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A wearable UWB antenna is proposed and analyzed in this paper, which is totally fabricated with textile materials, except the feeding connector for testing. By implementing a multilayered structure, the antenna obtains a good matching over the whole UWB band while keeping its low profile. The performance of the antenna is unaffected when worn on the human body due to the shielding by the full ground plane placed under the patch. Besides that, high on-body fidelity and a robust performance are produced when the antenna is studied under several types of deformations.

A low profile dual-band antenna based on the magneto-electric dipole concept is investigated on-body. An efficient space-utilization configuration of the conductive textiles and substrate layers ensured the compactness of the structure for on-body application. The two U slots in the dipole combine the electric and magnetic resonances to produce a dual band behavior and wideband characteristic in each band, as validated via simulations and measurements. Low backward radiations in both the lower and the upper bands are observed, rendering it insensitive to the coupling to the human body. To validate this, the antenna is first simulated in a bent configuration using a simplified, cylindrically-shaped human phantom and was found to be robust. It was then simulated on a detailed voxel model to assess its bent performance. Besides the slightly degraded reflection performance, the studied specific absorption rate (SAR) is proven to be well below the European limit of 2 W/kg.