Patent ID: 6614298
Filing Date: 2003-09-02
Classification: H03F

Abstract:
An adaptive circuit comprising:at least two adjusters, each adjuster including at least one control input to alter the operation of the circuit; at least one signal generator to create a plurality of tracer signals, each created tracer signal being orthogonal to each other created tracer signal, each tracer signal comprising a Walsh code; at least two controllers, each controller operable to output a control signal to at least a respective one of the control inputs of the at least two adjusters, a different orthogonal tracer signal from said at least one signal generator being applied to each respective control signal as a dither; and at least one detector operable to extract at least one orthogonal tracer signal from the circuit and to apply the extracted at least one orthogonal tracer signal to a respective one of the at least two controllers, each controller being responsive to the respective applied signal to alter the respective control signal to converge operation of the circuit to an optimal or near optimal configuration.