상세정보
등록 잡음 필터를 사용한 ＭＥＭＳ 마이크로폰
- 출원번호
- 13762300 (2013.02.07)
- 공개번호
- 20140079254 (2014.03.20)
- 등록번호
- 8983090 (2015.03.17)
- 출원국
- 미국
- 협약과제
- 12MB2400, 스마트&그린 빌딩용 자가충전 지능형 센서노드 플랫폼 핵심기술 개발, 김종대
- 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.
- KSP 제안 키워드
- Capacitor circuit, MEMS Microphone, Noise filter, Reference current, Sensor Bias, Sound pressure, Voltage booster, bias circuit, bias voltage, current generator, microphone sensor, reference voltage, signal amplification
- 패밀리
| 구분 | 특허 | 출원국 | KIPRIS |
|---|---|---|---|
| 등록 | 잡음 필터를 사용한 ＭＥＭＳ 마이크로폰 | 대한민국 | KIPRIS |