Method and arrangement for antenna calibration
US11271299B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 6, 2016 |
| Grant date | Mar 8, 2022 |
| Priority date | — |
| Expiry date | Dec 23, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R29/10
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
In a method for calibrating at least two cross coupled antenna element groups in an antenna array, calibrating (S1) the antenna elements within each group of antenna elements. Further, in a respective calibration transceiver in each group, measuring (S2) a coupled signal within each group and a cross-coupled signal originating in another of the at least two groups. In addition, determining (S3) a respective relative phase and amplitude difference between said at least two groups based on the measured coupled signal and said cross-coupled signal, and determining (S4) the true phase and amplitude difference between the at least two groups based on the determined respective relative phase and amplitude differences. Finally, calibrating (S5) the at least two antenna groups based on the determined true phase and amplitude difference.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.