Patent ID: 8781429

Claim:
An apparatus comprising: an interference reference circuit configured to provide an interference reference signal indicative of electromagnetic interference impinging on a target signal; a plurality of canceller stages configured to generate respective cancellation signals from respective reference signals provided thereto, the canceller stages configured to evaluate the reference signals over respective analysis bandwidths, each of the analysis bandwidths encompassing a frequency band of the target signal by an amount other than that of other of the canceller stages; a receiver feed circuit coupled to the canceller stages and configured to apply the cancellation signals to an incoming signal comprising the target signal as impinged upon by the electromagnetic interference in a prescribed processing order in a receiver processing path, the application of the cancellation signals in the receiver processing path generating residue signals therein, the receiver feed circuit being constructed to provide each of the residue signals from one canceller stage to another in accordance with the processing order of the receiver processing path, the canceller stages being coupled to the receiver feed circuit such that an initial one of the reference signals evaluated in the processing order is the interference reference signal; and a receiver coupled to the receiver feed circuit and configured to generate a data signal from a final one of the residue signals in the receiver processing path.