Abstract

This paper proposes and compares three different kinds of implanted antenna designs operating in ultra-wide band (UWB) low band 3.1--4.8 GHz to meet the demand of deep implantation and larger bandwidth for medical wireless capsule endoscope (WCE) application. The proposed antennas can be accommodated in the capsule dome and are characterized by light weight, low profile, low cost, small size. Antenna characteristics are compared in terms of input impedance matching, impedance bandwidth, axial ratio, radiation power, front-to-back ratio, peak gain, as well as near-field E field. Measurement results will be shown in presentation also with different TX orientations and receiving antennas.

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