Unidirectional sampling mixer
US8787863B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 18, 2012 |
| Grant date | Jul 22, 2014 |
| Priority date | — |
| Expiry date | Jan 29, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03D2200/0068
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A unidirectional sampling mixer utilizes a stepped phase modulation to shift the frequency of an RF input signal supplied to an RF input switch. An ordered set of phase shift values to be applied to the RF input signal and a set of times each element of which corresponds to a time at which a phase shift value is be applied to the RF signal are determined. For each phase shift value, a controller controls the RF input switch to select an input of a phase shifting device and controls an RF output switch to select an output of the phasing shifting device. The input and the output of the phase shifting device are selected to apply the phase shift value at its corresponding time to the RF input signal. A frequency shifted signal is supplied to an RF output port from an output of the RF output switch.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.