Patent ID: 11901932
Assignee: INTEL CORPORATION
Field: Telecommunications (Electrical engineering)
Classification: CPC H | IPC H

Claim 12:
13. A method for cancelling interference from a received signal, comprising:
receiving a signal using a first receive chain;
activating a second receive chain that is in an inactive state;
capturing the received signal on the first receive chain onto the second receive chain;
processing the received signal on the first receive chain, wherein the first receive chain includes a first low noise amplifier for amplifying the received signal and a first mixer configured to down-convert the amplified received signal using a first local oscillator signal having a first frequency, wherein the received signal includes a wanted signal and an unwanted signal;
processing the received signal on the second receive chain and generating an interference reference signal from the received signal, wherein the second receive chain includes a second low noise amplifier for amplifying the received signal and a second mixer configured to down-convert the amplified received signal using a second local oscillator signal having a second frequency; and
cancelling, in a digital domain, at least in part interference caused by non-linear characteristics of the first receive chain in a presence of the unwanted signal from the down-converted received signal by the first receive chain,
wherein the second receive chain is one of a plurality of receive chains provided for receiving a signal for wireless communication in an apparatus, and
wherein the received signal is provided from the first receive chain to the second receive chain via a third low noise amplifier coupling the first receive chain and the second receive chain, by a capacitive coupling effect via package balls or pins connecting the first receive chain and the second receive chain to a printed circuit board, respectively, or by electro-magnetic coupling between matching coils provided to the first low noise amplifier and the second low noise amplifier.