A UWB Frequency Selective Surface for Radome Applications

A frequency selective surface, ultra-broadband technology, applied in the microwave field, can solve the problems of poor edge drop characteristics and high operating frequency band, and achieve the effect of small insertion loss, lower operating frequency, and reduced unit size

Active Publication Date: 2019-12-24
XIDIAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the shortcomings of the above-mentioned prior art, and provide an ultra-wideband frequency selective surface suitable for radome, which is used to solve the excessively high working frequency band and edge steep drop characteristics of the existing ultra-wideband frequency selective surface poor technical problem

Method used

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  • A UWB Frequency Selective Surface for Radome Applications
  • A UWB Frequency Selective Surface for Radome Applications
  • A UWB Frequency Selective Surface for Radome Applications

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] refer to figure 1 , the UWB frequency selective surface consists of 10×10 passive resonant units arranged periodically.

[0024] refer to figure 2 , the passive resonant unit includes an upper first dielectric board 1, an upper second dielectric board 3, a first foam interlayer 4, a middle dielectric board 6, a second foam interlayer 7, and a lower first dielectric board 8 stacked sequentially from top to bottom and the lower second dielectric plate 10, the upper surface center of the upper second dielectric plate 3 is printed with a first ring patch 2, the center of which is located at the center of the upper second dielectric plate 3, and the inner diameter is 6.8mm. The outer diameter is 7.2mm, and the center position of the upper surface of the middle dielectric board 6 is printed with a zigzag line patch 5 composed of four metal folding lines 51, and the four metal folding lines 51 are at the center point of the middle dielectric board 6 and are arranged in a 90...

Embodiment 2

[0026] Embodiment 2, the structure of this embodiment is the same as that of Embodiment 1, only the following parameters have been adjusted:

[0027] The thickness H1 of the upper first dielectric board 1, the upper second dielectric board 3, the middle dielectric board 6, the lower first dielectric board 8 and the lower second dielectric board 10 is H1=0.3mm, the side length D=14.8mm, and the dielectric constant is 2. The height H2 of the first foam interlayer 4 and the second foam interlayer 7 = 8.5mm, the inner diameter of the first ring patch 2 is 6.6mm, the outer diameter is 7mm, the first "L" shaped branch 511, its The short branch length L1=0.6mm, the long branch length L2=5mm, the long branch length L4=4.5mm of the wave-shaped broken line 512, the short branch length L6=4mm of the second "L" shaped branch 513, and the long branch length L5=5.4 mm, short branch length L7=0.8mm of the third "L" shaped branch 514, long branch length L8=4.9mm, short branch length L10=1mm o...

Embodiment 3

[0028]Embodiment 3, the structure of this embodiment is the same as that of Embodiment 1, only the following parameters have been adjusted:

[0029] The thickness H1 of the upper first dielectric plate 1, the upper second dielectric plate 3, the middle dielectric plate 6, the lower first dielectric plate 8 and the lower second dielectric plate 10 is H1=0.5mm, the side length D=15.5mm, and the dielectric constant is 2.6, the height H2 of the first foam interlayer 4 and the second foam interlayer 7=9.5mm, the inner diameter of the first ring patch 2 is 6.9mm, the outer diameter is 7.4mm, the first "L" shaped branch 511, Its short branch length L1=0.8mm, long branch length L2=5.7mm, the long branch length L4=5.1mm of the wave-shaped broken line 512, the short branch length L6=5.4mm of the second "L" shaped branch 513, and the long branch length L5=5.6mm, the short branch length L7=1mm of the third "L" shaped branch 514, the long branch length L8=6mm, the short branch length L10=1...

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Abstract

The invention proposes an ultra-wideband frequency selective surface suitable for an antenna housing. The Ultra-wideband frequency selective surface is used for solving the technical problems of over-high working frequency band and poor edge steep drop property of an existing ultra-wideband frequency selective surface. The ultra-wideband frequency selective surface comprises an upper-layer first dielectric plate, an upper-layer second dielectric plate, a first foam interlayer, a middle-layer dielectric plate, a second foam interlayer, a lower-layer first dielectric plate and a lower-layer second dielectric plate which are sequentially laminated from top to bottom, wherein a first ring patch is printed on a central position of the upper surface of the upper-layer second dielectric plate, azigzag line patch composed of four metal folding lines is printed on a central position of the upper surface of the middle-layer dielectric plate, the four metal folding lines are rotatably and symmetrically arranged at an angle of 90 degrees and are connected at a symmetry point, and a second ring patch is printed on a central position of the upper surface of the lower-layer second dielectric plate. The ultra-wideband frequency selective surface realizes the low-frequency ultra-wide transmission performance and the edge steep drop property, and can be applied to the design of antenna housingsof platforms such as a communication system, a radar and an aircraft.

Description

technical field [0001] The invention belongs to the field of microwave technology, and relates to an ultra-wideband frequency selective surface suitable for radome, which can be applied to the design of radome of platforms such as communication systems, radars and aircrafts. Background technique [0002] A frequency selective surface is a two-dimensional periodic surface that can reflect or transmit electromagnetic waves. It does not absorb energy itself, but can effectively control the reflection and transmission properties of electromagnetic waves. Frequency selective surfaces can be divided into two types according to the frequency response characteristics of electromagnetic waves: one is band-stop type frequency selective surface, which exhibits total reflection characteristics for electromagnetic waves in the stop band; the other is band-pass type frequency selective surface, It exhibits full transmission characteristics for electromagnetic waves in the passband. Due t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01Q15/00H01Q1/42
Inventor 洪涛赵强姜文谷越邢文博龚书喜刘英
Owner XIDIAN UNIV
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