Accession Number : AD0286654

Title :   FAST WAVE RADIATORS

Corporate Author : ARMY RESEARCH OFFICE WASHINGTON D C

Personal Author(s) : HATKIN,LEONARD

Report Date : DEC 1962

Pagination or Media Count : 1

Abstract : Fast wave radiation as dealt with in this paper refers to radiation from antennas which carry currents travelling at a phase velocity greater than that of light in vacuo. An introductory section describes slow and fast waves travelling along guiding structures, and points out the inherent differences between them. The general properties of fast waves on transmission linesARE DEDUCED FROM A SIMPLIFIED ANALYSIS. A fast wave antenna is next described consisting of two parallel, electrically balanced strip lines. The high phase velocity is caused by shunt loading the parallel strips by means of conducting pins connecting the strips. Theoretical phase shift and attenuation constants are obtained for this structure by the transverse resonance method. Measurements of these parameters as well as patterns are presented and good agreement with calculated values is demonstrated. Applications and future promising work are discussed and recent work in applying the principles is also men ioned. (Author)

Descriptors :   *ANTENNAS, *COMMUNICATION THEORY, *RADIO ANTIJAMMING, RADIO INTERFERENCE, RADIO SIGNALS, WAVE PROPAGATION, WAVEGUIDES

Distribution Statement : APPROVED FOR PUBLIC RELEASE