Title :
Bandwidth reconfigurable ultra-wideband arrays
Author :
Smith, N.J. ; Papantonis, Dimitrios K. ; Volakis, J.L.
Author_Institution :
Electr. & Comput. Eng. Dept., Ohio State Univ., Columbus, OH, USA
Abstract :
Past efforts on reconfiguration focused on modifying the antenna bandwidth by shifting the aperture´s frequency response using switches or piezoelectric materials. By contrast, this paper proposes bandwidth reconfiguration by starting with a wideband aperture and limiting its original bandwidth by modifying the array feed. The initial un-configured design provides 9.25:1 bandwidth for a VSWR 3:1 or better at broadside. With 5 switched components, 5 distinct bandwidth configurations are realized, namely: low-pass, high-pass, band-pass, band-stop, and the un-configured response.
Keywords :
antenna arrays; antenna feeds; aperture antennas; frequency response; ultra wideband antennas; aperture frequency response; array feed modification; band-pass bandwidth configuration; band-stop bandwidth configuration; bandwidth reconfigurable ultrawideband arrays; high-pass bandwidth configuration; initial unconfigured design; low-pass bandwidth configuration; piezoelectric materials; switched components; unconfigured response bandwidth configuration; wideband aperture; Apertures; Bandwidth; Feeds; Filtering; Impedance matching; Loading; Switches;
Conference_Titel :
Antennas and Propagation Society International Symposium (APSURSI), 2014 IEEE
Conference_Location :
Memphis, TN
Print_ISBN :
978-1-4799-3538-3
DOI :
10.1109/APS.2014.6904608
