18975084. Gain Reduction Techniques for Radio-frequency Amplifiers (Apple Inc.)
Gain Reduction Techniques for Radio-frequency Amplifiers
Organization Name
Inventor(s)
Nitesh Singhal of Santa Clara CA US
Mark G. Forbes of San Carlos CA US
Gain Reduction Techniques for Radio-frequency Amplifiers
This abstract first appeared for US patent application 18975084 titled 'Gain Reduction Techniques for Radio-frequency Amplifiers
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 radio-frequency amplifiers for amplifying a radio-frequency signal. The radio-frequency amplifier may include input transistors cross-coupled with capacitance neutralization transistors and/or coupled to cascode transistors. One or more n-type gain adjustment transistors may be coupled to source terminals of the capacitance neutralization transistors. One or more p-type gain adjustment transistors may be coupled to source terminals of the cascode transistors. One or more processors in the electronic device can selectively activate one or more of the gain adjustment transistors to reduce the gain of the radio-frequency amplifier without degrading noise performance and without altering the in-band frequency response of the radio-frequency amplifier.