Antenna array calibration

Details Antenna array calibration Antenna array calibration

2007-04-24

2007-04-24

Tarcza, Thomas H. (Department: 3662)

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

Directive

Including a steerable array

C342S174000, C455S067110

Reexamination Certificate

active

11115598

ABSTRACT:
A smart antenna calibration system is disclosed for calibrating an antenna array having a plurality of antennas. Each antenna has a calibration coupler for providing a monitoring signal indicative of a signal passing through a transceiver associated thereof, and a processing unit including at least one signal splitter that splits at least one monitoring signal and a combiner array comprising one or more combiners for combining at least two split monitoring signals from first and second antennas to produce a first combined signal representing an in-phase sum and a second combined signal representing a quadrature sum. A power detector is in communication with the processing unit, which is configured to estimate a power level of the signal passing each of the first and second antennas and the in-phase power and quadrature power of the in-phase and quadrature sums for determining a phase difference of the signal on the antennas.

REFERENCES:
patent: 6339399 (2002-01-01), Andersson et al.
patent: 6633200 (2003-10-01), Kolanek
patent: 6735423 (2004-05-01), Uskali et al.
patent: 2003/0054790 (2003-03-01), Sanada et al.

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