Microwave detector, manufacturing method thereof, and stray electromagnetic wave radiation suppression method

Abstract

The present invention discloses a microwave detector, a manufacturing method thereof, and a stray electromagnetic wave radiation suppression method. The microwave detector includes a reference ground,a radiation source, a drive circuit and at least one set of suppression fence columns. The drive circuit is electrically connected to a feed point of the radiation source. The radiation source, the reference ground, and the drive circuit are sequentially disposed along a thickness direction of the microwave detector. The radiation source and the reference ground are spaced apart from each other to form a radiation gap between the radiation source and the reference ground, and a separation distance between the reference ground and the drive circuit is greater than or equal to 1 / 128 lambda, lambda is a wavelength of a radiation wave of the microwave detector, one set of suppression fence columns surrounds the drive circuit in a manner in which suppression fence columns are spaced apart fromeach other at a side of the drive circuit.

Description

technical field [0001] The invention relates to the field of antennas, in particular to a microwave detector, a manufacturing method thereof and a method for suppressing stray electromagnetic radiation. Background technique [0002] With the development and popularization of the Internet of Things, such as the application of the Internet of Things in the field of artificial intelligence and smart home, radio technology, including microwave detection technology based on the principle of Doppler effect, is an important link between people and things, and things and things. Hubs are being used more and more widely. ISM (Industrial Scientific Medical) Band is defined by ITU-R (ITURadiocommunication Sector, International Telecommunication Union Radiocommunication Bureau) for use by institutions such as industry, science and medicine without authorization. In these frequency bands opened by ITU-R, the frequency bands used for microwave detection mainly include 2.4Ghz, 5.8Ghz, 10.5...

AI Technical Summary

Problems solved by technology

[0005] That is to say, due to the existence of stray electromagnetic radiation, current microwave detectors have increasingly serious problems of one-way interference or mutual interference with radio equipment in different frequency bands, including microwave detectors in different frequency bands, and it is difficult to Satisfy the EU RED certification and the US FCC certification for the limit requirements of harmonics in stray electromagnetic radiation

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