Abstract
In order to adapt to the applications of the wireless capsule endoscope (WCE) system, a wideband implantable antenna is designed. We engrave some slots on both the radiator and the ground plane to miniaturize the size and expand the impedance bandwidth of the antenna. The capacitance loading technique is used to improve the impedance match. The influence of different organs such as the stomach, small intestine, and colon is discussed when the antenna is embedded in the WCE system. Compared to other implantable antennas with similar performance, impedance bandwidth, radiation pattern, and specific absorption rate in one-layer skin phantom model, this design has the best performance. Finally, experiments are carried out on a chicken breast slab to validate our design. Results are shown the proposed antenna available.
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