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Design of UWB Antenna for the External Receiver of Capsule Endoscopy  

Kim Hong-Seok (Department of Electrical & Computer Engineering, University of Seoul)
Oh Min-Seok (Handset R&D Center, LG Electronics Mobile Communication Company)
Cheon Chang-Yul (Department of Electrical & Computer Engineering, University of Seoul)
Publication Information
The Journal of Korean Institute of Electromagnetic Engineering and Science / v.16, no.8, 2005 , pp. 790-796 More about this Journal
Abstract
In order to accomplish a wireless communication of capsule endoscopy, an environment study in the human body and receiving antenna design have been performed. The proposed antenna is the loop antenna designed to minimize the propagation loss in multi-loss layer such as the human body and utilize the magnetic field. Considering the propagation loss in the human body, the frequency range is from 400 MHz to 500 MHz. Acorrrding to the FCC regulations, the permittivity and conductivity for each human tissue were extracted. We set up an equivalent model and make an aqueous solution which is replaced with the human body. Due to movement of capsule in the human body which propagation loss is extremly severe, an array antenna is required. Irrespective of the location of transmission antenna transmitting a signal of 1 mW, we confirme what it is possible for the enough signal detection as the average signal level of array antenna is -60 dBm.
Keywords
Capsule Endoscopy; Propagation Loss; Aqueous Solution; Array Antenna; Signal Level;
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