Calibration method and radio apparatus

Details Calibration method and radio apparatus Calibration method and radio apparatus

2006-01-31

2006-01-31

Phan, Dao (Department: 3662)

Communications: directive radio wave systems and devices (e.g.,

Directive

Including a steerable array

C342S372000, C342S374000

Reexamination Certificate

active

06992620

ABSTRACT:
A signal processing unit carries out signal processings necessary for a receiving/transmission processing of an adaptive array antenna. The signal processing unit also carries out a signal processing necessary for determining phase errors in quadrature modulation and quadrature detection to be done by radio units, namely, for determining a rotation amount of an initial phase correction value. The radio units in a base station apparatus carry out frequency conversion processing, amplification processing, quadrature modulation processing, quadarture detection processing, A-D or D-A conversion processing and the like between the baseband signals and radio frequency signals. An initial phase correction value determining unit determines rotation amounts of initial phase correction values, based on power-measuring received signals inputted from the radio units, and outputs to the signal processing unit as initial phase correction value signals.

REFERENCES:
patent: 6864839 (2005-03-01), Hamada et al.
patent: 2002-76746 (2002-03-01), None

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