A more systematic and rigorous procedure for analyzing the radiation patterns of an open-ended wavegnide radiating in the presence of a dielectric sphere is presented. The analysis is based on the formula developed earlier [5] for radial translation of the spherical vector wave functions. An experimental program is described which confirms the validity of the analysis presented. Copyright © 1982 by The Institute of Electrical and Electronics Engineers. Inc.

M. S. Narasimhan

Antennas

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IIT Madras

Radiation from aperture antennas radiating in the presence of a dielectric sphere

IEEE Transactions on Antennas and Propagation

The fields radiated by a feed structure consisting of a dielectric sphere placed in front of, but displaced from, the open end of a corrugated pipe with quarter-wave teeth, carrying the HE<inf>11</inf> mode, are derived. It is shown that this feed system has near-circular far-field characteristics with increased on-axis gain. The feed also has a reduced input VSWR due to the aperture-sphere separation. Theoretical expressions are derived for the radiated far-field components, by treating the off-set sphere as a microwave lens. Experimental results obtained from a test feed confirm the theoretical calculations made. Copyright © 1975 by The Institute of Electrical and Electronics Engineers, Inc.

Radiation Characteristics of a Dielectric Sphere-Loaded Corrugated Pipe

Time-Harmonic Electromagnetic Fields

IEEE Transactions on Microwave Theory and Techniques

Microwave Irradiation Design Using Dielectric Lenses (Short Papers)

Radiation from a homogeneous sphere mounted on a waveguide aperture

Annual report, May 1, 1972--June 15, 1973

Radiation from Aperture Antennas Radiating in the Presence of a Dielectric Sphere

Journal	IEEE Transactions on Antennas and Propagation
ISSN	0018926X
Open Access	No