用于中频SAWF的本征窗最小二乘设计  

Design of Intermediate Frequency SAWF Using Least Squares Method of Window Function

作　　者：王占和[1] 詹杰[1] 王轶君[1] 许明聪[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》2008年第6期658-659,663,共3页Piezoelectrics & Acoustooptics

摘　　要：提出了将本征窗函数法和数学上的最小二乘原理相结合的声表面波滤波器设计方法。该方法具有本征函数法和窗口函数法的优点,同时又采用了最小二乘法来提高设计精度。减小了叉指条数,并可以实现高的阻带衰减。This paper has put forward a SAWF design method which combined the traditional eigen method and the method of least squares. The method has not only the advaentages of eigen function method and window function method, but also can improve the design accuracy using the method of least squears. Using this design method, the number of fingers can be reduced and high suppression can be achieved.

关 键 词：声表面波滤波器(SAwF) 窗口函数 本征函数 最小二乘法 

分 类 号：TN65[电子电信—电路与系统]