Shielded Wire-to-Board Connector Layout for RF Crosstalk Control
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Solution Overview
Problem
Current connectors for in-equipment wiring of communication devices, particularly in next-generation mobile communication devices like 5G-compatible smartphones, require improvement in size reduction and transmission characteristics to effectively manage radio frequency signals and shielded cables.
Innovation Solution
A connector design that includes a plurality of contacts for radio frequency signal transmission, shielding, and power lines, with a specific arrangement of contact points and shielding elements to minimize size and enhance transmission quality, comprising an electric wire-to-board connector with a unique configuration of first, second, and third contacts, and an insulator, along with a cable holding mechanism to manage cable orientation and reduce cross-talk.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a connector is designed to collectively connect RF coaxial cables and discrete cables to the antenna module board, then the connectivity and versatility are improved, but the device size and complexity increase
Solution Approach 1:
The patent combines multiple contact types (first contacts for RF signals, second contacts for shields, third contacts for discrete cables) into a single integrated connector body. This merging of previously separate connector functions into one unified structure achieves versatile connectivity while controlling the overall device size, directly resolving the technical contradiction between adaptability and volume.
Solution Approach 2:
The connector is designed as a universal interface that can simultaneously accommodate different cable types (coaxial and discrete cables) and provide multiple functions (signal transmission, shielding, power supply) through its multi-contact structure. This multi-functionality approach enables a single connector to replace multiple separate connectors, improving versatility without proportionally increasing device size.
2Volume of moving object
If the distance between antenna module board and main board is reduced, then the device size is minimized, but transmission characteristics and signal quality deteriorate
Solution Approach 1:
The connector acts as an intermediary component between the antenna module board and external cables, providing a controlled interface that maintains signal integrity even when the distance to the main board is reduced. The structured contact arrangement and shielding mechanisms in the connector compensate for the reduced spacing, preserving transmission characteristics while enabling compact device design.
Solution Approach 2:
The patent implements differentiated contact structures with specific local qualities optimized for their functions: first contacts with RF-optimized geometry for signal transmission, second contacts providing localized shielding, and third contacts for discrete cable connections. This local optimization of contact properties maintains high transmission quality in the compact connector structure, resolving the contradiction between miniaturization and signal integrity.
3Device complexity
If multiple cables are collectively connected through a single connector, then the wiring complexity is reduced, but cross-talk between signal lines increases
Solution Approach 1:
The connector internally segments different cable types and signal paths into separate contact groups (first contacts for RF, second contacts for shields, third contacts for discrete cables). This segmentation isolates different signal types within the unified connector structure, reducing cross-talk while maintaining the wiring simplicity benefit of a single connector interface.
Solution Approach 2:
The connector serves as an intermediary that mediates between multiple external cables and the internal circuit board connections. Through its structured contact arrangement and shielding mechanisms, it manages the electromagnetic interactions between adjacent cables, suppressing cross-talk while preserving the simplified external wiring architecture.
Data Source
AI summary
The connector is a wire-to-board connector for connecting, through mating with a partner connector mounted on a circuit board, the circuit board to one or more connection target cables that have a first electroconduction path used for transmitting high-frequency signals, a second electroconduction path used for shielding, and a plurality of third electroconduction paths. The connector is provided with a first contact connected to the first electroconduction path, a second contact connected to the second electroconduction path, third contacts connected to the third electroconduction paths, and an insulator. The second contact has an inter-contact shielding section arranged between a first contact section and third contact sections. The first contact section and the inter-contact shielding section are arranged on both sides, in the pitch direction, of a plurality of third contact sections. The inter-contact shielding section is arranged between the first contact section and the third contact sections.