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Frequency-adjustable microwave absorber

An absorber, microwave technology, applied in electrical components, antennas, magnetic field/electric field shielding and other directions, can solve the problem that the absorption frequency cannot be changed, and achieve the effect of convenient processing, light weight and good absorption effect

Pending Publication Date: 2017-06-30
NANJING UNIV OF INFORMATION SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A single narrowband frequency will no longer apply
The fixed absorption frequency of the conventional absorber structure will not be changed

Method used

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Embodiment Construction

[0020] The present invention will be further described below in conjunction with the accompanying drawings.

[0021] like Figure 1-Figure 3 As shown, a frequency-tunable microwave absorber includes: a resonant unit group 1, a dielectric substrate 2, and an anti-transmission layer 3. A plurality of resonant unit groups 1 are arranged on the top surface of the dielectric substrate 2 at intervals, and the dielectric substrate 2 An anti-transmission layer 3 is provided on the back; the resonant unit group 1 includes: a first metal bar 11 and a second metal bar 12, the first metal bar 11 and the second metal bar 12 are arranged in parallel, the second Between a metal horizontal bar 11 and the second metal horizontal bar 12, multiple groups of first metal vertical bars 13 and second metal vertical bars 14 are arranged oppositely, each group of first metal vertical bars 13 and second metal vertical bars The ends of the strips 14 are connected via varactor diodes 15 .

[0022] Each...

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Abstract

The invention discloses a frequency-adjustable microwave absorber. The frequency-adjustable microwave absorber comprises a medium substrate, an anti-transmission layer and resonance unit sets, wherein the multiple resonance unit sets are arranged on a top surface of the medium substrate with intervals, a back surface of the medium substrate is provided with the anti-transmission layer, the resonance unit sets comprise first metal horizontal stripes and second metal horizontal stripes, the first metal horizontal stripes and the second metal horizontal stripes are parallelly arranged, multiple sets of first metal vertical stripes and second metal vertical stripes which are oppositely arranged are arranged between the first metal horizontal stripes and the second metal horizontal stripes, and tail ends of the first metal vertical stripes and the second metal vertical stripes are connected through a variable capacitance diode. The frequency-adjustable microwave absorber is advantaged in that equivalent capacitance can be changed through an applied inverse bias voltage, so absorption frequency can be continuously adjusted in a quite wide scope, the structure is simple and easy to process, the conformal effect is realized, and the microwave absorber has quite high engineering application values.

Description

technical field [0001] The invention relates to a microwave absorber with adjustable frequency, which belongs to the technical field of electromagnetic wave absorption. Background technique [0002] The new artificial electromagnetic structure absorber is composed of artificially designed units arranged according to certain rules, and uses the resonance characteristics of the artificial electromagnetic structure to achieve the function of absorbing electromagnetic waves. It has a wide range of applications in electromagnetic shielding, stealth, antenna engineering, etc. With the development of radio frequency hopping technology. A single narrowband frequency will no longer apply. The fixed absorption frequency of the conventional absorber structure will not be changed. Contents of the invention [0003] Purpose: In order to overcome the deficiencies in the prior art, realize a frequency-adjustable microwave absorber based on a new type of artificial electromagnetic stru...

Claims

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Application Information

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IPC IPC(8): H05K9/00H01Q17/00
CPCH01Q17/00H05K9/00H05K9/0056Y02D30/70
Inventor 王身云刘伟
Owner NANJING UNIV OF INFORMATION SCI & TECH
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