Inset Antenna Structure for Compact Spatial Power Combining
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Solution Overview
Problem
Conventional spatial power-combining devices face challenges in achieving smaller sizes for higher frequency operation and improved manufacturability due to the presence of body structures bounding both ends of antenna structures, which limits size scaling and increases manufacturing complexity.
Innovation Solution
The antenna structures are arranged within inset portions of the body structures, allowing the coaxial waveguide section to engage with only one end, thereby eliminating the need for protrusions that bound both ends, enabling smaller sizes for higher frequency operation and improved manufacturability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If antenna structures are bounded by body structures on both ends, then mechanical stability is improved, but device size cannot be reduced for higher frequency operations
Solution Approach 1:
The body structure is segmented into two functional zones: an inset inner surface region that provides mechanical binding for the antenna structure, and a remainder region that extends outward to maintain overall structural stability. This segmentation allows the antenna to be bounded only where necessary while reducing overall device volume.
Solution Approach 2:
The body structure exhibits local quality variation through the inset inner surface configuration, where only specific portions (the inset regions) provide binding functions for the antenna structures. The remainder of the body structure has different geometric properties that maintain mechanical stability without constraining the antenna boundaries, enabling size reduction while preserving stability.
2Strength
If antenna structures are bounded by body structures on both ends, then structural support is improved, but manufacturability is reduced
Solution Approach 1:
The binding function is segmented from the overall body structure through the inset inner surface design. Only specific inset regions are involved in antenna binding, while the remainder of the body structure maintains structural support. This reduces manufacturing complexity by limiting the precise geometric constraints to localized areas.
3Volume of moving object
If antenna structures are positioned outside peripheral edges of body structures, then device size is reduced for higher frequency operation, but mechanical stability may be compromised
Solution Approach 1:
The body structure is designed with local quality variation where inset inner surfaces provide concentrated binding strength at specific locations. This allows antenna structures to be positioned outside peripheral edges for size reduction while the localized inset regions provide sufficient mechanical stability through optimized geometric configuration.
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 design allows for higher frequency operation with smaller sizes and improved manufacturability, enhancing the performance and efficiency of spatial power-combining devices by doubling the number of MMICs while maintaining mechanical stability and reducing manufacturing costs.
Implementation Method 1
an electromagnetic signal is passed through an input port to an input coaxial waveguide section of the spatial power-combining device. The input coaxial waveguide section distributes the electromagnetic signal to be split across the input antipodal antenna array
Implementation Method 2
The amplifiers receive the split signals and in turn transmit amplified split signals across the output antipodal antenna array
Data Source
AI summary
Power-combining devices and, more particularly, antenna structures for spatial power-combining devices are disclosed. Spatial power-combining devices include amplifier assemblies with amplifiers and antenna structures supported by body structures. Body structures may include inner surfaces that are closer to a center axis of the spatial power-combining device where the inner surfaces have peripheral edges that are inset from remainders of the body structures. Antenna structures are disclosed that are arranged within inset portions such that the antenna structures are bounded on one end by the body structures. When assembled, a portion of a coaxial waveguide section that engages with the amplifier assemblies may bound opposing ends of the antenna structures. By not having body structures bound both ends of antenna structures, amplifier assembly design may be improved to allow smaller sizes for higher frequency operation along with improved manufacturability.