
461Microwave Tubes
12.6.2 Working Mechanism
The working of a magnetron requires an understanding of the impact of dif-
ferent elds on an electron. In a magnetron, three types of elds are simul-
taneously present. These include electric, magnetic and RF elds. When an
electron comes out from a cathode, all these elds try to inuence it in their
own way. To understand the combined impact of all these elds, the roles
played by each individual eld are to be considered separately. Some of the
aspects of these effects were discussed in detail in Section 11.3. These effects
are reconsidered below with special reference to magnetron.
12.6.2.1 Effec ...