Integrated Radiating Elements With Additive Waveguide Transitions
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Solution Overview
Problem
Conventional hollow metal waveguides in antennas face limitations due to traditional fabrication methods, leading to increased size, weight, and part count, which result in reduced performance and higher costs, especially when trying to achieve high gain and withstand demanding environmental conditions.
Innovation Solution
The use of additive manufacturing techniques to create coaxial waveguide to hollow waveguide structures and transitions, allowing for novel array geometries and integration with other RF components, enabling improved performance and reduced costs by optimizing waveguide cross-sections and impedance matching elements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If traditional fabrication methods are used for hollow metal waveguides, then manufacturing simplicity is maintained, but size, weight, and part count increase leading to reduced performance
Solution Approach 1:
The patent combines multiple waveguide components and transitions into a single integrated structure manufactured via additive manufacturing. This merging eliminates the need for separate flanges, interfaces, and seams that characterize traditional multi-piece assemblies, directly reducing assembly complexity while maintaining manufacturing precision through digital fabrication processes.
Solution Approach 2:
The additive manufacturing process enables a single fabrication method to produce multiple waveguide components with different functions (transitions, junctions, radiating elements) as an integrated assembly. This universal manufacturing approach replaces multiple specialized fabrication processes, reducing both assembly complexity and overall part count while maintaining high precision.
2Ease of manufacture
If multi-piece assembly is used for waveguide structures, then fabrication flexibility is maintained, but losses increase and gain performance decreases
Solution Approach 1:
By merging multiple waveguide sections into a single additively manufactured component, the patent eliminates seams and interfaces where signal losses typically occur. The continuous structure reduces reflections and impedance mismatches at joints, directly addressing energy loss while additive manufacturing provides the fabrication flexibility to create complex integrated geometries that would be difficult with traditional methods.
3Device complexity
If conventional waveguide structures are used, then design simplicity is maintained, but size and weight increase reducing antenna performance
Solution Approach 1:
The patent segments the waveguide structure into optimized sections with varying cross-sections and geometries that are tailored for specific functional requirements. Additive manufacturing enables this segmentation without requiring separate components, as the digital model can define complex internal and external geometries in a single build, reducing weight while maintaining structural integrity and electrical performance.
Solution Approach 2:
The patent utilizes three-dimensional geometry optimization enabled by additive manufacturing, transitioning from conventional two-dimensional cross-sections to complex 3D structures. This allows for weight reduction through optimized material distribution, internal lattice structures, and integrated features that provide structural support and electrical function simultaneously, achieving high performance with reduced weight.
4Ease of manufacture
If traditional fabrication methods are used, then manufacturing cost is controlled, but performance requirements cannot be met in demanding applications
Solution Approach 1:
The patent changes the manufacturing parameter from traditional subtractive or assembly-based methods to additive manufacturing. This parameter change enables the production of complex, optimized geometries that improve electromagnetic performance and reliability in demanding applications, while the digital nature of additive manufacturing maintains cost control through reduced material waste and elimination of complex assembly processes.
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 enhances the performance of antenna arrays by reducing losses and increasing energy transmission efficiency, while also reducing the physical size and weight of the assembly, thus addressing the limitations of traditional fabrication methods.
Implementation Method 1
a transition disposed between the hollow waveguide port and the two or more coaxial waveguide ports, wherein the transition combines or divides electromagnetic energy
Data Source
AI summary
Waveguides, transitions, and conductors for propagating electromagnetic energy. An assembly includes a waveguide transition device comprising two or more coaxial waveguides. The assembly includes a radiating component comprising two or more radiating elements configured to receive or transmit electromagnetic energy through two or more signal ears, wherein each of the two or more signal ears is in communication with a coaxial waveguide of the two or more coaxial waveguides.