Double-Shielding Board Connector for Compact RF Contact Isolation
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Solution Overview
Problem
Existing board connectors face challenges with RF signal interference, inadequate shielding between RF signals, and exposure of mounting parts, which hinder efficient signal transmission and electromagnetic compatibility in compact electronic device PCBs.
Innovation Solution
The proposed board connector incorporates a grounding housing with double-shielding walls to surround RF contacts, transmission contacts, and mounting members, ensuring complete shielding and reducing RF signal interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If RF contacts are closely spaced to reduce connector size, then the connector occupies less PCB area, but RF signal interference between contacts increases
Solution Approach 1:
The patent introduces a grounding contact as an intermediary element positioned between adjacent RF contacts. This grounding contact acts as a mediator that intercepts and redirects RF signals, preventing direct interference between neighboring RF contacts while allowing them to maintain close spacing for compact connector design.
Solution Approach 2:
The patent extracts the harmful RF signal component by introducing a dedicated grounding contact that specifically targets and removes interfering RF signals between adjacent RF contacts. This extracted grounding function is integrated into the contact structure, allowing RF contacts to be closely spaced without suffering from mutual interference.
2Device complexity
If a single shielding wall is used to reduce complexity, then manufacturing is simpler, but shielding effectiveness between RF signals is insufficient
Solution Approach 1:
The patent segments the shielding function into multiple independent grounding contacts, each positioned between specific pairs of RF contacts. This segmentation allows the shielding function to be distributed across multiple simple elements rather than requiring a single complex continuous shield, achieving effective RF signal isolation while maintaining structural simplicity.
3Ease of manufacture
If mounting parts are exposed to simplify assembly, then ease of assembly improves, but EMI shielding performance deteriorates
Solution Approach 1:
The patent merges the mounting function and the shielding function into a single integrated grounding contact structure. The grounding contact serves dual purposes: it provides mechanical mounting support for the connector assembly while simultaneously acting as an EMI shield between RF contacts, eliminating the need for separate exposed mounting parts.
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 configuration enhances electromagnetic interference (EMI) shielding performance and electromagnetic compatibility (EMC) by effectively shielding RF signals and preventing interference with circuit components, thereby improving signal integrity and device performance in limited PCB spaces.
Implementation Method 1
a grounding housing to which the insulating part is coupled. The grounding housing may include an inner grounding wall facing the insulating part, an outer grounding wall spaced apart from the inner grounding wall, and a grounding connection wall coupled to each of the inner grounding wall and the outer grounding wall
Data Source
AI summary
The present disclosure pertains to a board connector comprising a plurality of radio frequency (RF) contacts for transmitting RF signals; an insulating part supporting the RF contacts; a plurality of transmission contacts coupled to the insulating part and between a first RF contact and a second RF contact, such that the first RF contact and the second RF contact are spaced in a first axial direction; and a grounding housing to which the insulating part is coupled, the grounding housing comprising an inner grounding wall, an outer grounding wall spaced apart from the inner grounding wall, and a grounding connection wall coupled to each of the inner and outer grounding walls, wherein the inner and outer grounding walls are double-shielding walls that surround the side of an inner space, and the first RF contact and the second RF contact are placed in the inner space surrounded by the double-shielding walls.