Patent ID: 7716001

Claim:
An apparatus for delaying an intended signal, comprising: a delay line adapted to delay a reference signal, in accordance with a delay control signal, to provide a delayed reference signal; a delay line calibration module, comprising: a combiner adapted to combine the reference signal and the delayed reference signal to provide an output signal based on the combination of the reference signal and the delayed reference signal; an amplitude detector coupled to an output of the combiner and adapted to detect an amplitude of the output signal; and a controller coupled to an output of the amplitude detector and adapted to generate the delay control signal in accordance with the detected amplitude to configure the delay line with a defined delay; and a coupling device adapted to selectively couple and decouple the calibration module to and from the delay line, wherein the delay line is further adapted to delay the intended signal based on the defined delay if the calibration module is not coupled to the delay line.