Frequency selective surface structure

Abstract

The invention discloses a frequency selective surface structure. The frequency selective surface structure unit comprises a dielectric substrate (1), a square ring array (2) and metal strips (3), wherein the square ring array (2) is arranged on a dielectric plane of the dielectric substrate (1) and comprises sealed square ring metal lines (21) and gap square ring arrays (22), the sealed square ring metal lines (21) are arranged at four strip edges of the dielectric substrate (1), the gap square ring arrays (22) are arranged in the sealed square ring metal lines (21), share same center with the sealed square ring metal lines (21) and are sequentially arranged, the gap square ring arrays (22) are provided with two diagonal line gaps which are crossed, each gap square ring of the gap square ring arrays (22) is divided into four metal lines (221) in different directions by the diagonal line gaps, the metal strips comprise first metal strips (31), the first metal strips (31) perpendicularly intersect with the sealed square ring metal lines (21) and each metal line (221) of the gap square ring arrays (22) in a corresponding direction.

Description

technical field [0001] The invention relates to the communication field, in particular to a frequency selective surface structure unit and a frequency selective surface structure formed therefrom. Background technique [0002] In the process of implementing the technical solutions of the embodiments of the present application, the inventors of the present application at least found the following technical problems in the related art: [0003] With the rapid development of wireless communication, whether it is radar, electronic countermeasure technology, or personal communication system, its rapid development has played a role in promoting the microwave field. In many fields, a system is required to select the frequency of specific electromagnetic waves, such as: microwave filters, shielded boxes and shielded rooms, simple dipole frequency selective surfaces, etc. [0004] Among them, there are many types of microwave filters, including filters composed of lumped parameters,...

AI Technical Summary

Problems solved by technology

Although shielding boxes and shielding rooms can achieve the function of shielding electromagnetic waves, the frequency of shielding is not selective, and they occupy a large volume and are expensive

The simple dipole frequency selective surface has frequency selective characteristics for specific electromagnetic waves. Due to its simple structure, it shows different transmission characteristics for electromagnetic waves incident at different angles, and its stability is poor, and its frequency selective surface structure size is relatively small. Large, can not achieve the effect of miniaturization

[0005] It can be seen that none of the existing frequency selectors can meet the requirements of miniaturization, and the general frequency selection surface is a half-wavelength resonator. In actual design and application, it is impossible to make the size large enough to meet the resonance at a specific frequency; Therefore, there is an urgent need for a miniaturized frequency-selective surface structure, which can meet the needs of miniaturization while having frequency-selective properties.

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