2results about "Transit-tube cooling methods" patented technology

This invention discloses a coaxial magnetron with an externally loaded metamaterial, comprising, from the inside out, an anode blade assembly, an anode cylinder, a metamaterial layer, and an outer cylinder. The anode blade assembly consists of multiple anode blades arranged in a uniform ring array, with adjacent anode blades forming a resonant inner cavity. The anode cylinder is fitted outside the anode blade assembly, and its wall has multiple coupling slots. The anode cylinder and the outer cylinder form a coaxial outer cavity, and the inner and outer cavities are connected and communicate with each other through the coupling slots. The metamaterial layer is disposed between the anode cylinder and the outer cylinder to connect the two. The metamaterial layer consists of multiple metamaterial units arranged in a ring array, and each metamaterial unit is a copper sheet with a hollow dumbbell pattern. This invention improves the compactness of the coaxial magnetron while ensuring efficiency, suppresses the competitive mode of the coaxial magnetron, and enhances the anode heat dissipation performance of the coaxial magnetron.

An insulative assembly (130) for a microwave vacuum tube (1204) comprising: an oil tank (1202) and at least one high temperature or high voltage component (1208) arranged in the oil tank. The oil tank (1202) has an internal groove (1210). The at least one high temperature or high voltage component is spaced apart from the internal groove within the oil tank; wherein the internal groove is configured to separate gas bubbles (1212) from the at least one high temperature or high voltage component within the oil tank during operation.