---
title: "Model S1365 | 3.6 GHz Spectrum Analyzer"
date: 2025-01-06T08:50:05Z
modified: 2025-10-01T04:59:55Z
permalink: "https://www.berkeleynucleonics.com/model-s1365-36-ghz-spectrum-analyzer/"
type: page
status: publish
excerpt: ""
wpid: 19625
---

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####  What Is Phase Noise? 

 



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Phase noise is the noise produced by fast, short term fluctuations in a signal. Phase noise diminishes the signal quality and increases error rates in communication links. Although there is no such thing as “no” phase noise, the less you have, the better.