Three polarized transverse electromagnetic wave cell field intensity test device

A transverse electromagnetic wave and test device technology, which is applied in the field of electromagnetic compatibility test devices for high-field-strength electromagnetic fields, can solve the problems of single polarized wave, cumbersome process, and poor test reproducibility, so as to enhance reproducibility and simplify the test process , the effect of good overall performance

Inactive Publication Date: 2008-07-09
SOUTHEAST UNIV
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Problems solved by technology

[0003] But both TEM Cell and GTEM Cell can only produce a single polarized wave
The electromagnetic compatibility technical standard stipulates that the equipment under test needs to be tested in three mutually orthogonal

Method used

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  • Three polarized transverse electromagnetic wave cell field intensity test device
  • Three polarized transverse electromagnetic wave cell field intensity test device

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Embodiment Construction

[0028] An embodiment of the present invention uses an N-type radio frequency coaxial socket 17 to feed radio frequency signals into the TTEM Cell, and the inner and outer conductors of the coaxial connector gradually expand into an axe-shaped transition block 20 and a bell mouth 19 respectively. Since the cone-shaped part 7 of the TTEM Cell has a dual-port structure and is equipped with two N-type radio frequency coaxial sockets, there are also two conical matching adjustment core blocks and two axe-shaped transition blocks inside the TTEM Cell, which are connected to the small chamber. The horizontal core plate 1 or the vertical core plate 2 is connected, and the bell mouth is connected with the main aluminum plate 4 of the outer conductor. The overall shape of the test device is a gradually expanding pyramid-shaped cavity, and the terminal is closed by an aluminum plate 23; the input end of the test device, that is, the cone-shaped part 7 has two input coaxial sockets 17, and th...

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Abstract

A triple-transverse electromagnetic cell field intensity tester is an electromagnetic compatible tester capable of producing triple effect, which has a frequency coverage range superior to 10 kHz to 1 Ghz and can be used for testing radiation sensitivity and electromagnetic radiation of electronic equipment. A housing at a taper top portion (7) of the tester is expanded to form a bell mouth (19) and gradually changes to a pyramidal cavity, and the terminals are sealed by an aluminum plate (23). The tester has a double-port input structure, i.e. two coaxial plugs (17) are arranged on the taper top, and the inner conductors of the two coaxial plugs (17) are sequentially expanded to form a tapered matching adjusting core block (18) and an axe-shaped transition block (20), which are respectively connected with a trapeziform horizontal core plate (1) and a trapeziform vertical core plate (2) separated from but orthogonal to each other to form two plate-shaped inner conductors. The terminals of the inner conductors are matched with each other through a non-inductance resistor array (8) and a pyramidal wave absorbing material (9). Large-area grounding switching between the horizontal and the vertical core plates can be achieved by adopting a connection rod and a swing lapped plate, thus ensuring high-frequency grounding performance.

Description

Technical field [0001] The invention is an electromagnetic compatibility test device capable of generating a high-field electromagnetic field with a three-polarization effect, and the frequency coverage is better than 10kHz-1GHz. It can be used for electromagnetic radiation sensitivity test of electronic equipment. It belongs to the technical field of transverse electromagnetic wave field strength devices and electromagnetic compatibility testing. Background technique [0002] Transverse Electromagnetic Cell (TEM Cell), as an important electromagnetic susceptibility testing equipment, has been widely used in electromagnetic compatibility testing. It is a coaxial line with a special structure: the outer conductor of the coaxial line is an olive-shaped cavity with a gradually changing size, and the inner conductor is a core board with a gradually changing width. Compared with ordinary TEM cells, the structure of the GTEM (GHz TEM Cell) cell is further improved. The outer conductor ...

Claims

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Application Information

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IPC IPC(8): G01R29/08
Inventor 蒋全兴王桂华周忠元汤仕平景莘慧周香
Owner SOUTHEAST UNIV
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