Title :
Impedance Matched Ferrite Layers as Ground Plane Treatments to Improve Antenna Wide-Band Performance
Author :
Erkmen, Faruk ; Chen, Chi-Chih ; Volakis, John L.
Author_Institution :
Dept. of Electr. & Comput. Eng., Ohio State Univ., Columbus, OH
Abstract :
In low-profile applications, ground plane backing significantly degrades antenna performance when the electrical height is a small fraction of a wavelength. An approach to suppress the destructive interference from the ground plane reflections is to employ absorbing layers of ferrite materials. In this paper, we introduce a means to also control and utilize the mode excited in these finite ferrite layers to recover antenna performance at ultra/very high frequencies. Experimental verification is provided using commercial ferrite materials.
Keywords :
absorbing media; broadband antennas; ferrites; antenna wideband performance; electrical height; ferrite material absorbing layers; ground plane treatments; impedance matched ferrite layers; interference suppression; Antennas and propagation; Broadband antennas; Dipole antennas; Ferrites; Frequency; Impedance; Interference suppression; Periodic structures; Reflection; Wire; Absorbing media; ground plane; ultrawideband antennas;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
DOI :
10.1109/TAP.2008.2009777
