Title :
Multiple superstrates technique for a broadband cavity resonance antenna (CRA)
Author :
Al-Tarifi, M.A. ; Anagnostou, D.E. ; Amert, A.K. ; Whites, K.W.
Author_Institution :
Dept. of Electr. & Comput. Eng., South Dakota Sch. of Mines & Technol., Rapid City, SD, USA
Abstract :
A cavity resonance antenna (CRA) with three dielectric superstrates is examined and its performance is compared to those of the single superstrate CRAs of the lowest two resonances. The broadside directivity, bandwidth, and directivity-bandwidth product of all three antennas are investigated. When compared to the single superstrate CRAs, an appropriately designed three superstrate CRA can enhance to the maximum directivity, the bandwidth, or both, a result that is reflected as more than 75% increase to the directivity-bandwidth product in some cases. Theoretical results are validated by simulation using commercial numerical electromagnetics software.
Keywords :
broadband antennas; cavity resonators; directive antennas; electromagnetic wave reflection; CRA; broadband cavity resonance antenna; commercial numerical electromagnetics software; dielectric superstrates; directivity-bandwidth product; multiple superstrates technique; Bandwidth; Broadband antennas; Cavity resonators; Dielectrics; Directive antennas; Reflection; Broadband antennas; cavity resonators; directive antennas; electromagnetic reflection; leaky wave antennas; propagation;
Conference_Titel :
Antennas and Propagation (APSURSI), 2011 IEEE International Symposium on
Conference_Location :
Spokane, WA
Print_ISBN :
978-1-4244-9562-7
DOI :
10.1109/APS.2011.5996515
