Title :
A wideband resonant cavity antenna based on a single layer superstrate
Author :
Zeb, Basit Ali ; Esselle, Karu P.
Author_Institution :
Dept. of Eng., Macquarie Univ., Sydney, NSW, Australia
Abstract :
A quarter-wavelength-thick unprinted dielectric slab is considered as the superstrate for a resonant cavity antenna (RCA). The behavior of the broadside directivity and radiation bandwidth is numerically investigated. It is shown that by properly choosing the superstrate´s lateral dimensions, the bandwidth of RCA can be enhanced as compared to the classical designs. Computed results predict an increase in 3-dB directivity bandwidth up to 31% and peak directivity of 15 dBi at 11.5 GHz, by employing a single superstrate with permittivity of 4.4.
Keywords :
antenna radiation patterns; broadband antennas; cavity resonators; directive antennas; numerical analysis; permittivity; slabs; RCA; broadside directivity behavior; frequency 11.5 GHz; low-permittivity; quarter-wavelength-thick unprinted dielectric slab; radiation bandwidth; single layer superstrate; superstrate lateral dimensions; wideband resonant cavity antenna; Broadband antennas; Cavity resonators; Dielectrics; Slabs; Wideband;
Conference_Titel :
Antennas and Propagation Society International Symposium (APSURSI), 2013 IEEE
Conference_Location :
Orlando, FL
Print_ISBN :
978-1-4673-5315-1
DOI :
10.1109/APS.2013.6711034
