Yang Feng, Shaopeng Pan, Jiawei Li, Pan Chen, Lin Qi, Gaosheng Li
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Design of Ultra-wideband Conformal Capsule Antenna for Wireless Capsule Endoscopy System
The antenna is an important component to realize the wireless communication between the wireless capsule endoscope system inside the human body and the outside world. This paper designs an ultra-wideband conformal capsule antenna with the volume of 18mm3, which uses in wireless capsule endoscopy systems. The antenna is a coplanar waveguide-fed compact planar slotted microstrip antenna, which uses flexible materials to achieve conformal antennas, and is used in the industrial, scientific, and medical frequency bands of 2.45-2.48 GHz (ISM). Under the premise of satisfying radiation safety, while ensuring the performance of the antenna, the ultrawideband operation of the antenna is realized with a bandwidth of 108.9%, and the gain of the antenna at 2.45GHz is −25.4dBi. The research results provide an important reference for the development and application of conformal capsule antennas.
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