Dept of Biomed Eng BME 303 Applied Electronic
Dept. of Biomed. Eng. BME 303: Applied Electronic Circuit Kyung Hee Univ. Applied Electronic Circuit #9 Filter, S-plane, Active Filter 제출일 : 2014. 05. 26. 생체의공학과 2010103789 박 준 환 1 Park Jun-hwan
Dept. of Biomed. Eng. BME 303: Applied Electronic Circuit Kyung Hee Univ. 1. Filter Ø Passive Filter(이득이 없는 필터) Ø Active Filter 2 Park Jun-hwan
Dept. of Biomed. Eng. BME 303: Applied Electronic Circuit Kyung Hee Univ. 1. Filter Ø 필터의 주파수 분석 <Low Pass Filter> <Band Pass Filter> <High Pass Filter> <Bandstop Filter(notch Filter)> * 신호의 주파수 성분을 알아야 Filtering 가능. 신호와 Noise의 주파수가 다를 때 : Filter 사용 신호와 Noise의 주파수가 같을 때 : Shielding이나 그 외 방법 사용 3 Park Jun-hwan
Dept. of Biomed. Eng. BME 303: Applied Electronic Circuit Kyung Hee Univ. 1. Filter Ø Filtering의 예시(교재 Fig 3. 2에서 발췌) 4 Park Jun-hwan
Dept. of Biomed. Eng. BME 303: Applied Electronic Circuit Kyung Hee Univ. 1. Filter Ø 실제의 Filter <Low Pass Filter> Transition Band Pass Band Stop Band 5 Park Jun-hwan
Dept. of Biomed. Eng. BME 303: Applied Electronic Circuit Kyung Hee Univ. 1. Filter 6 Park Jun-hwan
Dept. of Biomed. Eng. BME 303: Applied Electronic Circuit Kyung Hee Univ. 1. Filter “회로” * 전압이득 Filter를 구현하기 위해 반드시 Capacitor나 Inductor가 필요하다. - S가 나와야 하기 때문 * 예시 7 Park Jun-hwan
Dept. of Biomed. Eng. BME 303: Applied Electronic Circuit Kyung Hee Univ. 2. S-plane Ø S-plane(Pole-Zero Diagram) Pole Zero Right Half Plane(RHP) Left Half Plane(LHP) 8 Park Jun-hwan
Dept. of Biomed. Eng. BME 303: Applied Electronic Circuit Kyung Hee Univ. 2. S-plane Diverge “시스템에서는 존재 X” Die out 9 Park Jun-hwan
Dept. of Biomed. Eng. BME 303: Applied Electronic Circuit Kyung Hee Univ. 2. S-plane 10 Park Jun-hwan
Dept. of Biomed. Eng. BME 303: Applied Electronic Circuit Kyung Hee Univ. 2. S-plane 11 Park Jun-hwan
Dept. of Biomed. Eng. BME 303: Applied Electronic Circuit Kyung Hee Univ. 3. Active Filter Ø First Order Active Filter * Low Pass Filter <Bode Plot> 12 Park Jun-hwan
Dept. of Biomed. Eng. BME 303: Applied Electronic Circuit Kyung Hee Univ. 3. Active Filter Ø First Order Active Filter * High Pass Filter 13 Park Jun-hwan
Dept. of Biomed. Eng. BME 303: Applied Electronic Circuit Kyung Hee Univ. 3. Active Filter Ø First Order Active Filter * Band Pass Filter(Capacitor와 pole의 수가 같다) 14 Park Jun-hwan
Dept. of Biomed. Eng. BME 303: Applied Electronic Circuit Kyung Hee Univ. 3. Active Filter Ø First Order Active Filter * Phase Shifter(All pass filter) 15 Park Jun-hwan
Dept. of Biomed. Eng. BME 303: Applied Electronic Circuit Kyung Hee Univ. 3. Active Filter Ø First Order Active Filter * Phase Shifter(All pass filter) 이어서 이득 1 : 진폭감쇄가 없다 신호의 Amplitude를 바꾸지 않으면서 위상만을 변화시키고자 할 때 사용 16 Park Jun-hwan
Dept. of Biomed. Eng. BME 303: Applied Electronic Circuit Kyung Hee Univ. 3. Active Filter Ø Second Order Active Filter 17 Park Jun-hwan
Dept. of Biomed. Eng. BME 303: Applied Electronic Circuit Kyung Hee Univ. 3. Active Filter Ø Second Order Active Filter (ζ > 1) (0 < ζ < 1) (ζ = 0) 18 (ζ < 0) Park Jun-hwan
Dept. of Biomed. Eng. BME 303: Applied Electronic Circuit Kyung Hee Univ. 3. Active Filter Ø Second Order Active Filter * 종합 (ζ = 0) (ζ < 1) (ζ = 1) (ζ < 0) (0 < ζ < 1) (ζ = 0) 19 Park Jun-hwan
Dept. of Biomed. Eng. BME 303: Applied Electronic Circuit Kyung Hee Univ. 3. Active Filter Ø Second Order Active Filter 2차 Filter가 1차 보다 성능은 좋으나 Q값에 따라 파형이 바뀜 20 Park Jun-hwan
Dept. of Biomed. Eng. BME 303: Applied Electronic Circuit Kyung Hee Univ. 감사합니다. 21 Park Jun-hwan
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