Abstract: A novel magnetron achieves increased power output at high frequencies by replacing a typical resonant cavity with a slow-wave waveguide structure. Waveguides built into the anode body sustain oscillations having phase change coefficients of 2*pi*n radians per section, where n is a positive integer. The magnetron is capable of supporting RF oscillations at frequency harmonics of the fundamental frequency, permitting it to operate at frequencies double or quadruple that of a similarly sized conventional magnetron.

Abstract: A novel magnetron achieves increased power output at high frequencies by replacing a typical resonant cavity with a slow-wave waveguide structure. Waveguides built into the anode body sustain oscillations having phase change coefficients of 2*pi*n radians per section, where n is a positive integer. The magnetron is capable of supporting RF oscillations at frequency harmonics of the fundamental frequency, permitting it to operate at frequencies double or quadruple that of a similarly sized conventional magnetron.

Abstract: This invention is directed to crossed-field devices such as magnetrons to an inductive insert for a magnetron that compensates for the natural increase in cavity inductance with temperature which causes the output frequency to decline with increasing temperature.

Abstract: A magnetron comprises an anode ring concentrically disposed around and spaced from a cathode. The anode ring further comprises a plurality of anode vanes extending radially toward the cathode with cavities being defined between adjacent ones of the plurality of anode vanes. One of the plurality of anode vanes provides an output vane whereby a high power microwave signal is developed in first and second output cavities disposed at either respective side of the output vane. The high power microwave signal is coupled out of both the first and second output cavities by a coaxial transmission line that includes first and second coupling loops disposed in the first and second output cavities, respectively. The output vane further comprises an opening at a central portion thereof. The first and second coupling loops share a common central portion that extends through the opening of the output vane without contacting the output vane.

Abstract: A magnetron comprises an anode ring concentrically disposed around and spaced from a cathode. The anode ring further comprises a plurality of anode vanes extending radially toward the cathode with cavities being defined between adjacent ones of the plurality of anode vanes. One of the plurality of anode vanes provides an output vane whereby a high power microwave signal is developed in first and second output cavities disposed at either respective side of the output vane. The high power microwave signal is coupled out of both the first and second output cavities by a coaxial transmission line that includes first and second coupling loops disposed in the first and second output cavities, respectively. The output vane further comprises an opening at a central portion thereof. The first and second coupling loops share a common central portion that extends through the opening of the output vane without contacting the output vane.