Frequency selective surface structure
A frequency-selective surface and slit technology, which is applied to waveguide devices, electrical components, circuits, etc., can solve the problems of poor polarization stability of frequency-selective surfaces, and achieve the effect of improving spatial filtering performance and good polarization stability
Inactive Publication Date: 2018-01-05
X TRIP INFORMATION TECH CO LTD
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Problems solved by technology
[0003] In order to overcome the above-mentioned technical defects, the present invention provides a frequency selective surface structure composed of a non-resonant unit and a resonant unit, aiming to solve the problem of poor polarization stability of the existing frequency selective surface
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[0028] In order to further illustrate the technical means and effects of the present invention to achieve the above objectives, the specific implementation, structure, features and effects of the present invention will be described in detail below in conjunction with the accompanying drawings and preferred embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0029] refer to figure 1 and figure 2 as shown, figure 1 is a three-dimensional structure diagram of a preferred embodiment of the frequency selective surface structure of the present invention; figure 2 is a cross-sectional view of a preferred embodiment of the frequency selective surface structure of the present invention. In this embodiment, the frequency selective surface structure includes an upper dielectric layer 1 , an air dielectric layer 2 and a lower dielectric layer 3 , and the upper dielectri...
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The invention discloses a frequency selective surface structure. The frequency selective surface structure comprises an upper dielectric layer, an air dielectric layer and a lower dielectric layer, wherein the upper dielectric layer comprises a first dielectric plate and a second dielectric plate, non-resonant inductive metal wire gratings are etched on an upper surface of the first dielectric plate and a lower surface of the second dielectric plate, a resonant layer is etched on an upper surface of the second dielectric plate, the first dielectric plate and the second dielectric plate are cascaded by the resonant layer, the resonant layer comprises a plurality of hybrid resonators, each hybrid resonator comprises a metal sheet and a Jerusalem cross unit, the Jerusalem cross unit comprisesa cross hollow groove and eight spiral gap structure units, the cross hollow groove is etched in the metal sheet, one of the spiral gap structure units vertically communicates with each of a left side and a right side of each tail end of the cross hollow groove, the structure of the lower dielectric layer is same as that of the upper dielectric layer, and the upper dielectric layer is cascaded with the lower dielectric layer via the air dielectric layer. The frequency selective surface structure provided by the invention has favorable resonant performance and polarization stability.
Description
technical field [0001] The invention relates to the technical field of electromagnetic field and microwave communication, in particular to a frequency selective surface structure formed by combining a non-resonant unit and a resonant unit. Background technique [0002] Frequency Selective Surfaces (FSS for short) is a two-dimensional periodic structure, which is composed of metal patches periodically arranged on the surface of a medium or slot units periodically arranged on a metal screen, and has a band for electromagnetic waves passing through the structure. Pass (patch) or band-reject (gap) effect, it is equivalent to a spatial filter, with good frequency selectivity, simple production and realization, and other excellent performances. It is often used to make radomes to achieve radar antenna shielding and stealth in aerospace. It can be used as a secondary reflector for antennas, and can also be used as polarization selectors and polarization separators for satellite com...
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IPC IPC(8): H01Q15/00H01P7/08
CPCH01P7/08H01Q15/00
Inventor 李庆娅邓力李书芳张贯京葛新科张红治
Owner X TRIP INFORMATION TECH CO LTD