A Directional Antenna in a Matching Liquid for Microwave Radar Imaging

Saeed I. Latif; Daniel Flores Tapia; Diego Rodriguez Herrera; Mario Solis Nepote; Stephen Pistorius; Lotfollah Shafai

doi:10.1155/2015/751739

International Journal of Antennas and Propagation (Jan 2015)

A Directional Antenna in a Matching Liquid for Microwave Radar Imaging

Saeed I. Latif,
Daniel Flores Tapia,
Diego Rodriguez Herrera,
Mario Solis Nepote,
Stephen Pistorius,
Lotfollah Shafai

Affiliations

Saeed I. Latif: Department of Electrical and Computer Engineering, University of South Alabama, Mobile, AL 36688, USA
Daniel Flores Tapia: Department of Physics and Astronomy, University of Manitoba, 301 Allen Building, Winnipeg, MB, R3T 2N2, Canada
Diego Rodriguez Herrera: Department of Physics and Astronomy, University of Manitoba, 301 Allen Building, Winnipeg, MB, R3T 2N2, Canada
Mario Solis Nepote: Biomedical Engineering Program, University of Manitoba, E2-390 EITC, Winnipeg, MB, R3T 5V6, Canada
Stephen Pistorius: Department of Physics and Astronomy, University of Manitoba, 301 Allen Building, Winnipeg, MB, R3T 2N2, Canada
Lotfollah Shafai: Department of Electrical and Computer Engineering, University of Manitoba, E2-390 EITC, Winnipeg, MB, R3T 5V6, Canada

DOI: https://doi.org/10.1155/2015/751739
Journal volume & issue: Vol. 2015

Abstract

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The detailed design equations and antenna parameters for a directional antenna for breast imaging are presented in this paper. The antenna was designed so that it could be immersed in canola oil to achieve efficient coupling of the electromagnetic energy to the breast tissue. Ridges were used in the horn antenna to increase the operating bandwidth. The antenna has an exponentially tapered section for impedance matching. The double-ridged horn antenna has a wideband performance from 1.5 GHz to 5 GHz (3.75 GHz or 110% of impedance bandwidth), which is suitable for breast microwave radar imaging. The fabricated antenna was tested and compared with simulated results, and similar bandwidths were obtained. Experiments were conducted on breast phantoms using these antennas, to detect a simulated breast lesion. The reconstructed image from the experiments shows distinguishable tumor responses indicating promising results for successful breast cancer detection.

Published in International Journal of Antennas and Propagation

ISSN: 1687-5869 (Print); 1687-5877 (Online)
Publisher: Hindawi Limited
Country of publisher: United Kingdom
LCC subjects: Technology: Electrical engineering. Electronics. Nuclear engineering; Social Sciences: Transportation and communications: Cellular telephone services industry. Wireless telephone industry
Website: https://onlinelibrary.wiley.com/journal/8039

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