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A Cassegrain Offset-Fed Dual-Band ReflectarrayAn X/Ka dual-band microstrip reflectarray with circular polarization (CP) has been constructed using thin membranes and Cassegrain offset-fed configuration. It is believed that this is the first Cassegrain reflectarray ever been developed. This antenna has a 75-cm-diameter aperture and uses metallic subreflector and angular-rotated annular ring elements. It achieved a measured -3dB-gain bandwidth of 700 MHz at X-band and 1.5 GHz at Ka-band, as well as a CP bandwidth (3dB axial ratio) of more than 700 MHz at X-band and more than 2 GHz at Ka-band. The measured peak efficiencies are 49.8% at X-band and 48.2% at Ka-band.
Document ID
20080007492
Acquisition Source
Jet Propulsion Laboratory
Document Type
Preprint (Draft being sent to journal)
External Source(s)
Authors
Huang, John
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Han, Chulmin
(Texas A&M Univ. College Station, TX, United States)
Chang, Kai
(Texas A&M Univ. College Station, TX, United States)
Date Acquired
August 24, 2013
Publication Date
July 9, 2006
Subject Category
Communications And Radar
Meeting Information
Meeting: IEEE Antennas and Propagation Symposium
Location: Albuquerque, NM
Country: United States
Start Date: July 9, 2006
End Date: July 14, 2006
Sponsors: Institute of Electrical and Electronics Engineers
Distribution Limits
Public
Copyright
Other
Keywords
offset fed
antennas
reflectarray
Cassegrain
dual-bands

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