Introduction

Abstract

The increasing demand in radio communications for channel space as well as the use of sophisticated navigation systems and data transmission has resulted in increased frequency stability requirements in many items of equipment. As a result, the demands on crystal oscillators have become more stringent. In many cases, it is no longer sufficient merely to use a crystal oscillator; now it is necessary to take measures to ensure that the crystal oscillator will possess a high degree of frequency stability. Designs of this type are often quite difficult for the engineer who has had little or no prior experience with crystal oscillators; consequently, much of the material in this book is directed to the individual who has a good background in circuit theory but who is not necessarily experienced with crystal oscillator design.