Antenna array receiver and a method of correcting a phase shift amount of a receiving signal
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United States of America Patent
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Aug 3, 1999
Grant Date -
N/A
app pub date -
May 21, 1998
filing date -
May 30, 1997
priority date (Note) -
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Abstract
First and second phase control amount tables output to first and second vector multiply circuits phase control signals Sc1 and Sc2 representative of corresponding phase shift amounts with gains represented by input gain control signals Sg1 and Sg2 as arguments. The first and second vector multiply circuits shift the phases of in-phase components S13 and S23 and quadrature components S14 and S24 of an antenna 2 in opposite directions in accordance with the phase control signals Sc1 and Sc2. Consequently, the amount of phase shift caused by receiving amplifiers is corrected so that the phase difference at antenna terminals between the input signals to the antennas is maintained.
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