Attenuating common mode noise current in current mirror circuits
US10877503B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 11, 2019 |
| Grant date | Dec 29, 2020 |
| Priority date | — |
| Expiry date | Jun 11, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2203/45508
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
At least some embodiments are directed to a system comprising a capacitor coupled to a voltage supply rail and configured to carry a capacitor current that comprises first and second parts. The capacitor current is an alternating current (AC). A first current mirror component may couple to the capacitor and to the voltage supply rail and is configured to carry the first part of the capacitor current. A second current mirror component couples to the voltage supply rail and is configured to carry the second part of the capacitor current. The second part of the capacitor current is proportionally related to the first part of the capacitor current. A circuit couples to the second current mirror component. The capacitor and the first and second current mirror components are configured to attenuate a common mode noise current flowing to the circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.