Abstract
A Compact CPW fed wearable dual-band dual-polarized antenna is proposed in this paper. The antenna is linearly polarized (LP) at 2.45 GHz and circularly polarized (CP) at 5.8 GHz. The presented antenna with the dimensions of 15 mm × 36 mm × 0.80 mm (0.12λ <inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">0</inf> ×0.29λ <inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">0</inf> ×0.006λ <inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">0</inf> at lower frequency) was tested both in free space and on-body environment, showing a high performance. The on-body antenna was able to attain a maximum peak gain of 5.72 dBi, a wide impedance bandwidth of 21%, and an ultra wide axial ratio bandwidth. The antenna was fabricated and characterized, and the simulated as well as measured results are found to be in good agreement. Moreover, for wearable safety validation, the Specific Absorption Rate (SAR) was also investigated. These merit features make the proposed antenna suitable to wearable medical applications.
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