Journal
ELECTRONICS LETTERS
Volume 41, Issue 7, Pages 388-390Publisher
INST ENGINEERING TECHNOLOGY-IET
DOI: 10.1049/el:20057336
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An ultra-wideband dielectric-filled antenna has been designed for the purpose of breast cancer detection. The antenna geometry is a modified version of a slotline bowtie hybrid, which is immersed in a dielectric medium, and fed with an integrated ultra-wideband balun. Simulations were performed on both the balun and the antenna separately. The antenna had a simulated time domain near-field beamwidth of 32 degrees. A return loss of 10 dB was obtained from 2.5 to 9 GHz, and 5 dB from I to 10 GHz. Both bandwidths were slightly smaller than simulated. A prototype was constructed and feasibility tests were performed on tumour models immersed in a breast phantom material. Measurements demonstrate detection of a 7 mm diameter rumour at a depth of 4 cm from the aperture.
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