A temperature and humidity synchronization detection method based on microwave coupled-resonator

This article proposes a novel temperature and humidity synchronization test method based on the U-shaped microwave resonator technology. U-shaped microwave resonator have been manufactured using the U-shaped microwave probe by studying the high quality factor, which was deponed on the length, distance of gap and radius of tungsten filament. Based on this U-shape microwave probe, the resonance frequency shift was using to detect the temperature and relative humidity with the sensitivity of 38 kHz/°C and 10.3 kHz/%RH, respectively. Meanwhile, the humidity can be detected by the resonance intensity with the signal noise ratio (SNR) of 100. Based on it, the temperature and relative humidity can be synchronization detected using the U-shaped microwave resonator. It proves a high sensitive, low-cost, ease of fabrication technologies.