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International Journal of Antennas and Propagation
Volume 2008, Article ID 167980, 6 pages
Application Article

A 31.5 GHz Patch Antenna Design for Medical Implants

1Antennas and Electromagnetics Group, Electrical Engineering Department, Queen Mary, University of London, London E14AH, UK
2Electrical Engineering Department, COMSATS Institute of Information Technology, Plot 30, Sector H8-1, Islamabad, Pakistan

Received 7 November 2007; Revised 29 March 2008; Accepted 17 July 2008

Academic Editor: Tamer Ibrahim

Copyright © 2008 Yasir Ahmed et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


We have proposed a 31.5 GHz patch antenna for medical implants. The design is based on the transmission line model and is simulated in CST. The patch antenna performs reasonably well in terms of return loss and radiation efficiency. However, the most attractive feature of this design is its form factor. Typical antennas designed for the microwave range are quite large in size, which makes them unsuitable for implants. The proposed design is much smaller in size but still retains the essential characteristics for reliable communication.