A design method of gigahertz transverse electromagnetic wave cell
A technology of transverse electromagnetic wave and design method, which is applied in the field of electromagnetic compatibility test equipment design, can solve the problems of complicated GTEM design process and difficulty in achieving low standing wave ratio electromagnetic performance, and achieve the effect of simple operation
Active Publication Date: 2018-04-27
CHINA SHIP DEV & DESIGN CENT
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[0004] The present invention aims at the complicated design process of GTEM in the prior art, and it is difficult to realize the electromagnetic performance problem of low standing wave ratio, and provides a design method of a gigahertz transverse electromagnetic wave cell, which can ensure the realization of low standing wave ratio GTEM, and make gigahertz transverse electromagnetic wave The electromagnetic waves emitted by the chamber meet the requirements of the standing wave ratio specified in the standard
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[0027] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.
[0028] An embodiment of the present invention provides a method for designing a gigahertz transverse electromagnetic wave cell. The method includes the following steps: 1) A circular feed point is set at the apex of the pyramid of the pyramid-shaped inclined outer conductor cavity, and the bottom surface of the pyramid is the terminal plane. The terminal plane is set as a rectangle; 2) the apex of the inner conductor plate is set at the circular feed point, the bottom surface of the inner conductor plate is set on the terminal plane, and the thickness of the inner conductor plate remains un...
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The invention provides a design method of a gigahertz transverse electromagnetic wave cell, the method comprising the following steps: setting a circular feed point at the apex of the pyramid-shaped inclined outer conductor cavity, the bottom surface of the pyramid is a terminal plane, and the terminal plane is set as rectangle. The apex of the inner conductor plate is set at the circular feed point, the bottom surface of the inner conductor plate is set on the terminal plane, and the thickness of the inner conductor plate remains unchanged. When each cross-section of the coaxial transmission line structure between the circular feed point and the terminal plane is set to a characteristic impedance of 50Ω, the lengths of each cross-section of the inner conductor plate with gradually changing cross-sectional lengths are calculated. The beneficial effects of the invention are: the design method of the invention is easy to operate, can ensure the realization of the low standing wave ratio gigahertz transverse electromagnetic wave cell, and make the electromagnetic wave emitted by the gigahertz transverse electromagnetic wave cell meet the standing wave ratio requirement stipulated in the standard.
Description
technical field [0001] The invention belongs to the field of electromagnetic compatibility testing equipment design, in particular to a design method of a gigahertz transverse electromagnetic wave cell. Background technique [0002] A gigahertz transverse electromagnetic cell (GTEM) is a field generating device that generates transverse electromagnetic waves with frequencies up to GHz, and the operating frequency is up to 18 GHz, and the lowest frequency is usually 10 MHz. GTEM generates uniform and transverse electromagnetic waves, which can be used for electromagnetic sensitivity test of electronic equipment (this index can reflect the anti-interference ability of equipment). It has been recommended by CNAS (China National Accreditation Service for Conformity Assessment) as a sensitivity test device; it can also be used as a Calibration device for field strength meter (used to test electromagnetic field strength). Standing wave ratio is one of the main technical indicator...
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IPC IPC(8): H01P11/00G01R29/08
Inventor 王春宋文武黄明亮吴为军谢大刚
Owner CHINA SHIP DEV & DESIGN CENT