IEEE Journal of Solid-State Circuits · 2012 · 326 citations · 34 references
EngineeringElectrical EngineeringMicroelectronicsMicrowave EngineeringWireless CommunicationsCmos Circuit DesignMixed-signal Integrated Circuit DesignNoiseNoise ReductionRadio-frequency Integrated CircuitsReceiver SystemsNoise CancellationNoise FigureNoise-canceling CircuitsReceiver ArchitectureReceiver Front-endsReceiver NoiseWideband Receiver DesignWideband Receivers
A new wideband receiver architecture is proposed that employs two separate passive-mixer-based downconversion paths, which enables noise cancelling, but avoids voltage gain at blocker frequencies. This approach significantly relaxes the trade-off between noise, out-of-band linearity and wideband operation. The resulting prototype in 40 nm is functional from 80 MHz to 2.7 GHz and achieves a 2 dB noise figure, which only degrades to 4.1 dB in the presence of a 0 dBm blocker.
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