Tunable anti-interference pulse self-check detection circuit

A detection circuit and pulse technology, applied in the microwave field, can solve the problems of failure of self-detection circuit and limited self-detection signal, and achieve the effect of changing detection sensitivity and clear usage scenarios.

Pending Publication Date: 2022-03-15
SOUTHWEST CHINA RES INST OF ELECTRONICS EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The self-test signal that this kind of detection circuit can detect is limited, and the pulse width and amplitude are basically determined. W

Method used

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  • Tunable anti-interference pulse self-check detection circuit
  • Tunable anti-interference pulse self-check detection circuit
  • Tunable anti-interference pulse self-check detection circuit

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Embodiment Construction

[0021] All features disclosed in all embodiments in this specification, or steps in all implicitly disclosed methods or processes, except for mutually exclusive features and / or steps, can be combined and / or extended and replaced in any way.

[0022] like Figure 1 to Figure 4 As shown, a tunable anti-interference pulse self-detection detection circuit includes a coupling circuit, a detection diode, a filter capacitor, a load resistor, a DC blocking capacitor, a grounding resistor and an op-amp comparator; the coupling circuit is used to send out The self-test pulse signal is extracted; the detection diode, filter capacitor and load resistor constitute a charging and discharging circuit for converting the radio frequency signal into a voltage analog signal; the DC blocking capacitor, grounding resistor and operational amplifier constitute a filter circuit for Filter out the DC level formed by the continuous wave interference signal at the front end of the DC blocking capacitor,...

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Abstract

The invention discloses a tunable anti-interference pulse self-check detection circuit which comprises a coupling circuit, a detector diode, a filter capacitor, a load resistor, a blocking capacitor, a grounding resistor and an operational amplifier comparator. The coupling circuit is used for extracting the sent self-checking pulse signal; the detector diode, the filter capacitor and the load resistor form a charging and discharging loop used for converting the radio frequency signal into a voltage analog signal; the blocking capacitor, the grounding resistor and the operational amplifier form a filter circuit which is used for filtering a direct current level formed by a continuous wave interference signal at the front end of the blocking capacitor and only detecting and amplifying a coupled input pulse radio frequency signal, and the pulse width and amplitude of the pulse signal change along with the adjustable resistor; according to the invention, self-checking pulse signals with different pulse widths and different amplitudes can be detected, so that external clutter interference, other interference and the like can be resisted.

Description

technical field [0001] The invention relates to the field of microwave technology, and more specifically, to a tuneable anti-interference pulse self-detection and wave detection circuit. Background technique [0002] The self-inspection detection circuit plays an important role in the electronic countermeasure system. It can monitor whether the transmitted interference signal is valid, so as to judge whether the transmission link is working normally. When the signal is transmitted, a certain amount of signal energy is coupled from the transmitting output terminal into the self-inspection circuit. The traditional detection circuit performs continuous wave detection, and all the signals entering the self-inspection circuit are detected and output. When a wave signal is used (usually a continuous wave signal), the system cannot effectively judge the correctness of the self-test output level, and the self-test function fails. Therefore, a self-test circuit capable of anti-jammi...

Claims

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Application Information

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IPC IPC(8): H03K5/1252H03K7/08
CPCH03K5/1252H03K7/08
Inventor 刘晓亚王超杰余雷吴昌勇郭婧
Owner SOUTHWEST CHINA RES INST OF ELECTRONICS EQUIP
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