Title :
Selective signal transmission to inlaid microcoils by inductive coupling
Author :
Wu, J. ; Bernstein, G.H.
Author_Institution :
Dept. of Electr. Eng., Notre Dame Univ., IN, USA
Abstract :
Inductive links are widely used to power medical implants, but are not suited to transmitting low frequency waveforms. Here, using amplitude modulation, such waveforms are transmitted via an integrated receiving coil and a passive demodulator. An "inlaid electroplating" process is used to fabricate microcoils of small resistance to obtain enhanced output. As our inductive link resonates at a frequency specific to the secondary microcoil, selective signal transmission is demonstrated with frequency-multiplexing input. Further, combining two coils with switching transistors, biphasic pulses are produced at the load, which has potential applications for biomedical electrical stimulations.
Keywords :
bioelectric phenomena; biomedical electrodes; coils; electroplating; frequency division multiplexing; medical signal processing; amplitude modulation; biomedical electrical stimulations; biphasic pulses; frequency multiplexing; inductive coupling; inductive link; inlaid electroplating; inlaid microcoils; integrated receiving coil; passive demodulator; power medical implants; selective signal transmission; switching transistors; Amplitude modulation; Coils; Couplings; Immune system; Implants; Inductance; Lithography; Pulse transformers; Resonant frequency; Signal generators;
Conference_Titel :
TRANSDUCERS, Solid-State Sensors, Actuators and Microsystems, 12th International Conference on, 2003
Conference_Location :
Boston, MA, USA
Print_ISBN :
0-7803-7731-1
DOI :
10.1109/SENSOR.2003.1217110
