---
title: "Antenna ground"
question: "How much ground does a 2.4 GHz PCB antenna need?"
url: "https://nearfieldnotes.com/videos/antenna-ground/"
site: "Near Field Notes"
video: "https://nearfieldnotes.com/media/antenna-ground/full.mp4"
duration: "0:22"
date: "2026-10-29"
note: "https://nearfieldnotes.com/notes/antenna-ground/"
---

# Antenna ground (video)

How much ground does a 2.4 GHz PCB antenna need?

0:22, with sound. [Read Note 3](https://nearfieldnotes.com/notes/antenna-ground/) for the full answer, with figures, conditions and sources.

## Transcript

Should you shrink your board to fit a 2.4 GHz PCB antenna?

At 10 mm, only 22% of the power gets out.

Give it 40, and 85% does. About twice the range.

The ground carries nearly as much current as the antenna.

And a matching network only gets the short board to 43%.

---

Source: https://nearfieldnotes.com/videos/antenna-ground/