Using hardware gating to improve antenna gain measurements in compact antenna range

Results are presented for antenna gain measurements in a compact antenna ra nge at a frequency below the minimum specified operating frequency of the r ange. Hardware gating is used to reduce clutter or unwanted scattering from the backlobe of the feed and the walls of the chamber. Measured time domai n data are presented which prove that these stray signals can. be eliminate d from the incident field in the test zone, and frequency data are presente d to show the improvement in measured antenna gain.