Shielded Board Connector Layout for RF and Signal Contact Isolation
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Solution Overview
Problem
Conventional board connectors face issues with RF signal interference, inadequate RF signal shielding, and exposed mounting parts, leading to increased PCB size and reduced electromagnetic compatibility.
Innovation Solution
The board connector incorporates asymmetrical RF contacts, a ground housing, and ground contacts with elastic ground arms to minimize interference and enhance shielding, using a ground housing and ground contacts to prevent electromagnetic interference and improve electromagnetic compatibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If RF contacts are spaced closely to reduce connector size, then device miniaturization is achieved, but RF signal interference increases
Solution Approach 1:
Ground contacts are introduced as intermediary elements between RF contacts to shield and isolate them from each other. The ground contacts act as mediators that block electromagnetic interference while allowing the RF contacts to be positioned closer together, thus reducing connector size without compromising signal integrity.
Solution Approach 2:
The connector structure implements local quality by providing shielding specifically in the regions between RF contacts where interference occurs. The ground contacts are strategically positioned to create localized electromagnetic shielding zones, allowing different parts of the connector to have different functional properties - RF transmission in contact areas and electromagnetic shielding in between.
2Object-affected harmful factors
If a ground housing is added to shield RF signals, then EMI shielding performance improves, but device complexity increases
Solution Approach 1:
The ground housing is merged with the insulating part to form an integrated structure. The insulating part serves dual functions: electrical insulation between contacts and structural support for the ground housing. This merging reduces the number of separate components and simplifies assembly while maintaining effective EMI shielding.
Solution Approach 2:
The ground housing serves multiple functions simultaneously: it provides EMI shielding for RF contacts, structural support for the connector assembly, and electrical isolation between different signal paths. This multi-functionality reduces the need for additional dedicated shielding components, thereby limiting the increase in device complexity.
3Ease of operation
If mounting parts are exposed to facilitate assembly, then ease of assembly is improved, but shielding effectiveness is reduced
Solution Approach 1:
The mounting parts are nested within the ground housing structure rather than being exposed on the outside. The ground housing encloses the mounting parts while still allowing access through openings or access points, creating a nested configuration that provides shielding while maintaining assembly accessibility.
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 design reduces RF signal interference, minimizes PCB size, and enhances EMI shielding performance by effectively shielding RF signals and circuit components, improving electromagnetic compatibility.
Implementation Method 1
a first ground contact coupled to the insulating part and shielding between a first RF contact from among the RF contacts and the transmission contacts; and a second ground contact coupled to the insulating part and shielding between a second RF contact from among the RF contacts and the transmission contacts
Data Source
AI summary
The present disclosure relates to a board connector comprising: a plurality of radio frequency (RF) contacts for transmitting an RF signal; an insulating part supporting the RF contacts; a plurality of transmission contacts coupled to the insulating part; a ground housing having the insulating part coupled thereto; a first ground contact coupled to the insulating part and shielding between a first RF contact from among the RF contacts and the transmission contacts; and a second ground contact coupled to the insulating part and shielding between a second RF contact from among the RF contacts and the transmission contacts, wherein the first ground contact comprises a first shielding member shielding between the first RF contact and the transmission contacts with respect to a first axial direction and shielding between the first RF contact and the transmission contacts with respect to a second axial direction perpendicular to the first axial direction.