OAM Radiator Position Adjustment for Transmission Efficiency
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Solution Overview
Problem
The existing techniques for adjusting antenna directions in radio transmission systems, particularly for OAM transmission, are inadequate in improving transmission efficiency due to the rapid spreading of OAM electromagnetic waves in the far field, limiting the effectiveness of antenna alignment adjustments.
Innovation Solution
A control apparatus and method that sequentially change the relative position between the radiator and the focal point of the reflecting mirror, using a feedback signal to optimize the alignment for improved reception quality, allowing for the adjustment of the relative position between the radiator and the focal point of the transmitting-side reflecting mirror to enhance OAM transmission efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the position of the radiator is moved closer to the reflecting mirror to adjust direction, then the direction can be adjusted, but the directivity becomes low and transmission efficiency cannot be improved
Solution Approach 1:
The patent applies dynamics by making the radiator position adjustable rather than fixed. The control unit dynamically changes the radiator's position relative to the reflecting mirror during operation, allowing the system to adapt to different transmission distances and conditions. This dynamic adjustment enables optimization of both direction control and transmission efficiency depending on the operational context.
Solution Approach 2:
The patent changes the positional parameter of the radiator relative to the reflecting mirror. By varying this parameter (distance between radiator and mirror), the system can optimize performance for different scenarios. The control unit adjusts this parameter based on feedback about reception quality, thereby resolving the contradiction between direction adjustment capability and transmission efficiency.
2Ease of operation
If antenna direction adjustment is used in OAM transmission, then direction control is possible, but transmission efficiency cannot be improved due to rapid wave spreading in far field
Solution Approach 1:
The patent implements a feedback mechanism where the reception apparatus sends back information about reception quality to the transmission apparatus. The control unit uses this feedback to automatically adjust the radiator's position, creating a closed-loop control system. This feedback-driven adjustment optimizes transmission efficiency by continuously adapting to actual reception conditions, overcoming the limitation of simple directional control.
Solution Approach 2:
The system performs self-optimization through automatic feedback-based adjustment. Rather than requiring manual intervention for each transmission condition, the control unit autonomously adjusts the radiator position based on reception feedback, enabling the system to self-optimize transmission efficiency while maintaining direction control capability.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach significantly improves the transmission efficiency of OAM transmission by optimizing the alignment of antennas based on feedback signals, effectively addressing the limitations of existing methods by enhancing the reception quality and reducing wave spreading in the far field.
Implementation Method 1
a transmitting-side reflecting mirror configured to reflect the OAM radio signal emitted from the radiator toward an OAM reception apparatus
Implementation Method 2
a receiving-side reflecting mirror configured to reflect an OAM radio signal emitted from a radiator in an OAM transmission apparatus, reflected by the transmitting-side reflecting mirror, and transmitted from the OAM transmission apparatus
Data Source
AI summary
In a transmitting-side control apparatus (30), a transmission control unit (32) controls a radiator (11) to transmit an OAM known signal formed by one common OAM transmission mode at each of transmitting-side relative position candidates. An acquisition unit (33) acquires a feedback signal including information about a use transmitting-side relative position based on a reception strength of the OAM known signal transmitted under the control of the transmission control unit (32). An adjustment unit (34) adjusts a relative position between the radiator (11) and a focal point of a reflecting mirror (12) to the use transmitting-side relative position indicated by the information included in the feedback signal.