Dynamic current steering mixer
US7725092B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 6, 2007 |
| Grant date | May 25, 2010 |
| Priority date | — |
| Expiry date | Sep 23, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03D7/1458
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A dynamic current steering mixer. The dynamic current steering mixer comprises a Gilbert cell mixer core, a pair of load devices, a dynamic current steering cell, and a transconductor cell. The Gilbert cell mixer core has first and second nodes, receives a first differential input signal, and provides a differential output signal at the first nodes thereof. The load devices are respectively coupled between the first nodes of the Gilbert cell mixer core and a first fixed voltage. The dynamic current steering cell has third nodes coupled to the second nodes and fourth nodes. The transconductor cell is coupled between the fourth nodes and a second fixed voltage and receives a second differential input signal. The dynamic current steering cell alternately steers current of the transconductor cell to or away from the Gilbert cell mixer core.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.