Design of UWB antenna for wireless capsule endoscopy

In the upcoming era, many people are affected with deadly diseases in the digestive tract, which doctors are not able to diagnose easily. Wireless capsule endoscopy is a new, modern technique for diagnosing diseases like Crohn's disease, GI bleeding, abdominal pain, Screening for tumors, polyps, etc.., In this paper, a miniaturized ultra wideband antenna(3.1–10.6Ghz) is designed, simulated and analyzed for wireless capsule endoscopy. FR4 Epoxy is the substrate used for antenna. The antenna was simulated using the 15.0. ANSYS HFSS software and the gain of the antenna at 8.5 GHz is –23.93db. The proposed antenna has dimensions of (7.75mmx28.4mmx1mm) and the radiation pattern is omnidirectional with a −10 dB return loss and a resonance frequency of 8.5 GHz. The SAR value is also at a optimum level to ensure patient safety.