eetop.cn_T5 - Fundamentals of RF System Analysis for IC Designers.pdf

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1、T5:Fundamentals of RF System Analysis for IC Designers 2025 IEEE International Solid-State Circuits ConferenceFundamentals of RF System Analysis for IC DesignersRaja Pullela()Maxlinear IncFebruary 16th,20251 of 88T5:Fundamentals of RF System Analysis for IC Designers 2025 IEEE International Solid-St

2、ate Circuits ConferenceOutline Introduction RF Systems/Modulation basics Setting up a wireless link Transmitter Design Receiver Design Summary2 of 88T5:Fundamentals of RF System Analysis for IC Designers 2025 IEEE International Solid-State Circuits ConferenceSetting up a Wireless Link-Many Questions

3、Carrier frequency,BandwidthModulation,Transmit PowerError Vector Magnitude(EVM)Out of band Noise or Spurious EmissionsAntennas Directional or Not1 kmTime or Frequency DivisionSingle-Carrier or OFDMError CorrectionRFDAC/RFADC or Mixer basedSample rates for convertersSupporting 500Mb/s,Antennas 1km ap

4、art3 of 88T5:Fundamentals of RF System Analysis for IC Designers 2025 IEEE International Solid-State Circuits ConferenceWhy use“dBs”?RF Engineers use“dB”or“dBm”Historically used,enables expressing large ratiosdB is measure of power ratios on log scale dB=10*log10(P1/P2)Some examples:Ratio of 10X in

5、power=10dB,Ratio of 100X in power=20dBRatio of 10X in voltage or current=100X in power=20dB dBm is an absolute measure of PowerPower of 1mW=0dBm;100W=50dBm,1pW=-90dBm dBr is power difference in dB between two signals,in same bandwidth4 of 88T5:Fundamentals of RF System Analysis for IC Designers 2025

6、 IEEE International Solid-State Circuits ConferenceAntenna BasicsDipole-Energy in all directions Exist only in theoryAntenna gain in dBi Power Gain of antenna with respect to Isotropic antennaIsotropic AntennaDirectional AntennaRadiation PatternEnergy in direction of interestYagi or Parabolic Dish A