How to Design a Matching Network on Android with RF View

Complete Matching Design Workflow

Step 1: Get the Device S-Parameter File

You need the device's S-parameter file (.s1p for 1-port device like antenna, or .s2p for 2-port like LNA/PA/filter). Sources:

• Download from manufacturer's website (SimSurfing for Murata, Qorvo website, etc.)
• Export from VNA after measuring the device
• Get from EDA tool simulation results

Step 2: Load and Inspect

1. Transfer .s1p or .s2p file to Android phone
2. Open RF View → S-Parameter Plot → load file
3. Switch to Smith chart view → see device impedance at target frequency
4. If the point is far from center → device needs matching

Step 3: Auto Match

1. Open Matching tab
2. Select port to match (Port 1 for input, Port 2 for output)
3. Set target frequency (e.g., 900 MHz)
4. Select matching topology: Auto (RF View chooses), L-network, or Microstrip
5. Tap "Auto Match" → RF View synthesizes the matching network
6. View matched S11: should show deep dip at target frequency (<−10 dB)

Step 4: Real Match – Substitute Actual Components

1. Tap "Real Match" → RF View searches Murata catalog
2. Substitutes ideal L and C with nearest standard values
3. Re-simulates with real component measured S-parameters
4. New S11 shows real-component performance (slightly worse than ideal, but realistic)

Step 5: Monte Carlo Yield Check

1. Switch to Tolerance Analysis
2. Set ±5% tolerance on each component
3. Run 200 iterations
4. Check: what percentage of runs meet S11 <−10 dB across full band?
5. If yield <90%: redesign with lower Q or tighter tolerance components

Related Topics

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