Paper Info
Title
Closed loop inverse load modulation power control by magnetic field diminishment in inductively powered biomedical implants
Abstract
A combination of an on-chip power control and a closed loop power control for inductively powered biomedical implants using inherent inverse load modulation as back channel is presented. Inverse load modulation is realized using an innovative internal on-chip power control. By shorting the secondary receiving coil to ground using varying switching pulse repetition rates the magnetic field is diminished and the load is nearly canceled. This reduces the energy absorbed by the implant and consequently the transmitted power decreases with a slight increase of the voltage amplitude in the primary transmitting coil. The increased amplitude peaks on the transmitter side are measured in order to decrease the on-chip power control state. Finally the transmitting power is adjusted in a way to transmit only sufficient power for chip operation. This reduces the transmitting power. Therefore the power control unit in the implant has to control less excessive power.
Year
DOI
Venue
2014
10.1109/ISCAS.2014.6865459
Circuits and Systems
Keywords
DocType
ISSN
BiCMOS integrated circuits,closed loop systems,coils,magnetic fields,modulation,power control,prosthetics,closed loop power control,inductively powered biomedical implants,internal on-chip power control,inverse load modulation,magnetic field diminishment,primary transmitting coil,secondary receiving coil
Conference
0271-4302
Citations 
PageRank 
References 
0
0.34
3
Authors
4
Name
Order
Citations
PageRank
Christian Brendler100.68
Nasim Pour Aryan2477.67
Viola Rieger332.40
Albrecht Rothermel48117.91