Title :
A metamaterial frequency-selective superstrate for phased-array applications
Author :
Bayatpur, Farhad ; Sarabandi, Kamal
Author_Institution :
Electr. Eng. & Comput. Sci. Dept., Univ. of Michigan, Ann Arbor, MI
Abstract :
A new scheme for design of phased-array antennas is discussed in this article. The new approach proposes a reduced array by eliminating RF band-pass filters required in the antenna receive path. To perform the filtering, the array is covered with a thin metamaterial frequency-selective surface separated from the antenna by a dielectric spacer. The overall thickness of the cover (superstrate) is ~lambda/10. In addition to reducing the complexity of the phased-arrays, the metamaterial superstrate enhances the bandwidth of the antenna at least 250% in case of a patch-array considered in this paper.
Keywords :
antenna phased arrays; microstrip antennas; RF band-pass filters; antenna receive path; dielectric spacer; metamaterial frequency-selective superstrate; metamaterial frequency-selective surface; metamaterial superstrate; patch array; phased-array antennas; phased-array applications; Antenna arrays; Band pass filters; Bandwidth; Filtering; Frequency selective surfaces; Magnetic materials; Metamaterials; Planar arrays; Radio frequency; Spatial filters;
Conference_Titel :
Radar Conference, 2009 IEEE
Conference_Location :
Pasadena, CA
Print_ISBN :
978-1-4244-2870-0
Electronic_ISBN :
1097-5659
DOI :
10.1109/RADAR.2009.4977143
