CN205945663U - High -power clipper -limiter of microwave continuous wave - Google Patents

Abstract

The utility model discloses a high -power clipper -limiter of microwave continuous wave, including microwave power coupler, microwave power detector, detection signal amplifier, threshold compataror, PIN switch driver, the high -power PIN switch of microwave and PIN impulse slicer, microwave power coupler output is connected to respectively high -power PIN switch input end of microwave and microwave power detector input, the microwave power detector loops through detection signal amplifier sluggish threshold compataror PIN switch driver the high -power PIN switch of microwave is connected to PIN impulse slicer input, reduce the designing requirement of the high -power PIN pulse amplitude limiting of continuous wave, promoted the power carrying capacity of microwave receiving system to microwave continuous wave or the high -power signal of wide pulse width, solved traditional high -power clipper -limiter of microwave continuous wave and born the lower problem of power, increased microwave receiving system reliability.

Description

A kind of microwave continuous ripple high power amplitude limiter

Technical field

The invention belongs to microwave continuous ripple high-power limiting technology field, it is specifically related to a kind of microwave continuous ripple high-power Amplitude limiter.

Background technology

In the systems such as radio communication, radar, electronic countermeasure, radio signal launched by transmitter, and receiver receives wireless The signal of telecommunication.Usually, communication, detection range are remote, and transmitter transmission power is the bigger the better；And receiver front end then require sensitive The higher the better for degree, the power very little that therefore receiver front end can bear, and receives to prevent possible high-power signal from entering Receiver is burnt in machine front end, typically needs to design amplitude limiter protection small-signal receiver circuit in front of the receiver in terminal circuit, special It is not the power leakage of transmitter in radar, electronic counter-measures receiver, the signaling reflex of large area reverberation, other side's radar Situations such as closely high-power irradiation of transmitter etc., all high-power signal can be caused to input, therefore by terminal circuit in front of the receiver Microwave limiter is the protection requisite device of receiver front end, and conventional microwave limiter is set using PIN limiter diode Meter.

Microwave high power signal has impulse wave and two kinds of continuous wave, and microwave high power signal breaks to PIN impulse slicer The mainly high-power heat accumulated with heating effect that punctures of bad effect is burnt, and lasting HIGH-POWERED MICROWAVES signal is to cause PIN to limit The main cause of width pipe heating burnout, the therefore highpowerpulse ripple and continuous wave requirement to amplitude limiter is different, on an equal basis Under power magnitude, the requirement to amplitude limiter for the continuous wave is harsh.The requirement to amplitude limiter for the highpowerpulse ripple needs to see pulse The parameters such as the pulse width of ripple, dutycycle and pulse repetition frequency, the wherein impact to amplitude limiter for the pulse width of impulse wave are Greatly, when the pulse width of impulse wave is sufficiently narrow, in the case that dutycycle is sufficiently small, heating on amplitude limiter for the pulsed microwave energy Effect can not be accumulated, then amplitude limiter bears the powerful ability of microwave pulse and just can improve, when the pulse width of impulse wave During sufficiently wide formation wide pulse width impulse wave, in fact just can approximately regard that continuous wave acts on as, traditional microwave continuous wave is high-power It is low that amplitude limiter bears power, can there is a problem of that high-power signal enters receiver front end and burns receiver.

It is, therefore, desirable to provide a kind of new microwave continuous ripple high power amplitude limiter.

Content of the invention

For solving the above problems, the invention discloses a kind of new microwave continuous ripple high power amplitude limiter, it is right to reduce The continuous wave power capacity design of high-power PIN limiter tube requires, and improves microwave receiving system to microwave continuous ripple or wide pulse width The power bearing ability of high-power signal, solves the problems, such as that traditional microwave continuous wave high power amplitude limiter bears power relatively low, Increased microwave receiving system reliability.

In order to reach object above, the present invention provides following technical scheme：Including microwave power bonder, microwave power inspection Survey device, detection signal amplifier, threshold compataror, PIN switch driver, Microwave High-Power PIN Switch and PIN pulse amplitude limit Device, described microwave power coupler output is respectively connecting to described Microwave High-Power PIN Switch input and microwave power inspection Survey device input, described microwave power detector outfan connects to described detection signal amplifier in, described detection letter Number amplifier out connects to described threshold compataror input, and described threshold compataror outfan connects to be opened to described PIN Close driver input end, described PIN switch driver outputs connect to described Microwave High-Power PIN Switch input, described Microwave High-Power PIN Switch outfan connects to described PIN impulse slicer input.

Further, described PIN impulse slicer includes bonder CR, capacitance C, PIN switching tube PIN1, PIN limit Width pipe PIN2 and microstrip line, described bonder connects described PIN switching tube PIN1, and described capacitance C is connected by microstrip line To between described PIN switching tube PIN1 and PIN limiter tube PIN2.

