https://www.selleckchem.com/pr....oducts/nedisertib.ht
Capacitor microphones are widely used to transduce sound waves into electrical voltages. The converting capacitor can either be operated in baseband (audio-frequency) or passband (radio-frequency, RF). A baseband operation can use a straightforward circuit implementation while a passband operation becomes more complex. The advantage of operating the capacitor in passband is a drastically lowered sensor impedance leading to superior performance, especially at high humidity levels. In this work, a digitized RF microphone is presented.
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