Design and Implementation of the RF Systems for Bi-directional Wireless Capsule Endoscopes

  • Moon, Yeon-Kwan (The School of Electrical Engineering and Computer Science, Kyungpook National University) ;
  • Lee, Jyung-Hyun (The School of Electrical Engineering and Computer Science, Kyungpook National University) ;
  • Park, Hee-Joon (The School of Medicine, Keimyung University) ;
  • Lee, Ju-Gab (The School of Electrical Engineering and Computer Science, Kyungpook National University) ;
  • Ryu, Jae-Jong (The School of Electrical Engineering and Computer Science, Kyungpook National University) ;
  • Lee, Wu-Seong (The School of Electrical Engineering and Computer Science, Kyungpook National University) ;
  • Woo, Sang-Hyo (The School of Electrical Engineering and Computer Science, Kyungpook National University) ;
  • Won, Chul-Ho (The school of computer control and electrical engineering, Kyungil University) ;
  • Cho, Jin-Ho (The School of Electrical Engineering and Computer Science, Kyungpook National University) ;
  • Choi, Hyun-Chul (The School of Electrical Engineering and Computer Science, Kyungpook National University)
  • Published : 2006.12.30

Abstract

This paper explains that the RF systems for hi-directional wireless capsule endoscopes were designed and implemented. The designed RF systems for a capsule endoscope can transmit the images of intestines from the inside to the outside of a body and the behavior of the capsules can be controlled by an external controller simultaneously. The hi-directional wireless capsule endoscope consists of a CMOS image sensor, FPGA, LED, battery, DC to DC Converter, transmitter, receiver, and antennas. The transmitter and receiver which were used in the hi-directional capsule endoscope, were designed and fabricated with $10mm(diameter){\times}3.2mm(thickness)$ dimensions taking into the MPE, power consumption, system size, signal to noise ratio and modulation method. The RF systems designed and implemented for the hi-directional wireless capsule endoscopes system were verified by in-vivo experiments. As a result, the RF systems for the hi-directional wireless capsule endoscopes satisfied the design specifications.

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