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Nonideal metal surface displacement current calculation method based on random wave model

A metal surface and displacement current technology, applied in the field of electromagnetic transmission, can solve the problem that the specific value of the displacement current cannot be directly obtained, and achieve the effect of solving the disconnection of electromagnetic analysis, improving precision and efficiency, and accurate results

Inactive Publication Date: 2016-11-09
XIDIAN UNIV
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Problems solved by technology

However, the high-frequency calculation method is based on the geoelectric model, and the operating frequency is 10MHz, which is several orders of magnitude lower than the operating frequency of high-frequency electronic equipment. Therefore, it is impossible to directly apply the high-frequency electromagnetic method to electronic Calculation of Surface Displacement Current of Equipment
In addition, the basic calculation idea of ​​the high-frequency electromagnetic method is that the normalized electromagnetic response can be obtained by subtracting the normalized total magnetic field from the primary field in free space. This equivalent calculation method can only obtain the displacement current The effect on the electromagnetic field cannot directly obtain the specific value of the displacement current, so it cannot be directly applied to the correction of the electromagnetic transmission theory of existing electronic equipment

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  • Nonideal metal surface displacement current calculation method based on random wave model
  • Nonideal metal surface displacement current calculation method based on random wave model
  • Nonideal metal surface displacement current calculation method based on random wave model

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Embodiment Construction

[0088] Specific embodiments of the present invention will be described in detail below.

[0089] Such as figure 1 As shown, the non-ideal metal surface displacement current calculation method based on the random wave model includes the following steps:

[0090] (1) Determine the error information of the non-ideal metal surface topography;

[0091] (2) Establish a non-ideal metal surface topography error model;

[0092] (3) Connect an ideal current source at both ends of the non-ideal metal surface;

[0093] (4) Calculate the equivalent capacitance value between two adjacent peaks;

[0094] (5) Calculate the equivalent resistance value between two adjacent peaks;

[0095] (6) Calculate the voltage value ΔU between two adjacent peaks, the calculation formula is:

[0096] ΔU=U 0 |ΔA|, (1) where:

[0097] u 0 Indicates the peak voltage;

[0098] ΔA represents the phase difference between two peaks, ΔA=cos(ωt)-cos(ωt+k(n+1)d), ωt is the initial phase, k is the wave number;...

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Abstract

The invention relates to a nonideal metal surface displacement current calculation method based on a random wave model. The method comprises the following steps that 1, nonideal metal surface morphology error information is determined; 2, a nonideal metal surface morphology error model is built; 3, the two ends of the nonideal metal surface have access to ideal current sources; 4, the equivalent capacitance value between two adjacent wave peaks is calculated; 5, the equivalent resistance value between the two adjacent wave peaks is calculated; 6, the voltage value deltaU between the two adjacent wave peaks is calculated; 7, the displacement current value of the whole nonideal surface is calculated.

Description

technical field [0001] The invention belongs to the technical field of electromagnetic transmission, and in particular relates to a method for calculating the displacement current of a non-ideal metal surface based on a random wave model. Background technique [0002] Surface quality is one of the important technical performance indicators to measure the overall performance level of an electronic equipment. Surface quality not only directly affects the structural properties of electronic equipment such as rigidity, contact friction area, and welding quality, but also affects the transmission efficiency of electronic equipment. , mouth surface efficiency, radiation pattern gain, main lobe width and side lobe level and other electrical performance indicators. [0003] However, limited to the existing level of metal processing and manufacturing technology, the surface of electronic equipment cannot be absolutely smooth, and there will inevitably be some surface undulations. Th...

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Application Information

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IPC IPC(8): G06F17/50G01R19/00
CPCG01R19/00G06F30/20
Inventor 李娜张茜徐志超胡凡凡李鹏宋立伟
Owner XIDIAN UNIV
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