RF interferometric wearable wrist pulse detection system
IET Microwaves, Antennas & Propagation(2018)
摘要
This study presents a novel wrist pulse detection system based on the variation of transmission coefficient (S21) of coupled resonators. Radiated signal from one resonator is modulated by the wrist pulse and transmitted to the other resonator. To improve sensitivity of the system, a radio-frequency (RF) interferometer concept is employed and its validity is mathematically analysed. Full-wave elect...
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关键词
radiowave interferometers,signal detection,UHF resonators
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