Pins-and-Holes PCB Coupling for High-Frequency Signal Integrity
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Solution Overview
Problem
Existing connectors for flexible printed circuit boards and printed circuit boards suffer from signal degradation when transmitting high-frequency signals, leading to inefficient use of the transmission band and poor broadband signal quality.
Innovation Solution
A communication device configuration featuring a first circuit board with protruding ground and signal pins, and a second circuit board with signal and ground lines, where the second circuit board is inserted between the pins to establish direct electrical coupling, bypassing the need for traditional connectors and minimizing signal degradation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional connectors are used to connect flexible printed circuit board and printed circuit board, then the connection is established, but signal degradation occurs at high frequencies leading to poor broadband signal quality
Solution Approach 1:
The patent extracts and eliminates the traditional connector component from the connection system. By directly coupling the flexible printed circuit board to the printed circuit board through precisely positioned pins and holes, the connector is removed entirely, thereby eliminating the signal degradation that connectors introduce at high frequencies while maintaining reliable electrical connection.
Solution Approach 2:
The patent merges the connection function directly into the circuit board structure itself. The ground pin and signal pin are integrated into the printed circuit board substrate, and the flexible printed circuit board is directly coupled to these pins without intermediate components. This merging eliminates the interface between separate components that causes signal degradation.
2Speed
If transmission speed is increased to 40 Gbps or 100 Gbps, then higher data rates are achieved, but signal degradation becomes more severe
Solution Approach 1:
The patent replaces the mechanical connector interface with a direct structural coupling mechanism. By using precisely positioned pins and holes that create direct electrical contact between the flexible printed circuit board and the printed circuit board, the system eliminates the mechanical interface that causes signal degradation, enabling high-speed transmission without quality loss.
3Adaptability or versatility
If flexible printed circuit board is used for signal transmission, then mounting flexibility is improved, but connection reliability deteriorates due to traditional connector limitations
Solution Approach 1:
The patent segments the connection interface into distinct functional elements: ground pins for reference potential, signal pins for data transmission, and precisely positioned holes for mechanical alignment. This segmentation allows the flexible printed circuit board to maintain its mounting flexibility while each segment performs its specific function reliably, with ground pins providing stable reference and signal pins ensuring clean signal transmission.
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 prevents signal band degradation, enabling broadband transmission up to 70 GHz by directly coupling signal and ground lines, thus maintaining high-frequency signal quality.
Implementation Method 1
the first signal line and the second signal line are electrically coupled with each other via the signal pin and the first ground pattern and the second ground pattern are electrically coupled with each other via the ground pin
Data Source
AI summary
There is provided a communication device that includes a first circuit board which includes a first ground pattern (GND) and a first signal line formed on a substrate, a ground pin electrically coupled with the first GND, where the ground pin protrudes from an end of the substrate, and a signal pin formed in the substrate and electrically coupled with the first signal line, where the signal pin protrudes from the end. The communication device further includes a send circuit board which includes a second GND and a second signal line, wherein when an end of the circuit board is inserted into a space between the ground pin and the signal pin, the first signal line and the second signal line are electrically coupled with each other via the signal pin and the first GND and the second GND are electrically coupled with each other via the ground pin.