Broadband Continuous Conductor Coaxial Fixture for Material Shielding Effectiveness Testing
A technology of shielding effectiveness and coaxial cable, which is applied in the field of broadband continuous conductor coaxial cable fixture, can solve the problems of not meeting the electromagnetic pulse shielding effectiveness test of materials, insufficient bandwidth, etc., and achieve the optimization of size and installation position, shorten the length, reduce the small contact resistance as well as the effect of
Inactive Publication Date: 2017-06-30
PEOPLES LIBERATION ARMY ORDNANCE ENG COLLEGE
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Problems solved by technology
[0006] The technical problem to be solved by the present invention is to provide a coaxial fixture for material shielding effectiveness testing, which solves the problem that the existing material shielding effectiveness testing device has insufficient bandwidth and cannot meet the electromagnetic pulse shielding effectiveness test of materials
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[0020] figure 1 It is an assembly diagram of the broadband continuous conductor coaxial clamp of the present invention, the outer conductor shell consisting of the outer casing (1, 2, 3), two supporting media (4), and the inner conductor (5, 6, 7) inner conductor. The two ends of the present invention leave installation bases of N-type coaxial connectors for connection with other test equipment.
[0021] Figure 9 The material shielding effectiveness frequency-domain testing system composed of attenuator (8), device (9) of the present invention and vector network analyzer (10) can be used to evaluate the frequency-domain shielding effectiveness of materials in the range of 0-10GHz. First, use a vector network analyzer to calibrate the coaxial fixture without shielding material, deduct the attenuation of attenuators, cables, connectors and other components, and then load the shielding material to measure the insertion loss (IL) curve, that is, the material shielding performa...
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The invention relates to a fixture for testing the shielding effectiveness of materials, specifically, a broadband continuous conductor coaxial fixture using a step transition is designed and manufactured (Fig. 1). The technical problem to be solved by the present invention is to provide a coaxial fixture for material shielding effectiveness testing, which solves the problem that the existing material shielding effectiveness testing device has insufficient bandwidth and cannot meet the electromagnetic pulse shielding effectiveness test of materials. In order to solve the above problems, the present invention uses brass as material, Teflon ring as the supporting medium of the inner conductor, adopts step transition at the discontinuity, and makes a circular coaxial clamp with continuous conductor. The invention cooperates with a vector network analyzer and can be used for the frequency domain shielding effectiveness test of materials. The invention cooperates with a pulse signal source, a broadband oscilloscope, an attenuator, etc. to build a time-domain test system for the shielding effectiveness of materials, which can be used for the electromagnetic pulse shielding effectiveness test of materials.
Description
[0001] Technical field [0002] The invention relates to a fixture for testing the shielding effectiveness of materials, in particular, a broadband continuous conductor coaxial fixture with step transition is designed and manufactured. Background technique [0003] As a transient signal with a wide frequency band and high field strength, the electromagnetic pulse has a very complex mechanism of action on various shielding materials. Only using frequency domain testing cannot meet the research needs of electromagnetic pulse shielding effectiveness (SE) of materials. The time-domain test methods of material shielding effectiveness are mostly based on the existing standards GJB 6190-2008 and IEC 61587-3. The measurement belongs to the weak signal measurement under the strong electromagnetic pulse environment, which will inevitably affect the bandwidth of the test system. and dynamic range have high requirements. [0004] The People's Liberation Army University of Science and Tec...
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IPC IPC(8): G01R1/04G01R31/00
Inventor 陈永光魏明陈翔范丽思张希军纪志强胡小锋
Owner PEOPLES LIBERATION ARMY ORDNANCE ENG COLLEGE