TELEVISION RECEIVER WITH SAW FILTER COUPLING
申请公布号:MY131689(A)
申请号:MYPI9504019
申请日期:1995.12.21
申请公布日期:2007.08.30
发明人:PETER JOHANNES HENRICUS RUTTEN;EDUARD FERDINAND STIKVOORT
分类号:H03H7/38;H04B1/16;H03H9/145;H03H9/64;H04B1/06;H04B1/26;H04N5/44
主分类号:H03H7/38
摘要:IN A TELEVISION RECEIVER A SAW FILTER ( FSAW ) IS PRECEDED BY A COUPLING NETWORK ( CNW ). THE COUPLING NETWORK ( CNW ) COMPRISES AN INDUCTOR ( LP ) BETWEEN TWO IT PUT TERMINALS OF THE SAW FILTER ( ISI, IS2). IT FURTHER COMPRISES A SERIES RESONANCE CIRCUIT ( SRC ) COUPLED TO AT LEAST ONE OF THE INPUT TERMINALS ( ISI ). IN ORDER TO REDUCE SIGNAL DISTORTION A RESISTOR ( RP ) IS COUPLED BETWEEN THE TWO INPUT TERMINALS ( ISI, IS2 ). ALTERNATIVELY, A RESISTOR ( RS ) IS COUPLED IN PARALLEL TO THE SERIES RESONANCE CIRCUIT ( SRC ).FIG. 5
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