Bending and On-Arm Effects on a Wearable Antenna for 2.45 GHz Body Area Network


3 types of versatile textile antennas for 2.45 GHz body space network (BAN) are compared during this letter. Two varieties of conducting materials are used to create radiation patch and ground plane; they're referred to as copper foil tape (CFT, 0.05 mm thickness) and Shieldex (SH, 0.thirteen mm thickness, 0.009 Ohm surface resistivity). The substrate is a thin felt with relative permittivity of 1.a pair of and therefore the thickness of 2 mm. So as to satisfy these requirements of little frequency shifting when the antenna is bent and placed on human body, 2 shorting probes are used to attach the radiation patch and ground plane. Compared to the antenna while not shorting probes, the size of proposed antenna is reduced from ninety six ×47 to 70 ×25 mm2, and also the measured minimum worth of S11 in free house is additionally decreased from -fourteen.fifty nine to -thirty three.thirty dB. Furthermore, an antenna with smaller size of 46 ×twenty five mm2 is designed by modifying the proposed structure, and it will act as a wearable antenna also.

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