Title :
Dielectric director for near-field microwave imaging
Author :
Bourqui, Jeremie ; Okoniewski, Michal ; Fear, Elise
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of Calgary, Calgary, AB
Abstract :
A dielectric director has been introduced to enhance near-field radiation properties of ultra-wideband antennas. This paper presents a parametric study of selected parameters that define the director used to improve the radiation behavior of a balanced antipodal Vivaldi antenna. The near-field radiation distortion and intensity are of interest. The director permittivity is found to be the key parameter that controls the near-field radiation behavior.
Keywords :
antenna radiation patterns; dielectric bodies; directive antennas; microwave antennas; microwave imaging; permittivity; ultra wideband antennas; balanced antipodal Vivaldi antenna; dielectric director; director permittivity; near-field microwave imaging; near-field radiation distortion; ultra-wideband antennas; Aperture antennas; Breast; Dielectrics; Microwave imaging; Near-field radiation pattern; Permittivity; Radar detection; Reflection; Ultra wideband antennas; Vivaldi antennas;
Conference_Titel :
Antennas and Propagation, 2009. EuCAP 2009. 3rd European Conference on
Conference_Location :
Berlin
Print_ISBN :
978-1-4244-4753-4
Electronic_ISBN :
978-3-00-024573-2
