![]() We present the reflection, radiation, and scattering properties of the electromagnetic pulse radiated by the antenna element within a homogeneous, layered half-space model of the human breast and the polarization and frequency-response characteristics of generic tumor shapes. The discussion concentrates on the design of a single resistively loaded bowtie antenna element of a proposed confocal sensor array. In this paper, we present the methodology and initial results of three-dimensional (3-D) finite-difference time-domain (FDTD) simulations. N2 - We are investigating a new ultrawide-band (UWB) microwave radar technology to detect and image early-stage malignant breast tumors that are often invisible to X rays. Bridges is with Interstitial, Inc., Park Ridge, IL 60068 USA. Taflove is with the Department of Electrical and Computer Engineering, McCormick School of Engineering and Applied Science, Northwestern University, Evanston, IL 60208 USA. ![]() Hagness is with the Department of Electrical and Computer Engineering, University of Wisconsin-Madison, Madison, WI 53706 USA. Computing resources were provided by Cray Research, Inc. This work was supported in part by the Small Business Innovative Research Grant 1-R43-CA67598-D1A2 from the National Institute of Health and by internal funding from Interstitial, Inc. Manuscript received Jrevised December 2, 1998. T1 - Three-dimensional FDTD analysis of a pulsed microwave confocal system for breast cancer detection ![]()
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