Start Here (Roadmap): uSimmics / QucsStudio

This page is a reading roadmap for learning uSimmics (formerly QucsStudio) step by step.
If you feel lost, pick a course below and follow the links in order (one article at a time is enough).

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Choose your path (fastest route)

A. First time user (install → run your first simulation)

1. Overview: QucsStudio (now uSimmics)
2. How to Install uSimmics
3. Initial Settings (workflow setup)
4. Circuit Editor: Basic Operations
5. Tutorial: DC Analysis

B. S-parameters (Smith chart → matching)

1. How to Import S-Parameter Files
2. Smith Chart Basics
3. VSWR (and return loss) basics
4. Create Matching Circuit (tool)
5. Automatic Impedance Matching
6. How to Export S-Parameters

C. Transmission lines (Microstrip / Stripline)

1. Transmission Line Calculator (start here)
2. Microstrip impedance calculation
3. Stripline impedance calculation
4. Hybrid substrates (different dielectrics)
5. Etching undercut impact (real PCB effect)

D. Filters (LPF) (synthesis → real parts → optimize)

1. LPF Design Guide (ideal parts)
2. Filter Synthesis (tool)
3. LPF with real component S-parameters
4. Circuit Optimizer (optimization)
5. Monte Carlo (tolerance check)

E. Variations (Monte Carlo / tol function)

1. Executing Monte Carlo Analysis
2. tol() basics and parameter settings
3. Standard deviation & realistic tolerance modeling
4. Parametric analysis (comparison)

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Topic map (clusters)

Getting Started

• Overview: QucsStudio (now uSimmics)
• Install uSimmics
• Initial Settings
• Change project folder location
• Circuit editor operations
• DC tutorial / Digital tutorial / Subcircuits

S-parameters / Smith / Matching

• Import S-parameters / Export S-parameters
• Smith chart / VSWR
• Create matching circuit / Auto matching

Transmission Lines

• Transmission Line Calculator
• Microstrip / Stripline
• Hybrid substrates / Etching undercut
• Foot pattern impact (U.FL example)

Filters & Optimization

• LPF design / LPF with real parts
• Filter Synthesis tool
• Circuit optimizer

Monte Carlo / Parametric

• Monte Carlo
• tol() settings / Realistic tolerance modeling
• Parametric analysis

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Not sure where to start?

• Install first → Install uSimmics
• S-parameters and plots → Import S-parameters
• Matching network → Create matching circuit
• PCB impedance → Transmission line calculator
• Tolerance check → Monte Carlo

Tip: Bookmark this page. You can always come back here when you feel stuck.