Efficient front end module

A front end module having a transmit path, the transmit path comprising:

• a pre-distortion processing circuit configured to process one or more digital baseband transmit signals to pre-compensate for non-linearity of a plurality of power amplifiers;
• a digital up converter circuit operable to convert the digital baseband transmit signal to a digital RF transmit signal;
• a digital to analog converter (DAC) circuit operable to convert the digital RF transmit signal to an analog RF transmit signal, wherein the DAC circuit comprises a multi-channel DAC circuit having M discrete DAC circuits, each of the M discrete DAC circuits operable for digital to analog conversion of signals across a span of 800 MHz or greater in the 5 GHz band;
• an DAC post processing circuit is configured to process the analog RF transmit signal to provide phase adjustment, amplitude adjustment, or jitter cancellation;
• and
• a multiplexer circuit configured to distribute a plurality of N inputs among the M discrete DAC circuits;
• where each of the M discrete DAC circuits is associated with a different power amplifier of the plurality of power amplifiers, each of the plurality of power amplifiers associated with a different frequency band in the 5 GHz band.

A front end module having a receive path, the receive path comprising:

• a plurality of low noise amplifiers, each of the plurality of low noise amplifiers operable to receive an RF signal from an antenna;
• an analog to digital conversion (ADC) circuit operable to receive an analog signal from the plurality of low noise amplifiers and convert the analog signal to a digital RF receive signal, wherein the ADC circuit comprises a multi-channel ADC circuit having M discrete ADC circuits, each of the M discrete ADC circuits operable to convert analog RF signals across a span of about 800 MHz or greater in the 5 GHz band;
• an ADC post processing circuit operable to process the digital RF receive signal in the digital domain to provide phase adjustment, amplitude adjustment, or jitter cancellation;
• a digital down converter circuit operable to convert the digital RF receive signal to a digital baseband receive signal;
• and
• a multiplexer circuit configured to distribute a plurality of N inputs among the M discrete ADC circuits, each of the plurality of N inputs associated with a different low noise amplifier of the plurality of low noise amplifiers, each of the plurality of low noise amplifiers associated with a different frequency band in the 5 GHz band.