A dual-band frequency selective surface structure

By introducing a dual-layer coupling design of an aerogel layer and a rotationally symmetric metal structure into the frequency selective surface, the problems of insufficient angular stability and selectivity of the multi-frequency selective surface are solved, and stable transmission of electromagnetic waves and high selective shielding effect are achieved.

CN122136641APending Publication Date: 2026-06-02THE GENERAL DESIGNING INST OF HUBEI SPACE TECH ACAD
View PDF 0 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
THE GENERAL DESIGNING INST OF HUBEI SPACE TECH ACAD
Filing Date
2026-03-30
Publication Date
2026-06-02

AI Technical Summary

Technical Problem

Existing multi-frequency selective surface designs suffer from poor angular stability and poor out-of-band suppression, making it impossible to simultaneously achieve both angular stability and high selectivity.

Method used

An aerogel layer is used as the intermediate medium layer, and single-level frequency selective surface units sandwiched by ceramic layers and periodic metal structures are provided on both sides to form a double-layer coupling structure. Through rotationally symmetrical metal structure design and hot melt adhesive film bonding, stable transmission and high selectivity of electromagnetic waves are ensured.

Benefits of technology

It achieves stable transmission and high selectivity of electromagnetic waves under large angle incident conditions, effectively shields electromagnetic waves outside the operating frequency band, and improves the anti-interference capability of the antenna system.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN122136641A_ABST
    Figure CN122136641A_ABST
Patent Text Reader

Abstract

This application relates to a dual-band frequency selective surface structure, in which an aerogel layer serves as the intermediate dielectric layer, and two single-level frequency selective surface units are arranged on opposite sides. Each single-level frequency selective surface unit is formed by two ceramic layers sandwiching a periodic metal structure, thus forming a coupled structure of a dual-layer frequency selective surface. This coupled structure can improve the selectivity of the frequency response to electromagnetic waves, thereby effectively shielding electromagnetic waves outside the operating frequency band. The combination of ceramic and aerogel layers can ensure the transmission stability of electromagnetic waves during incident, maintaining a stable electromagnetic transmission response even when electromagnetic waves are incident at large angles. At the same time, it can achieve low-loss transmission of electromagnetic waves within the operating frequency band, effectively balancing the angular stability and high frequency selectivity of dual-band electromagnetic wave transmission. This solves the technical problems of existing multi-frequency selective surfaces having poor angular stability, poor out-of-band suppression, and the inability to simultaneously achieve both angular stability and high selectivity.
Need to check novelty before this filing date? Find Prior Art