Further, described PIN switching tube PIN1 adopts MA4P504 switching tube, and described PIN limiter tube PIN2 adopts CLA4603 limiter tube.

Further, described threshold compataror adopts hysteretic threshold comparator.

Further, described Microwave High-Power PIN Switch adopts broadband single-pole single-throw(SPST PIN to switch.

The present invention compared with the prior art, this have the advantage that：By receiving in radio communication, radar, electronic countermeasure etc. Increase the detection to input HIGH-POWERED MICROWAVES signal in system and compare, system can automatically control opening of high-power PIN switch Lead to and off state, make the microwave continuous ripple of input or wide pulse width high-power signal be changed into the high-power leakage signal of burst pulse, Reduce the continuous wave power capacity design to high-power PIN limiter tube to require, improve microwave receiving system to microwave continuous ripple Or the power bearing ability of wide pulse width high-power signal, solving traditional microwave continuous wave high power amplitude limiter, to bear power relatively low Problem, increased microwave receiving system reliability.

Brief description

Fig. 1 is microwave continuous ripple high power amplitude limiter principle schematic proposed by the present invention.

Fig. 2 is PIN impulse slicer microwave circuit schematic diagram in microwave continuous ripple high power amplitude limiter proposed by the present invention.

Fig. 3 is microwave high power input A point signal amplitude oscillogram.

Fig. 4 is to export after PIN on-off control high-power in this patent method to PIN impulse slicer C point signal width Degree oscillogram.

Specific embodiment

Below in conjunction with the accompanying drawings the present invention is further described.

With reference to Fig. 1, a kind of microwave continuous ripple high power amplitude limiter, including microwave power bonder, microwave power detector, Detection signal amplifier, threshold compataror, PIN switch driver, Microwave High-Power PIN Switch and PIN impulse slicer, above-mentioned Threshold compataror adopts hysteretic threshold comparator, wherein said microwave power coupler input input microwave continuous ripple or wide arteries and veins Wide pulse signal, described microwave power coupler output is respectively connecting to described Microwave High-Power PIN Switch input and micro- Wave power detector input, thus microwave continuous ripple or wide pulse width pulse signal enter in Microwave High-Power PIN Switch and In microwave power detector, when microwave continuous ripple or wide pulse width pulse signal enter in microwave power detector, described micro- Wave power detector detects the power of this microwave continuous ripple or wide pulse width pulse, and described microwave power detector outfan connects To described detection signal amplifier in, described detection signal amplifier out connects defeated to described hysteretic threshold comparator Enter end, microwave power detector sends the power signal detecting amplitude leyel to detection signal amplifier, and detection signal is put Power signal amplitude after big device will amplify after being amplified the power signal amplitude leyel that microwave power detector exports is electric Flat be sent in hysteretic threshold comparator, hysteretic threshold comparator is by the power signal amplitude leyel after amplifying and the power setting Threshold level is compared, when inputting the corresponding power threshold level that microwave signal power exceedes setting, output control signal To subsequent conditioning circuit, described hysteretic threshold comparator output terminal connects to described PIN switch driver input, described PIN switch Driver output end connects to described Microwave High-Power PIN Switch input, and described Microwave High-Power PIN Switch outfan connects To described PIN impulse slicer input, when inputting the corresponding power threshold level that microwave signal power exceedes setting, sluggish Threshold compataror output control signal to turn off Microwave High-Power PIN Switch to PIN switch driver；Described microwave power coupling Device input input microwave continuous ripple or wide pulse width pulse signal, described microwave power coupler output is respectively connecting to described Microwave High-Power PIN Switch input and microwave power detector input, so microwave continuous ripple or wide pulse width pulse signal Enter in Microwave High-Power PIN Switch and in microwave power detector, be so turned off it in Microwave High-Power PIN Switch Before, the HIGH-POWERED MICROWAVES signal of only very short time can be leaked on the Microwave High-Power PIN impulse slicer of rear class, when not having During HIGH-POWERED MICROWAVES signal, Microwave High-Power PIN Switch is to be constantly in opening state, is in the shape to microwave signal filter with low insertion loss State, does not affect the reception of microwave signal；

Above-mentioned threshold compataror adopts hysteretic threshold comparator, is in order to avoid working as input microwave signal power amplitude just Be in threshold compataror decision threshold level when, threshold compataror output can produce vibration, makes at Microwave High-Power PIN Switch In the labile state frequently turning on and off, threshold compataror controls the setting of threshold level, will be limited according to Microwave PIN pulse Width device to determine to the power bearing ability of continuous wave, and above-mentioned Microwave High-Power PIN Switch is opened using broadband single-pole single-throw(SPST PIN Close.

