Скачать или смотреть Classical Electrodynamics - Transmission Line - A Brief Introduction

Radio communication requires the transference of energy between the transmitter and the receiver. The intelligence as a radio frequency power is available at the transmitter output. For the release of this energy into the space, it is necessary to feed it to some radiating conductor. Because of disturbance and attenuation due to some factors this process of radiation is not preferred near the transmitter location. The first step is to transfer this r.f. power from transmitter to the radiating element. A device with minimum energy loss and distortion used for the transfer of r.f. Energy to some radiator is a Transmission Line. Basically transmission lines are of two types,namely Parallel Wire Line and Coaxial Line. The parallel line is best suited for low frequencies while the coaxial line is suitable for high frequencies.