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Synthesized-reference-wave holography for determining antenna radiation characteristics

2008; Institute of Electrical and Electronics Engineers; Volume: 50; Issue: 5 Linguagem: Inglês

10.1109/map.2008.4674712

1558-4143

Vladimír Schejbal, Viastimil Kovarik, Dušan Čermák,

Antenna Design and Analysis

Synthesized-reference-wave holographic techniques offer relatively simple and cost-effective measurement of antenna radiation characteristics and reconstruction of complex aperture fields using near-field intensity (power) pattern measurement.The near field is over-sampled.The phase is obtained indirectly, using the reference signal shifted linearly with the position of the probe.These methods allow utilization of advantages for probe compensation for near-field amplitude and phase measurements for planar and cylindrical scanning, including accuracy analyses.Descriptions are given of holographic nearfield measurements using probe compensation for planar and cylindrical scanning, and numerical simulations.A com-parison of holographic near-field and far-field measurements with and without probe compensation is presented.