The Motorola Multi-Pole Monolithic Filter Project

Abstract

A &pole VHF monolithic crystal filter and a crystal resonator on a single crystal blank have been designed and are being manufactured for use in a radio pager. This paper reviews the design of the device, emphasizing how the various design specifications led to a set of manufacturing tolerances which in turn influenced the design of the device and the fabrication processes. These fabrication processes are detailed in a companion paper [l].