Patent ID: 6670761
Filing Date: 2003-12-30
Classification: H01J

Abstract:
A magnetron having an output of at least 1.7 kW, comprising:a plurality of anode vanes of copper, each anode vane having notches of shapes different from each other in a top and a bottom; ring-shaped outer straps of copper, each in contact to every other one of the anode vanes in top and bottom respective notches thereof to connect the anode vanes for forming an electrostatic field to the anode vanes; and ring shaped inner straps of a material having a heat resistance higher than the anode vanes of copper and a thermal expansion coefficient similar to the anode vanes each in contact to every other one of the anode vanes in top and bottom respective notches thereof, alternate vanes of the outer straps being different from the alternative vanes connected by the inner straps.