Computer-generated hologram and its use for submm-wave antenna measurement

Computer-generated holograms (diffractive elements) can be used for shaping millimeter-wave beams, e.g., for producing a plane wave in a compact space. An amplitude hologram has earlier been demonstrated to be able to form arbitrary beams at 310 GHz and has proven to be a feasible alternative as a f...

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Bibliographic Details
Main Authors: Raisanen, A.V., Ala-Laurinaho, J., Koskinen, T., Lonnqvist, A., Saily, J., Hakli, J., Mallat, J., Viikari, V., Ranvier, S., Tuovinen, J.
Format: Conference Proceeding
Language:English
Subjects:
Antenna measurements
Application software
Diffraction
Instruments
Millimeter wave technology
Reflector antennas
Satellite antennas
Satellite broadcasting
Space technology
Testing
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Summary:Computer-generated holograms (diffractive elements) can be used for shaping millimeter-wave beams, e.g., for producing a plane wave in a compact space. An amplitude hologram has earlier been demonstrated to be able to form arbitrary beams at 310 GHz and has proven to be a feasible alternative as a focusing element in a compact antenna test range (CATR) at mm-wavelengths. It was used successfully for Odin satellite antenna tests at 119 GHz. 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.
ISSN:1095-323X
2996-2358
DOI:10.1109/AERO.2004.1367673