Operation principle：

When microwave continuous ripple or wide pulse width pulse high-power signal are input to microwave power coupler input, microwave work( Rate bonder is coupled out sub-fraction microwave power, is detected the amplitude of input microwave signal power by microwave power detector, Through detection signal amplifier, the amplitude of this microwave signal power is amplified afterwards because microwave power bonder to be only coupled out one little Part microwave power, the microwave signal power amplitude leyel of detection output is smaller, is directly inputted in threshold compataror and carries out Comparative effectiveness unintelligible it is therefore desirable to the detection signal amplitude of this microwave signal power be amplified through detection signal amplifier, Detection signal after amplification is compared by hysteretic threshold comparator and threshold level, sets when input microwave signal power exceedes During fixed corresponding power threshold level, threshold compataror output control signal to turn off microwave high power to PIN switch driver PIN switchs, and so before high-power PIN switch OFF, the HIGH-POWERED MICROWAVES signal of only very short time is leaked to rear class On Microwave PIN impulse slicer, when not having HIGH-POWERED MICROWAVES signal, microwave high power signal PIN switch is always maintained at open-minded State, is in the state to microwave signal filter with low insertion loss, does not affect the reception of microwave signal, so passes through increase input high-power micro- The detection of ripple signal and comparing, system can automatically control the microwave turning on and off state, making input of high-power PIN switch Continuous wave or wide pulse width high-power signal are changed into the high-power leakage signal of burst pulse；

In the microwave continuous ripple high power amplitude limiter that this patent proposes, PIN impulse slicer microwave circuit is as shown in Fig. 2 institute State PIN impulse slicer microwave circuit and include bonder CR, capacitance C, PIN switching tube PIN1, PIN limiter tube PIN2 and micro- Band wire, described bonder connects described PIN switching tube PIN1, and described capacitance C is connected to described PIN switch by microstrip line Between pipe PIN1 and PIN limiter tube PIN2；

With reference to Fig. 3 and Fig. 4, Fig. 3 and Fig. 4 is to realize microwave using the microwave continuous ripple high power amplitude limiter that this patent proposes The explanation that continuous wave or wide pulse width high-power signal amplitude limit principle are carried out：

With reference to Fig. 3 it is assumed that being the microwave signal amplitude waveform that microwave receiver A point receives, in figure dotted line refers to sluggishness Two power threshold level that threshold compataror sets correspond to signal amplitude comparison threshold A1 and A2, and T1, T2, T3 are three respectively In the moment that microwave signal occurs, signal 1 is microwave high power continuous wave signal, and signal 2 is Microwave Low Power continuous signal, signal 3 is wide pulse width microwave high power signal；Fig. 4 is after Microwave High-Power PIN Switch controls to high-power input signal amplitude, The microwave signal amplitude waveform of output C point, the amplitude due to signal 1 and signal 3 is more than on-off control comparison threshold, believes when receiving Number 1 and during signal 3, threshold compataror output control signal turns off microwave signal high-power PIN switch to PIN switch driver, Because from the coupling of microwave high power signal, microwave power detector detects, detection signal amplifier amplifies, defeated to threshold compataror Go out control signal to turn off to PIN switch driver, this is to need a control time, in the very short control time of this section, HIGH-POWERED MICROWAVES signal can be leaked to rear class, and the signal 1 therefore seen in T1 the and T3 moment in the diagram and the leakage of signal 3 are narrow Impulse waveform, typically in the lus order of magnitude, this reveals more narrow better, the width of microwave signal 2 of pulse width for narrow pulse width t, t Degree is not above the comparison threshold level of threshold compataror, and therefore Microwave High-Power PIN Switch will not be turned off by control；

Microwave PIN impulse slicer adopts PIN limiter tube to design, and microwave PIN swtich adopts PIN switching tube to design, corresponding For microwave receiving system, receiving sensitivity is key index, therefore except bearing power index, PIN impulse slicer and opening Closing circuit design microwave electrical property of interest is insertion loss, impact PIN impulse slicer and switch insertion loss index Electrical quantity is junction capacity Cj, and therefore table 1 have chosen junction capacity Cj identical limiter tube and switching tube in related circuit application, limit , switching tube is with MA4P system of M/A COM Inc. taking the CLA4607 in SKYWORKS company PIN limiter tube CLA46 series as a example for width pipe It is analyzed as a example MA4P504 in row and test, PIN limiter tube and switch in the case of table 1 display junction capacity Cj identical Pipe parameter compares：

Table 1

PIN limiter tube and switch junction capacitance are in the same size in related circuit application as can be seen from Table 1, but its He differs greatly at electrical quantity, and although producer is not given, power is born in the resistance to pulse of switching tube MA4P504 and continuous wave bears power Referential data, but it is clear that switching tube MA4P504 is than limit from the point of view of reversely pressure, series resistance Rs, thermal resistance index contrast It is much bigger that the continuous wave of width pipe CLA4607 bears power capability；

