Antenna unit and radio base station therewith
US7587174B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Mar 9, 2007 |
| Grant date | Sep 8, 2009 |
| Priority date | — |
| Expiry date | Mar 9, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W16/28
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A radio base station apparatus provided with an array antenna having a plurality of antenna elements for calibrating a phase difference among the array antenna elements. The base station has a probe signal adding unit which divides one probe signal and adds the divided probe signals to each receive signals received by the plurality of antenna elements. A probe data extracting unit extracts the probe data from the receive signals added with the probe signal. A phase calibration calculation unit calculates correlating phase calibration values required for calibrating a phase of each receive signal based on the probe data extracted by the probe signal extracting unit. A phase calibration unit calibrates a phase difference among the array antenna elements by calibrating the phase of the each receive signal based on the phase calibration from the phase calibration calculation unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.