Radio-frequency mixer arrangement
US7218163B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 4, 2004 |
| Grant date | May 15, 2007 |
| Priority date | — |
| Expiry date | Apr 19, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03D2200/0084
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
The present invention relates to a radio-frequency mixer arrangement in which a differential amplifier is connected to an input on a multiplier. The differential amplifier is arranged together with at least one capacitance in the feedback path of an operational amplifier. The at least one capacitance performs the function of an antialiasing filter. The feedback operational amplifier with the design described results in a highly linear output signal given low output noise and a low current requirement. The mixer proposed is particularly suitable for use in vector modulators or polar modulators in transmission paths in mobile radios.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.