Title :
Enhanced directivity of a tapered slot antenna for near-field imaging
Author :
Bourqui, Jeremie ; Okoniewski, Michal ; Fear, Elise
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of Calgary, Calgary, AB
Abstract :
This paper investigates the application of a novel feature called the ldquodirectorrdquo to a tapered slot antenna. This director, previously designed for a balanced antipodal Vivaldi antenna, consists of a profiled piece of higher dielectric introduced in the antenna aperture. Its effect is to increase the antenna directivity in the near-field by focusing the radiated energy in the end-fire direction. Simulated results show that the director may be highly beneficial for the tapered slot design.
Keywords :
antenna radiation patterns; directive antennas; microwave imaging; slot antennas; antenna aperture; antenna directivity; antipodal Vivaldi antenna; end-fire direction; near-field imaging; radiated energy; tapered slot antenna; Aperture antennas; Dielectric substrates; Directive antennas; Focusing; Microwave antennas; Permittivity; Slot antennas; Ultra wideband antennas; Ultra wideband technology; Vivaldi antennas; antenna; near-field imaging; tapered slot antenna; ultrawideband;
Conference_Titel :
Antenna Technology and Applied Electromagnetics and the Canadian Radio Science Meeting, 2009. ANTEM/URSI 2009. 13th International Symposium on
Conference_Location :
Toronto, ON
Print_ISBN :
978-1-4244-2979-0
Electronic_ISBN :
978-1-4244-2980-6
DOI :
10.1109/ANTEMURSI.2009.4805047
