CMMB用滤波器的仿真设计  

Simulation and Design of Filter for CMMB

作　　者：钟少波[1] 

机构地区：[1]电子科技大学物理电子学院,四川成都610054

出　　处：《压电与声光》2013年第5期628-630,共3页Piezoelectrics & Acoustooptics

摘　　要：报道了一种具有宽带宽和高阻带抑制比的中国移动多媒体广播(CMMB)用滤波器。采用了梯形声表面波(SAW)陷波网络和LC高通滤波网络的综合设计结构,运用SAW谐振器的XTAL2等效模型和Murata电感元件构建原理电路,在ADS 2009中进行综合优化仿真得出滤波器的频响曲线,使滤波器的通带插损小于2.0dB,阻带抑制大于43dB,能很好地进行选频。A filter with wide bandwidth and high impedance for China mobile multimedia broadcasting （CMMB） has been reported in this paper. The filter uses a ladder type SAW notch network and high-pass LC filter network structure. The principle circuit is constructed by using XTAL2 equivalent model of SAW resonator and Murata in- ductive components. The frequency response of filter is obtained through integrated simulation optimization within ADS. The insertion loss of pass-band is less than 2.0dB, the stop-band rejection is better than 43dB, and the fre- quency selection is very well.

关 键 词：梯形声表面波陷波网 中国移动多媒体广播（CMMB） 声表面波（SAW）谐振器 

分 类 号：TN65[电子电信—电路与系统] TN944