Rydberg atom electromagnetic direction finding air chamber with convex side wall cylindrical structure

By designing a Rydberg atom electromagnetic direction finding gas cell with a cylindrical structure with convex sidewalls, the problem of unclear relationship between the electromagnetic wave incident direction and the AT splitting interval in existing gas cell structures was solved, and high-precision measurement of the electromagnetic wave direction was achieved.

CN122410141APending Publication Date: 2026-07-17PLA PEOPLES LIBERATION ARMY OF CHINA STRATEGIC SUPPORT FORCE AEROSPACE ENG UNIV
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Patent Information

Application Number
CN202610645648.7
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-05-12
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Due to its high symmetry, the existing Rydberg atomic cell structure has a multi-valued and non-monotonic relationship between the AT splitting interval and the incident angle, resulting in low sensitivity and making it impossible to quickly and intuitively determine the direction of electromagnetic waves.

Method used

The Rydberg atomic electromagnetic direction finding gas cell adopts a cylindrical structure with convex sidewalls. The convex sidewalls are arc-shaped and uniform in thickness, with a non-circular cross-section. The end walls match the convex sidewalls. The inner cavity is filled with alkali metals and inert gases and encapsulated by glass thermoforming. The asymmetric convex sidewalls are designed to introduce strong direction-dependent scattering and interference, forming sharp electric field intensity peaks.

Benefits of technology

The accuracy of electromagnetic direction finding has been improved by creating a unique and sharp maximum electric field strength in the air chamber, achieving high sensitivity resolution of electromagnetic wave direction and reducing measurement error.

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Abstract

The invention relates to the technical field of electromagnetic direction finding, in particular to a Rydberg atom electromagnetic direction finding air chamber with a convex side wall cylindrical structure, which comprises a convex side wall, the convex side wall is in an arc-shaped convex shape and is uniform in thickness, the cross section of the convex side wall is non-circular, and end walls matched with the end surfaces of the convex side wall in shape are respectively arranged at two ends of the convex side wall. The convex side wall and the end wall are made of transparent glass and form a closed inner cavity, and the inner cavity is filled with alkali metal atom gas and inert protective gas. Compared with a common symmetrical regular structure of a cylindrical air chamber, the problems that the relation between the incident direction of electromagnetic waves and A-T splitting intervals is not clear and there is no sharp peak value caused by a traditional symmetrical air chamber are solved, microwaves are refracted and converged towards the central axis through the outer convex curved surface, the electric field intensity of an atom detection central area can be directionally enhanced, and the detection precision is improved. The measurement error is reduced, and the precision of Rydberg atom electromagnetic direction finding is improved.
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