Board-to-Board RF Plug with Metal Spacers for Crosstalk Reduction
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Solution Overview
Problem
Existing board-to-board radio frequency connectors face challenges with increased frequency requirements in 5G communication, particularly in terms of interference and crosstalk, and have substandard isolation issues.
Innovation Solution
A board-to-board radio frequency plug and receptacle design featuring a plug body with integrally formed plug terminals and metal spacers, wrapped in a shielding shell, which includes a substrate, cover plate, and buckling portions to enhance isolation and stability, allowing for better shielding and reduced interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a coaxial cable is used to transmit radio frequency signals, then signal transmission is achieved, but interference and crosstalk increase at higher frequencies
Solution Approach 1:
The connector is divided into multiple independent signal transmission paths with separate plug terminals and receptacle contacts, each isolated by metal spacers. This segmentation prevents interference and crosstalk between adjacent high-frequency signals while maintaining transmission capability.
Solution Approach 2:
Metal spacers are introduced as intermediary elements between adjacent plug terminals and receptacle contacts. These spacers act as shielding barriers that block electromagnetic interference and crosstalk, thereby improving signal transmission quality at high frequencies.
2Volume of moving object
If the connector dimension is reduced to be ultra-thin, then space is saved, but installation and disassembly operations become difficult
Solution Approach 1:
The connector achieves its thin profile in the vertical dimension while compensating by extending in horizontal dimensions through the insertion space design. The metal spacers extend horizontally between terminals, providing operational leverage while maintaining ultra-thin overall thickness.
Solution Approach 2:
The connector body is segmented into distinct functional regions including the insertion space, platform portion, and buckling portions. This segmentation allows each part to be optimized independently - the insertion space provides operational access while the overall structure remains ultra-thin.
3Object-affected harmful factors
If metal spacers are added between adjacent plug terminals to improve isolation, then interference is reduced, but device complexity increases
Solution Approach 1:
The metal spacers are merged with the plug terminals and receptacle contacts to form an integrated assembly. This combining approach provides signal isolation functionality without requiring separate components, thereby reducing overall device complexity while maintaining improved isolation performance.
Solution Approach 2:
The metal spacers serve multiple functions simultaneously: they provide electrical isolation between adjacent terminals, act as mechanical support structures, and contribute to the overall structural integrity of the connector. This multi-functionality reduces the need for additional components.
Data Source
AI summary
Provided is a board-to-board radio frequency plug, including a plug body; a plurality of plug terminals and a plurality of metal spacers integrally formed in the plug body; and a shielding shell wrapping the plug body and the plurality of plug terminals. The plug body comprises: a body base; a body outer-wall formed by integrally extending upward from a periphery of the body base; an island portion formed by integrally extending upward from middle of the body base; and an insertion space formed between the body outer-wall and the island portion. The plug terminals extend on an outer periphery of the island portion, each metal spacer is provided between two adjacent ones of the plurality of plug terminals, and each metal spacers penetrates through the island portion and the insertion space in a perpendicular direction. The present disclosure further provides a board-to-board radio frequency receptacle.