Impedance tuning for termination
US8446169B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 26, 2011 |
| Grant date | May 21, 2013 |
| Priority date | — |
| Expiry date | Aug 26, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L25/0298
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
An embodiment of an impedance adjustment apparatus is disclosed. For this embodiment of an impedance adjustment apparatus, a differential driver circuit has an input port, a first output port, a second output port, a first bias node, and a second bias node. A first impedance-voltage device is coupled to provide a first bias voltage to the first bias node. A second impedance-voltage device is coupled to provide a second bias voltage to the second bias node. A first analog voltage source is coupled to provide a first analog voltage to the first impedance-voltage device, and a second analog voltage source is coupled to provide a second analog voltage to the second impedance-voltage device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.