Title :
RF transmission power loss variation with abdominal tissues thicknesses for ingestible source
Author :
Chee Wee Kim ; See, Terence Shie Ping
Author_Institution :
Inst. for Infocomm Res., Singapore, Singapore
Abstract :
This paper presents the investigation of the variation in RF (radio frequency) transmission power loss at 403 MHz and 923 MHz due to different tissue thicknesses using a layered planar tissue model of skin, subcutaneous fat, abdomen muscle, visceral fat and small intestine. The generalized transmission coefficient is used to calculate the transmission power loss of various tissue thickness combinations that are based on medical findings of human abdomen composition. The calculations show large transmission power loss variations (up to 10 dB). The effect of visceral fat thickness variation is the largest. The results are useful for the design of wireless communications module of an ingestible device, e.g. capsule endoscope.
Keywords :
bioelectric phenomena; biological tissues; biomagnetism; electromagnetic wave transmission; endoscopes; wireless channels; wireless sensor networks; RF transmission power loss variation; abdomen muscle; abdominal tissues thickness; capsule endoscope; frequency 403 MHz; frequency 923 MHz; human abdomen composition; ingestible device; ingestible source; layered planar tissue model; skin; small intestine; subcutaneous fat; visceral fat thickness variation; wireless communication module; Endoscopes; Humans; Intestines; Muscles; Propagation losses; Radio frequency; Skin; Microwave propagation; biomedical telemetry; numerical phantom;
Conference_Titel :
e-Health Networking Applications and Services (Healthcom), 2011 13th IEEE International Conference on
Conference_Location :
Columbia, MO
Print_ISBN :
978-1-61284-695-8
Electronic_ISBN :
978-1-61284-696-5
DOI :
10.1109/HEALTH.2011.6026766
