Micro-nano electronic machinery system indirect heating microwave radiometer based on cantilever beam

Abstract

A micro-nano electronic machinery system indirect heating microwave radiometer based on a cantilever beam comprises a microwave antenna, a low-noise amplifier, a six-port cantilever beam coupler, a microwave frequency and power detection module, an amplifier, a single chip microcomputer and a liquid crystal display. Signals received by the microwave antenna are amplified to enter the six-port cantilever beam coupler, the coupled signals are used for power and frequency detection, the signals are calculated through the single chip microcomputer, and the radiation signal frequency and power aredisplayed on the liquid crystal display. The micro-nano electronic machinery system can obtain radiation frequency and radiation intensity of radiation signals at the same time, replaces a traditionaldiode with an indirect heating vertical nano microwave power sensor as a microwave power sensor and is high in linearity, small in temperature excursion and high in power upper limit, the heat conductivity of polycrystalline silicon nanowires is far lower than traditional bulk materials, and therefore, the thermoelectric conversion efficiency is improved, the output voltage is greatly improved, and the sensitivity and the precision of the radiometer are improved.

Description

technical field [0001] The invention proposes a micro-nano electro-mechanical system indirect heating microwave radiation instrument based on a cantilever beam, which belongs to the technical field of micro-electro-mechanical systems. Background technique [0002] Wireless communication devices, such as mobile phones, computer routers, etc., are gradually pervading our lives. While bringing us convenience, they also bring some problems to our health. For example, the electromagnetic wave radiation caused by wireless communication causes cancer, the surrounding radiation is relatively large when the microwave oven is working, and so on. The microwave radiometer can measure the intensity of microwaves radiated strongly at a certain frequency, and can indicate the intensity of microwave radiation in the environment to ensure the safety of the living environment. Traditional microwave radiometers use diodes as microwave power detection devices. The disadvantages are serious tem...

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Problems solved by technology

Traditional microwave radiometers use diodes as microwave power detection devices. The disadvantages are serious temperature drift, low upper limit of power detection and nonlinear characteristics, and cannot measure the frequency parameters of radiation power signals. Under harsh environmental conditions, its accuracy To be further improved

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