Mixer with local oscillator feed-forward and method of mixing signals with local oscillator feed-forward
US8131248B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 2, 2008 |
| Grant date | Mar 6, 2012 |
| Priority date | — |
| Expiry date | Jul 4, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03D7/165
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A feed-forward device is provided for a mixer including a diplexer having a radio frequency port, an intermediate frequency port, and a common port; and a mixing circuit receiving an in-phase local oscillator signal and an out-of-phase local oscillator signal and having an output coupled to the common port of the diplexer. The feed-forward device includes: a first signal sampler having an input adapted to sample the in-phase local oscillator signal and to output a sampled in-phase local oscillator signal; a second signal sampler having an input adapted to sample the out-of-phase local oscillator signal and to output a sampled out-of-phase local oscillator signal; and an arrangement for coupling the sampled in-phase local oscillator signal and the sampled out-of-phase local oscillator signal to the common port of the diplexer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.