一、引言机械滤波器具有体积小、重量轻、耐振动、高稳定性、陡峭的频率衰耗特性等优点,广泛用在载波多路通讯。在其它无线电、有线电通讯设备,测量仪器、遥控遥测技术中也得到大量应用。仅就载波多路通讯而言,国内研制的某种多路载波电 I. INTRODUCTION Mechanical filter has the advantages of small size, light weight, vibration resistance, high stability and steep frequency attenuation characteristics, which are widely used in carrier multiplex communication. In other radio, cable communication equipment, measuring instruments, remote telemetry technology has also been a large number of applications. In terms of carrier multiplexing only, some kind of multi-carrier carrier power developed in China