Accession Number : ADP005417

Title :   Pattern Prediction of Broadband Monopole Antennas on Finite Groundplanes Using the Bor Moment Method,

Corporate Author : COUNCIL FOR SCIENTIFIC AND INDUSTRIAL RESEARCH PRETORIA (SOUTH AFRICA)

Personal Author(s) : Baker,Dirk E. ; Botha,Louis

Report Date : FEB 1987

Pagination or Media Count : 26

Abstract : This paper describes the design and measured performance of very thick cylindrical monopole antennas (length-to-diameter ratios about 2). These very thick monopole antennas exploit the physical dimensions of common coaxial connectors to achieve 3:1 frequency bandwidths with VSWR less than 2:1 in the 2 to 20 GHz frequency range. The antenna patterns of the very thick monopole antennas differ significantly from those of their thin counterparts. The body of revolution moment method technique is used to predict the E-plane patterns of the very thick cylindrical monopoles as those of conical monopoles at the center of finite circular groundplanes. Agreement between measured and predicted patterns is excellent.

Descriptors :   *BROADBAND ANTENNAS, *MONOPOLE ANTENNAS, CYLINDRICAL BODIES, CONICAL BODIES, THICKNESS, STANDING WAVE RATIOS

Subject Categories : Electrical and Electronic Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE