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

fYear

2014

fDate

14-19 Sept. 2014

Firstpage

1

Lastpage

2

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Infrared, Millimeter, and Terahertz waves (IRMMW-THz), 2014 39th International Conference on

Conference_Location

Tucson, AZ

Type

conf

DOI

10.1109/IRMMW-THz.2014.6956303

Filename

6956303