RF Front End
LNA to link budget. This multi-solver chains 3 solvers into a single guided workflow — run each step in order and carry the result forward.
Controls
Presets
Passive filters shape a signal's frequency content with resistors, capacitors, and inductors. An RC low-pass or high-pass has a cutoff at 1/(2πRC) where the response drops 3 dB; an RLC bandpass resonates at 1/(2π√(LC)) with sharpness set by its quality factor Q.
Data Inspector
Governing equation
Runs locally in your browser — free forever. Scale to the cloud when reality gets heavy.
Controls
Presets
When a transmission line meets a load that does not match its impedance, part of the wave reflects. Incident and reflected waves combine into a standing-wave pattern measured by the VSWR. A perfect match (RL = Z₀, XL = 0) gives VSWR 1 and no reflection — the goal of every antenna and RF design.
Data Inspector
Governing equation
Runs locally in your browser — free forever. Scale to the cloud when reality gets heavy.
Controls
Presets
Combines the radio horizon (1.23·(√h₁+√h₂), feet→miles) with a free-space link budget (EIRP minus path loss vs receiver sensitivity). Actual range depends on terrain, foliage, and buildings — treat this as a best-case planning estimate.
Data Inspector
Governing equation
Runs locally in your browser — free forever. Scale to the cloud when reality gets heavy.
We build custom solvers and workflows for labs, firms, agencies, and courses — your parameters, your branding, your data.
Explore Custom Solver Sets →More in the Electronics & Power pack
Frequently asked questions
- What is the RF Front End multi-solver?
- RF Front End is a guided workflow that chains 3 individual PolySim solvers into one end-to-end analysis, piping each result into the next step.
- Is it free to use?
- Yes. Every step runs entirely in your browser using real numerics — no install, no account, no cloud cost. Custom or private solver packs are available as a paid service.