Title :
Ultrasonic Power and Data Link for Wireless Implantable Applications
Author :
Arra, Satu ; Leskinen, Jarkko ; Heikkilä, Janne ; Vanhala, Jukka
Author_Institution :
Dept. of Electr. Eng., Tampere Univ. of Technol.
Abstract :
Wireless implantable devices revolutionize the field of biomedical engineering as soon as satisfactory power supplies are conceived. This paper presents a novel ultrasound-based method for powering a battery-free electrical implant. Contrary to the commonly used RF and inductive methods, ultrasonic power transmission helps to avoid problems with electromagnetic coupling and offers for use a selection of data frequencies not limited by national regulations. The proof-of-concept data and power link is based on piezoelectric crystals. Measurements carried out in degassed water brought perspective to the feasibility of an ultrasonic link. Efficiencies of 21-35 % at distances between 5 mm and 105 mm were achieved
Keywords :
biomedical engineering; prosthetics; ultrasonic applications; ultrasonic devices; 5 to 105 mm; battery-free electrical implant; biomedical engineering; data frequency; data link; degassed water; piezoelectric crystal; power link; ultrasonic link; ultrasonic power transmission; ultrasound-based method; wireless implantable application; wireless implantable device; Biomedical engineering; Biomedical measurements; Crystals; Electromagnetic coupling; Implants; Power supplies; Power transmission; Radio frequency; Ultrasonic imaging; Ultrasonic variables measurement;
Conference_Titel :
Wireless Pervasive Computing, 2007. ISWPC '07. 2nd International Symposium on
Conference_Location :
San Juan
Print_ISBN :
1-4244-0523-8
Electronic_ISBN :
1-4244-0523-8
DOI :
10.1109/ISWPC.2007.342668
