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Angle response adjustable frequency selective surface

A technology of surface selection and frequency modulation, applied to waveguide devices, radiation unit covers, electrical components, etc., can solve problems such as poor angular stability, and achieve the effect of solving poor angular stability

Active Publication Date: 2021-01-29
AIR FORCE UNIV PLA
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Problems solved by technology

[0005] The embodiment of the present invention provides a frequency selective surface with adjustable angular response, which effectively solves the problem of poor angular stability of the traditional frequency selective surface

Method used

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  • Angle response adjustable frequency selective surface
  • Angle response adjustable frequency selective surface
  • Angle response adjustable frequency selective surface

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Embodiment 1

[0027] Such as figure 1 and figure 2 As shown, the present invention provides a frequency selective surface with adjustable angle response, including: a first metal structure layer 1, a dielectric substrate layer 2 and a second metal structure layer 3, the first metal structure layer 1 and the second metal structure layer 3 Correspondingly arranged on the front and rear sides of the dielectric substrate layer 2, the first metal structure layer 1 and the second metal structure layer 3 are respectively composed of a plurality of periodic units arranged periodically, and the periodic units of the first metal structure layer 1 It is a well-shaped metal grid 10, and the periodic unit 30 of the second metal structure layer 3 includes: a square metal wire 303 and two feeding metal wires 302, and the two feeding metal wires 302 are arranged in parallel and symmetrically on the square metal wire The upper and lower sides of the two feeder metal wires 302 are respectively connected to...

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Abstract

The invention discloses an angle response adjustable frequency selective surface, and belongs to the technical field of electromagnetic wave frequency selective surfaces. A first metal structure layerand a second metal structure layer are correspondingly arranged on the front side face and the rear side face of a dielectric substrate layer, a periodic unit of the first metal structure layer is a#-shaped metal grid, and a periodic unit of the second metal structure layer comprises a square metal wire and two feed metal wires. The two feed metal wires are parallelly and symmetrically arrangedon the upper side and the lower side of the square metal wire, the middles of the two feed metal wires are connected with the upper side metal wire and the lower side metal wire of the square metal wire through the short metal wires respectively, openings are formed in the left side metal wire and the right side metal wire of the square metal wire, and the varactors are arranged in the openings. Two sides of the varactor diode are respectively connected with the metal wires on two sides of the opening. The problem that a traditional frequency selection surface is poor in angle stability is effectively solved.

Description

technical field [0001] The invention belongs to the technical field of electromagnetic wave frequency selective surfaces, in particular to a frequency selective surface with adjustable angle response. Background technique [0002] The frequency selective surface is a two-dimensional periodic structure composed of periodically arranged patch units or slot units. It exhibits frequency-selective filtering characteristics for the propagation of electromagnetic waves, that is, the selection characteristics change with frequency. For certain frequency bands The incident electromagnetic waves in the frequency band can all pass through, while the electromagnetic waves in other frequency bands can be completely reflected. Therefore, the frequency selective surface is also called the space electromagnetic filter, which is commonly used in the fields of hybrid radome stealth, electromagnetic compatibility and electromagnetic shielding. [0003] There are certain defects in the traditi...

Claims

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Application Information

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IPC IPC(8): H01Q15/00H01Q1/42H01P1/20
CPCH01Q15/002H01Q15/0026H01Q1/42H01P1/20
Inventor 闫明宝王甲富张介秋屈绍波王军郑麟随赛
Owner AIR FORCE UNIV PLA
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