Admittance, Isolation, and Radiation Patterns of Rectangular Slot Antennas in the Presence of a Simulated Reentry Sheath

摘要

The admittance, isolation, and element radiation patterns of reduced-height rectangular slot antennas in a plasma-clad ground plane were measured and compared with theoretical predictions. The plasma sheath simulates the electromagnetic properties of a high-altitude boundary layer and is produced by pulsed electron beam emission from the ground plane in the presence of a low-pressure gas. (Author)