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A Low Cross-Polarization Smooth-Walled Horn with Improved BandwidthCorrugated feed horns offer excellent beam symmetry, main beam efficiency, and cross-polar response over wide bandwidths, but can be challenging to fabricate. An easier-to-manufacture smooth-walled feed is explored that approximates these properties over a finite bandwidth. The design, optimization and measurement of a monotonically-profiled, smooth-walled scalar feedhorn with a diffraction-limited approx. 14deg FWHM beam is presented. The feed was demonstrated to have low cross polarization (<-30 dB) across the frequency range 33-45 GHz (30% fractional bandwidth). A power reflection below -28 dB was measured across the band.
Document ID
20090043803
Document Type
Preprint (Draft being sent to journal)
Authors
Zeng, Lingzhen
Bennette, Charles L.
Chuss, David T.
Wollack, Edward J. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Date Acquired
August 24, 2013
Publication Date
January 1, 2009
Subject Category
Electronics and Electrical Engineering
Distribution Limits
Public
Copyright
Public Use Permitted.

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