Quasi-surface plasmon ultra-wide band low-scattering slot antenna

A surface plasmon and slot antenna technology, which is applied in the direction of slot antenna, antenna grounding switch structure connection, radiation element structure, etc., can solve the problems of difficult to balance antenna radiation and scattering characteristics, incident wave sensitivity, etc., and achieve improved scattering performance, effect of broadening beamwidth

Inactive Publication Date: 2017-04-26
AIR FORCE UNIV PLA
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Problems solved by technology

[0004] The purpose of the present invention is to provide a quasi-surface plasmon ultra-wideband low-scattering slot antenna, which aims to solve the problem that the existing quasi-surface plasmon structure in the microwave frequency band is very sensi

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[0050] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0051] In the present invention, by designing an ultra-thin circular gradual bilateral sawtooth symmetric structure, exciting the SSPP in the microwave frequency band, deeply analyzing the surface wave propagation and scattering characteristics under the SSPP mode condition, and then applying it to the antenna radiation surface, controlling the antenna scattering beam direction, broaden the beam width of the antenna, improve the scattering and radiation performance of the antenna, and realize the ultra-wideband low-scattering slot antenna of SSPP.

[0052] The application principle of the present invention will be described...

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Abstract

The invention discloses a quasi-surface plasmon ultra-wide band low-scattering slot antenna. Radiation apertures have circular structures in same area; the radius of a circle is r1=68mm; the thickness of a dielectric slab of an SSPP slot antenna is 1mm; a metal coats a rear feeding part covering an area of 20mm*40mm on the SSPP slot antenna; a 26mm*2mm gap is formed on a central position of the SSPP slot antenna; the rest positions are not coated with the metal; a dielectric constant of the dielectric slab is 2.65; the loss tangent is less than 0.001. The quasi-surface plasmon ultra-wide band low-scattering slot antenna is realized by the invention; the antenna has an obvious RCS (Radar Cross Section) reduction effect within 1GHz-10GHz; the maximum reduction volume of MRCS is 16.93dB or above; the relative bandwidth of the SSPP slot antenna is 9.4%; the frequency coverage is 5.25GHz-5.77GHz; compared with the traditional antenna, the SSPP antenna has the advantage that the beam width is at least widened for 65 degrees.

Description

technical field [0001] The invention belongs to the field of novel electromagnetic metamaterials and applications, in particular to an ultra-wideband low-scattering slot antenna of quasi-surface plasmons. Background technique [0002] Surface Plasmon Polaritons (SPP) is a surface electromagnetic wave mode, which usually exists on the surface of two materials with opposite dielectric constants. Because of its surface wave characteristics, electromagnetic waves (such as light waves) in certain frequency bands can be constrained to a subwavelength spatial extent. General surface plasmons mainly exist in nanostructures in the light wave band. The equivalent permittivity of an ideal conductor with a subwavelength small hole structure. When the electromagnetic wave is incident on the small hole, the attenuated waveguide mode of the small hole is excited. Only the fundamental mode that plays a leading role in supertransmission is considered. The calculation results show that: Ide...

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Application Information

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IPC IPC(8): H01Q1/36H01Q1/50H01Q13/10
CPCH01Q1/36H01Q1/50H01Q13/10
Inventor 李思佳曹祥玉高军陈巍周禹龙张晨韩彤
Owner AIR FORCE UNIV PLA
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