Title :
Recent results on using computer-generated submm-wave holograms for antenna and RCS measurements
Author :
Raisanen, Antti V. ; Koskinen, Tomi ; Lonnqvist, A. ; Hakli, J. ; Ala-Laurinaho, Juha ; Mallat, Juha ; Saily, Jussi
Author_Institution :
MilliLab, Helsinki Univ. of Technol., Finland
Abstract :
Computer-generated holograms (diffractive elements) can be used for shaping submillimeter-wave beams, e.g., for producing a plane wave in a compact space. An amplitude hologram has proved to be a feasible alternative as a focusing element in a compact antenna test range (CATR) at submm-wavelengths. In a recent study, we have designed and constructed a compact antenna test range for 322 GHz and measured the ADMIRALS representative test object, which is a 1.5-meter offset paraboloid antenna. In another study, the feasibility of a phase hologram based RCS (radar cross section) range has been verified with simple test objects.
Keywords :
antenna radiation patterns; antenna testing; beam steering; computer-generated holography; finite difference time-domain analysis; focusing; holographic gratings; submillimetre wave devices; 1.5 m; 322 GHz; amplitude hologram; antenna; compact antenna test range; diffractive elements; feasibility; focusing element; offset paraboloid antenna; phase hologram; plane wave; radar cross section measurements; shaping submillimeter wave beams; Antenna measurements; Copper; Diffraction; Radar cross section; Reflector antennas; Satellite antennas; Space technology; Submillimeter wave technology; Testing; Wavelength measurement;
Conference_Titel :
Physics and Engineering of Microwaves, Millimeter, and Submillimeter Waves, 2004. MSMW 04. The Fifth International Kharkov Symposium on
Print_ISBN :
0-7803-8411-3
DOI :
10.1109/MSMW.2004.1345781
