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Wideband microstrip patch antenna design for breast cancer tumour detection

Wideband microstrip patch antenna design for breast cancer tumour detection,10.1049/iet-map:20050189,Iet Microwaves Antennas & Propagation,R. Nilavala

Wideband microstrip patch antenna design for breast cancer tumour detection   (Citations: 29)
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A patch antenna is presented which has been designed to radiate into human breast tissue. The antenna is shown by means of simulation and practical measurement to possess a wide input bandwidth, stable radiation patterns and a good front-to-back ratio. Consideration is also given to its ability to radiate a pulse, and in this respect it is also found to be suitable for the proposed application. Microwave detection of breast tumours is a non-ionising and indeed potentially low- cost alternative. The high contrast between the dielectric properties of a malignant tumour and the normal breast should manifest itself in terms of lower numbers of missed-detections and false-positives. This potential has lead to the exploration of detection techniques based on microwave-radar by a number of groups around the world (2, 3). Research at Bristol employs a post reception synthetically focussed detection method originally developed for landmine detection (4, 5). All elements of an antenna array transmit a broadband signal in turn, the elements sharing a field of view with the current transmit element then record the received signal. By predicting the path delay between the transmit and receive antennas via any desired point in the breast, it is then possible to extract and time-align all the signals from that point. Repeated for all points in the breast, this yields a 3D image in which the distinct dielectric properties of malignant tissue are potentially visible.
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