RF System Design
RF Cascade Analyzer
Analyze stage gain, Friis noise figure, third-order intercept and modeled compression.
Inputs
Results update as you enter values. Inputs stay in this browser session only.
Results
Total small-signal gain
Cascaded noise figure
Chain IIP3
Chain OIP3
Modeled chain input P1dB
Modeled chain output P1dB
Each stage P1dB and IIP3 is input-referred to that stage. The P1dB estimate solves a cascade of soft-compression curves fitted to each stage’s 1 dB point; real compression curves can differ.
How it works
F = F₁ + (F₂ − 1)/G₁ + …; 1/IIP3 = Σ(Gbefore,i/IIP3,i), in linear power units.
Engineering assumptions
Matched stages, available power gain, input-referred stage P1dB/IIP3. Chain P1dB is a soft-compression-model estimate, not a measured specification.