A 975 to 1960 MHz,Fast-Locking Fractional-N Synthesizer with Adaptive Bandwidth Control and 4/4.5 Prescaler for Digital TV Tuners Lei Lu1,2,Zhichao Gong1.2,Youchun Liao2, Hao Min1,Zhangwen Tang 1 Fudan University,Shanghai,China 2 Ratio Microelectronics,Shanghai,China 件A 975 to 1960 MHz, Fast-Locking Fractional￾N Synthesizer with Adaptive Bandwidth Control and 4/4.5 Prescaler for Digital TV Tuners Lei Lu1,2, Zhichao Gong1,2, Youchun Liao 2 , Hao Min 1, Zhangwen Tang 1 1 Fudan University, Shanghai, China 2 Ratio Microelectronics, Shanghai, China