Printed Antennas Tuned by Transversely Magnetized Ferrite Operating at a Novel Resonant Mode

Abstract

The excitation of a novel single mode in the negative µ eff area is studied for rectangular patch antenna printed on magnetized ferrite substrates or tuned by a ferrite inclusion. In all cases the DC magnetic field is considered perpendicular to the substrate plane. The ferrite inclusion-post shape is considered either cylindrical or rectangular. Numerical simulation results reveal the existence of this novel resonating mode inside the negative µ eff area for both the rectangular microstrip patch printed on ferrite substrate or tuned by a rectangular ferrite post. Also, the input impedance characteristics of these patch antennas are studied.

Research of the WIFI/WIMAX patch type antenna on varying embedded material’s dimensions

“…This feature allows to change the properties of the antenna in real time. For example, authors in [25,26] have placed the small layer of ferrite under the antenna conductor. The incorporation of ferrite allowed the authors to linearly control the resonance frequency [26].…”

“…For example, authors in [25,26] have placed the small layer of ferrite under the antenna conductor. The incorporation of ferrite allowed the authors to linearly control the resonance frequency [26]. In addition, it has been observed that the antenna operates in a circular polarization manner.…”