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An Ultra-Wideband Electromagnetic Absorbing Structure

An electromagnetic wave absorbing and ultra-broadband technology, applied in electrical components, antennas, etc., can solve the problems of limited application scope and little increase in bandwidth, and achieve the effect of ultra-broadband wave absorption.

Active Publication Date: 2018-02-02
东莞市三航军民融合创新研究院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] However, both frequency selective surfaces and metamaterials are resonant structures, so they both operate in narrowband
Although lossy materials and multi-harmonic methods can be used to increase the absorption bandwidth, the increase in bandwidth is not large, which limits their application range to a certain extent.

Method used

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  • An Ultra-Wideband Electromagnetic Absorbing Structure
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  • An Ultra-Wideband Electromagnetic Absorbing Structure

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Embodiment Construction

[0019] The present invention will be further described below in conjunction with the accompanying drawings and embodiments, and the present invention includes but not limited to the following embodiments.

[0020] The electromagnetic absorbing structure is composed of a metal floor, an air layer, a tightly coupled array and a dielectric coating; the air layer is located between the metal floor and the tightly coupled array, and the tightly coupled array is arranged on the lower surface of the dielectric coating; the tightly coupled array is arranged periodically Composed of symmetrical vibrators; a resistor is welded to the center of each symmetrical vibrator (the matching resistance is given according to the input impedance of the center), and adjacent symmetrical vibrators are connected together through finger capacitance.

[0021] A tightly coupled array antenna can be implemented using a tightly coupled dipole antenna array, such as figure 1 shown. Will figure 1 The feed...

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Abstract

The invention provides an ultra-broadband electromagnetic wave-absorbing structure, an air layer is separated between the metal floor and the dielectric coating, and the tightly coupled array is arranged on the surface of the dielectric coating close to the metal floor; the tightly coupled array It consists of periodically arranged symmetrical vibrators; the center of each symmetrical vibrator is connected to a resistor whose resistance value matches the central input impedance of the symmetrical vibrator, and the vibrator arms of adjacent symmetrical vibrators are connected through interpolated capacitors. The invention is designed based on the tightly coupled array technology and has the characteristics of ultra-wideband.

Description

technical field [0001] The invention belongs to the technical field of electromagnetic wave-absorbing structures, and in particular relates to an ultra-broadband electromagnetic wave-absorbing structure based on tightly coupled array technology. Background technique [0002] Electromagnetic absorbing materials can be divided into coating type and structural type. Coated absorbing materials are coatings formed by mixing absorbents such as powders and fibers with absorbing properties and binders. Structural absorbing materials have two functions of absorbing and carrying objects. Common structural absorbing materials include Salisbury screen, Jaumann absorbing body, geometric gradient absorbing body, honeycomb absorbing structure, corrugated structure and periodic absorbing structure, etc. . [0003] Periodic absorbing structures are usually realized by lossy frequency selective surface (Frequency Selective Surface, FSS) or electromagnetic metamaterial (Metamaterial) technol...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01Q17/00
Inventor 吴昌英侯翔耀司马雷雷李建周
Owner 东莞市三航军民融合创新研究院
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