PCB Cable Bracket Discontinuity for Parasitic Resonance Shifting
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Solution Overview
Problem
Parasitic resonance in cables connecting printed circuit boards (PCBs) within electronic devices can adversely affect communication performance by occurring within the in-band frequency range.
Innovation Solution
Incorporating a discontinuous part in the bracket structure of the electronic device, which alters the path of current flow between a protrusion and a cable, effectively shifting the frequency of parasitic resonance outside the in-band range.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If cables are used to connect PCBs within the electronic device, then electrical connection between PCBs is achieved, but parasitic resonance occurs within the in-band frequency range causing communication performance degradation
Solution Approach 1:
The patent extracts the harmful resonant loop by introducing a discontinuous part that breaks the continuous current path between the cable and bracket. This separation removes the parasitic resonance source from the in-band frequency range, preventing communication performance degradation while maintaining electrical connectivity functionality.
Solution Approach 2:
The discontinuous part acts as an intermediary element between the cable and bracket. It provides mechanical support and electrical connection functionality while simultaneously disrupting the resonant current path. The intermediary structure shifts the parasitic resonance frequency outside the in-band range, resolving the contradiction between connection reliability and resonance interference.
2Stability of the object's composition
If a continuous bracket structure is used to support cables and PCBs, then structural stability is achieved, but parasitic resonance frequency falls within the in-band range causing interference
Solution Approach 1:
The bracket structure is segmented by introducing a discontinuous part that divides the continuous conductive path. This segmentation maintains the mechanical support function and structural stability while breaking the electrical continuity that causes parasitic resonance in the in-band frequency range. The segmented design allows the bracket to remain structurally sound while eliminating harmful resonance.
Solution Approach 2:
The discontinuous part is strategically positioned at specific locations where it locally disrupts the current path without compromising overall structural stability. This local modification changes the electrical properties in a targeted area, shifting parasitic resonance frequency outside the in-band range while preserving the global structural integrity of the bracket.
Data Source
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AI summary
According to one embodiment, an electronic device may comprise: a bracket including a base and a pair of walls formed to protrude from the base; a first printed circuit board disposed on the base; a second printed circuit board, which is disposed on the base and is provided at a position spaced apart from the first printed circuit board; a battery, which is disposed on the base and is disposed between the first printed circuit board and the second printed circuit board; a cable, which is disposed on the base and connects the first printed circuit board and the second printed circuit board; a protrusion, which protrudes from either one wall of the pair of walls to the other wall and contacts the cable; and a discontinuous part formed on the bracket.