Method of and apparatus for automatically calibrating a...

Details Method of and apparatus for automatically calibrating a... Method of and apparatus for automatically calibrating a...

G - Physics

01

R

351/1

G01R 29/10 (2006.01) H01Q 3/26 (2006.01)

Patent

CA 2040292

Landing aids using phased-array antennas must be very carefully calibrated. Conventional methods use probes which are inserted into each individual radiating ele- ment of the array antenna. For 6-bit phase shifters, this method is not sufficiently accurate. A method and an apparatus are disclosed wherein the aperture illumina- tion of the array antenna is determined from the output of an integral waveguide and compared with a desired aperture illumination. The difference between actual value and desired value is compensated for iteratively with the aid of an adaptive control system.

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