Discrete time polyphase mixer
US8478220B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 16, 2011 |
| Grant date | Jul 2, 2013 |
| Priority date | — |
| Expiry date | Sep 21, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03D7/165
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
Embodiments of a radio frequency (RF) circuit provide translational filtering in accordance with an input impedance response that is an impedance image of a reactive circuit impedance response from a polyphase reactive circuit. The RF circuit may include a first mixer circuit that provides a first frequency offset for the impedance image and a second mixer circuit that provides an additional frequency offset. Accordingly, the second mixer circuit may allow for adjustments to a total frequency offset of the impedance image. The second mixer circuit may also be configured so that the impedance image rejects a negative frequency impedance response of the reactive circuit impedance response.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.