A Novel Reflector/Reflectarray Antenna An Enabling Technology for NASA's Dual-Frequency ACE Radar | Zendy

Michael Cooley | Zendy; P. Racette | Zendy; Richard Park | Zendy; G. Heymsfield | Zendy; Peter Stenger | Zendy; Lihua Li | Zendy

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A Novel Reflector/Reflectarray Antenna An Enabling Technology for NASA's Dual-Frequency ACE Radar

Author(s) -

Michael Cooley,

P. Racette,

Richard Park,

G. Heymsfield,

Peter Stenger,

Lihua Li

Publication year - 2011

Publication title -

nasa sti repository (national aeronautics and space administration)

Language(s) - English

Resource type - Conference proceedings

DOI - 10.2514/6.2011-7318

Subject(s) - reflector (photography) , radar , antenna (radio) , periscope antenna , remote sensing , dual (grammatical number) , cassegrain antenna , computer science , optics , antenna measurement , physics , telecommunications , geology , art , light source , literature

This paper describes a novel dual-frequency shared aperture Ka/W-band antenna design that enables wide-swath imaging via electronic scanning at Ka-band and is specifically applicable to NASA's Aerosol, Cloud and Ecosystems (ACE) mission. The innovative antenna design minimizes size and weight via use of a shared aperture and builds upon NASA's investments in large-aperture reflectors and high technology-readiness-level (TRL) W-band radar architectures. The antenna is comprised of a primary cylindrical reflector/reflectarray surface illuminated by a fixed W-band feed and a Ka-band Active Electronically Scanned Array (AESA) line feed. The reflectarray surface provides beam focusing at W-band, but is transparent at Ka-band.

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