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Proceedings Paper

Millimeter-wave double-dipole antennas for high efficiency reflector illumination
Author(s): D. F. Filipovic
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Paper Abstract

A double-dipole antenna integrated on a thin dielectric membrane and backed by a large ground plane is presented. The double-dipole design results in nearly equal E and H-plane patterns with a gain of 12-13dB, cross-polarization levels lower than -27dB, and a main-beam efficiency of 90%. The input impedance is around 50Ω and will match well to a Schottky-diode or SIS detector. The measured coupling between two antennas with 1λ spacing is lower than 20dB. It is therefore possible to array the double-dipole antenna for diffraction-limited imaging. The double-dipole antenna is a simple antenna with a very low cross-polarization component useful for millimeter and submillimeter-wave applications requiring a ±5% bandwidth.

Paper Details

Date Published: 1 December 1990
PDF: 3 pages
Proc. SPIE 1514, 15th International Conference on Infrared and Millimeter Waves, 15145M (1 December 1990); doi: 10.1117/12.2301612
Show Author Affiliations
D. F. Filipovic, Univ. of Michigan (United States)

Published in SPIE Proceedings Vol. 1514:
15th International Conference on Infrared and Millimeter Waves
Richard J. Temkin, Editor(s)

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