Method of determining sign of a calibration compensation
US11018782B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 24, 2016 |
| Grant date | May 25, 2021 |
| Priority date | — |
| Expiry date | Feb 7, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B17/14
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A method (20) of determining sign of a calibration compensation for use in an antenna system (10) is provided, the antenna system (10) comprising individually calibrated subarrays (2a, 2b). The method (20) comprises selecting (21) a set of antenna elements comprising two neighboring antenna elements of the first subarray (2a) and two neighboring antenna elements of the second subarray (2b); measuring (22): in a selected antenna element of the first subarray (2a) a first received signal Y31 as transmitted from the other selected antenna element of the first subarray (2a) and a second received signal Y34 as transmitted from the neighboring antenna element of the second subarray (2b), and in a selected antenna element of the second subarray (2b) a third received signal Y21 as transmitted from the other selected antenna element of the second subarray (2b) and a fourth received signal Y24 as transmitted from the neighboring antenna element of the first subarray (2a); calculating (23) for the first calibrated subarray (2a) a downlink compensation value Δta and an uplink compensation value Ara based on measurement values obtained from the measuring (22), each compensation value Ata, Ara h…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.