Accession Number : AD0775166

Title :   A Shallow Ridged-Cavity Crossed-Slot Antenna for the 240- to 400MHz Frequency Range.

Descriptive Note : Rept. for Sep 72-Mar 73,

Corporate Author : AEROSPACE CORP EL SEGUNDO CALIF SYSTEMS ENGINEERING OPERATIONS

Personal Author(s) : King,H. E. ; Wong,J. L.

Report Date : 31 JUL 1973

Pagination or Media Count : 25

Abstract : An experimental study has been made of a shallow, ridged-cavity, crossed-slot antenna to determine its feasibility for operation in 240- to 400-MHz band. The various trends are summarized for the VSWR response characteristics as the cavity and slot parameters are varied. Based on the limited amount of data obtained from the experimental model, the VSWR <2.7:1 from 240 to 272 MHz and <2.1:1 from 290 to 400 MHz for a cavity with a maximum dimension of 33 x 33 x 4 in. Measured radiation patterns with the cavity mounted on a finite-size flat ground plane are shown. (Author)

Descriptors :   *Slot antennas, Ultrahigh frequency, Very high frequency, Cavities, Antenna radiation patterns, Feasibility studies

Subject Categories : Electrical and Electronic Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE