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A comparison of a wide-slot and a stacked patch antenna for the purpose of breast cancer detection

Research output: Contribution to journalArticle

Original languageEnglish
Pages665 - 674
Number of pages10
JournalIEEE Transactions on Antennas and Propagation
Journal publication dateMar 2010
Journal issue3
Volume58
DOIs
StatePublished

Abstract

A wide-slot UWB antenna is presented for intended use in the detection scheme being developed at the University of Bristol, based on the principle of synthetically focused UWB radar using a fully populated static array. The antenna's measured and simulated, input and radiation characteristics are presented and compared to an existing, stacked patch antenna that has been designed for the same purpose. The results of this study show that the wide-slot antenna has excellent performance across the required frequency range. Compared to the stacked-patch antenna used in our previous array, the wide-slot antenna can be 3 times smaller (in terms of front surface). The compact nature of the slot antenna means that the detection array can be densely populated. Additionally, this new antenna offers better radiation coverage of the breast. For angles up to 60° away from bore-sight radiated pulses are almost identical (fidelity >95%), whereas for the patch antenna fidelity falls to 58% at the angular extremes. This uniform radiation into the breast should result in focused images with low levels of clutter.

Additional information

Sponsorship: The authors would like to acknowledge K. Stevens for help with the manufacture of the measurement setup and Prof. J. P. McGeehan for the provision of facilities at the Centre for Communications Research, University of Bristol. Terms of use: Copyright © 2010 IEEE. Reprinted from IEEE Transactions on Antennas and Propagation. This material is posted here with permission of the IEEE. Such permission of the IEEE does not in any way imply IEEE endorsement of any of the University of Bristol's products or services. Internal or personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution must be obtained from the IEEE by writing to pubs-permissions@ieee.org. By choosing to view this document, you agree to all provisions of the copyright laws protecting it.

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Research areas

  • breast cancer, microwave radar, ultrawideband (UWB) antennas

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