Title :
45° assumption in parallel-plate polariser design
Author_Institution :
University of Stellenbosch, Department of Electrical & Electronic Engineering, Stellenbosch, South Africa
Abstract :
The model underlying the standard parallel-plate polariser design equations is analysed using diffraction theory. It is shown that the usual 45° inclination angle yields an elliptically polarised field on axis with approximately 1 dB axial ratio at the design frequency, instead of the desired circular polarisation.
Keywords :
antenna theory; electromagnetic wave polarisation; microwave antennas; 45° assumption; 45° inclination angle; circular polarisation; diffraction theory; elliptically polarised field; microwave polarisers; model; parallel-plate polariser design;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19860546
