A crossed field device for generating electromagnetic emissions includes an anode having a first slow-wave structure having a plurality of first vanes separated by cavities formed therebetween and a second slow-wave structure having a plurality of second vanes separated by cavities formed therebetween. At least one of the first vanes is laterally aligned with one of the second vanes. The first vanes are offset from the second vanes by an offset distance so that at least one of the first vanes is not laterally aligned with a second vane and at least one of the second vanes is not laterally aligned with a first vane. The device further includes a cathode disposed in a space located between first and second vanes. A magnetic element generates a magnetic field (B), which is oriented orthogonally to an electric field (E) formed by the anode and cathode to generate EM emissions.

An anode structure for a magnetron provides for low eddy currents and efficient water cooling. The anode structure may be made by machining a bimetal blank including an out layer of a first metal and an inner layer of a second metal and formed by explosion bonding. The second metal has a resistivity lower than first metal and a thermal conductivity higher than the first metal. The machining may result in the anode structure with vanes each having a center (tip) portion made of the second metal and the rest made of the first metal. The machined anode structure may be coated with the second metal.

An anode structure for a magnetron provides for low eddy currents and efficient water cooling. The anode structure may be made by machining a bimetal blank including an out layer of a first metal and an inner layer of a second metal and formed by explosion bonding. The second metal has a resistivity lower than first metal and a thermal conductivity higher than the first metal. The machining may result in the anode structure with vanes each having a center (tip) portion made of the second metal and the rest made of the first metal. The machined anode structure may be coated with the second metal.

An Inverted Cylindrical Magnetron (ICM) System and Methods of Use is disclosed herein generally comprising a co-axial central anode concentrically located within a first annular end anode and a second annular end anode; a process chamber including a top end and a bottom end in which the first annular end anode and the second annular end anode are coaxially disposed, whereby the first annular end anode, the second annular end anode, and the central anode form a 3-anode configuration to provide electric field uniformity, and the process chamber including a central annular space coupled to a tube insulator disposed about the central annular space wall; a cathode concentrically coupled to the tube insulator and a target; and a plurality of multi-zone electromagnets or hybrid electro-permanent magnets surrounding the exterior of the process chamber providing a tunable magnetic field.

An Inverted Cylindrical Magnetron (ICM) System and Methods of Use is disclosed herein generally comprising a co-axial central anode concentrically located within a first annular end anode and a second annular end anode; a process chamber including a top end and a bottom end in which the first annular end anode and the second annular end anode are coaxially disposed, whereby the first annular end anode, the second annular end anode, and the central anode form a 3-anode configuration to provide electric field uniformity, and the process chamber including a central annular space coupled to a tube insulator disposed about the central annular space wall; a cathode concentrically coupled to the tube insulator and a target; and a plurality of multi-zone electromagnets or hybrid electro-permanent magnets surrounding the exterior of the process chamber providing a tunable magnetic field.

An industrial magnetron includes an anode cylinder body and a cooling block arranged in a columnar manner around an outer periphery of the anode cylinder body, where the cooling block is provided with a refrigerant flow path that circulates a liquid refrigerant to circulate around the anode cylinder body and directly cool the anode cylinder body, and the refrigerant flow path has a helical groove on an inner wall surface.

An industrial magnetron includes an anode cylinder body and a cooling block arranged in a columnar manner around an outer periphery of the anode cylinder body, where the cooling block is provided with a refrigerant flow path that circulates a liquid refrigerant to circulate around the anode cylinder body and directly cool the anode cylinder body, and the refrigerant flow path has a helical groove on an inner wall surface.

The present invention provides a relativistic magnetron including an anode with an entrant channel, the channel having an input end, an output end and a dimensional discontinuity between the ends. The channel is connected to the magnetron and has an anode defining an interaction space located between the dimensional discontinuity and output end. Also provided is a cathode, located upstream, a spaced distance away from the interaction space towards the input end, the cathode is adapted to send an electron beam into the interaction space where the electron beam forms a virtual cathode in the interaction space.

A microwave oven is provided. The microwave oven includes a main body including a cooking chamber having an opening that is opened forward, and door coupled to the main body and capable of opening/closing the cooking chamber, a magnetron that generates microwaves and is connected to a second side of the cooking chamber, the second side being opposite to a first side to which the door is coupled, a high-voltage capacitor connected to the magnetron, a high-voltage diode connected to the magnetron, a high-voltage transformer connected to the magnetron, and a magnetic body arranged adjacent to a current path connecting the magnetron to the high-voltage capacitor, the high-voltage diode, and the high-voltage transformer, wherein, along the current path, a current flows from the magnetron to the high-voltage capacitor, the high-voltage diode, and the high-voltage transformer, and wherein the magnetic body surrounds the current path.

A microwave oven is provided. The microwave oven includes a main body including a cooking chamber having an opening that is opened forward, and door coupled to the main body and capable of opening/closing the cooking chamber, a magnetron that generates microwaves and is connected to a second side of the cooking chamber, the second side being opposite to a first side to which the door is coupled, a high-voltage capacitor connected to the magnetron, a high-voltage diode connected to the magnetron, a high-voltage transformer connected to the magnetron, and a magnetic body arranged adjacent to a current path connecting the magnetron to the high-voltage capacitor, the high-voltage diode, and the high-voltage transformer, wherein, along the current path, a current flows from the magnetron to the high-voltage capacitor, the high-voltage diode, and the high-voltage transformer, and wherein the magnetic body surrounds the current path.