Added medium syndication metadata

This commit is contained in:
Brandon Rozek 2023-02-18 21:37:22 -05:00
parent a51e20fbc7
commit a22bb998cb
14 changed files with 78 additions and 68 deletions

View file

@ -1,11 +1,14 @@
---
title: "Antenna Basics"
date: 2021-07-25T10:43:11-04:00
date: 2021-07-25 14:43:11
draft: false
tags: ["Amateur Radio"]
math: false
medium_enabled: true
medium_post_id: fdec15d43776
tags:
- Amateur Radio
title: Antenna Basics
---
When a radio wave hits an antenna, the electrical component of the wave induces a difference of potential in the conductor which gives rise to an electric current. This is called electromotive force. The current induced is normally small, therefore, we usually design antennas to be as efficient as possible.
Ways to increase efficiency:
@ -14,5 +17,4 @@ Ways to increase efficiency:
- If there is a power line nearby, run the antenna at a right angle to that wire to decrease interference.
- Make the antenna resonant at the frequency you're interested in. You can do this by adjusting the length of the wire, inductance, capacitance.
- Design the antenna so that it focuses the energy from the direction you care about, as opposed to listening equally in all directions.
- Similarly, raise the antenna higher off the ground so that more of it's beam pattern reaches the horizon.
- Similarly, raise the antenna higher off the ground so that more of it's beam pattern reaches the horizon.