Second-harmonic magnetic modulator using ferrite core materials

This paper shows that the use of ferrite cores in second-harmonic magnetic modulators enables established theories of harmonic generation to be used with little modification in quantitative design. A theory of harmonic feedback is developed to describe the effects of signal winding loading, and performance figures for a practical modulator excited at 50 kc are given. In addition, an outline is given of the transistor circuits used with the modulator.