Transcutaneous Transmission of Digital Data and Energy in a Cochlear Prosthesis System
| Autor: | Zierhofer Mc, Hochmair Es |
|---|---|
| Rok vydání: | 1992 |
| Předmět: |
Computer science
business.industry Amplifier 030232 urology & nephrology Biomedical Engineering Electrical engineering Medicine (miscellaneous) Bioengineering General Medicine 030204 cardiovascular system & hematology Amplitude-shift keying Biomaterials Synchronization (alternating current) 03 medical and health sciences 0302 clinical medicine Transmission (telecommunications) Electromagnetic coil RLC circuit business Biomedical engineering Data transmission Voltage |
| Zdroj: | The International Journal of Artificial Organs. 15:378-382 |
| ISSN: | 1724-6040 0391-3988 |
| DOI: | 10.1177/039139889201500612 |
| Popis: | This paper describes the inductive power and data link employed in the CAP Cochlear Prosthesis System (CAP stands for Combined Analog and Pulsative Stimulation Strategy). The inductive link consisting of a parallel-tuned receiver resonant circuit weakly coupled to a series-tuned transmitter resonant circuit, is driven by a self-oscillating class-E-tuned power amplifier. The class-E concept allows coupling-insensitive high-efficency transcutaneous transmission of power. In the CAP implant, variations of the coil distance within a range of 0 to 9 mm result in changes of the implant supply voltage which are lower than 10%. Within this coil distance range, the mean overall efficiency is 49%. In view of the excellent switching properties of the class-E tuned power oscillator, a practical scheme for data transmission is ASK (Amplitude Shift Keying). To ensure constant energy flow and easy synchronization of the bitstream in the implant, a self-clocking bit format is employed. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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