Shielded Board Connector Layout for RF Interference Control
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Solution Overview
Problem
Conventional board connectors face issues with RF signal interference, inadequate RF signal shielding, and exposed mounting portions, which increase PCB mounting area and hinder miniaturization in electronic devices.
Innovation Solution
A board connector design featuring RF contacts spaced apart in axial directions, supported by an insulating part and shielded by ground contacts and a ground housing, which integrates electromagnetic interference (EMI) and electromagnetic compatibility (EMC) shielding, ensuring all RF contacts are enclosed within the ground housing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If RF contacts are positioned at close intervals to transmit RF signals, then signal transmission capability is improved, but RF signal interference between adjacent contacts increases
Solution Approach 1:
Ground contacts are introduced as intermediary elements positioned between adjacent RF contacts. These ground contacts act as shields that block electromagnetic field interference between RF contacts while maintaining close spacing for signal transmission efficiency.
Solution Approach 2:
The connector is segmented into distinct functional zones: RF contact regions for signal transmission, ground contact regions for shielding, and insulating parts for structural support. This segmentation allows RF contacts to be closely spaced while ground contacts provide localized interference protection between them.
2Ease of manufacture
If mounting portions of RF contacts are disposed to be exposed to the outside, then board mounting is facilitated, but the exposed portions are not shielded from interference
Solution Approach 1:
Ground contacts are positioned in advance to cover the mounting portions of RF contacts before final assembly. This preliminary shielding arrangement ensures that even exposed mounting areas are protected from electromagnetic interference while maintaining ease of board mounting.
3Adaptability or versatility
If multiple connectors and RF connectors are mounted in limited PCB space, then integration is achieved, but PCB mounting area is increased
Solution Approach 1:
The invention merges RF connector functionality and board connector functionality into a single integrated structure. RF contacts and transmission contacts are combined in one connector body, eliminating the need for separate RF connector and board connector assemblies, thereby reducing overall PCB mounting area.
Solution Approach 2:
The connector is designed with multi-functionality: it can simultaneously transmit RF signals through RF contacts and digital signals through transmission contacts, while also providing grounding and shielding functions. This universal design allows one connector to replace multiple specialized connectors.
Data Source
AI summary
The present disclosure relates to a board connector comprising a plurality of radio frequency (RF) contacts for transmitting RF signals; an insulation unit for supporting the RF contacts; a plurality of transmission contacts coupled to the insulation unit between a plurality of first RF contacts and a plurality of second RF contacts among the RF contacts so that the first RF contacts and the second RF contacts are spaced apart from each other along a first axial direction; a ground housing having the insulation unit coupled thereto; a first ground contact coupled to the insulation unit and shielding the first RF contacts from the transmission contacts, with reference to the first axial direction; and a second ground contact coupled to the insulation unit and shielding the second RF contacts from the transmission contacts, with reference to the first axial direction.