Patent ID: 11916577
Assignee: SKYWORKS SOLUTIONS, INC.
Field: Telecommunications (Electrical engineering)
Classification: CPC H | IPC H

Claim 11:
12. A method of duplexing radio frequency signals, the method comprising:
outputting a radio frequency transmit signal to a first transmit filter positioned between a power amplifier and an antenna;
amplifying a leakage signal at a first low-noise amplifier received from the first transmit filter via a first receive filter, the leakage signal caused by the radio frequency transmit signal;
receiving the radio frequency transmit signal at a cancellation path including a second receive filter and a second transmit filter;
receiving a cancellation signal caused by the radio frequency transmit signal travelling through the cancellation path at a second low-noise amplifier; and
applying a phase shift to one or both of the leakage signal and the cancellation signal.