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Testing of a 1.5-m reflector antenna at 322 GHz in a CATR based on a hologram

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9 Author(s)
Hakli, J. ; MilliLab, Helsinki Univ. of Technol., Espoo, Finland ; Koskinen, T. ; Lonnqvist, A. ; Saily, J.
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Hologram-based compact antenna test range (CATR) is a potential method for testing large antennas at submillimeter wavelengths. This paper describes testing of a 1.5-m single offset parabolic reflector antenna with a 3-m-diameter hologram-based CATR. This is the first time such a measurement is carried out at submillimeter wavelengths. The antenna tests were done in a CATR that was specifically designed and constructed for these tests. The measured radiation pattern at the frequency of 322 GHz is presented. The measured pattern corresponds reasonably well to the simulated pattern of the antenna. The effect of the quiet-zone field nonidealities on the measurement results and the reasons for the discrepancies in the measured antenna beam are discussed.

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Antennas and Propagation, IEEE Transactions on  (Volume:53 ,  Issue: 10 )