Antenna polarisation
The double-layer dipole array with anisotropic spatial properties addresses angular stability issues in conventional converters, ensuring consistent conversion of linear to circular polarisation across varying angles and frequencies, thereby improving converter performance.
Patent Information
- Authority / Receiving Office
- GB · GB
- Patent Type
- Patents
- Current Assignee / Owner
- BAE SYSTEMS PLC
- Filing Date
- 2021-05-21
- Publication Date
- 2026-07-02
AI Technical Summary
Conventional linear-to-circular polarisation converters exhibit poor angular stability due to significant variation in the relationship between the axial ratio of the reflected wave and frequency with the angle of incidence, limiting their widespread application.
A double-layer dipole array structure with anisotropic spatial properties, featuring different periodicity and spacing along different axes, and lateral displacement of dipole elements, is employed to enhance angular stability.
The anisotropic array structure improves angular stability, maintaining consistent conversion of linearly polarised radiation to circularly polarised radiation across varying angles and frequencies, reducing the need for precise angular alignment and enhancing converter performance.
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