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Contents Lower Noise Amplifier Design Measurements ......................................... 3 Purpose............................................................................................. 3 Audience ........................................................................................... 3 Overview............................................................................................ 3 Introduction to LNAs............................................................................ 3 The Design Example: A Differential LNA.................................................. 4 Testbench .......................................................................................... 5 Example Measurements Using SpectreRF................................................. 5 Lab1: Small Signal Gain (SP).................................................................. 6 Lab2: Large Signal Noise Simulation (PSS and Pnoise)............................. 17 Lab3: Gain Compression and Total harmonic Distortion (Swept PSS) ........ 24 Lab4: IP3 Measurement---PSS Plus PAC analysis..................................... 34 Lab5: IP3 Measurement---QPSS Analysis with Shooting or Flexible Balance Engine40 Lab6: IP3 Measurement---Rapid IP3 using AC analysis.............................. 49 Lab7: IP3 Measurement ---Rapid IP3 using PSS Plus PAC Analysis............... 53 Conclusion ........................................................................................... 58 Reference ............................................................................................. 58 
LNA Design Using SpectreRF.pdf
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