Title :
Magnetic tuning of a microstrip patch antenna fabricated on a ferrite film
Author :
Rainville, P.J. ; Harackiewicz, F.J.
Author_Institution :
Rome Lab., Hanscom AFB, MA, USA
Abstract :
A square, single-feed patch, fabricated on a ferrite film, that produced orthogonally polarized, well-formed radiation patterns is described. The application of a small in-plane magnetic field tuned the frequency, and hence phase, of one polarization only. Prior work on patch antennas fabricated on bulk ferrite substrates demonstrated magnetic tuning, but only linear polarization was obtained. The results indicate that (1) thin ferrite films, which are monolithically integrable, may be useful for a magnetically tunable antenna, and (2) the radiation polarization of the patch can be varied by the application of a small in-plane magnetic bias field.<>
Keywords :
antenna radiation patterns; electromagnetic wave polarisation; ferrite applications; magnetic thin film devices; microstrip antennas; tuning; ferrite film; in-plane magnetic bias field; magnetic tuning; microstrip patch antenna; microwave antennas; orthogonally polarized; radiation patterns; radiation polarization; single-feed patch; tunable antenna; Dielectric substrates; Ferrite films; Frequency; Magnetic fields; Manufacturing; Microstrip antennas; Patch antennas; Polarization; Saturation magnetization; Tuning;
Journal_Title :
Microwave and Guided Wave Letters, IEEE
