Efficient front end module
First Claim
1. A front end module comprising:
- 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 converter (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;
an ADC post processing circuit operable to process the digital RF receive signal in the digital domain;
a digital down converter circuit operable to convert the digital RF receive signal to a digital baseband receive signal;
a transmit path, the transmit path comprising;
a digital up converter circuit operable to convert the digital baseband transmit signal to a digital RF transmit signal;
a digital to analog converter circuit operable to convert the digital RF transmit signal to an analog RF transmit signal;
a plurality of power amplifiers, each of the plurality of power amplifiers configured to provide the analog RF transmit signal to the antenna;
wherein the ADC circuit comprises a multi-channel ADC circuit having M discrete ADC circuits, 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;
wherein the receive path further comprises 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;
wherein the DAC circuit comprises a multi-channel DAC circuit having M discrete DAC circuits, the transmit path further comprising 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.
3 Assignments
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Accused Products
Abstract
Example aspects of the present disclosure are directed to front end modules for use in communication systems. In one example aspect, a front end module can include a receive path. The receive path can include a low noise amplifier. The receive path can include an analog to digital converter (ADC) circuit operable to receive an analog signal from the low noise amplifier and convert the analog signal to a digital RF receive signal. The receive path can include an ADC post processing circuit operable to process the digital RF receive signal in the digital domain. The front end module can include a transmit path. The transmit path can include a digital to analog converter circuit operable to convert the digital RF transmit signal to an analog RF transmit signal. The transmit path can include a power amplifier.
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Citations
13 Claims
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1. A front end module comprising:
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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 converter (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; an ADC post processing circuit operable to process the digital RF receive signal in the digital domain; a digital down converter circuit operable to convert the digital RF receive signal to a digital baseband receive signal; a transmit path, the transmit path comprising; a digital up converter circuit operable to convert the digital baseband transmit signal to a digital RF transmit signal; a digital to analog converter circuit operable to convert the digital RF transmit signal to an analog RF transmit signal; a plurality of power amplifiers, each of the plurality of power amplifiers configured to provide the analog RF transmit signal to the antenna; wherein the ADC circuit comprises a multi-channel ADC circuit having M discrete ADC circuits, 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; wherein the receive path further comprises 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; wherein the DAC circuit comprises a multi-channel DAC circuit having M discrete DAC circuits, the transmit path further comprising 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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A front end module having a transmit path, the transmit path comprising:
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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.
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13. A front end module having a receive path, the receive path comprising:
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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.
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Specification