雙模聲表面波諧振型濾波器的研究

在移動通信設備中，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，受到了廣泛的關注。本文給出了雙模耦合諧振型濾波器的等效電路，計算出了電路的內部參數(shù)，并且對電路模擬仿真，對結果做了誤差分析,提出了改進的方法，最后就濾波器的性能進行了相應的討論。
關鍵詞: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