Monolithic Planar Waveguide Combiner for Compact Antenna Arrays
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Solution Overview
Problem
Conventional hollow metal waveguide antennas and RF components 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 development of improved antenna arrays using novel waveguide structures, such as hollow single ridge and dual-ridge waveguides, combined with metal additive manufacturing techniques, allows for the creation of compact, high-performance antenna arrays with integrated transitions and combiners that optimize energy transmission and reception while reducing losses.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If traditional multi-piece fabrication methods are used for hollow metal waveguide antennas, then ease of manufacture is improved, but device complexity and part count increase leading to reduced performance and higher costs
Solution Approach 1:
The patent combines multiple separate waveguide components (combiners, diplexers, transitions) into a single monolithic integrated structure fabricated from one continuous piece of metal using additive manufacturing. This eliminates the need for multiple discrete parts, flanges, and interfaces, thereby reducing device complexity and part count while maintaining manufacturability through advanced fabrication processes
2Ease of manufacture
If traditional multi-piece fabrication methods are used, then ease of manufacture is improved, but size and weight increase reducing antenna gain performance
Solution Approach 1:
By merging multiple waveguide components into a single monolithic structure, the patent eliminates redundant material and structural overhead associated with multiple separate parts. The integrated design reduces total weight while maintaining the functional capabilities of combiners, diplexers, and transitions within a compact form factor
Solution Approach 2:
The monolithic waveguide structure employs nested internal pathways and channels that allow multiple signal paths to be contained within a single compact volume. This nesting approach enables complex multi-functional operation without increasing external dimensions or weight, achieving high integration density
3Ease of manufacture
If traditional multi-piece fabrication methods are used, then ease of manufacture is improved, but signal losses increase due to multiple interfaces and seams
Solution Approach 1:
The monolithic integration of waveguide components eliminates all physical interfaces, flanges, and seams between separate parts. This continuous structure removes the sources of signal reflection and loss that occur at junctions, achieving superior signal integrity while maintaining manufacturing feasibility through additive processes
4Ease of manufacture
If conventional fabrication methods are used, then manufacturing simplicity is improved, but antenna gain and performance are reduced
Solution Approach 1:
The monolithic structure integrates multiple RF functions (combining, filtering, transitioning) into a single seamless component, eliminating performance-degrading interfaces and reducing total path length for signals. This integration achieves superior RF performance and reliability while maintaining manufacturing simplicity through advanced additive fabrication techniques
Data Source
AI summary
Antenna arrays comprising planar combiner networks. An apparatus includes a first antenna component comprising a first multiplexer and a second antenna component comprising a second multiplexer. The apparatus is such that the first antenna component is located next to the second antenna component within an antenna array and the apparatus is disposed within a lattice spacing of the antenna array.