Systems and methods for antenna array calibration

Details Systems and methods for antenna array calibration Systems and methods for antenna array calibration

2011-03-22

2011-03-22

Sotomayor, John B (Department: 3662)

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

Testing or calibrating of radar system

By monitoring

Reexamination Certificate

active

07911376

ABSTRACT:
Antenna arrays are calibrated by providing one or more test signals from the antenna array to be calibrated to a receiving sensor while varying ambient operating conditions over some predetermined range of ambient operating conditions. The signal properties of these test signals may be measured by the receiving sensor or associated spectrum analyzer, and the ambient operating conditions under which the test signals are provided may be similarly measured. Thereafter, signal offsets for each of the antenna array's elements may be determined as a function of the measured ambient operating condition. Calibration information corresponding to these signal offsets may then be stored in a memory of the antenna array for use during operation of the antenna array. This calibration information may be in the form of a lookup table or a curve-fitting equation.

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