DESIGN AND CONSTRUCTION OF A STANDING WAVE RATIO METER

Abstract

This project is designed as a measuring or instrument which measurcs the efficiency of an antenna system by determining how closely the impedance of the antenna matches the impedance of the transmitter. This meter can also be used separately 'to IllC(lSlIrl' thc tr(\\lsllliltcrs field strength. T'his scale helps to position the antenna for bcst output coverage. It can also provide the data needed to plot a map of the transmitters power around the antenna. When coupled bdvvecn the transmitter and the coaxial antenna feed cable, the meter monitors how effectively the transmitters output is transferred to the antenna. The comparison of the power sent to the antenna with power rellected back to the transmitter is known as the STANDING W A Vt~ RATIO or SWR.