How a Magnetron Produces Microwaves: A Comprehensive Guide

[Kalrag]

I have looked all of the internet trying to find how a magnetron produces microwaves to find nothing. Can anyone tell how a magnetron produces microwaves?

 

[fss]

Via Google:

http://www.gallawa.com/microtech/magnetron.html

 

[microwaveguru]

Look at the wikipedia article : http://en.wikipedia.org/wiki/Cavity_magnetron

A magnetron is an oscillator: electrons are boiled off the filament (cathode) and attracted to the anode, but that is surrounded by a magnet that forces the electrons to move in a circular path past a number of "cavities" in the anode - these are tuned so the create the EM field at a particular frequency