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Dual-Band Miniaturized Patch Antennas for Microwave Breast Imaging

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4 Author(s)
Al-Joumayly, M.A. ; Dept. of Electr. & Comput. Eng., Univ. of Wisconsin-Madison, Madison, WI, USA ; Aguilar, S.M. ; Behdad, N. ; Hagness, S.C.

We present a miniaturized, dual-band patch antenna array element that is designed for use in a three-dimensional (3-D) microwave tomography system for breast imaging. Dual-band operation is achieved by manipulating the fundamental resonant mode of the patch antenna and one of its higher order modes. Miniaturization and tuning of the resonant frequencies are achieved by loading the antenna with nonradiating slots at strategic locations along the patch. This results in a compact, dual-band antenna with symmetric radiation patterns and similar radiation characteristics at both bands of operation. The performance of the antenna in a biocompatible immersion medium is verified experimentally.

Published in:

Antennas and Wireless Propagation Letters, IEEE  (Volume:9 )