Partially reflecting sheet arrays
- 1 October 1956
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Antennas and Propagation
- Vol. 4 (4) , 666-671
- https://doi.org/10.1109/tap.1956.1144455
Abstract
Multiple reflections of electromagnetic waves between two planes are studied, and the increase in directivity that results by placing a partially reflecting sheet in front of an antenna with a reflecting screen is investigated at a wavelength of 3.2 cm. The construction and performance of various models of such arrays is discussed. Thus, for example, a "reflex-cavity antenna" with an outer diameter of1.88 \lambdaand an over-all length of only0.65 \lambdais described which has half-power beamwidths of34\degand41\degin theEandHplanes, respectively, and a gain of approximately 14 db. It is shown that larger systems produce considerably greater directivity but that their efficiency is poor.Keywords
This publication has 1 reference indexed in Scilit:
- Surface impedance of an infinite parallel-wire grid at oblique angles of incidenceJournal of the Institution of Electrical Engineers - Part IIIA: Radiolocation, 1946