Multipath fade equaliser

Details Multipath fade equaliser Multipath fade equaliser

H - Electricity

03

H

328/0.2

H03H 17/00 (2006.01) H04B 7/015 (2006.01)

Patent

CA 1171468

Abstract: The present invention relates to an adaptive fade equalizer. The equalizer is comprised of a differencing unit for forming a difference between an input equal to the equalizer and a component of the equalizer output signal. A feedback loop is provided for coupling the component of the output signal to the differencing unit. The feedback loop includes a fixed delay T, a variable attenuator and a variable phase shifter. A phase control network and an attenuation control network compare selected portions of the frequency spectrum of the signal and adjust the variable controls to minimize the effects of multipath fades upon the signal. It is an advantage of the equalizer that it automatically adjusts for changes in the frequency and depth of the fade notch.

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