In order to transmit hybrid TV signals, a new kind of small wideband and active splitter for TV was designed. This device covers CATV ' s very high frequency ( VHF) band and satellite television' s ultra - high frequency (UHF) band with excellent nonlinear performance, its passband ripple is below ldB .voltage standing wave ratio (VSWR) is no more than 1.3 ,port - isolation is greater than 20dB. Circuit design methods and simulation models are given. A new mixed type of band elimination filter is presented. Feedback technique and compensation technique were used integrated to realize the high - performance splitter.%针对多种电视信号混合传输的需求,设计了1种小型化、宽频带、有源型电视信号分路器.该分路器覆盖有线电视的甚高频(VHF)波段和卫星电视的超高频(UHF)波段,带内波动小于1 dB,端口驻波小于1.3,端口隔离大于20 dB,非线性性能优良.给出了各部分的硬件电路的设计方法和电路仿真模型,提出了1种新的混合型带阻滤波器,综合利用反馈技术和电路补偿技术实现了分路器的高性能指标.
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