volume | PIER Journals

Abstract

Early detection of breast tumour is crucial for reducing the likelihood of mastectomy. To monitor the dielectric changes in breast tissue caused by the formation of tumorous cells, a novel biocompatible implantable antenna sensor is proposed. This flexible implant, measuring just 5 mm × 5 mm × 0.25 mm, operates in the ISM band at 2.45 GHz for real-time breast tumour detection. It is wirelessly powered via Wireless Power Transfer (WPT) operating in the mid-band range of 1.2-1.4 GHz. The antenna achieves an ultra-compact volume of 12.5 mm³ through closed-loop structures and meandered strips that enhance radiation efficiency. Inside abnormal breast tissue with a relative permittivity (ε_r) of 52.7, the antenna demonstrates a reflection coefficient of -17 dB and offers a -10 dB bandwidth of 330 MHz. The sensor is activated when the tissue permittivity rises above 15, achieving a maximum gain of -10 dBi. The antenna has been fabricated, and the simulated results have been validated in-vivo. This design enables proactive detection of tumour cell formation within breast tissue, allowing treatment before it spreads. It is particularly suitable for individuals with a genetic predisposition to breast tumour, offering continuous monitoring for early intervention.

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Dr. Samuelraj Chrysolite

Ms. Suresh Dhanu Shree

Dr. Guruvayurappan Venika