IQ baseband matching calibration technique
US8873610B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 21, 2014 |
| Grant date | Oct 28, 2014 |
| Priority date | — |
| Expiry date | Feb 21, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L27/364
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
The first and second outputs of a signal generation system are coupled to the first and second inputs of a signal digitizing system via respective electrical conductors. A controller directs the generation system to generate a first calibration signal, and the digitizing system responsively captures a first set of vector samples. The conductors are then reconfigured so they connect the first and second outputs of the generation system respectively to the second and first inputs of the digitization system. The controller then directs the generation system to generate a second calibration signal, and the digitizing system responsively captures a second set of vector samples. The controller or other processing agent computes gain and/or phase impairments using the first and second vector sample sets. Digital filter parameters may be computed based on the computed impairment(s), and used to correct the impairment(s) of the generation system and/or the digitizing system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.