Table 2 gives homologous series PIN limiter tube parameter and compares：

Table 2

Two PIN limiter tube in CLA46 series in table 2, in general traditional slicer, input microwave high power signal is by level Connection amplitude limiter circuit amplitude limit step by step, therefore cascading the limiter tube of employing, to bear power be also to reduce step by step, sets by traditional slicer Meter, the usual first order adopts CLA4607 limiter tube, and the second level adopts CLA4603 limiter tube, and such microwave continuous ripple bears power More than 6W can be reached；

And in this patent embodiment, as shown in Fig. 2 PIN impulse slicer microwave circuit includes bonder CR, every directly electricity Hold C, PIN switching tube PIN1, PIN limiter tube PIN2 and microstrip line, described bonder connects described PIN switching tube PIN1, described Capacitance C is connected between described PIN switching tube PIN1 and PIN limiter tube PIN2 by microstrip line, the effect of capacitance C It is the effect that the control signal that PIN is switched plays isolation, using the X of this patent microwave continuous ripple high-power amplitude limit method design Band limiter device microwave circuit, the first order adopts the Microwave High-Power PIN Switch that MA4P504 switching tube is realized, in actual tests Microwave continuous ripple bears power and is more than 50W, and the second level adopts CLA4603 limiter tube as microwave pulse amplitude limiter, reference table 2 number According to CLA4603 limiter tube bears power for pulsewidth 1us microwave pulse and is more than 100W, and continuous wave bears power and is more than 2W.Using The microwave power bonder CR degree of coupling is designed as 23dB, under the input of 2W continuous wave, coupling output 10mW, and put using detection signal Big device and threshold compataror, Microwave High-Power PIN Switch turns off corresponding power threshold and is set to 2W, and Microwave High-Power PIN is opened The turn-off time closed is 800ns, adds that time delay is compared in detection, microwave high power signal is revealed pulse width t and is less than 1us, in Fig. 4 In as can be seen that amplitude or 50W, the continuous wave signal of leakage is 2W to the maximum, and all in the second level, limiter tube CLA4603 bears work( In the range of rate, contrast traditional microwave continuous wave amplitude limiter, using the bearing of microwave continuous ripple amplitude limiter of this patent method design Power capability significantly improves；Additionally, PIN impulse slicer microwave circuit is not limited in above-described embodiment only include a PIN Switching tube and a PIN limiter tube, are also designed to including multiple PIN switching tubes and multiple PIN limiter tube, multiple when including When PIN switching tube and multiple PIN limiter tube, bonder and capacitance pass through microstrip line and multiple PIN switching tubes, multiple PIN Limiter tube connects, and final microwave continuous ripple amplitude limiter bears power capability and is further enhanced.

The above be only the preferred embodiment of the present invention it should be pointed out that：Those skilled in the art are come Say, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications also should be regarded as Protection scope of the present invention.

Claims (5)

1. a kind of microwave continuous ripple high power amplitude limiter it is characterised in that：Including microwave power bonder, microwave power detection Device, detection signal amplifier, threshold compataror, PIN switch driver, Microwave High-Power PIN Switch and PIN impulse slicer, Described microwave power coupler output is respectively connecting to described Microwave High-Power PIN Switch input and microwave power detector Input, described microwave power detector outfan connects to described detection signal amplifier in, and described detection signal is put Big device outfan connects to described threshold compataror input, and described threshold compataror outfan connects to described PIN switch drive Dynamic device input, described PIN switch driver outputs connect to described Microwave High-Power PIN Switch input, described microwave High-power PIN output switching terminal connects to described PIN impulse slicer input.

2. microwave continuous ripple high power amplitude limiter according to claim 1 it is characterised in that：Described PIN impulse slicer Including bonder CR, capacitance C, PIN switching tube PIN1, PIN limiter tube PIN2 and microstrip line, described bonder connects described PIN switching tube PIN1, described capacitance C by microstrip line connect to described PIN switching tube PIN1 and PIN limiter tube PIN2 it Between.

3. microwave continuous ripple high power amplitude limiter according to claim 2 it is characterised in that：Described PIN switching tube PIN1 Using MA4P504 switching tube, described PIN limiter tube PIN2 adopts CLA4603 limiter tube.

4. microwave continuous ripple high power amplitude limiter according to claim 1 it is characterised in that：Described threshold compataror adopts Hysteretic threshold comparator.

5. microwave continuous ripple high power amplitude limiter according to claim 1 it is characterised in that：Described Microwave High-Power PIN Switch is using broadband single-pole single-throw(SPST PIN switch.