Study of RADC Newport Antenna Test Range: Methods of Reflection Reductions and Increased Frequency Coverage.

摘要

In this report a study of the short and long antenna ranges at the RADC/NEWPORT site is undertaken with the objectives of extending its frequency of operation from 2 GHz down to 200 MHz and from 18 GHz up to 40 GHz. In the report the problem of ground reflections is studied and two solutions are proposed. A short term solution was that of constructing ground fences and a long term solution which consists of processing the signal received using digital signal processing techniques to eliminate the reflections. The ground fences have been constructed and the improvement is documented by measurements before and after the fences were installed. As for the digital signal processing a theoretical study is carried out. A feasibility study of its implementation is recommended. Instrumentation needs for the extension of the site frequency range is also included in the report. (Author)