A narrowband frequency-tunable energy-selective shielding antenna

By adjusting the dielectric constant and substrate thickness to improve the substrate structure, and combining frequency reconfigurability and protection structure, a narrowband frequency-tunable energy-selective protection antenna is realized. This solves the integrated design problem of frequency domain anti-out-of-band interference and energy domain protection against high-intensity irradiation field damage, and improves the actual operating frequency adjustment accuracy and engineering application of narrowband antennas.

CN122370701APending Publication Date: 2026-07-10NAT UNIV OF DEFENSE TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
NAT UNIV OF DEFENSE TECH
Filing Date
2026-04-09
Publication Date
2026-07-10

AI Technical Summary

Technical Problem

Existing technologies cannot achieve an integrated design that combines frequency domain anti-out-of-band interference and energy domain protection against high-intensity radiation field damage. Furthermore, the actual operating frequency of narrowband antennas is prone to deviating from the simulation frequency due to the instability of the dielectric substrate process, which affects engineering applications.

Method used

A narrowband frequency-tunable energy-selective shielded antenna is designed. By adjusting the dielectric constant and substrate thickness to improve the substrate structure, and combining the frequency reconfigurable structure and the shielding structure, joint frequency-energy domain control is achieved to ensure that the actual operating frequency of the antenna is adjusted to the simulation design frequency.

Benefits of technology

It achieves integrated capabilities of out-of-band interference immunity and in-band protection against high-intensity radiation field damage, reduces device cross-sectional dimensions, enhances equipment integration capabilities, and strengthens the engineering application versatility of narrowband antennas.

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Abstract

This invention proposes a narrowband frequency-tunable energy-selective protective antenna, belonging to the field of protective antenna technology. The antenna comprises a feeding structure and a radiating structure. The protective structure designed in this application is loaded at the feeding structure, and the frequency-tunable structure is loaded at the radiating structure. Generally, in the radiating operation state, the feeding current is injected through the feeding structure and guided to the radiating structure. Energy excites a specific current distribution on the radiating structure, thereby radiating electromagnetic waves into free space. This invention achieves the design of a narrowband tunable energy-selective protective antenna based on joint frequency-domain and energy-domain control, realizing an integrated capability of resisting out-of-band interference and preventing damage from high-intensity irradiation fields in the antenna structure.
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