Microwave energy transmission window
A microwave energy transmission and microwave technology, which is applied in the field of microwave energy transmission windows, can solve problems such as slow heat flow, increased thermal conductivity, and cracking of dielectric windows, and achieve the effect of preventing cracks
Inactive Publication Date: 2013-10-09
INST OF ELECTRONICS CHINESE ACAD OF SCI
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Problems solved by technology
[0007] (1) The window frame of the microwave energy transmission window is cooled by water. Although part of the heat generated by the window is taken away, the heat generated in the center of the dielectric window is still very slow and cannot be effectively conducted, and the temperature in the center of the dielectric window is high. Due to the temperature around the dielectric window, a temperature gradient is formed. When the temperature difference between the center and the edge exceeds a certain limit, the dielectric window will break;
[0008] (2) The dielectric window is made of beryllium oxide ceramics with a thermal conductivity of 250W / (m K) at room temperature, which greatly increases the thermal conductivity, and it is not difficult to ensure that the microwave transmission voltage standing wave ratio (VSWR) within the bandwidth is good, but due to the beryllium oxide The high-temperature dust of the material is toxic, which greatly hinders its popularization
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[0028] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings.
[0029] It should be noted that, in the drawings or descriptions of the specification, similar or identical parts all use the same figure numbers. Implementations not shown or described in the accompanying drawings are forms known to those of ordinary skill in the art. Additionally, while illustrations of parameters including particular values may be provided herein, it should be understood that the parameters need not be exactly equal to the corresponding values, but rather may approximate the corresponding values within acceptable error margins or design constraints. In addition, the directional terms mentioned in the following embodiments, such as "upper", "lower", "front", "rear", "left", "right", etc., are only re...
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The invention provides a microwave energy transmission window. The microwave energy transmission window comprises a window frame and two parallel medium window sheets. The window frame is of a hollow barrel-shaped structure, the two ends of the window frame are connected with a microwave electrical vacuum device and a load through waveguides respectively, the two parallel medium window sheets are fixed on the window frame respectively, the central axes of the parallel medium window sheets coincide with the central axis of the window frame, the first medium window sheet, close to the microwave electrical vacuum device, of the two parallel medium window sheets is connected with the window frame in a sealing mode, and an cross-ventilation space is formed between the two parallel medium window sheets. According to the microwave energy transmission window, air cooling on the surfaces of the medium window sheets is more effective than cooling on the periphery of the window frame, so that the temperatures of the centers of the medium window sheets are basically consistent with the temperatures on the peripheries of the medium window sheets, and the medium window sheets are effectively prevented from cracking.
Description
technical field [0001] The invention relates to the technical field of electric vacuum devices and high-power microwave systems in the electronics industry, in particular to a microwave energy transmission window. Background technique [0002] Electric vacuum microwave devices are a type of active electronic devices that utilize the interaction of electron beams and high-frequency electromagnetic fields in vacuum or gaseous media to realize microwave power amplification and conversion functions. Microwave vacuum electronic devices mainly include: klystrons, traveling wave tubes, magnetrons, gyrotrons, and orthogonal field amplifiers, etc., which are widely used as high-power emission source. As the core component of electric vacuum microwave devices, the microwave energy transmission window has received special attention in the design, manufacture, and aging testing links. [0003] The main function of the microwave energy transmission window is to transmit the microwave p...
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Login to View More IPC IPC(8): H01J23/36H01J23/00
Inventor 范俊杰
Owner INST OF ELECTRONICS CHINESE ACAD OF SCI