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The results of numerical investigations of electrodynamic characteristics of multibeam triple-gap resonator are presented. The possibility of achieving the multiplicity equal to two ratios of frequencies the fourth higher mode to the frequency of the main mode is shown. This setting will provide a quasi sawtooth law of variation of the RF voltage on the resonator gaps. When tuning the frequency of...
In this paper, a compact vital signal sensing method using oscillation frequency deviation at 2.4-GHz industrial–scientific–medical band is proposed to detect vital signals, such as heartbeat and respiration signal. The oscillation circuit of the proposed vital sensor system has been realized by a planar resonator, which functions as a positive feedback element, as well as a near-field radiator to...
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