A New Method of Modulating the Magnetron Oscillator

In the new technique of the ultra-short waves the magnetron oscillator plays an important rôle. The shortest wave lengths as well as the largest powers have been obtained by using magnetron oscillators. Its use for radio communication purposes was limited however by modulation difficulties. The method of modulating magnetron oscillators described here is based on the application of an additional electrode placed in the magnetron tube; the modulation occurs by varying the potential of this electrode. The first investigations of this method have dealt with the split-anode magnetron acting as the "dynatronic" oscillator (negative resistance type). Nevertheless further experiments are carried on with the modulation of the "electronic" oscillator.