CN209375593U - A kind of RF high power limiter - Google Patents
A kind of RF high power limiter Download PDFInfo
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- CN209375593U CN209375593U CN201920192935.2U CN201920192935U CN209375593U CN 209375593 U CN209375593 U CN 209375593U CN 201920192935 U CN201920192935 U CN 201920192935U CN 209375593 U CN209375593 U CN 209375593U
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Abstract
The utility model discloses a kind of RF high power limiters comprising for receiving the rf inputs mouth of high-power signal and being connected with rf inputs mouth, the clipping unit for carrying out clipping to received high-power signal；Clipping unit includes amplitude limiter circuit and connect with amplitude limiter circuit output end, the sample circuit for being sampled to the signal after clipping；The output end of sample circuit is connected with biasing circuit, and biasing circuit is connected with one for conveying the bias control circuit of control voltage to biasing circuit；The RF high power limiter structure novel, consumptive material are few, consume energy low, can simply and effectively adjust output violent change level with design by the rational deployment to each component.
Description
Technical field
The utility model relates to radio frequency arts, and in particular to a kind of RF high power limiter.
Background technique
With the rise of Internet of Things, RFID (radio frequency identification) technology is had been widely used；RFID technique is benefit
The reading of non-contact remote information may be implemented in a kind of Modern wireless communication technology communicated with spatial electromagnetic wave.In radio frequency
In identification circuit design, clipping unit is one of its nucleus module, and voltage of the carrier signal after over commutation generally has 10V even
It is higher, and so high voltage in circuit capacitor and transistor all constitute certain threat, can be direct when serious
Lead to circuit malfunction, amplitude limiter circuit is exactly to carry out clipping to the voltage after this rectification, so that the voltage stabilization after rectification is one
Within the scope of a.Currently, carried out in amplitude limiting processing to the received high-power signal of rf inputs mouth, it can not be simply and effectively
Output violent change level is adjusted, and structure is complicated, more using electronic device, energy consumption is high.
Utility model content
The purpose of the utility model is to provide a kind of RF high power limiter, asked with solve that above-mentioned background technique mentions
Topic.
In order to solve the above technical problems, the utility model provides a kind of RF high power limiter comprising for receiving
The rf inputs mouth of high-power signal and it is connected with rf inputs mouth, for carrying out clipping to received high-power signal
Clipping unit；Clipping unit includes amplitude limiter circuit and connect with amplitude limiter circuit output end, for taking to the signal after clipping
The sample circuit of sample；The output end of sample circuit is connected with biasing circuit, and biasing circuit is connected with one for defeated to biasing circuit
Send the bias control circuit of control voltage
Further, bias control circuit is circumscribed with control voltage input port.
Further, clipping unit includes resistance R, inductance L, RF amplifier, capacitor and several diodes；Several two
Pole pipe is in parallel, the minus earth of diode；The noninverting input external voltage of RF amplifier, the reverse input end of RF amplifier with
One end of resistance R connects, and the output end of RF amplifier is connect with one end of inductance L；The sun of the anode of diode V1, diode V2
One end of pole, one end of capacitor C1 and resistance R is connected and connect with RF signal input end；Anode, the diode of diode V3
The anode of V4, the anode of diode V5, the other end of capacitor C1, inductance L the other end be connected with one end of capacitor C2, capacitor C2
The other end connect with RF signal output.
The utility model has the following beneficial effects: the RF high power limiter includes rf inputs mouth, it is big for receiving
Power signal；Clipping unit is connected, for carrying out clipping to received high-power signal with rf inputs mouth.Clipping unit
Specifically include amplitude limiter circuit and sample circuit, sample circuit connect with amplitude limiter circuit output end, for the signal after clipping into
Row sampling, the output end of sample circuit are connected with biasing circuit, and biasing circuit is connected with a bias control circuit, are used for biasing
Circuit conveying control voltage.The RF high power limiter structure novel, consumptive material are few, consume energy low, by the reasonable of each component
Layout and design can simply and effectively adjust output violent change level.
Detailed description of the invention
Fig. 1 shows schematically the module frame chart of RF high power limiter.
Fig. 2 shows schematically the circuit connection diagram of RF high power limiter.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
It clearly and completely describes, it is clear that described embodiment is only a kind of embodiment of the utility model, rather than whole realities
Apply example.Based on the embodiments of the present invention, those of ordinary skill in the art institute without creative efforts
The every other embodiment obtained, belongs to the protection scope of the utility model.
To keep the purposes, technical schemes and advantages of the application clearer, below in conjunction with drawings and the specific embodiments, to this
Application is described in further detail.
In the following description, the reference of " one embodiment ", " embodiment ", " example ", " example " etc. is shown
The embodiment or example so described may include special characteristic, structure, characteristic, property, element or limit, but not each reality
Applying example or example all necessarily includes special characteristic, structure, characteristic, property, element or limit.In addition, reuse phrase " according to
Although it is possible to be to refer to identical embodiment, but be not necessarily referring to identical embodiment for one embodiment of the application ".
