LNA Design Using SpectreRF

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      

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