Design and Optimization of a Dual-Port UWB Implantable Antenna for Biomedical Applications
DOI:
https://doi.org/10.15662/IJEETR.2026.0802103Keywords:
Implantable antenna, Ultra-wideband (UWB), Dual-port antenna, Biomedical telemetry, WBANAbstract
This paper presents a compact dual-port ultra-wideband (UWB) implantable antenna designed for biomedical telemetry and wireless body area network (WBAN) applications. The proposed antenna is realized on an FR4 substrate with a relative permittivity of εr = 4.4 and occupies a compact volume of 13.75 × 17.25 × 1.6 mm³. A seamless circular geometric pattern is introduced on the radiating patch to enhance impedance bandwidth, current distribution, and radiation efficiency while maintaining compactness. The dual-port configuration supports simultaneous transmission and reception with high isolation. The antenna performance is evaluated under two different biological conditions, namely with and without a fat-equivalent substrate. Simulation results demonstrate good impedance matching, strong port isolation, acceptable voltage standing wave ratio (VSWR), and stable operation in lossy tissue environments, confirming the suitability of the proposed antenna for implantable biomedical communication systems
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