Ingestible Antenna at Inner-Wall of Capsule for Capsule Endoscopy

Abstract

Wireless Capsule Endoscopy overcomes various limitations of ordinary endoscopy system including irritating wire and inability to diagnose complicated parts of intestine. Antenna is the main component that removes the hassle of wire. This paper represents the design and miniaturization of a patch antenna for capsule endoscopy with a resonance frequency in the MICS (402–405 MHz) band. The length and diameter of designed antenna are 28.47 mm and 12.45 mm respectively, resulting in a total volume of 4.493 cubic centimeters. The maximum specific absorption rate of this antenna is measured to be 0.0082 WIKg inside human phantom stomach.