Title :
An Antenna for Controlling the Nonfading Range of Broadcasting Stations
Author :
Jeffers, Charles L.
Author_Institution :
Radio Station WOAI, San Antonio, Texas
Abstract :
A new type of broadcast antenna is described which radiates very little energy over a wide, high angle. The angle above which minimum energy is radiated can be varied electrically from 40° to 60°, thus permitting the fading wall to be adjusted for maximum primary service. The electrical height of the antenna is dependent upon the specific vertical pattern desired but is approximately 300°. The results of experiments with small model antennas are in good agreement with theory.
Keywords :
Antenna theory; Conductivity; Fading; Frequency; Linear antenna arrays; Narrowband; Noise level; Poles and towers; Radio broadcasting; Senior members;
Journal_Title :
Proceedings of the IRE
DOI :
10.1109/JRPROC.1948.232619