Title :
Computer-generated holograms for mm- and submm-wave beam shaping
Author :
Raisanen, A.V. ; Meltaus, J. ; Salo, J. ; Koskinen, T. ; Lonnqvist, A. ; Hakli, J. ; Saily, J. ; Ala-Laurinaho, J. ; Mallat, J. ; Noponen, E. ; Salomaa, M.M.
Author_Institution :
MilliLab. Radio Lab., Helsinki Univ. of Technol., Finland
Abstract :
Computer-generated holograms (diffractive elements) can be used for shaping mm-wave beams and for producing complex field configurations. The radio holograms studied here are amplitude holograms. An amplitude hologram has been proven to be a feasible alternative as a focusing element in a compact antenna test range (CATR) at mm-wavelengths. Amplitude holograms have also been demonstrated in other mm- and submm-wave beamshaping applications - e.g., on the creation of nondiffracting radiowave Bessel beams, a radio wave vortex, and also a custom-designed beam pattern.
Keywords :
antenna radiation patterns; antenna testing; beam steering; computer-generated holography; finite difference time-domain analysis; focusing; holographic gratings; millimetre wave devices; submillimetre wave devices; 100 to 310 GHz; CATR focusing elements; FDTD modeling; amplitude holograms; compact antenna test ranges; complex field configuration production; computer-generated holograms; custom-designed beam patterns; diffractive elements; mm-wave beam shaping; mm-wavelengths; nondiffracting radiowave Bessel beams; radio holograms; radio wave vortex/vortices; submm-wave beam shaping; Antennas and propagation; Diffraction gratings; Electromagnetic modeling; Finite difference methods; Iterative methods; Laboratories; Physics computing; Satellite antennas; Strips; Testing;
Conference_Titel :
Infrared and Millimeter Waves, 2002. Conference Digest. Twenty Seventh International Conference on
Conference_Location :
San Diego, CA, USA
Print_ISBN :
0-7803-7423-1
DOI :
10.1109/ICIMW.2002.1076110
