Antenna unit and radio base station therewith
First Claim
1. 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, comprising:
- a probe signal adding unit which divides a one probe signal and adds the divided probe signals to each of receive signals received by said plurality of antenna elements;
a probe data extracting unit which extracts the probe data from said receive signals added with the probe signal;
a phase calibration calculation unit which calculates correlating phase calibration values required for calibrating a phase of each receive signal based on the probe data extracted by said probe signal extracting unit; and
a phase calibration unit for calibrating a phase difference among the array antenna elements by calibrating said phase of the each receive signal based on the phase calibration from said phase calibration calculation unit.
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Accused Products
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.
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Citations
1 Claim
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1. 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, comprising:
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a probe signal adding unit which divides a one probe signal and adds the divided probe signals to each of receive signals received by said plurality of antenna elements;
a probe data extracting unit which extracts the probe data from said receive signals added with the probe signal;
a phase calibration calculation unit which calculates correlating phase calibration values required for calibrating a phase of each receive signal based on the probe data extracted by said probe signal extracting unit; and
a phase calibration unit for calibrating a phase difference among the array antenna elements by calibrating said phase of the each receive signal based on the phase calibration from said phase calibration calculation unit.
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Specification