Analysis of the Feed Absorber Fences in Compact Antenna Test Ranges and their Impact on Quiet Zone Metrics

Advancing 5G Coverage: Novel Methods for Metasurface Characterization and Leaky-Wave Antenna Reconfigurability

“…These fields are next used to reconstruct the plane-wave using the IFR method, and the resulting magnitude and phase of the of ≈ 0.97 dB with no tapering, while the maximum phase ripple is ≈ 10 • . In the typical quietzones, a magnitude tapering of ≈ 0.84 dB with a ripple of ±0.51 dB and phase variations ranging from 1 to 9 • degrees are commonly observed, depending on the setup [19]. With both factors combined, the maximum amplitude variation is typically ≈ 1.5 dB across 30 cm at 1 GHz, whereas the IFR-PW shows a magnitude variation of about 0.97 dB across 12 cm at 30 GHz.…”

“…For a uniform plane-wave excitation, there are several approaches to address this mismatch of source excitation. One is placing the antenna source far away from the MS so that the incident field is approximately a plane wave or using a collimating reflector [17,6] (such as in Compact antenna test ranges (CATR) [18,19]). Another approach uses a lens between the source and the MS [20,21,22].…”