Electronically Tunable Miniaturized Antennas on Magnetoelectric Substrates With Enhanced Performance

Author

Yang, Guo-Min ; Xing, X. ; Daigle, A. ; Liu, M. ; Obi, O. ; Wang, J.W. ; Naishadham, K. ; Sun, Nian X.

Author_Institution

Dept. of Electr. & Comput. Eng., Northeastern Univ., Boston, MA

Volume

44

Issue

11

fYear

2008

Firstpage

3091

Lastpage

3094

Abstract

Achieving relative permeability larger than 1 in antenna substrates can lead to antenna miniaturization, enhanced bandwidth, and tunable resonant frequency. Metallic magnetic films and self-biased ferrite films were introduced as a practical means to tune a patch antenna by loading a commercially available substrate in this paper. Novel antenna designs with metallic magnetic films and self-biased NiCo-ferrite films were investigated. Magnetic patch antennas were demonstrated at 2.1 GHz with a tuning resonant frequency range of 5-10 MHz (with the metallic magnetic films) and 7-23 MHz (with self-biased ferrite films). Three different cases of annular ring antennas with NiCo-ferrite films loading were also designed and analyzed. Antennas with self-biased magnetic films loading working at 1.7 GHz with a tuning range of 3-20 MHz were achieved.

Keywords

ferrites; loop antennas; magnetic thin films; microstrip antennas; annular ring antennas; antenna design; antenna miniaturization; electronically tunable miniaturized antennas; magnetic patch antennas; magnetoelectric substrates; metallic magnetic films; relative permeability; self-biased ferrite films; tunable resonant frequency; Annular ring antennas; magnetic antennas; patch antennas; self-biased films;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2008.2003062

Filename

4717617