Simulate at the
speed of thought.

RayRF is a full-GUI electromagnetics simulator for RF PCB design. Edit the geometry and S-parameters, Smith chart, radiation pattern, and 3D fields update in under a second. Runs locally on your GPU or CPU.

Windows, Linux, no credit card required

openEMS in 27m:44s.
RayRF in 25s.

Total wall-clock to step 5,000 times on a 46,815,696-cell mesh, same workstation. High-resolution run. Matches measurements within 1%.

Cell updates per second, wider bar is faster

46.8M-cell mesh, 5,000 timesteps

RayRF GPU

RTX 5070 Ti

9,843 MCell/s - 68.5x FASTER9843MCps, 68.5x faster

25 s

wall-clock

RayRF CPU

Ryzen 9 9950X (32 threads)

623 MCell/s - 4.3x FASTER623MCps, 4.3x faster

6 m 17 s

wall-clock

openEMS

Ryzen 9 9950X, 32 threads (baseline)

144 MCell/s144MCps

27 m 44 s

wall-clock

CST / HFSS

commercial baseline, $10-50K/yr

not benchmarkednot benchmarked

N/A

wall-clock

LIVE EDITOR ITERATION

~1 s

preview updates on every edit

HIGH RESOLUTION BENCHMARK RUN

25 s

5,000 steps, 46.8M cells, RTX 5070 Ti

NO GPU?

6 m 17 s

CPU benchmark runtime, still 4.3x openEMS on the exact same CPU

AUTO SETTINGS

zero setup

mesh resolution, in-board refinement, boundary conditions, air margins. One slider sets the quality preset.

Iterate live, not in batches.

Turn on Live Mode and the solver runs continuously as you edit geometry. Drag a patch edge and the S-parameters, Smith chart, and 3D radiation pattern all refresh together in under a second.

43 structures measured, 9 shown here. Every resonance within 1%.

We measured 43 structures on a calibrated VNA. The 9 shown here are the clearest across antennas and filters. They are compared trace by trace against RayRF. Every resonance lines up within 1%.

Calibrated LiteVNA64 in hand, sweeping one of the RayRF validation PCBs

PA-08 First ResonanceOne example from the validation suite.

Measured (VNA)RayRF (sim)

See the fields, not just the numbers.

Surface currents, volumetric fields, 3D radiation patterns. See every result in a modern interactive view you can rotate, slice, and explore. Export to CSV, PNG, or Touchstone.

Surface currents on a coupled-resonator filter.

See the passband frequency sweep through the structure as each resonator lights up.

3D radiation pattern.

Rotate, slice, and probe gain in any direction.

Full 3D fields.

Full fields evolving across the simulation volume. Spin it around and scrub through time to understand where every peak and null comes from.

An editor that keeps up with you.

Layer-based 2D editor with the controls you already know from KiCad and Altium. Draw the geometry, import from an image, or start from an example. Set a stackup, place ports, set quality, run.

RayRF 2D editor: stackup, primitives, and properties on one canvas

Draw the geometry. Set the stackup.

Stackup on the left, primitives in the middle, properties on the right. One canvas instead of four config files.

RayRF RF Calculators panel: eleven RF calculators in tabs with microstrip patch sizing and top + side view diagrams

Built-in RF calculators.

The calculators you already search for, integrated right into the editor. Patch antenna, microstrip, and 9 more included. Size traces and elements without leaving the editor.

RayRF Simulate page: center frequency, bandwidth, and auto mesh quality with an energy ringdown plot

Sensible defaults for every setting.

Type a frequency range and quality setting; RayRF automatically sizes the air box and PML, grades the mesh, and picks the run length. Advanced mode gives full control when you need it.

Auto-meshing preview: Yee grid on patch antenna

Auto-meshing you can see.

Auto mode is never a black box. Slide the quality, and use Mesh Preview to confirm thin traces and small gaps get enough cells before you run.

RayRF S-parameters view: S11 magnitude plot beside a Smith chart with linked markers

S-parameters and Smith, side by side.

S11/S21/Sxy magnitude on the left, the Smith loop on the right, markers linked across both. Read match depth, bandwidth, and impedance from the same tab.

Live mode. Everything re-solves in realtime as you edit.

Nudge a patch edge: S11, the Smith loop, convergence, runtime stats, and the 3D pattern all re-solve and update in ~1s.

Priced for individuals.

Commercial 3D EM tools (CST, HFSS) are priced in the $10,000 to $50,000 per year range, with a required sales call. RayRF starts at $17 per month on the annual plan, $29 monthly. No sales call.

30-day free trial on Hobby. No card required.

Hobby

For hobbyists, students, and personal projects.

$17/ monthsave 43%

Billed annually at $199/year.

or $29/month billed monthly

Non-commercial use only
Full CPU and GPU solvers, same speed as Pro
Live Mode preview, auto-mesh, convergence study
All built-in RF structure calculators
CSV + PNG export
Touchstone (.s2p / .sNp) export
Programmatic CLI and headless operation
Up to 2 ports, 2-layer stackups
Activate on 1 machine at a time

30-day free trial on Hobby. No card required.

Pro

For consultants, freelancers, and professional engineers.

$125/ monthsave 37%

Billed annually at $1,499/year.

or $199/month billed monthly

Commercial use licensed
Full CPU and GPU solvers
Unlimited ports, unlimited layers
Touchstone (.s2p / .sNp) export
Programmatic CLI and headless operation
Activate on 2 machines (e.g. laptop and desktop)
Priority email support

Cancel any time from your dashboard.

Founding Member

$1,999 one-time. Own Pro forever.

Every update, every version, paid once. Full Pro features, including activation on 2 machines. Limited to the first 50 subscribers.

Simulate at thespeed of thought.speed of thought.

openEMS in 27m:44s.RayRF in 25s.

Iterate live, not in batches.

43 structures measured, 9 shown here. Every resonance within 1%.

See the fields, not just the numbers.

An editor that keeps up with you.

Priced for individuals.

Simulate at thespeed of thought.speed of thought.

openEMS in 27m:44s.RayRF in 25s.

Iterate live, not in batches.

43 structures measured, 9 shown here. Every resonance within 1%.

See the fields, not just the numbers.

An editor that keeps up with you.

Priced for individuals.

Stop waiting for your simulator.Start designing at the speed of thought.

Simulate at the
speed of thought.

openEMS in 27m:44s.
RayRF in 25s.

Simulate at the
speed of thought.

openEMS in 27m:44s.
RayRF in 25s.

Stop waiting for your simulator.
Start designing at the speed of thought.