Antenna calibration method and system
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United States of America Patent
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Aug 5, 2008
Grant Date -
N/A
app pub date -
Mar 14, 2006
filing date -
Mar 15, 2005
priority date (Note) -
Expired
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Abstract
A phased array antenna system includes an RF front end, a radome, and an optical calibrator embedded in the radome for enabling in-situ calibration of the RF front end. The optical calibrator employs an optical timing signal generator (OTSG), a Variable Optical Amplitude and Delay Generator array (VOADGA) for receiving the modulated optical output signal and generating a plurality of VOADGA timing signals, and an optical timing signal distributor (OTSD). The in-situ optical calibrator allows for reduced calibration time and makes it feasible to perform calibration whenever necessary.
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