Shielded Board Connector With Movable Ground Wall for RF Isolation
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Solution Overview
Problem
Conventional board connectors face issues with RF signal interference, inadequate RF signal shielding, and exposure of mounting portions, leading to increased PCB mounting area and reduced electromagnetic compatibility.
Innovation Solution
The board connector includes RF contacts, transmission contacts, a ground housing, and ground contacts with movable arms for improved shielding, reducing RF signal interference and enhancing electromagnetic interference shielding performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If RF contacts are spaced apart at a relatively close distance to reduce connector size, then the PCB mounting area is reduced, but RF signal interference between the RF contacts occurs
Solution Approach 1:
A ground contact is introduced as an intermediary element positioned between adjacent RF contacts. This ground contact acts as a shielding barrier that blocks electromagnetic fields between the RF contacts, preventing signal interference while allowing the RF contacts to remain at close spacing for compact PCB mounting.
Solution Approach 2:
The connector is segmented into distinct functional zones by introducing ground contacts between RF contacts. This segmentation creates isolated electromagnetic zones around each RF contact, preventing interference while maintaining compact overall dimensions for reduced PCB mounting area.
2Object-affected harmful factors
If a ground housing with shielding portion is added to shield RF signals, then electromagnetic compatibility is improved, but the device complexity increases
Solution Approach 1:
The ground contact serves multiple functions simultaneously: it provides electromagnetic shielding between RF contacts, acts as a mounting support structure, and functions as an electrical ground reference. This merging of functions improves electromagnetic compatibility without proportionally increasing device complexity.
Solution Approach 2:
The ground housing structure is designed to perform multiple roles: shielding RF signals, providing mechanical support for contacts, and establishing electrical ground connections. This multi-functionality reduces the need for separate components, thereby improving electromagnetic compatibility while limiting complexity increase.
3Ease of operation
If mounting portions are exposed to the outside for easy assembly, then ease of operation is improved, but shielding of mounting portions is not achieved
Solution Approach 1:
The ground contact serves as an intermediary shielding element that extends to cover the mounting portions of RF contacts. This intermediary structure provides electromagnetic shielding for previously exposed mounting areas while maintaining assembly convenience through the same insertion mechanism.
Data Source
AI summary
The present disclosure relates to a board connector comprising: a plurality of RF contacts for transmitting radio frequency (RF) signals; an insulating portion supporting the RF contacts; a plurality of transmission contacts coupled to the insulating portion; a ground housing to which the insulating portion is coupled; and a first ground contact for providing shielding between the transmission contacts and a first RF contact among the RF contacts based on a first axial direction, wherein the ground housing includes: a ground side wall that surrounds the side surfaces of the inner space; a ground upper wall coupled to the ground side wall; and a first-1 movable ground inner wall coupled to the ground upper wall, and the first-1 movable ground inner wall is moved by being pressed with a ground contact of a counterpart connector that is inserted into the inner space.