of AD745, the carrier signal relatively low to obtain modulating frequency；Then two paths of signals is merged
Afterwards, by RC filter circuits, set using with 4k, 200k and FULL third gear video bandwidth, by selecting different videos
Bandwidth, makes the peak value measurement of different modulating pattern more accurate；Again by after peak holding, signal being sent into ADC and being converted to number
Word signal；Finally it is sent in data processing circuit by CPLD, obtains peak power measurement result.
Specific embodiment of the present utility model has been described in detail above in conjunction with accompanying drawing, but the utility model is not
It is limited to above-mentioned implementation method, in the case of the spirit and scope for not departing from claims hereof, those skilled in the art
Member can be so that various modification can be adapted or remodeling.
Claims (5)
1. a kind of peak-detector circuit for radio frequency power meter, it is characterised in that including the first amplifier, filter resistance, filter
Ripple electric capacity, the second amplifier, video bandwidth selecting switch, voltage comparator, emitter follower, first amplifier once connect
The filter resistance, the filter capacitor, the video bandwidth selecting switch are connect, second amplifier connects the video tape
Selecting switch wide, the video bandwidth selecting switch, the voltage comparator, the emitter follower are sequentially connected.
2. the peak-detector circuit for radio frequency power meter according to claim 1, it is characterised in that described first amplifies
Device is AD8011 amplifiers.
3. the peak-detector circuit for radio frequency power meter according to claim 1, it is characterised in that described second amplifies
Device is AD745 amplifiers.
4. the peak-detector circuit for radio frequency power meter according to claim 1, it is characterised in that the video bandwidth
Selecting switch includes in 4K bandwidth GSS Gear Select Switch, 200K bandwidth GSS Gear Select Switch, filled band GSS Gear Select Switch wide
Plant or various.
5. the peak-detector circuit for radio frequency power meter according to claim 1, it is characterised in that the voltage ratio compared with
Device is LT1011 comparators.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621142704.3U CN206235659U (en) | 2016-10-20 | 2016-10-20 | A kind of peak-detector circuit for radio frequency power meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621142704.3U CN206235659U (en) | 2016-10-20 | 2016-10-20 | A kind of peak-detector circuit for radio frequency power meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206235659U true CN206235659U (en) | 2017-06-09 |
Family
ID=58982492
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621142704.3U Active CN206235659U (en) | 2016-10-20 | 2016-10-20 | A kind of peak-detector circuit for radio frequency power meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206235659U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106569018A (en) * | 2016-10-20 | 2017-04-19 | 成都前锋电子仪器有限责任公司 | Peak value demodulation circuit for radio frequency power meter |
-
2016
- 2016-10-20 CN CN201621142704.3U patent/CN206235659U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106569018A (en) * | 2016-10-20 | 2017-04-19 | 成都前锋电子仪器有限责任公司 | Peak value demodulation circuit for radio frequency power meter |
| CN106569018B (en) * | 2016-10-20 | 2023-03-21 | 成都前锋电子仪器有限责任公司 | Peak detection circuit for radio frequency power meter |
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