Title :
Optimised slot reradiation to modify foreground reflection into an array
Author_Institution :
James Cook University of North Queensland, Department of Physics, Townsville, Australia
fDate :
9/1/1973 12:00:00 AM
Abstract :
The reduction of foreground reflection into a vertically polarised 1000 MHz u.h.f. low delta aerial using a half-wave resonant slot in a one-quarter-wavelength-wide conducting flange is examined. The impedance, radiation efficiency and polar-diagram characteristics of a slot in limited conducting planes are presented. Procedures to optimise a slot to complement the Yagi-type array of vertical monopoles are described, and the application of such a slot to a 21.840 MHz h.f. aerial in Townsville, Australia, is discussed.
Keywords :
antenna radiation patterns; microwave antenna arrays; 1000 MHz; UHF low delta aerial; foreground reflection; half wave resonant slot; microwave antenna arrays; optimised slot reradiation;
Journal_Title :
Electrical Engineers, Proceedings of the Institution of
DOI :
10.1049/piee.1973.0214
