Summary
International Symposium on Antennas and Propagation
2012
Session Number:2E3
Session:
Number:2E3-2
Dual Layer UWB Dielectric Probe for Bistatic Breast Cancer Detection System
Laxmikant Minz,
pp.-
Publication Date:2012/10/29
Online ISSN:2188-5079
Summary:
Early stage detection is the key for reducing breast cancer mortality. Microwave imaging is now emerging as a viable alternative to X-ray but designing an antenna for microwave imaging has been a challenge for researcher. In this paper a cylindrical shape two layer dielectric antenna with tapering at both ends is proposed which meets requirements of being wideband, having small aperture, concentrated near field distribution, operating at higher frequencies, low mutual coupling and compact in size. The designed probe has wide operational bandwidth (2-6GHz) and low mutual coupling; S21 is below 20dB with separation of only 6cm between two probes. The probe will have higher sensitivity to small tumour and better spatial resolution because it operates at higher frequencies and has concentrated narrow field distribution at the aperture. The dielectric material of the two layer dielectric probe (??r1= 18, ??r2 = 14) has been chosen such that the probe can operate from 2GHz to 6 GHz and can match with the breast material, so that coupling liquid, which is commonly used in MT breast cancer detection system for matching antennas with the human breast, can be eliminated. The bio medical application, advantage, description, simulation and measured result of the designed dual layer dielectric probe are discussed in the paper.