연속시간 저역 통과 델타-시그마 변조기를 위한 2차 루프 필터
조영균, 이광천, 정재호
- 9356618 (2016.05.31)
13VI1600, 차세대 이동통신 기지국용 Class-S 전력증폭기 기술 연구,
- Provided is a second order loop filter (LF). The second order LF includes: an operational amplifier including a first input, a second input receiving a differential input of the first input, and an output; an inverter inverting a signal output from the output of the operational amplifier to output an inverted signal; a first resistor connected to between the first input and a first node; a second resistor connected to between the output of the operational amplifier and the first node; a third resistor connected to between the first input and an input signal; a first capacitor connected to between the second input and the first node; a second capacitor connected to between the output of the operational amplifier and an output of the inverter; and a third capacitor connected to between the output and the first input of the operational amplifier, wherein the second input is connected to a ground voltage.
- KSP 제안 키워드
- Delta-Sigma Modulator, Differential input, Input signal, Operational Amplifiers(Op-Amps), an inverter, delta-sigma, loop-filter(LF), second-order