Reflow-Soldered Antenna Element Mounting for Stable PCB Connection
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Solution Overview
Problem
Existing antenna devices face instability in the connection between the substrate and the antenna element, particularly when connected by hand soldering, which affects the quality of the connection.
Innovation Solution
The antenna device employs reflow soldering to connect the antenna element to the substrate, eliminating the need for hand soldering and reducing the amount of solder required, thereby stabilizing the connection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If hand soldering is used to connect the antenna element to the substrate, then the connection can be established, but the connection quality becomes unstable
Solution Approach 1:
The patent replaces the mechanical hand soldering process with an automated reflow soldering system. The antenna element is connected to the substrate through a standardized mounting structure that utilizes reflow soldering technology, eliminating the need for manual soldering operations and achieving stable, repeatable connection quality through automated thermal processing.
Solution Approach 2:
The patent changes the soldering process parameters from manual control to automated reflow processing. By controlling the thermal profile, solder temperature, and cooling rate through automated equipment, the connection quality becomes consistent and reliable, resolving the instability inherent in hand soldering while maintaining ease of manufacture through standardization.
2Reliability
If reflow soldering is used to connect the antenna element to the substrate, then the connection quality is stabilized, but the manufacturing process becomes more complex
Solution Approach 1:
The patent designs the antenna element mounting structure to be compatible with standard reflow soldering processes used in general electronics manufacturing. By adopting a universal mounting approach that aligns with existing PCB fabrication and assembly capabilities, the manufacturing process complexity is minimized while achieving stable connection quality through widely-available reflow soldering equipment.
3Strength
If screws are used to fix the holder to the substrate, then the antenna element can be securely mounted, but the antenna directivity is influenced
Solution Approach 1:
The patent extracts and removes the screw-based mounting mechanism from the antenna assembly. Instead of using screws to fix the holder to the substrate, the design employs a direct mount structure where the antenna element is soldered to the substrate, eliminating the mechanical fastening components that interfere with the antenna's electromagnetic radiation pattern and directivity characteristics.
Solution Approach 2:
The patent replaces permanent mechanical fastening with a solder joint that provides sufficient mounting strength for the application. The solder connection serves as a permanent, integrated bond that secures the antenna element without requiring separate mechanical fasteners, thereby eliminating the directivity interference caused by screw structures while maintaining adequate mounting strength.
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 stabilizes the connection quality between the substrate and the antenna element, reduces assembly time and costs, and minimizes the influence of screws on antenna directivity.
Implementation Method 1
an antenna element at least partially connected to the substrate by reflow soldering
Data Source
AI summary
An antenna device including a substrate; and an antenna element at least partially connected to the substrate by reflow soldering.