Title :
Millimeter-wave beam shaping using holograms
Author :
Meltaus, Johanna ; Salo, Janne ; Noponen, Eero ; Salomaa, Martti M. ; Viikari, Ville ; Lönnqvist, Anne ; Koskinen, Tomi ; Säily, Jussi ; Häkli, Janne ; Ala-Laurinaho, Juha ; Mallat, Juha ; Räisänen, Antti V.
Author_Institution :
Mater. Phys. Lab., Helsinki Univ. of Technol., Espoo, Finland
fDate :
4/1/2003 12:00:00 AM
Abstract :
We synthesize amplitude- and phase-type computer-generated holograms (diffractive gratings) for shaping millimeter-wave fields. We design holograms using quasi-optical back-propagation and rigorous optimization methods adopted from diffractive optics. We present experimental results from a plane-wave-generating hologram and a custom-designed field shaper at 310 GHz. Holograms can be applied, e.g., in a compact antenna test range and we propose their use for alignment purposes.
Keywords :
antenna testing; beam steering; computer-generated holography; diffraction gratings; microwave holography; 310 GHz; alignment; amplitude-type computer-generated holograms; compact antenna test range; diffractive gratings; millimeter-wave beam shaping; phase-type computer-generated holograms; plane-wave-generating hologram; quasi-optical back-propagation; rigorous optimization methods; Diffraction gratings; Holographic optical components; Holography; Laboratories; Millimeter wave technology; Optical diffraction; Optical films; Optical scattering; Optical vortices; Testing;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
DOI :
10.1109/TMTT.2003.809679
