Capacitively Loaded Circularly Polarized Implantable Patch Antenna for ISM Band Biomedical Applications
作者： Changrong Liu , Yong-Xin Guo , Shaoqiu Xiao
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摘要: A single-fed miniaturized circularly polarized microstrip patch antenna is designed and experimentally demonstrated for industrial-scientific-medical (2.4-2.48 GHz) biomedical applications. The proposed by utilizing the capacitive loading on radiator. Compared with initial topology of antenna, so-called square a center-square slot, method has advantage good size reduction polarization purity. footprint 10×10×1.27 mm3. simulated impedance, axial ratio, radiation pattern are studied compared in two simulation models: cubic skin phantom Gustav voxel human body. effect different body phantoms discussed to evaluate sensitivity antenna. coaxial cable also discussed. Two typical approaches address biocompatibility issue practical applications reported as well. measured impedance bandwidths 7.7% 10.2%, respectively. performance communication link between implanted CP external presented.
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