Summary
International Symposium on Antennas and Propagation
2012
Session Number:1A4
Session:
Number:1A4-2
Non-Foster Enhancements of Electrically Small Antennas
Richard W. Ziolkowski,
pp.-
Publication Date:2012/10/29
Online ISSN:2188-5079
Summary:
Electrically small antennas have gained much attention and have been extensively studied, especially in the last decade. Because of their compact dimensions, they meet the needs for a variety of wireless applications. These include mobile communications and computing platforms, as well as sensor networks. A number of efficient metamaterial-inspired designs have been obtained and validated experimentally. While high efficiencies have been demonstrated, their electrical smallness limits their directivity and bandwidth performance characteristics. In an effort to achieve higher directivity and larger bandwidths , we have investigated how a variety of efficient electrically small antennas can be augmented with non-Foster circuits to overcome the usual efficiency-bandwidth-directivity tradeoffs.