Rotated Antenna Array Layout With Consistent Port Positions
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Solution Overview
Problem
Existing antenna arrays face challenges in designing a beam-forming network (BFN) that is independent of the rotation of radiating elements, leading to complex and non-systematic designs.
Innovation Solution
An antenna array with a global coordinate system and local coordinate system for each antenna cell, where the antenna ports are positioned at the same coordinates in the local system, allowing the BFN to be designed systematically and independently of the radiating elements' rotation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the radiating elements are rotated independently in each antenna cell, then the polarization purity is enhanced and electromagnetic coupling is reduced, but the beam-forming network design becomes complex and non-systematic
Solution Approach 1:
The patent divides the antenna array into multiple antenna cells, where each cell contains radiating elements that can be independently rotated. This segmentation allows each cell to be optimized for polarization purity while maintaining overall array functionality through the modular structure.
Solution Approach 2:
The patent introduces a rotational degree of freedom for the radiating elements within each antenna cell, adding a dimensional aspect to the traditional planar array. This rotation capability enables independent polarization control without affecting the positional arrangement of the cells in the main array structure.
2Object-generated harmful factors
If the radiating elements are rotated independently in each antenna cell, then electromagnetic coupling is reduced, but the beam-forming network design becomes complex and non-systematic
Solution Approach 1:
By segmenting the array into independent antenna cells with rotatable elements, the patent isolates electromagnetic interactions within each cell. This reduces unwanted coupling between elements of different cells while allowing controlled coupling within each cell for beam forming.
Solution Approach 2:
The patent makes the radiating elements dynamically rotatable within each antenna cell, allowing the system to adapt element orientation to minimize electromagnetic coupling in different operational scenarios. This dynamic adjustment capability enables optimization of coupling characteristics.
3Ease of manufacture
If a systematic beam-forming network design is desired, then the design process is simplified, but the radiating elements must be constrained to fixed orientations
Solution Approach 1:
The patent segments the antenna system into standardized cells with fixed internal structures, allowing the beam-forming network to be designed systematically at the cell level. Each cell acts as a modular unit that can be replicated and arranged in various configurations.
Solution Approach 2:
The patent separates the orientation control function into a rotational degree of freedom within each cell, independent of the cell's position in the overall array. This allows the beam-forming network to maintain a systematic fixed-orientation design while the elements provide adaptability through rotation.
Data Source
AI summary
An antenna array that can include a plurality of antenna cells positioned in a global coordinate system of the antenna array. Each of the plurality of antenna cells has a respective local coordinate system and can include a radiating element having a predetermined angle of rotation defined in the global coordinate system and an antenna port coupled to the radiating element, the antenna port being positioned at a particular set of coordinates in the respective local coordinate system. The particular set of coordinates of the antenna port of each of the plurality of antenna cells can be the same.