阶梯型射频SAW滤波器的计算机模拟  

Computer Simulation of Stepped-Finger RF-SAW Filter

作　　者：詹杰[1] 王占和[1] 鉴海防[1] 黄占兵[1] 

机构地区：[1]北京理工大学电子工程系,北京100081

出　　处：《压电与声光》2005年第3期218-221,共4页Piezoelectrics & Acoustooptics

摘　　要：简述了射频声表面波滤波器(RF-SAWF)的研究进展,讨论了谐波法中的阶梯型叉指换能器(IDT)结构的等效电路模型。并根据该模型计算并模拟了RF-SAWF的幅频响应,模拟结果证明阶梯型IDT可有效地激发高次谐波,抑制基波和其他无用谐波。This paper describes current development of radio frequency surface acoustic wave filter (RF-SAWF), and then the equivalent circuit model of the stepped-figner IDT working at harmonic frequency is fully detailed.It also presents the RF-SAWF's frequency response based on this equivalent circuit model. Simulation results verify that stepped-finger IDT can generate desired harmonic effectively and suppress fundamental and other unwanted harmonics.

关 键 词：声表面波滤波器(SAWF) 又指换能器(IDT) 谐波 阶梯型 

分 类 号：TN65[电子电信—电路与系统]