High performance receiver architecture and methods thereof
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United States of America Patent
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Aug 15, 2017
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app pub date -
Mar 23, 2015
filing date -
Mar 23, 2015
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Abstract
A user equipment (UE), receiver and method are generally described herein. The UE may include a mixer, a local oscillator (LO) and an analog-to-digital converter (ADC). The mixer may downconvert a differential radio frequency (RF) signal using LO signals and provide downconverted signals to the ADC. The mixer may provide decoupled lowpass filtering. The lowpass filter capacitors may retain charge when discharging is completed. For each differential signal, the mixer may have an input pullup resistor, first switches receiving the signal and driven by different LO signals, second switches receiving signals from the first switches such that connected pairs of switches may have driven by different LO signals, an ADC input resistor, charging capacitors each connected between first switches driven by the same LO signal, and grounding capacitors each connected to second switches associated with different RF signal outputs and driven by different LO signals.
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