Low Profile Magneto-Dielectric Ground Plane for Ultra-Wideband Antennas
Faruk Erkmen, Chi-Chih Chen and John L. Volakis
ElectroScience Laboratory, Department of Electrical and Computer Engineering The Ohio State University
Ultra-wideband (UWB) antennas are the key element for modern commercial and military communication systems in order to replace multiple narrowband antennas. UWB antennas with bandwidth exceeding 10:1 or even better have been developed. However, a major problem occurs when these antennas are mounted close to an electrically conducting ground plane for low-profile applications. Although there are narrowband solutions currently available for this problem, we introduce a novel wideband approach in this paper. Such approach utilizes ferromagnetic materials with appropriate electromagnetic properties for controlling the coupling between antenna and ground plane, and thus recovering antenna performance as if the ground plane is absent. EM simulation tools are important in designing such ferromagnetic material treatment due to complex material properties and its dependency on frequency. Radiation enhancements achieved via material treated ground planes will be demonstrated and important design guidelines based on our parametric study will also be presented.
24th Annual Review of Progress in Applied Computational Electromagnetics
2008
April
937-942
Due to copyright restrictions articles are not available for download. They are however indexed on this site and search results will therefore correctly indicate if such terms are present in the articles.
