[KSCI] Korea Science Citation Index Service

http://dx.doi.org/10.9718/JBER.2008.29.3.187

Design of Two-Dimensional Lateral Antenna for Wireless Power Transmission to In Vivo Robotic Capsule

Kim, Jong-Dae (Division of Information Engineering & Telecommunications, Hallym University)
Lee, Seon-Woo (Division of Information Engineering & Telecommunications, Hallym University)
Ryu, Mun-Ho (Division of Bionics and Bioinformatics, Chonbuk National University)
Kim, Jong-Won (Biomedlab Co.)

Publication Information

Journal of Biomedical Engineering Research / v.29, no.3, 2008 , pp. 187-190 More about this Journal

Abstract

This paper presents two dimensional receiving coils to provide hundreds of milli-watt power via inductive link to in vivo robotic capsules, whose orientation are practically undetermined. The wireless power transmission system consists of a transmitter powered by class E power amplifier, and a receiver with three dimensional antenna, rectifier, and voltage regulator. As the 2D lateral antenna construction is more critical for the receiving antenna, two types of 2D antennas are introduced and evaluated by theoretic and experimental analyses. Experimental results verifies that the cross-type construction show better directional performance for receiving power than the cylindrical one for the 2D antenna. The former could deliver the power homogeneously regardless of its orientation, with less than 20 % of variation from the possible maximum power.

Keywords

wireless power transmission; in vivo robotic capsule; inductive link; two-dimensional lateral antenna;

Citations & Related Records

Reference

1	B. Kim , S. Lee, J.H. Park, and J. Park, 'Design and Fabrication of a Locomotive Mechanism for Capsule-Type Endoscopes Using Shape Memory Alloys (SMAs),' IEEE/ASME Trans. Mechatronics vol. 10, no. 1, pp. 77-86, Feb. 2005 DOI ScienceOn
2	A. Menciassi, et al., ' Locomotion of a Legged Capsule in the Gastrointestinal Tract: Theoretical Study and Preliminary Technological Results,' in Proc. of the 26th Annual International Conference of the IEEE EMBS, San Francisco, USA:2767-2770, Sept. 2004
3	J. Ebert and M. Kazimierczuk, 'Class E High-Efficiency Tuned Power Oscillator,' IEEE J. Solid-State Circuits, vol.SC-16, no. 2, pp. 62-66, April 1981
4	G. Meron, 'The Development of the Swallowable Video Capsule (M2A),' Gastrointestinal Endoscopy vol. 6, pp.817-8199, 2000
5	PillCam Capsule Endoscope, Given Imaging Ltd., [Online]. Available: http://www.givenimaging.com/
6	G. Iddan, G. Meron, A. Glukhovsky and P. Swain, 'Wireless capsule endoscopy,' Nature, vol. 405, pp. 717, 2000 DOI ScienceOn
7	J.D. Kim, M. Ryu, H.U. Chin, and J. Kim 'Impedance matching by series condensers for power receivers of in vivo robotic capsules,' Electronics Letters, vol. 42, no. 14, pp.792-793, 2006 DOI ScienceOn
8	W. Heetderks, 'RF powering of Millimeter- and Submillimeter- Sized Neural Prosthetic Implants,' IEEE Trans. Biomed. Eng. , vol. 35, pp. 323-327, May 1988 DOI ScienceOn
9	R. Lenaerts and R. Puers, 'An inductive power link for a wireless endoscope. Biosens Bioeletron. vol. 22, no. 7, pp. 1390-1395, 2007 DOI ScienceOn
10	Norika3, RF systems lab., [Online]. Available: http://www. rfnorika.com/