RF Engineering

Cantenna Calculator

Estimate cantenna probe position and waveguide dimensions.

What this tool is for

Estimate cantenna probe position and waveguide dimensions.

Basic formula

Cantenna design depends on can diameter and operating frequency.

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.