Computer-generated holograms can be used as collimating elements in
compact antenna test ranges (CATRs). Recently, a 1.5 m parabolic
antenna, the ADMIRALS representative test object (RTO), was tested at
322 GHz using a hologram-based CATR that was built specifically for
these tests. The construction of the compact range is discussed in this
paper. A 3 m hologram was used to realize a 1.8 m diameter quiet zone.
The measured quiet-zone field amplitude and phase and the measured
H-plane radiation pattern cut of the representative test object are
presented. The measured -3 dB beam width of the antenna was 0.050º in the H plane.
- antenna measurement
- satellite antennas
- submillimeter waves