Patent ID: 6320540
Filing Date: 2001-11-20
Classification: H01Q

Abstract:
A system providing phase reference line at a point in a signal path remote from an antenna utilized in forming desired antenna patterns, said system comprising:a plurality of signal manipulators, each signal manipulator of said plurality disposed in a signal path coupled to said antenna, wherein a point of said signal path each of said signal manipulators is disposed is between said antenna and circuitry adapted to define said desired antenna patterns;a controller coupled to said plurality of signal manipulators adapted to provide control signals thereto to selectively manipulate signal attributes of signals communicated through said signal paths to provide a beam forming phase reference line at said point of said signal path said signal manipulators are disposed; anda signal attribute monitoring circuit, wherein signal attributes which may be manipulated by said signal manipulators under control of said controller are monitored for intelligent control of said signal manipulators by said controller, wherein said signal attribute monitoring circuit comprises a first coupler introducing a calibration signal into each said signal path and a second coupler receiving said calibration signal introduced into each said signal path.