Controllable engineering scenes—not a static image gallery.
The models express physical relationships through controllable variables and state their approximations and engineering limits. Each connects intuition, mathematics, design action, and measurement.
Cable Antenna Explorer (interactive)
Explore how harness electrical length (l/λ) and common-mode current jointly affect radiation and resonance.
Engineering limit: Small-loop and far-field approximation; above λ/2, multi-lobe behavior invalidates a simple monopole approximation.
Conceptual model · not a simulation · evidence level L1. Use the trend to build intuition; absolute field strength requires CISPR 25 measurement. Limit: small-loop/far-field approximation; for length > λ/2, multi-lobe behavior invalidates a simple monopole approximation.
Limit: Small-loop and far-field approximation; above λ/2, multi-lobe behavior invalidates a simple monopole approximation.. Supports prefers-reduced-motion. Critical states never rely on color alone.
- SourceCommon-mode current source
- PathHarness
- ModeCommon mode
- AntennaHarness
- VictimReceiver
- EvidenceRadiation trend, Electrical length
Every model states its inputs, outputs, and limits.
Identify controllable conditions, observable outputs, and invalid regions before applying a model to design review or test diagnosis.
Maxwell Field Studio
Connect charge, current, material properties, displacement current, and energy conservation through Maxwell's equations.
Engineering limit: E and H decouple in static cases; time-varying displacement current couples them into electromagnetic-wave behavior.
Limit: E and H decouple in static cases; time-varying displacement current couples them into electromagnetic-wave behavior.. Supports prefers-reduced-motion. Critical states never rely on color alone.
Field Region Explorer
Change frequency, source size, and distance to observe near-, transition-, and far-field regions and E/H wave impedance.
Engineering limit: Use r < λ/(2π) as a near-field estimate and r > 2D²/λ as a far-field estimate; source type determines near-field impedance.
Limit: Use r < λ/(2π) as a near-field estimate and r > 2D²/λ as a far-field estimate; source type determines near-field impedance.. Supports prefers-reduced-motion. Critical states never rely on color alone.
Mode Conversion Lab
Show how imbalance, reference discontinuity, and connector geometry convert differential energy into common mode and locate the conversion point.
Engineering limit: S_cd21 is zero for perfect symmetry; mixed-mode S-parameters depend on orthogonal port decomposition.
Limit: S_cd21 is zero for perfect symmetry; mixed-mode S-parameters depend on orthogonal port decomposition.. Supports prefers-reduced-motion. Critical states never rely on color alone.
Return Path Microscope
Change stackup, frequency, routing, and vias to observe return paths, loop area, and reference-plane risk.
Engineering limit: Low-frequency current follows distributed low-resistance paths; high-frequency return current concentrates near the trace reference.
Limit: Low-frequency current follows distributed low-resistance paths; high-frequency return current concentrates near the trace reference.. Supports prefers-reduced-motion. Critical states never rely on color alone.
Cable Antenna Explorer
Change length, frequency, termination, and common-mode current to observe electrical length and radiation trend.
Engineering limit: Small-loop and far-field approximation; above λ/2, multi-lobe behavior invalidates a simple monopole approximation.
Limit: Small-loop and far-field approximation; above λ/2, multi-lobe behavior invalidates a simple monopole approximation.. Supports prefers-reduced-motion. Critical states never rely on color alone.