Frequency Modulation Theory

Electronic and Instrumentation, Volume 11: Frequency Modulation Theory: Application to Microwave Links covers the theoretical principles of microwave beam technique. This five-chapter text particularly discusses the propagation of the waves used, frequency modulation, and noise and sundry distortions liable to arise either in the course of propagation, in the equipment, and in the methods used for the transmission of the information. Chapter 1 examines the transfer of the radio-frequency energy over a given path. This chapter describes the properties of propagation of radio waves, including metric, decimetric and centimetric, through the troposphere. Chapter 2 concerns all the general problems of frequency modulation, while chapter 3 deals with the propagation distortion, which is apparent in a variable-velocity guided transmission channel, and, which appears on an echoing path either in free space, or over a badly matched feeder. Chapter 4 discusses the complete problem of telephony and television transmissions over radio links. This chapter also considers in detail the requisite conditions for meeting the international standards. Chapter 5 deals with all the applied techniques, with an emphasis on radio link equipment. This book will be of great value to students and non-specialized and specialized engineers who wish to become familiar with microwave beam technique.