RF Engineering

Transmission Line Calculators

Transmission line calculators for coax, microstrip, impedance, RF loss and PCB traces.

What this tool is for

Transmission line calculators for coax, microstrip, impedance, RF loss and PCB traces.

Basic formula

Transmission line calculator hub.

Design notes

Use these values as a starting point. Real RF performance depends on PCB layout, ground plane, enclosure, cable loss, connectors and measurement conditions.

Common mistakes

Common mistakes include ignoring coax loss, poor antenna placement, missing ground plane, wrong impedance and testing too close to objects.

Frequently asked questions

Are RF calculator results exact?

No. RF results are starting estimates and should be verified with measurements.

Why does antenna tuning change in real life?

Nearby objects, ground plane, enclosure and cable routing can shift resonance and radiation pattern.