18920140. Radio-frequency Power Amplifier with Intermodulation Distortion Mitigation (Apple Inc.)
Contents
Radio-frequency Power Amplifier with Intermodulation Distortion Mitigation
Organization Name
Inventor(s)
Nitesh Singhal of Santa Clara CA US
Radio-frequency Power Amplifier with Intermodulation Distortion Mitigation
This abstract first appeared for US patent application 18920140 titled 'Radio-frequency Power Amplifier with Intermodulation Distortion Mitigation
Original Abstract Submitted
An electronic device may include wireless circuitry with a processor, a transceiver, an antenna, and a front-end module coupled between the transceiver and the antenna. The front-end module may include one or more power amplifiers for amplifying a signal for transmission through the antenna. Radio-frequency power amplifier circuitry may include an amplifier, an input transformer for coupling radio-frequency input signals to the amplifier, an active inductor load coupled to the input transformer, and a second order intermodulation generation circuit configured to generate and inject a second order intermodulation product into the input transformer. The injected second order intermodulation product can be used to cancel out unwanted third order intermodulation products generated by the amplifier, which reduces intermodulation distortion experienced by the amplifier circuitry.
