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An Implantable Planar Dipole Antenna for Wireless MedRadio-Band Biotelemetry Devices

A novel implantable planar dipole antenna for operation in the Medical Device Radiocommunications Services band (401-406 MHz) is proposed. A basic skin-implantable antenna model is initially developed, and then a prototype is fabricated. The dipole antenna exhibits an extremely thin profile and a very small aperture size; antenna physical volume is approximately 18.1 mm 3. Effective size reduction is achieved by optimally canceling its inherent high capacitance through L-shaped reactive loading sections within the antenna structure. As demonstrated, the applied design methodology facilitates planar antenna miniaturization with adequate radiation response (gain, radiation pattern shape, and specific absorption rate). A liquid skin medium is employed to experimentally validate the antenna. Measured and simulated results are in good agreement.