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A Circularly Polarized Quad-Band Wearable Textile Antenna Integrated with Triple Band AMC Reflector for WBAN Applications

By Anil Badisa, Boddapati Taraka Madhav, Kantamaneni Srilatha, Myla Chimpiri Rao, and Sudipta Das
Progress In Electromagnetics Research C, Vol. 121, 1-18, 2022


A quad-band (3.5, 5.8, 7.5 & 8.08 GHz), low profile, low Specific Absorption rate (SAR), and circularly polarized (3.5, 7.5, 8.08 GHz) wearable textile antenna (50x30x1 mm3) integrated with a triple-band zero reflection phase Artificial Magnetic Conductor (AMC) surface is presented. The designed standalone antenna exhibits low SAR with 10 mm separation for 0.5 W input power and radiation performance with a gain of >5 dB and Front to Back Ratio (FBR) (<10 dB) at all operating frequencies. The AMC unit-cell is synthesized using PDMS (Polydimethylsiloxane) with footprint of 20×20×1 mm3 to operating at 3.5, 7.5, and 8.08 GHz respectively with in-phase reflection. The designed 3×3 AMC reflector is integrated to improve the radiation performance of the designed antenna with gain to >7 dB, FBR to >10 dB, and withstanding low SAR at increased input power compatibility at separation (d=3 mm) from the body surface. The designed AMC transforms the radiation pattern from omnidirectional to directional with improved FBR, reduced back radiation with low SAR (<0.504 W/kg). The proposed AMC integrated antenna also providing mechanical feasibility in terms of handling the frequency detuning due to bending and the human-body loading feature makes it suitable for wireless body area networks (WBAN) applications.


Anil Badisa, Boddapati Taraka Madhav, Kantamaneni Srilatha, Myla Chimpiri Rao, and Sudipta Das, "A Circularly Polarized Quad-Band Wearable Textile Antenna Integrated with Triple Band AMC Reflector for WBAN Applications," Progress In Electromagnetics Research C, Vol. 121, 1-18, 2022.


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