MIMO antennas for capsule endoscope systems

We describe a novel two-port MIMO antenna that is intended for use in wireless capsule endoscope systems. The purpose of the MIMO antenna is to enable increases in data transmission rates, compared to existing single antenna systems, to support the transmission of high resolution images from the capsule. The proposed MIMO antenna consists of a small magnetic loop antenna with horizontal polarization and a conformal meandered dipole antenna with vertically polarization and can be constructed within a capsule endoscope system. By using polarization diversity, the antennas maintain good isolation even within the limited available space in the capsule. Simulation and experimental results are provided.

[1]  Kihyun Kim,et al.  A Wideband Spiral Antenna for Ingestible Capsule Endoscope Systems: Experimental Results in a Human Phantom and a Pig , 2011, IEEE Transactions on Biomedical Engineering.

[2]  Young Joong Yoon,et al.  The helical antenna for the capsule endoscope , 2005, 2005 IEEE Antennas and Propagation Society International Symposium.

[3]  A. K. Skrivervik,et al.  Design, Realization and Measurements of a Miniature Antenna for Implantable Wireless Communication Systems , 2011, IEEE Transactions on Antennas and Propagation.

[4]  Young Joong Yoon,et al.  A conical spiral antenna for wideband capsule endoscope system , 2008, 2008 IEEE Antennas and Propagation Society International Symposium.

[5]  S. Nam,et al.  Outer-Wall Loop Antenna for Ultrawideband Capsule Endoscope System , 2010, IEEE Antennas and Wireless Propagation Letters.

[6]  P. Swain,et al.  Wireless capsule endoscopy. , 2002, The Israel Medical Association journal : IMAJ.

[7]  M.R. Yuce,et al.  Dielectric Loaded Impedance Matching for Wideband Implanted Antennas , 2009, IEEE Transactions on Microwave Theory and Techniques.

[8]  G. Iddan,et al.  Wireless capsule endoscopy , 2003, Gut.

[9]  Y. Rahmat-Samii,et al.  Conformal Ingestible Capsule Antenna: A Novel Chandelier Meandered Design , 2009, IEEE Transactions on Antennas and Propagation.