Even-order non-linearity correction feedback for Gilbert style mixers
US6785530B2 · kind B2 · utility
11Cited by
12References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 16, 2001 |
| Grant date | Aug 31, 2004 |
| Priority date | — |
| Expiry date | Nov 28, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B1/28
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
Double balanced mixers having transistor pairs are affected by area mismatches between the transistors. The area mismatches can be represented as a ratio between the mixer core transistors that is directly related to voltage. Thus, an input voltage into one of the mixer core transistors in a transistor pair can compensate for the area mismatch. The compensation is achieved by a voltage track and hold feedback loop to one of the mixer core transistors.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.