A time-domain and frequency-domain integrated microwave front-end high-power microwave protection device

Abstract

The invention discloses a high-power microwave protection device with time-domain and frequency-domain integrated microwave front end, which belongs to the field of microwave technology. The device includes a rectangular waveguide housing. N pairs of inductive diaphragms are arranged in the rectangular waveguide housing along the axial direction. A pair of capacitive diaphragms are arranged between two adjacent pairs of inductive diaphragms. The 3 pairs of capacitive diaphragms are respectively loaded with a pair of conical / conical electrodes at the center of the opposite surfaces. In the frequency domain, the present invention realizes the wide stopband characteristic of the protective structure by loading a capacitive diaphragm; in the time domain, the microwave plasma layer generated by loading a conical / conical electrode strong field breakdown reflects most of the HPM energy, realizing Microwave receiver broadband in-band power protection function; under the HPM electromagnetic environment, the limiting isolation of the protection device is greater than 20dB, and the response time is less than 5ns.

Description

technical field [0001] The invention belongs to the field of microwave technology, and relates to a high-power microwave power limiting protection device with time domain and frequency domain integrated microwave front end. Background technique [0002] High-power microwave (HPM) is a kind of strong electromagnetic pulse, which has the characteristics of high frequency, short pulse (tens of nanoseconds) and high power. Its frequency ranges from 1 to 300 GHz and its peak power is higher than 100 MW. In modern military equipment, communication and radar systems are important components of the electronic system and the core part of the entire system. The most important part of communication and radar systems is the microwave receiver part of the wireless communication module. A typical front-end configuration of a microwave receiver consists of a receiving antenna, filter, limiter, low-noise amplifier, and mixer. Microwave front door attack. The traditional protection technol...

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Problems solved by technology

It is noted that the layout of the filter module and the limiter module in the conventional microwave front-end is a serial topology, and their functions are independent of each other. It is impossible to realize the compatibility protection function of high-power microwave pulse signals in the time domain and frequency domain in one device.

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