RF View Circuit Simulator Overview
RF View's Circuit Simulator tab builds linear RF circuits using a graphical element list. Each element is added to a cascade chain and the combined S-parameters (S11, S21, S22) are computed using ABCD matrix multiplication. The result can be sent directly to the S-Parameter Plot tab for comparison with measured data.
Supported Circuit Elements
| Element | Parameters | Use Case |
|---|---|---|
| Series Resistor | R (Ω) | Loss modeling, bias networks |
| Series Inductor | L (nH) | Matching network, EMI choke |
| Series Capacitor | C (pF) | DC block, series matching |
| Shunt Resistor | R (Ω) | Termination, stabilization |
| Shunt Inductor | L (nH) | Bias feed, shunt match |
| Shunt Capacitor | C (pF) | Bypass, shunt match |
| Ideal T-line | Z₀ (Ω), θ (°) | Transmission line stub |
| Microstrip T-line | W (mm), L (mm), εr, H | PCB microstrip section |
| S2P DUT Block | .s2p file | Any measured device (LNA, filter, PA) |
Step 1: Build a Matching Network + DUT Circuit
- Open RF View → Circuit Simulator tab
- Tap "Add Element" → select "S2P" → load your device .s2p file
- Tap "Add Element" → select "Shunt C" → enter 6.8 pF
- Position shunt C before the S2P block (input matching)
- Add "Series L" → enter 3.5 nH → position after shunt C, before S2P
- Add output elements if needed (shunt C or series L on the other side)
Step 2: Simulate
Tap "Simulate" → RF View computes at each frequency: 1. Converts each element to ABCD matrix 2. Multiplies ABCD matrices in order (left to right = port 1 to port 2) 3. Converts total ABCD → S-parameters [S11, S21, S22] Result view: shows S11, S21 of the complete circuit Switch between S11 and S21 to see match and gain
Step 3: Transfer to S-Parameter Plot
Tap "Send to Plot" → simulation result appears as "Sim_Result" trace in the S-Parameter Plot tab. This lets you overlay simulation vs measured .s2p data on the same chart to compare:
- Simulated matched S11 (should be <−10 dB) vs measured (before adding matching network)
- Simulated S21 with matching network vs measured S21 without it
RF View Circuit Simulator: Build complete RF circuits with R/L/C elements and measured S2P device blocks. Simulate S11, S21, S22 instantly. Send results to the S-Parameter Plot for comparison. Free on Android.