Title :
Characterizing a WR-1.5 diagonal horn antenna using photo-induced coded-aperture imaging
Author :
Shams, M.I.B. ; Jiang, Z. ; Qayyum, J. ; Rahman, Sazid ; Singh, Sushil ; Hesler, J.L. ; Fay, Patrick ; Liu, L.
Author_Institution :
Univ. of Notre Dame, Notre Dame, IN, USA
Abstract :
We report a novel approach using terahertz (THz) photo-induced coded-aperture imaging (PI-CAI) technique to characterize a WR-1.5 (500-750 GHz) diagonal horn antenna at 590 GHz. The measured antenna beam profiles show decent Gaussian shape and propagation properties, as expected. Antenna far-field radiation patterns extracted from beam images agree well with theory and simulation. On the basis of the imaging results, the antenna Gaussian coupling efficiency (i.e., Gaussicity) is calculated to be ~84%. The reported approach has great potential for fast and accurate characterization of THz horn antennas.
Keywords :
Gaussian processes; antenna radiation patterns; antenna testing; horn antennas; submillimetre wave antennas; terahertz wave imaging; Gaussian shape; Gaussicity; PI-CAI technique; WR-1.5 diagonal horn antenna; antenna Gaussian coupling efficiency; antenna beam profiles; antenna far-field radiation patterns; beam images; frequency 500 GHz to 750 GHz; propagation properties; terahertz THz photo-induced coded-aperture imaging; Antenna measurements; Antenna radiation patterns; Couplings; Horn antennas; Imaging; Measurement by laser beam;
Conference_Titel :
Infrared, Millimeter, and Terahertz waves (IRMMW-THz), 2014 39th International Conference on
Conference_Location :
Tucson, AZ
DOI :
10.1109/IRMMW-THz.2014.6956303
