Title :
On the Behavior of the Radiation Field from Large-Aperture Terahertz Photoconductive Antenna under Impulsive Excitation
Author :
Neshat, M. ; Saeedkia, D. ; Safavi-Naeini, S.
Author_Institution :
Dept. of Electr. & Comput. Eng., Waterloo Univ., Ont.
Abstract :
In this paper, large-aperture terahertz photoconductive antennas, placed on a hyper-hemispherical silicon lens and excited by a short, pulse laser, are studied. The behavior of the radiation field is investigated in terms of several aspects. Our study shows that the radiated field is saturated when the photo-conductivity exceeds a threshold value defined be the permittivity of the photoconductor material.
Keywords :
antenna radiation patterns; photoconducting devices; submillimetre wave antennas; hyper-hemispherical silicon lens; impulsive excitation; large-aperture terahertz photoconductive antenna; radiation field; Apertures; Charge carrier processes; Electron optics; Laser excitation; Lenses; Optical films; Optical pulses; Optical surface waves; Photoconducting materials; Photoconductivity;
Conference_Titel :
Antenna Technology: Small and Smart Antennas Metamaterials and Applications, 2007. IWAT '07. International Workshop on
Conference_Location :
Cambridge
Print_ISBN :
1-4244-1088-6
Electronic_ISBN :
1-4244-1088-6
DOI :
10.1109/IWAT.2007.370182
