SC3 Receivers Mixer-First and N-Path Architectures,Applications, and Research Di.pdf

1、ISSCC 2025 Short CourseAdvances in Wireless and RF Transceiver CircuitsPresentation 3Receivers:Mixer-First and N-Path Architectures,Applications,and Research Directions Bram NautaUniversity of TwenteEnschede,the Netherlands 2025 IEEE ISSCC 2025 Short CourseSC3:Mixer-First and N-Path Architectures,Ap

2、plications and Research Directions1 of 105OutlineReceiver Introduction Basic N-Path and Mixer-First Receiver(MF-RX)ArchitecturesMidsession Q&AMF-RX Research Directions:Capacitive Stacking TopologiesSelectivity ImprovementsHarmonic Rejection TechniquesMF-RX Outlook:The Road to Fully-Passive CMOS Rece

3、iversCourse Wrap-UpFinal Q&A 2025 IEEE ISSCC 2025 Short CourseSC3:Mixer-First and N-Path Architectures,Applications and Research Directions2 of 105Core task:Provide reliable demodulation in presence of noise and distortionRX needs:Sensitivity(to detect small signals)Selectivity(to reject interferenc

4、e)Receiver(RX)FunctionfRxTxPTxPRxNRxSNRminf 2025 IEEE ISSCC 2025 Short CourseSC3:Mixer-First and N-Path Architectures,Applications and Research DirectionsVintage Homebrew Superheterodyne Radio using Vacuum Tubes,1920s,Picture by Joe Haupt3 of 105InterferenceRX also receives other signalsUnwanted int

5、erference,or blockersSources:In-band(IB),e.g.,signals operating under the same frequency range as the wanted signalOut-of-Band(OOB),e.g.,due to other standards(5G,WiFi,Bluetooth,)Self-interference due to TX(e.g.,in frequency division duplexing,or FDD)OOB interferers are usually stronger and more num

6、erousChannelizedRF SpectrumSignalLeveldBmWantedRX signal“IB”“OOB”“OOB”2025 IEEE ISSCC 2025 Short CourseSC3:Mixer-First and N-Path Architectures,Applications and Research Directions4 of 105Gain CompressionCP1dB(IB)B1dB(OOB)Intermodulation(weak nonlinearity)IB IIP3OOB IIP3Reciprocal mixing with LO pha