Analysis of the Design and Optimization of a Yagi Antenna with High Gain in Meteorological Communication

摘要

This paper designs a 3-element Yagi beam aerial in free space for a frequency of 150 MHz using EZNEC, which has the maximum possible gain at the frequency, and is with front/back ratio of at least 10 dB, and input impedance to be purely resistive. Besides, it determines the optimum length of each element and the optimum spacing between elements (5), which requires readjustment of the element lengths.