A reflector based on ultra-wide stopband frequency selective surface

Abstract

The invention discloses a reflecting plate based on an ultra-wide stopband frequency selective surface and belongs to the technical field of communication. The reflecting plate based on an ultra-wide stopband frequency selective surface is used for solving the problem of relatively narrow stopband of an existing reflecting plate, and comprises m*n frequency selective surface units (1) and a dielectric substrate (2), wherein the frequency selective surface units (1) are printed on the dielectric substrate (2) and periodically distributed along the X axis and the Y axis. Each frequency selective surface unit (1) is composed of a zigzag cross-shaped patch (3) in the middle of which a quadrilateral gap (5) is formed and four circular ring patches (4) of which the outer radiuses are reduced in an equal ratio; the four circular ring patches (4) are located directly between the every two adjacent arms of the zigzag cross-shaped patch (3), respectively, and distributed periodically in a clockwise or anticlockwise order. The reflecting plate based on the ultra-wide stopband frequency selective surface has the advantages of expanding the stopband width of the reflecting plate and realizing sharp drop of the two-end transmission coefficients of the stopband; the transmission of the electromagnetic waves of other frequency bands is guaranteed while the radiation characteristic of the ultra-wideband antenna is guaranteed; in short, the reflecting plate is applicable to an ultra-wideband directional radiating antenna.

Description

technical field

[0001] The invention belongs to the technical field of communication, and relates to a reflector based on an ultra-wide stop band frequency selective surface, in particular to an ultra-wide stop band frequency selective surface reflector for directional radiation ultra-wideband antennas. The invention can be used in satellite communication, mobile communication, ultra-wideband reflector antenna and the like. Background technique

[0002] As an indispensable component in UWB radio systems, UWB antennas play a pivotal role in UWB technology. There are various forms of UWB antennas, such as planar monopole antennas, helical antennas, exponentially tapered slot line antennas, etc. In actual engineering, directional radiation is often required to ensure the quality of transmission and reception, so an additional reflector is usually used Make the UWB antenna directional radiation or further strengthen the directivity of the directional antenna. At present, commo...

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