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Microwave Encyclopedia

Our searchable on-line microwave encyclopedia predates Wikipedia and offers something you won't find there: an index of over 500 separate pages of our own content. Something missing or incorrect? Show how much you know by telling us about it.

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Here you’ll find Excel spreadsheets for complicated analyses plus some great public domain documents. Have something to share? Send it in and we'll consider posting it.


Microwave Acronyms

Hundreds of industry acronyms are explained here. We’ve got them all.

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Rules of Thumb

Sometimes complex behavior can be interpreted in three seconds if you are familiar with our Rules of Thumb. A microwave Rules of Thumb could be an inexact but notable relationship of one or more design parameters with performance, or it could just be an easy way to remember something that other, lesser people often mix up.



This is a list of other web sites with good microwave engineering content.


What’s New on Microwaves101

The most recent updates and additions to this site are listed here. Subscribe to our M101Stuff monthly newsletter to stay abreast of how we’re constantly improving.


Microwave Mortuary

A collection of microwave technology failures, mistakes and oddities sent in to us by your peers.


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Discussion Board

Join the global conversation on a broad range of microwave and RF topics. Learn about the latest research and have your questions answered by peers around the world.


    • measurement (7 Posts)
    • Dear Desert Sage, The approach you suggest indeed allows you to distinguish between a 50 ohm and a 75 ohm line if you already have a known 50 ohm line. Best...
    • In Categories / Test and Measurement
    • 1 week 1 day ago
    • Gunn diode help (2 Posts)
    • Having never used a Gunn diode I can't offer much help, except to ask two basic debugging questions: 1. Is it in the right way around? 2. Is the fault/short...
    • In Categories / Sources and Receivers
    • 2 weeks 2 days ago
    • Lange Couplers (4 Posts)
    • One other benefit, most -3dB hybrids have an input and output on the same side and an output and the isolated port on the opposite side. This is inconvenient in...
    • In Categories / Filters and Passives
    • 4 weeks 2 days ago

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The Unknown Editor

Breaking news... The Unknown Editor has been nominated for "Best of Industry Award" by Microwaves and RF Magazine! The Award ceremony will be held at the International Microwave Symposium on June 4, at 4PM, by Microwaves and RF Magazine, at booth #1609. See you there!

By now, if you found this page, you might notice that Microwaves101 is vastly different from what it looked like, way back in May 2014.

We have partnered with the IEEE MTT-S to improve the content of Microwaves101. In the short term, you may notice a lot of issues with broken links, missing or moved content, and search tool problems. But we making the change prior to Microwave Week 2014 anyway to introduce the partnership to the community, and work the bugs out as fast as we can. Feel free to send comments, complaints, or suggestions, or pop by our booth at IMS (#651). By the way, if you bookmarked old pages, they should automatically redirect to content on the new site (let us know if you have any problems with that, this is an important feature of the upgrade).


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