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Device for testing membrane complex permeability with short-circuit micro-strip line method

A short-circuit microstrip line, complex permeability technology, applied in the field of complex permeability devices, can solve the problems of high power consumption, inconvenient movement, and high cost of electromagnets, and achieves low operating voltage, low cost, and light weight. Effect

Active Publication Date: 2016-07-27
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The short-circuit microstrip line method is a commonly used method for testing the complex magnetic permeability of thin films. Usually, two large electromagnets are used to load both ends of the fixture during the test. The electromagnet has high power consumption, high cost, and large volume, which is inconvenient move

Method used

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  • Device for testing membrane complex permeability with short-circuit micro-strip line method
  • Device for testing membrane complex permeability with short-circuit micro-strip line method
  • Device for testing membrane complex permeability with short-circuit micro-strip line method

Examples

Experimental program
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Effect test

Embodiment

[0027] Adopt 0.5mm enameled wire to prepare inner coil 3 and outer coil 2, wherein, the inner diameter of inner coil 3 is 3cm, and the number of turns is 400 turns, and the inner diameter of outer coil 2 is 4cm, and the number of turns is 400 turns; 2 Bundle and fix with insulated wires and stick it to the upper surface of the base 1 with glue. The loading platform 4 is fixed inside the inner coil. The short-circuit microstrip line clamp is placed on the loading platform. The angle between the upper surface of the base and the horizontal plane is 10°. Therefore, the central axis of the outer coil 2 and the inner coil 3 and the included angle between the loading platform and the horizontal plane are both 10°, and the distance between the loading platform and the bottom of the inner coil is 1 cm.

[0028] The upper end of the short-circuit microstrip line fixture is connected to the test port of the vector network analyzer through the coaxial line, the two ends of the inner coil ...

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Abstract

The invention discloses a device for testing the membrane complex permeability with the short-circuit micro-strip line method, and belongs to the technical field of magnetic material testing.The device comprises a base, an outer coil, an inner coil, a carrying platform and a short-circuit micro-strip line clamp.The outer coil and the inner coil are coaxial hollow cylinder coils, the inner coil is located inside the outer coil, the outer coil is arranged on the base, the carrying platform is arranged on the inner side of the inner coil, the short-circuit micro-strip line clamp is placed on the carrying platform, and an included angle alpha is formed between the outer coil, a center shaft of the inner coil and the carrying platform and the horizontal plane.According to the device, a center magnetic field is formed through two coaxial hollow cylinder coils, an electromagnet is not required, the size is small, the weight is light, power dissipation is low, a large center magnetic field can be achieved through small coils, and cost is low; the whole testing system is not replaced when the coils are damaged, the corresponding-part coil is only need to be replaced, use is convenient, and working voltage is low.

Description

technical field [0001] The invention belongs to the technical field of magnetic material testing, and in particular relates to a device for testing complex magnetic permeability of thin films by using a short-circuit microstrip line method. Background technique [0002] Microwave permeability is a sign of the response ability of magnetic moments in magnetic materials to microwave signals, and it is generally a complex number; accurate measurement of complex permeability of materials is of great significance for the analysis and application of high-frequency characteristics. While measuring the magnetic permeability, it is necessary to apply an external magnetic field to the test sample, otherwise the film will be in an indeterminate non-magnetic or residual magnetic state, which will hinder the magnetic moment arrangement and mechanism analysis in the film, and the changing external field can also change The positions of the corresponding mechanistic resonance peaks, thereby...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R33/12
CPCG01R33/1223
Inventor 周佩珩罗小嘉王昕谢建良邓龙江
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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