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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 on the traditional soft surface becomes a triangular sawtooth edge, or becomes an edge with a small protruding rectangle. This method can move the band gap to low frequencies and increase the bandwidth, but this method is also quite for increasing the width of a single metal strip

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

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Embodiment Construction

[0026] Step 1: Establish an electromagnetic soft surface (via hole on the side) model with two periods of open slot structure in CST (such as Figure 4 As shown), the model consists of three layers, from top to bottom are metal copper strips, FR4 dielectric substrate layer, ground layer, each metal strip is connected to the ground through a row of equidistant metal copper vias, and the thickness of the medium is h=1.6mm, metal via hole diameter D=0.5mm, and an air box whose height is 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. Electric boundaries (Et=0) are set on the upper surface of the layer and the lower surface of the formation respectively, and magnetic boundaries (Ht=0) are respectively set on the two sides of the metal copper strip direction, which are located on the two sides of the two vertical directions of the metal copper strip. Wave ports are se...

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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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