For the sake of simplicity, the common technical knowledge that technical field technical staff is known is omitted in the following contents.
As shown in Figure 1, the RF high power limiter includes rf inputs mouth, for receiving high-power signal；Clipping
Unit is connected, for carrying out clipping to received high-power signal with rf inputs mouth.Wherein, clipping unit specifically includes
Amplitude limiter circuit and sample circuit, sample circuit connect, for being sampled to the signal after clipping with amplitude limiter circuit output end, take
The output end of sample circuit is connected with biasing circuit, and biasing circuit is connected with a bias control circuit, for conveying to biasing circuit
Control voltage.
In specific implementation, rf inputs mouth receives high-power signal and the high-power signal received is sent into clipping
Circuit carries out clipping, and carries out signal power sampling to the radiofrequency signal after clipping by sample circuit, and by sampled signal
It is sent into biasing circuit, and control voltage is sent out by bias control circuit and changes biasing circuit output level value, so as to adjust right
Answer output violent change level.The RF high power limiter structure novel, energy consumption are low, pass through the rational deployment and design to each component
Output violent change level can simply and effectively be adjusted.
As shown in Fig. 2, Fig. 2 shows schematically the circuit connection diagram of RF high power limiter；Wherein, clipping
Unit includes resistance R, inductance L, RF amplifier, capacitor and several diodes；Several diodes in parallel, the cathode of diode
Ground connection；The reverse input end of the noninverting input external voltage of RF amplifier, RF amplifier is connect with one end of resistance R, and RF is put
The output end of big device is connect with one end of inductance L.
Wherein the anode of diode V1, the anode of diode V2, one end of capacitor C1 and resistance R one end be connected and with penetrate
The connection of frequency signal input part；The anode of diode V3, the anode of diode V4, the anode of diode V5, capacitor C1 the other end,
The other end of inductance L is connected with one end of capacitor C2, and the other end of capacitor C2 is connect with RF signal output；The clipping unit
Structure is simple, and electronic component consumption is few, consumes energy low.
The preferred embodiment of the utility model are as follows: the bias control circuit of the RF high power limiter is circumscribed with control electricity
Input port is pressed, it in specific implementation, can be by changing load in the External Control Voltage value of bias control circuit, adjustment biasing
Control circuit, so as to adjust corresponding output violent change level.
The foregoing description of the disclosed embodiments is that professional and technical personnel in the field can be realized or using originally practical new
Type.Various modifications to these embodiments will make for those skilled in the art it will be apparent that defined herein
General Principle can be realized in other embodiments in the case where not departing from the spirit or scope of utility model.Therefore, originally
Utility model will not be limited and the embodiments shown herein, and is to fit to and principles disclosed herein and novelty
The property consistent widest scope of feature.
Claims (3)
1. a kind of RF high power limiter, it is characterised in that: including for receiving high-power signal rf inputs mouth and
It is connected with the rf inputs mouth, the clipping unit for carrying out clipping to received high-power signal；The clipping unit
It is connect including amplitude limiter circuit and with the amplitude limiter circuit output end, the sample circuit for being sampled to the signal after clipping；
The output end of the sample circuit is connected with biasing circuit, and the biasing circuit is connected with one for conveying to the biasing circuit
Control the bias control circuit of voltage.
2. RF high power limiter according to claim 1, it is characterised in that: the bias control circuit is circumscribed with control
Voltage input port processed.
3. RF high power limiter according to claim 1, it is characterised in that: the clipping unit includes resistance R, electricity
Feel L, RF amplifier, capacitor and several diodes；Several described diodes in parallel, the minus earth of the diode；Institute
The noninverting input external voltage of RF amplifier is stated, the reverse input end of RF amplifier is connect with one end of resistance R, RF amplifier
Output end connect with one end of inductance L；The anode of diode V1, the anode of diode V2, one end of capacitor C1 and resistance R
One end is connected and connect with RF signal input end；The anode of diode V3, the anode of diode V4, diode V5 anode,
The other end of capacitor C1, the other end of inductance L are connected with one end of capacitor C2, the other end and RF signal output of capacitor C2
Connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920192935.2U CN209375593U (en) | 2019-02-13 | 2019-02-13 | A kind of RF high power limiter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920192935.2U CN209375593U (en) | 2019-02-13 | 2019-02-13 | A kind of RF high power limiter |
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| Publication Number | Publication Date |
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| CN209375593U true CN209375593U (en) | 2019-09-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920192935.2U Active CN209375593U (en) | 2019-02-13 | 2019-02-13 | A kind of RF high power limiter |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114614784A (en) * | 2022-05-11 | 2022-06-10 | 深圳市鼎阳科技股份有限公司 | Ultra-wideband adjustable amplitude limiter |
-
2019
- 2019-02-13 CN CN201920192935.2U patent/CN209375593U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114614784A (en) * | 2022-05-11 | 2022-06-10 | 深圳市鼎阳科技股份有限公司 | Ultra-wideband adjustable amplitude limiter |
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