Closely Coupled Multi-Mode Radiators: A New Concept for Improving the Perfomance of Electrically Small Antennas.

摘要

Final performance report of the Young Investigator Program (YIP) project titled Closely coupled multi-mode radiators: A new concept for improving the performance of electrically small antennas is presented in this document. The research conducted in th is project resulted in a number of unique ultra-wideband antenna designs for operation in military communications systems of interest to the U.S. Navy and Marine Corps. Specifically, as part of this project, we developed and experimentally demonstrated a number of UWB antennas that, for a given occupied volume, have the lowest frequencies of operation that are reported to date. Other major findings of this project include the introduction, development, and experimental demonstration of miniaturized, wideband, circularly polarized antennas, low-observable electrically-small antennas that exploit miniaturized-element frequency selective surfaces, antennas with directional radiation patterns in the azimuth plane, and platform-based antennas for wideband HF communications. The findings of this project are expected to advance the state-of-the-art in development of military antennas used for tactical communications systems operating in the HF, VHF, and UHF frequency bands.