Galvanic isolation of a signal using capacitive coupling embedded within a circuit board
US7483274B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 29, 2005 |
| Grant date | Jan 27, 2009 |
| Priority date | — |
| Expiry date | Jul 26, 2027 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B5/303
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A method and apparatus for providing galvanic isolation for signal communication between two electrical circuits via a capacitive coupler that is constructed from conductive and non-conductive layers of a printed circuit board. The invention can provide at low cost and with substantial galvanic isolation, the communication of data at rates of greater than 1 megabit per second. The galvanic isolation provided by the invention protects against common mode fields as well as limited differential mode fields. The invention makes use of pre-existing layers of a circuit board and does not require many other or expensive electrical components.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.