A fast and automatic measurement method for saturation characteristics of traveling wave tubes
A technology of automatic measurement and traveling wave tube, applied in the direction of measuring electricity, measuring devices, measuring electrical variables, etc., can solve the problems of poor practicability, low measurement efficiency, and poor measurement accuracy, so as to reduce the poor practicability and improve the measurement speed. , the effect of improving safety
Active Publication Date: 2019-04-05
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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[0005] The purpose of the present invention is to provide a fast and automatic measurement method for the saturation characteristics of traveling wave tubes in view of the existing defects, so as to overcome the problems of poor practicability, low measurement efficiency and poor measurement accuracy of the existing methods
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[0025] The present invention will be described in further detail below in conjunction with specific embodiments and drawings; the embodiments are only used to explain the present invention, and are not intended to limit the present invention.
[0026] Such as figure 1 Shown is a structural block diagram of the measurement system of the present invention, including a signal source 1, a circulator 2, a directional coupler 3, a measured traveling wave tube 4, a directional coupler 5, a high-power load 6, a power meter 7, a power meter 8, Host computer 9, data bus 10; a circulator 2 is added between the signal source 1 and the directional coupler 3 to prevent the signal source from being damaged by the reflected signal caused by the mismatch of the measurement line.
[0027] The process of measuring an input and output point of the TWT to be tested at a specific frequency is as follows: the host computer 9 transmits instructions to the signal source 1 through the data bus 10, cont...
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The invention belongs to the technical field of automatic testing, and provides a fast and automatic measurement method for the saturation characteristics of traveling wave tubes, which is used to overcome the problems of poor practicability, low measurement efficiency and poor measurement accuracy of existing methods; the invention adopts initial power step-by-step rapid measurement M power points, so that the traveling wave tube to be tested can quickly measure the linear amplification area of the traveling wave tube with a large input step, and improve the measurement speed; when the traveling wave tube enters the nonlinear area, the power step is adaptively adjusted, and the input, The output characteristics are precisely measured to improve the measurement accuracy; and the damage caused by the long-term operation of the traveling wave tube in the saturation region caused by improper cut-off power setting in the existing method is effectively avoided, and the safety of the measurement is improved. The present invention uses a host computer to control the entire measurement process. The entire measurement process only needs to set initial measurement parameters, without manual intervention in the whole process, which significantly improves the measurement efficiency and effectively reduces the unavoidable poor practicability of the existing measurement methods.
Description
technical field [0001] The invention belongs to the technical field of automatic testing, and in particular relates to a fast and automatic measuring method for the saturation characteristic of a traveling wave tube. Background technique [0002] Traveling wave tube is a kind of vacuum microwave electronic device widely used in modern military and communication fields, and plays a very important role; especially in the military field, it is the core component of electronic countermeasures, communication, radar, remote sensing and other equipment. At present, due to the manufacturing precision of traveling wave tubes and the nonlinear characteristics of materials, the parameters and indicators of each branch of traveling wave tubes of the same model are not the same. In order to solve this problem, every index parameter of each traveling wave tube must be measured and recorded in detail before delivery to the user. [0003] According to the input-output relationship of the t...
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IPC IPC(8): G01R31/00
CPCG01R31/00
Inventor 黄桃刘宇宫大鹏周小社杨中海李斌
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA