ABSTRACT
Energy can be transmitted either by radiating electromagnetic waves in to air as in radio and TV or it can be moved through a conducting arrangement known as transmission line. Therefore Transmission line is a conductive method of guiding electrical energy from one place to another place. Basically transmission lines are used to link between antenna and a transmitter or receiver. There are different types of transmission lines. This chapter discusses the representation of transmission line with primary constants and secondary constants. Along with the primary and secondary constants, transmission lines have wave length, velocity of propagation (phase velocity or wave velocity) and group velocity. Generally a modulated signal is transmitted through the transmission line which contains many frequency components. The chapter explains the two types of line distortions such as frequency distortion and delayed distortion. It also discusses microstrip transmission line which is used to convey microwave-frequency signals.
