Design of an Optimized Feed for Printed Reflectarray Antenna

Author

Zhang, Peng ; Zhang, Wenxun

Author_Institution

State Key Lab. of Millimeter Waves, Southeast Univ. Nanjing, Nanjing

fYear

2008

fDate

4-6 March 2008

Firstpage

259

Lastpage

262

Abstract

A printed reflectarray antenna consists of a feed and a planar array of microstrip patches. The performances of whole antenna system obviously depend on the radiation pattern of the feed. In order to enhance the aperture efficiency, a saddle-shaped pattern of the feed is required. In this paper, a one-dimensional (1-D) pattern synthesis for feed is performed by employing a coupled tapered slot-line antenna (CTSA) operating in the sum-mode, which results in uniform illumination on the array aperture. Compared to a traditional tapered slot-line feed, the optimized one improves the 1-D aperture efficiency from 70.6% to 83.7%. Its available frequency range covers (9.7-10.6) GHz with 9% bandwidth.

Keywords

antenna radiation patterns; microstrip antenna arrays; planar antenna arrays; reflector antenna feeds; slot antenna arrays; antenna radiation pattern; coupled tapered slot-line antenna; microstrip patch antenna; one-dimensional pattern synthesis; optimized antenna feed; planar array antenna; printed reflectarray antenna; saddle-shaped pattern; Antenna feeds; Antenna radiation patterns; Aperture antennas; Aperture coupled antennas; Design optimization; Microstrip antenna arrays; Microstrip antennas; Planar arrays; Reflector antennas; Slot antennas;

fLanguage

English

Publisher

ieee

Conference_Titel

Antenna Technology: Small Antennas and Novel Metamaterials, 2008. iWAT 2008. International Workshop on

Conference_Location

Chiba

Print_ISBN

978-1-4244-1522-9

Type

conf

DOI

10.1109/IWAT.2008.4511332

Filename

4511332