Efficient and fast-switching telemetry transmitter
US4453162A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 10, 1982 |
| Grant date | Jun 5, 1984 |
| Priority date | — |
| Expiry date | May 10, 2002 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S128/903
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A transmitter for a medical prosthesis which is highly efficient, and also permits rapid starting and stopping so that the same coil can be used for both transmission and reception without undue delays between the two modes of operation. During transmission, a tuned circuit, consisting of the coil and a capacitor, is pumped at a frequency equal to the resonant frequency. Transmission is concluded when almost all of the energy in the tuned circuit is in the form of a voltage across the capacitor and when the current through the inductor is approximately zero. This allows the inductor to be used immediately for reception. At the start of the next transmission cycle, the voltage which is maintained across the capacitor is used to initially energize the tuned circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.