在移動(dòng)通信設(shè)備中，各類聲表面波傳感器有廣泛的用途，尤其是雙模耦合諧振濾波器
能滿足低插損、窄通帶的要求，受到了廣泛的關(guān)注。本文給出了雙模耦合諧振型濾波器的等效電路，計(jì)算出了電路的內(nèi)部參數(shù)，并且對(duì)電路模擬仿真，對(duì)結(jié)果做了誤差分析,提出了改進(jìn)的方法，最后就濾波器的性能進(jìn)行了相應(yīng)的討論。
關(guān)鍵詞:聲表面波;濾波器;等效電路
Research of the Coupling SAW Resonator Filter with Double-Mode LI Wei, WEI Yi-Qun, ZHU Jia-Lin Department of Information and Communication engineer, Beijing Information Technology Institute Abstract : There are wide purpose to all kinds of SAW transducer for mobile communication device. Especially, it is comprehensive attention to double-mode coupling resonator filter because of low loss and narrow passband .Equivalent circuit of coupling SAW resonator filter with double-mode, inner parameters of circuit and simulation are given in this article, error analysis and amelioration are given synchronously. Finally, some discussions about performance of the filter were given.
Key words: SAW; filter; equivalent circuit