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구분 출원국
출원년도 ~ 키워드

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등록 잡음 필터를 사용한 MEMS 마이크로폰

잡음 필터를 사용한 MEMS 마이크로폰
이미지 확대
발명자
김이경, 권종기, 노태문, 조민형, 김종대, 양우석
출원번호
13762300 (2013.02.07)
공개번호
20140079254 (2014.03.20)
등록번호
8983090 (2015.03.17)
출원국
미국
협약과제
초록
An MEMS microphone is provided which includes a reference voltage/current generator configured to generate a DC reference voltage and a reference current; a first noise filter configured to remove a noise of the DC reference voltage; a voltage booster configured to generate a sensor bias voltage using the DC reference voltage the noise of which is removed; a microphone sensor configured to receive the sensor bias voltage and to generate an output value based on a variation in a sound pressure; a bias circuit configured to receive the reference current to generate a bias voltage; and a signal amplification unit configured to receive the bias voltage and the output value of the microphone sensor to amplify the output value. The first noise filter comprises an impedance circuit; a capacitor circuit connected to a output node of the impedance circuit; and a switch connected to both ends of the impedance circuit.
패밀리
 
패밀리 특허 목록
구분 특허 출원국 KIPRIS
등록 잡음 필터를 사용한 MEMS 마이크로폰 대한민국 KIPRIS