Abstract: System-on-chip (SOC) products using high frequency, wideband, highly linear, CMOS and BiCMOS processes will be the next evolution of wireless and wireline communications integrated circuits. Aspects described herein can provide enhanced overall performance over existing prior art single-ended, wideband RF amplifier topologies. A single-ended third order intermodulation distortion nulling circuit can extend the dynamic range for wideband amplifiers up to an order-of-magnitude, without a DC power or noise figure (NF) penalty. The application of distortion nulling can be extended to all the building blocks used in CMOS/BiCMOS RF transceivers to improve performance. The application of this concept to all of the building blocks in an RF transceiver will allow the dynamic range of the transceiver to be increased without suffering a DC power dissipation increase or a significant noise increase.

Abstract: System-on-chip (SOC) products using high frequency, wideband, highly linear, CMOS and BiCMOS processes will be the next evolution of wireless and wireline communications integrated circuits. Aspects described herein can provide enhanced overall performance over existing prior art single-ended, wideband RF amplifier topologies. A single-ended third order intermodulation distortion nulling circuit can extend the dynamic range for wideband amplifiers up to an order-of-magnitude, without a DC power or noise figure (NF) penalty. The application of distortion nulling can be extended to all the building blocks used in CMOS/BiCMOS RF transceivers to improve performance. The application of this concept to all of the building blocks in an RF transceiver will allow the dynamic range of the transceiver to be increased without suffering a DC power dissipation increase or a significant noise increase.

Abstract: System-on-chip (SOC) products using high frequency, wideband, highly linear, CMOS and BiCMOS processes will be the next evolution of wireless and wireline communications integrated circuits. Aspects described herein can provide enhanced overall performance over existing prior art single-ended, wideband RF amplifier topologies. A single-ended third order intermodulation distortion nulling circuit can extend the dynamic range for wideband amplifiers up to an order-of-magnitude, without a DC power or noise figure (NF) penalty. The application of distortion nulling can be extended to all the building blocks used in CMOS/BiCMOS RF transceivers to improve performance. The application of this concept to all of the building blocks in an RF transceiver will allow the dynamic range of the transceiver to be increased without suffering a DC power dissipation increase or a significant noise increase.

Abstract: A wideband low noise amplifier (LNA) includes a correction circuit added to compensate for third order intermodulations. A version of the third order nonlinearities created in the main LNA is created in an auxiliary, low power scaled version of the LNA, phased appropriately using a current mirror, and subtracted from the main signal path by summing, thus providing a cancellation of the third order intermodulation (IM) terms in the main signal path leaving a signal remaining which is significantly more spectrally pure than the signal produced by the LNA before correction.