Radio frequency interference common mode injection in a C-PHY receiver
US12353350B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 6, 2023 |
| Grant date | Jul 8, 2025 |
| Priority date | — |
| Expiry date | Oct 10, 2043 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H7/427
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
An input buffer includes a pair of input transistors and associated injection circuits. A first input transistor has a source coupled to a first voltage rail through a first current source and a gate coupled to a first wire of a multi-wire serial bus. Three or more resistors in a first injection circuit couple the wires of the serial bus to a first common node, which is coupled to the source of the first input transistor by a first capacitor. A second input transistor has a source coupled to the first voltage rail through a second current source and a gate coupled to a second wire of the serial bus. Three or more resistors in a second injection circuit couple the wires of the multi-wire serial bus to a second common node, which is coupled to the source of the second input transistor by a second capacitor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.