Board-to-Board Plug Structure for Multi-Antenna Signal Integrity
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Solution Overview
Problem
Conventional single-channel radio-frequency connectors are inadequate for multi-antenna signal transmission in 5G communication, as they complicate terminal strip cutting, soldering, and ensure unreliable contact between plugs.
Innovation Solution
A board-to-board plug design featuring an insulating seat, metal insert, conductive terminals, and shielding housing, where the insulating seat and metal insert are formed as one piece, with reinforcing structures to prevent damage and simplify soldering, and an isolation assembly to enhance signal integrity and reduce interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional single-channel radio-frequency connectors are used, then the structure is simple, but multi-antenna signal transmission requirements cannot be met
Solution Approach 1:
The connector is divided into multiple independent terminal slots (first terminal slot, second terminal slot, third terminal slot) within a single connector body, allowing multi-channel signal transmission while maintaining a unified structural framework. Each terminal slot can independently accommodate antenna signals, achieving versatility without proportionally increasing overall complexity
Solution Approach 2:
Multiple terminal slots and conductive terminals are nested within the insulating seat structure, with the metal insert and conductive terminals integrated into the insulating body. This nested arrangement allows multi-functional capability while compacting the overall structure, preventing linear growth in device complexity
2Ease of manufacture
If terminal strips are cut and soldered in conventional methods, then connections can be established, but the manufacturing process becomes complex and soldering becomes difficult
Solution Approach 1:
The metal insert and insulating seat are integrated into a one-piece structure through injection molding, combining what would traditionally be separate components into a single manufacturing step. The conductive terminals are formed as integral parts of this unified structure, eliminating the need for separate terminal strip cutting, bending, and soldering operations, thereby simplifying the manufacturing process
Solution Approach 2:
The conductive terminals are self-formed during the injection molding process of the insulating seat, with metal inserts automatically positioned and integrated. The structure self-assembles the terminal connections without requiring external manual operations for terminal strip preparation, reducing manufacturing complexity
3Strength
If reinforcing arm portion is made of plastic only, then manufacturing is simple, but damage occurs during plugging operation
Solution Approach 1:
The reinforcing arm portion is constructed as a composite structure combining plastic (insulating material) and metal (conductive terminal). The metal insert is embedded within the plastic matrix, creating a composite component that leverages the strength and rigidity of metal while maintaining the insulating and molding advantages of plastic. This composite approach enhances mechanical strength without requiring entirely metal construction, balancing performance and manufacturability
Data Source
AI summary
A board-to-board plug, comprising an insulating seat (20) integral to a metal insert (30), several signal terminals (40) arranged inside the insulating seat (20), and a shielding housing (10) coated outside the insulating seat (20). The insulating seat (20) comprises an engagement end (21) provided with terminal slots (214), terminal blocks (24) formed by extending from the engagement end (21) to the rear direction, and a pair of extension arms (22) formed by extending from both transverse sides of the terminal block (24) to the rear direction. The metal insert (30) comprises a board body portion (31) formed between a pair of extension arms (22), and several grounding terminals (37) bent from the front end of the board body portion (31) and extending into the terminal slots (214). The grounding terminals (37) and the signal terminals (40) are arranged at intervals.