AESA Antenna Radiator Assembly Self-Alignment
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing active electronically scanned array (AESA) antennas face challenges in efficient assembly and maintenance due to complex radiator configurations, requiring precise alignment and multiple fasteners, which increases assembly time and costs while being prone to thermal expansion mismatches between materials.
Innovation Solution
A new radiator assembly design featuring self-aligned circulators through hollow rims and distinct through-holes, reduced fastener count, and modular components that allow for easy disassembly and reassembly, enabling efficient assembly and maintaining RF performance with minimal hardware modifications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If traditional radiator configurations are used with multiple fasteners and precise alignment requirements, then structural stability is improved, but assembly time and manufacturing complexity increase
Solution Approach 1:
The radiator assembly is divided into modular components including a radiator support, circulator assembly, and connector stick that can be manufactured separately and assembled together. This segmentation allows for simplified individual components that are easier to manufacture and assemble, reducing overall assembly time while maintaining structural integrity through designed interfaces between modules.
Solution Approach 2:
The circulator assembly incorporates self-aligning features such as hollow rims and distinct through-holes that automatically guide proper positioning during assembly. The connector stick design includes integrated alignment features that eliminate the need for complex external alignment tools or procedures, enabling the assembly to self-correct minor positioning variations and reduce assembly time.
2Stability of the object's composition
If traditional radiator configurations with multiple fasteners are used, then structural stability is improved, but device complexity increases
Solution Approach 1:
Multiple fastening and alignment functions are merged into integrated features of the connector stick and circulator assembly. The connector stick combines mechanical attachment, electrical connection, and alignment guidance into a single component that performs multiple functions simultaneously, reducing the number of separate parts and simplifying the overall assembly process.
Solution Approach 2:
The assembly features self-aligning mechanisms where the hollow rims and distinct through-holes of the circulator assembly automatically guide the connector stick into proper position during installation. This self-service alignment eliminates the need for complex external alignment procedures, specialized tools, or highly skilled assembly operations, thereby reducing device complexity.
3Adaptability or versatility
If materials with different thermal expansion properties are used in radiator assembly, then adaptability to thermal environments is improved, but manufacturing precision requirements increase due to alignment challenges
Solution Approach 1:
The design accommodates thermal expansion by allowing controlled movement and dimensional changes in the connector stick and circulator assembly components. The self-aligning features with hollow rims and distinct through-holes provide tolerance for thermal dimensional changes while maintaining proper alignment, enabling the assembly to adapt to thermal expansion mismatches between different materials without requiring excessive manufacturing precision.
4Ease of operation
If modular radiator components with self-aligned features are used, then ease of assembly is improved, but manufacturing precision of individual components increases
Solution Approach 1:
The modular component design separates the radiator system into distinct assemblies with standardized interfaces. The self-aligning features are built into these modular components during manufacturing, allowing for easier field assembly while the precision requirements are concentrated in the component fabrication process rather than the final assembly operation.
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
An antenna is provided and includes a plate and an aperture assembly attached to the plate. The aperture assembly includes sticks that respectively include a spacer, a carrier formed separately from the spacer and on which circulators are disposed, a base defining recesses from which bosses interleaved with the recesses protrude and fasteners disposed to fasten the spacer to the base at boss locations with the carrier interposed between the spacer and the base and the circulators aligned with the recesses. The aperture assembly further includes conductive elements extending through the plate and the base for electric coupling to the circulators. Adjacent sticks define a slot extending forwardly from the plate. The slot is notched at a corresponding circulator and rounded forwardly from the corresponding circulator.