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Measuring system for ferrite dielectric constant

A dielectric constant and measurement system technology, which is applied in the direction of measuring devices, measuring electrical variables, measuring resistance/reactance/impedance, etc., to achieve the effects of stable performance, easy use and operation, and high measurement accuracy

Active Publication Date: 2013-09-04
BEIJING DAHUA RADIO INSTR FACTORY
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Problems solved by technology

There is no ferrite dielectric constant measuring instrument with high precision, stable performance, easy use and operation in the prior art

Method used

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  • Measuring system for ferrite dielectric constant

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specific Embodiment

[0021] Structural features:

[0022] Such as figure 1 , figure 2 As shown, including waveguide coaxial converters, isolators, couplers, detectors, cylindrical resonators, precision attenuators and other microwave devices, the frequency stability of the microwave signal source is 5×10 -6 , When adjusting the frequency, choose different frequency steps according to the actual situation, respectively 1MHz, 100KHz, 10KHz. The signal level and the detection output of the resonant frequency point can be monitored in real time through the readings of the two digital display meters. When working, insert the sample into the cylindrical resonant cavity, move the carriage, and place the permanent magnet above the resonant cavity. The operation is simple and convenient.

[0023] working principle:

[0024] The resonant cavity is used to measure the complex permittivity of ferrite, and TM010 mode-through cylindrical resonant cavity and rod-shaped ferrite samples are selected. Since ...

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Abstract

The invention discloses a measuring system for a ferrite dielectric constant. The measuring system comprises a microwave signal source, wherein one path of output signal of the microwave signal source is connected with a coaxial port of a first waveguide coaxial converter; a precision attenuator, a cylindrical resonator, an isolator and a coaxial wave detector are sequentially connected to a waveguide port of the first waveguide coaxial converter through a waveguide; the coaxial output end of the coaxial wave detector is connected with the microwave signal source; a second waveguide coaxial converter is coupled to the waveguide through a directional coupler; another path of output signal of the microwave signal source is connected with a coaxial port of the second waveguide coaxial converter; and a constant magnet is arranged above the cylindrical resonator. The measuring system has the advantages of high measuring precision, stable performance and simpleness and convenience in use and operation, and is suitable for being used in occasions such as laboratories and factories and is an ideal instrument for measuring the ferrite dielectric constant.

Description

technical field [0001] The invention relates to a dielectric constant measuring instrument, in particular to a ferrite dielectric constant measuring system. Background technique [0002] Based on the needs of research, application and device design of microwave ferrite materials, more and more people pay more and more attention to the relevant knowledge of the complex dielectric constant of ferrite materials. There is no ferrite dielectric constant measuring instrument with high precision, stable performance, and easy use and operation in the prior art. Contents of the invention [0003] The object of the present invention is to provide a ferrite dielectric constant measurement system with high precision, stable performance, and easy use and operation. [0004] The purpose of the present invention is achieved through the following technical solutions: [0005] The ferrite dielectric constant measurement system of the present invention includes a microwave signal source, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R27/26
Inventor 彭越刘中生刘雯蕊
Owner BEIJING DAHUA RADIO INSTR FACTORY
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