SFP Transceiver Flexible Assembly Impedance Control
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Solution Overview
Problem
Conventional SFP transceivers experience impedance mismatch issues with circuit boards, leading to assembly challenges and reduced reliability.
Innovation Solution
The SFP transceiver design includes flexible assemblies that connect electrical signal connectors to a circuit board, allowing independent impedance control and testing, thereby addressing impedance mismatch and enhancing assembly efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If two electrical signal connectors are directly fixed onto the circuit board in conventional SFP transceivers, then the structure is simple and easy to manufacture, but impedance mismatch occurs between the transceiver and the circuit board
Solution Approach 1:
The patent divides the electrical connection system into separate components: the circuit board, the flexible assembly, and the electrical signal connector. This segmentation allows each component to be optimized independently for impedance control, solving the impedance mismatch problem while maintaining manufacturing simplicity through modular assembly.
Solution Approach 2:
The flexible assembly serves as an intermediary component between the circuit board and the electrical signal connector. This intermediate element provides the necessary impedance transition and mechanical flexibility, enabling proper impedance matching without requiring direct fixation of the connector to the rigid circuit board.
2Productivity
If electrical signal connectors are directly fixed onto the circuit board, then the assembly process is simple, but the connectors are vulnerable to damage from insertion forces
Solution Approach 1:
The flexible assembly introduces dynamic flexibility to the connection system. It can deform elastically to absorb insertion forces and mechanical stress, protecting the electrical signal connector and circuit board from damage while maintaining reliable electrical connection. This dynamic capability enhances connector reliability without complicating the assembly process.
3Volume of moving object
If components are integrated into a fixed structure, then the device is compact, but individual components cannot be independently tested or replaced
Solution Approach 1:
The patent segments the transceiver into modular components (circuit board, flexible assembly, electrical signal connector) that maintain compact integration while allowing independent testing and replacement. Each component can be separately evaluated for impedance characteristics and replaced individually if needed, combining compactness with ease of repair.
Data Source
AI summary
A small form-factor pluggable (SFP) transceiver provided for being inserted into an electrical connection slot includes a housing, two electrical signal connectors, a circuit board, and two flexible assemblies. The housing defines an accommodating space. Each electrical signal connector has an inserting end arranged outside a front end of the housing and an opposite connecting end arranged in the accommodating space. The circuit board is fixed to the housing and is arranged in the accommodating space. Each flexible assembly has an end detachably connected to the circuit board and an opposite end detachably connected to the respective electrical signal connector. The SFP transceiver is configured to receive a signal, and the signal travels from the each electrical signal connector to the circuit board through the corresponding flexible assembly. Each flexible assembly, the corresponding electrical signal connector, and the circuit board are configured to be independently tested.