A vortex electromagnetic wave beam dual-mode detection method combining amplitude and vortex phase information
By combining amplitude and phase information to detect the modal values of vortex electromagnetic beams, the problem of excessive mode matching in traditional methods is solved, achieving efficient and interference-resistant dual-mode detection and improving the communication performance of vortex electromagnetic waves.
CN116223923BActive Publication Date: 2026-07-21UNIV OF ELECTRONICS SCI & TECH OF CHINA +1
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Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- UNIV OF ELECTRONICS SCI & TECH OF CHINA
- Filing Date
- 2023-03-13
- Publication Date
- 2026-07-21
AI Technical Summary
Technical Problem
Existing OAM beam mode detection methods involve too many mode matching attempts, resulting in low signal demodulation efficiency and limiting the performance of vortex electromagnetic wave communication.
Method used
By combining amplitude information and vortex phase information, the average value of the vortex phase gradient of the received beam is extracted. Peak filtering is used to count the number of peaks, and the mode value of the dual-mode hybrid vortex electromagnetic beam is directly detected, avoiding the mode matching process.
Benefits of technology
It achieves efficient detection of mode values of dual-mode hybrid OAM beams, improves detection efficiency, has good anti-interference ability, and enhances communication performance.
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Figure CN116223923B_ABST
Abstract
The present application relates to electromagnetic vortex wave carries the detection technology of orbital angular momentum OAM dual-mode beam, provide a kind of OAM dual-mode beam identification method based on amplitude information and vortex phase information, for the existing OAM research mainly uses vortex beam vortex phase to extract modal information, and less attention to amplitude information problem, first by calculating the average of received beam dual-mode phase gradient and then extract lower modal value, secondly, the modal related information is mapped to the amplitude information by a certain transformation, the peak filtering is carried out to the received mixed beam, and the peak number is extracted, which is equal to the numerical difference between the two modes, and the peak number after peak filtering is counted, the amplitude information and vortex phase information of the beam are combined, and the modal number of the detected beam is obtained, which solves the modal detection problem of dual-mode mixed OAM beam.
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