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A compact -shape with a double L-strips planar inverted-F antenna (PIFA) is proposed for implantable biotelemetry in the Medical Implant Communication Services band (MICS band). The antenna occupies a volume of only 643 mm3 (22.5 22.5 1.27 mm), operating frequency at 402 MHz. Utilising the -shape with the double L-strips PIFA structure can excite dual-resonate frequencies that control the dual-resonant...
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