PCB Loop Connection Structure for Antenna Noise Suppression
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Solution Overview
Problem
The performance of antennas in electronic devices is deteriorated due to noise and parasite components generated by adjacent electronic components and flexible printed circuit boards, which limit their radiation efficiency and communication performance.
Innovation Solution
The implementation of a connection member with a loop structure that includes a first part connected to the printed circuit board and a second part electrically connected to the ground part, reducing noise and parasite components by forming a loop that alleviates the degradation of antenna performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a flexible printed circuit board is used to connect electronic components adjacent to the housing, then the electronic components can be operatively connected, but the antenna performance deteriorates due to noise and parasite components
Solution Approach 1:
The patent extracts the harmful parasite components effect from the connection member by configuring it as a loop structure with ground connection. The loop structure takes out the problematic open-ended configuration that acts as an antenna element, and replaces it with a closed loop that has suppressed radiation characteristics, thereby eliminating the harmful effect while maintaining the connection function.
Solution Approach 2:
The connection member serves as an intermediary element that mediates between the electronic components and the ground. By introducing this loop-shaped intermediary with proper ground connection, the patent creates a controlled path for electromagnetic currents that prevents them from radiating as parasite signals, thus protecting the antenna performance while enabling component interconnection.
2Adaptability or versatility
If electronic components are disposed adjacent to the housing, then various functions can be implemented, but noise generated by these components influences the radiation performance of the antenna
Solution Approach 1:
The patent converts the potentially harmful connection member into a beneficial element by configuring it as a loop structure with ground connection. What would normally be a source of parasite radiation is transformed into a noise-shielding structure. The loop configuration with ground reference creates a controlled electromagnetic environment that actually protects the antenna from noise generated by adjacent electronic components.
3Device complexity
If the connection member is configured as an open structure, then it can connect components flexibly, but it acts as a parasite component generating undesired radiation
Solution Approach 1:
The patent merges the connection function with the ground reference function into a single loop-shaped connection member. By combining these two functions - connecting electronic components and providing ground reference - the structure achieves both flexibility in component interconnection and suppression of parasite radiation through the closed loop configuration with ground connection.
Data Source
AI summary
Disclosed is an electronic device. The electronic device includes: a housing including a side wall at least partially configured as an antenna, a first printed circuit board disposed in the housing and including at least one ground part, a second printed circuit board, wherein the second printed circuit board includes an extension part extending along the side wall of the housing, a first part extending from one end of the extension part and connected to the first printed circuit board, and a second part extending from an opposite end of the extension part and electrically connected to the at least one ground part, at least one component disposed on the extension part, and a processor disposed on the first printed circuit board, and operatively connected to the at least one component through the first part of the second printed circuit board.