Automated methods for suppression of spurious signals
US9874640B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 15, 2014 |
| Grant date | Jan 23, 2018 |
| Priority date | — |
| Expiry date | Jan 22, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S19/23
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An automated method is provided for suppressing spurious signals in a direct digital synthesized signal. To determine magnitudes of local oscillator (“LO”) feedthrough and image frequency signal components, a digitally synthesized RF signal is digitally analyzed. To reduce the magnitude of the LO feedthrough signal component, one or more first parameters of at least one digital-to-analog converter is automatically adjusted using a first search pattern. To reduce the magnitude of image frequency signal component, at least one second parameter of the at least one digital-to-analog converter is automatically adjusted and at least one third parameter of a phase compensation network is automatically adjusted using a second search pattern. The automatically adjusting for the LO feedthrough signal component and for the image frequency signal component can be iterated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.