Measuring device and method of microwave material permittivity and electricity tuning rate
A technology of dielectric constant and microwave materials, which is used in measurement devices, dielectric performance measurement, and resistance/reactance/impedance measurement. It can solve problems such as inappropriate dielectric constant and achieve high measurement accuracy.
Inactive Publication Date: 2017-06-13
WEIFANG UNIVERSITY
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Problems solved by technology
[0011] In the traditional parallel plate dielectric resonance method, the coaxial probe is placed in the middle of the metal parallel plate. If a high voltage is applied to the metal plate, it will cause a discharge effect between the metal plate and the probe, so this method is not suitable for measurement Dielectric constant of materials under high voltage bias
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[0043] Such as Figure 1-2 As shown, a test device for the dielectric constant and electrical modulation rate of microwave materials, including
[0044] It includes an upper metal plate 3 and a lower metal plate 6 arranged in parallel, and a dielectric resonator is arranged between the upper metal plate 3 and the lower metal plate 6 .
[0045] The dielectric resonator is a hollow cylinder 2 with known dielectric constant.
[0046] A hollow cylinder 2 with known dielectric constant is pressed between the upper metal plate 3 and the second metal plate 6 .
[0047] The hollow cylinder 2 with known dielectric constant is alumina ceramics, the dielectric constant of the alumina ceramics is between 9-10, and its dielectric loss angle is less than 0.001.
[0048] Both ends of the lower metal plate 6 are respectively provided with a rectangular
[0049] Cavities 11, the cavities 11 are located below the lower metal plate 6, each cavity 11 is provided with a coaxial feeding probe 4,...
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The invention discloses a measuring device and method of microwave material permittivity and electricity tuning rates. The device comprises an upper metal plate and a lower metal plate which are parallelly arranged, a dielectric resonator is arranged between the upper metal plate and the lower metal plate, the two ends of the lower metal plate are provided with rectangular cavities enclosed by metal plates respectively, the cavities are located at the low portion of the lower metal plate, and each cavity is internally provided with a coaxial feed probe. According to the measuring device and method of the microwave material permittivity and the electricity tuning rates, the coaxial feed probes are arranged in the cavities enclosed by the metal plates, the discharging effect between a high-voltage electrode and the coaxial feed probes is avoided, and thus the measuring device and method can be used for measuring the permittivity of a material under high-pressure biasing.
Description
technical field [0001] The invention relates to a testing device for dielectric constant and electrical regulation rate, in particular to a [0002] A testing device and method for microwave material dielectric constant and electrical modulation rate. Background technique [0003] The dielectric constant of the material is one of the most important parameters of the dielectric material, which directly reflects the electromagnetic properties of the dielectric material. The measurement of the dielectric constant has always been valued by the majority of workers in the microwave field. [0004] There are also many researches on the microwave characteristics of dielectric materials at home and abroad. With the wide application of dielectric materials, the test of dielectric constant has more and more important application significance. [0005] Materials with tunable dielectric constant have important application value in tunable microwave devices and antennas, such as ferroel...
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CPCG01R27/2617
Inventor 李厚荣樊心民张建心黄小东张彭
Owner WEIFANG UNIVERSITY