Slot structured artificial electromagnetic soft surface and construction method thereof

An electromagnetic soft surface, artificial electromagnetic technology, applied in circuits, electrical components, antennas, etc., can solve the problems of large period, increase the width of a single metal strip, and the influence of the soft surface band gap, and achieve simple structure and good decoupling effect. , The effect of low processing difficulty

Active Publication Date: 2016-07-06
UNIV OF ELECTRONIC SCI & TECH OF CHINA
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AI Technical Summary

Problems solved by technology

[0005] In order to solve the above problems, the existing technologies mainly include: (1) increase the period of the metal via, but the increase of the period is limited, and the period is too large, the soft surface band gap is seriously affected
(2) The edge of the metal strip o

Method used

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  • Slot structured artificial electromagnetic soft surface and construction method thereof
  • Slot structured artificial electromagnetic soft surface and construction method thereof
  • Slot structured artificial electromagnetic soft surface and construction method thereof

Examples

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[0026] Step 1: Establish an electromagnetic soft surface (vias on the side) model with a two-period slotted structure in CST (such as Figure 4 (Shown), the model consists of three layers, from top to bottom are metal copper strips, FR4 dielectric substrate layer, and ground layer. Each metal strip is connected to the ground through a row of equidistant metal copper vias. The dielectric thickness h=1.6mm, the diameter of the metal via D=0.5mm, and an air box with a height of 5 times the thickness of the dielectric substrate is set above the metal strip. The length and width of the air box are the same as the dielectric substrate layer. The upper surface and the lower surface of the stratum are respectively provided with electrical boundaries (Et=0), and magnetic boundaries (Ht=0) are respectively provided on the two sides of the metal copper strip direction, which lies in the two perpendicular directions of the metal copper strip. Wave ports are set on each side. Set the freque...

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Abstract

The invention relates to a miniature electromagnetic soft surface structure and a construction method thereof, belonging to the technical field of microwave. A slot array parallel to a metal via hole line is arranged on a metal strip and comprises slots, the slots are arranged on a straight line at equal distance, each via hole is provided with a corresponding slot, the geometric central line of the metal via hole and the corresponding slot is perpendicular to the metal via hole line, the metal via holes are not intersected with the slots, and the slots and the metal via holes are arranged in a range of the metal strip. Therefore, the width of the metal strip is reduced to a great extent, the structure is more miniature, and the decoupling effect between patch antennas is favorable.

Description

technical field [0001] The invention relates to a miniaturized electromagnetic soft surface structure and a construction method thereof, belonging to the field of microwave technology. Background technique [0002] The artificial electromagnetic soft surface can be regarded as a one-dimensional electromagnetic bandgap EBG (ElectromagneticBandGap) structure, which has the property of hindering the propagation of electromagnetic wave energy in a certain direction on the surface. Compared with the mushroom-type electromagnetic bandgap structure, this structure has the characteristics of more compact structure and better filtering effect, and is more conducive to the application of miniaturization. Therefore, the artificial electromagnetic soft surface is favored by people, and it has been widely used in the decoupling between array antennas, the enhancement of antenna efficiency, and the control of antenna back radiation. [0003] The traditional artificial electromagnetic sof...

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Application Information

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IPC IPC(8): H01Q1/52
CPCH01Q1/521H01Q1/523
Inventor 陈海燕邓有杰周佩恒谢建良邓龙江
Owner UNIV OF ELECTRONIC SCI & TECH OF CHINA
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