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이산시간 필터와 델타 시그마 에이디씨를 이용한 모바일 티브용 이산시간 알에프 리시버 구현
이영재(Young-Jae Lee),민병훈(Byung-Hun Min),호아이남(Hoai-Nguyen Nam),김성도(Seong-Do Kim),유현규(Hyun-Kyu Yu) 대한전자공학회 2010 대한전자공학회 학술대회 Vol.2010 No.6
The discrete-time RF receiver intended for mobile TV applications is developed to be easily merged with digital front-end (DFE) with excellent performances. The digital noise cancellation logic block of MASH 2-2 delta-sigma modulator is directly connected with DFE and reduce its quantization noise. A discrete-time DS-ADC predicting a SNR of 70dB over 4MHz signal bandwidth at a sampling rate of 250MHz is cascaded with switched capacitor filter through the clock synchronization to eliminate the signal loss between SCF and DS-ADC. The sensitivity for DVB-H system is about -90dBm with a power consumption of 100mW.