Patent ID: 6211671
Filing Date: 2001-04-03
Classification: H05K

Abstract:
An electromagnetic receiver system adapted to receive and separate at least one desired electromagnetic transmission signal from at least one interfering electromagnetic transmission signal, the receiver system including:a plurality of electromagnetic receivers adapted to be responsive to the at least one transmitted desired electromagnetic signal and the at least one transmitted interfering electromagnetic signal, the receivers generating a plurality of receive signals, each of the receive signals including at least one desired signal component and at least one interfering signal component, the receivers being spatially separated to receive different proportions of the at least one transmitted desired electromagnetic signal and the at least one transmitted interfering electromagnetic signal anda canceller coupled to the receivers adapted to process the receive signals, the canceller including an amplitude-adjustment circuit adapted to provide amplitude adjustment to at least one of the receive signals to compensate for amplitude differences between the at least one interfering signal component in each of a plurality of the receive signals resulting from at least one of:a) differences in propagation of the at least one transmitted interfering signal to the plurality of electromagnetic receivers, andb) differences in the responsiveness of the electromagnetic receivers to the at least one transmitted interfering signal,the canceller including a phase-adjustment circuit adapted to provide phase adjustment to at least one of the receive signals to compensate for phase differences between the at least one interfering signal component in each of a plurality of the receive signals resulting from at least one of:a) differences in propagation of the at least one transmitted interfering signal to the plurality of electromagnetic receivers, andb) differences in the responsiveness of the electromagnetic receivers to the at least one transmitted interfering signal,the canceller adapted to combine the receive signals to separate at least one of the desired signal components by canceling at least one of the interfering signal components.