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Proceedings Paper

Infrared measurements of waveguide modes and radiation patterns of beveled-cut circular waveguide microwave aperture antennas
Author(s): John D. Norgard; Joseph Sadler; Ronald M. Sega; Ernest A. Baca; William D. Prather
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Paper Abstract

An IR imaging technique has been developed to map 2D electric field distributions near an emitter or a scattering body. This technique is applied to design a highly directive microwave aperture antenna. The antenna is made from circular waveguides. The antenna is fed with a circularly symmetric coaxial TM01 mode. From symmetry, the TM01 mode does not radiate in the bore-sight direction from an open-ended circular waveguide; however, the dominant circular TE11 mode does have a directive main beam radiation pattern.

Paper Details

Date Published: 21 March 1994
PDF: 10 pages
Proc. SPIE 2245, Thermosense XVI: An International Conference on Thermal Sensing and Imaging Diagnostic Applications, (21 March 1994); doi: 10.1117/12.171179
Show Author Affiliations
John D. Norgard, Air Force Phillips Lab. and Univ. of Colorado/Colorado Springs (United States)
Joseph Sadler, Air Force Phillips Lab. (United States)
Ronald M. Sega, Air Force Phillips Lab. and NASA Johnson Space Ctr. (United States)
Ernest A. Baca, Air Force Phillips Lab. (United States)
William D. Prather, Air Force Phillips Lab. (United States)


Published in SPIE Proceedings Vol. 2245:
Thermosense XVI: An International Conference on Thermal Sensing and Imaging Diagnostic Applications
John R. Snell, Editor(s)

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