PCB Antenna Shielding Layout for Moving Connector Interference
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Solution Overview
Problem
The movement of connectors in electronic devices can cause deviations in the resonant frequency band of antennas, leading to deteriorated radiation performance and reduced usable antenna area, which affects wireless communication capabilities.
Innovation Solution
Incorporating a conductive member between the connectors and the antenna pattern, which covers the movement path of the connectors while leaving non-moving portions uncovered, to minimize parasitic resonance and maintain antenna performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If no antenna pattern is disposed in regions overlapping with connectors to prevent resonant frequency deviation, then antenna performance is maintained, but usable antenna area is reduced
Solution Approach 1:
A conductive member is introduced as an intermediary element disposed between the connector and the antenna pattern. This conductive member acts as a mediator that prevents direct interaction between the moving connector and the antenna pattern, thereby eliminating parasitic resonance while allowing the antenna pattern to maintain its full area without exclusion zones around connectors.
2Area of stationary object
If antenna pattern is disposed to overlap with connectors to expand usable area, then antenna area is increased, but resonant frequency deviation occurs due to connector movement
Solution Approach 1:
The conductive member serves as a protective intermediary that enables the antenna pattern to overlap with the connector region without suffering from parasitic resonance. The conductive member absorbs or shields the electromagnetic interference from the moving connector, allowing the antenna pattern to utilize the previously unusable area while maintaining frequency stability.
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 solution reduces deviations in the resonant frequency band and enhances antenna radiation performance, ensuring stable wireless communication even with connector movement, without compromising the antenna's usable area.
Implementation Method 1
it is possible to block parasitic resonance, which is changed as the first connector moves, from being transmitted to the antenna pattern
Data Source
AI summary
An electronic device may include a printed circuit board including a connector configured to move between a first position and a second position on the printed circuit board; an antenna; a support member that is disposed between the printed circuit board and the antenna in a direction in which the printed circuit board, the support member, and the antenna are stacked; a signal connection member that is electrically connected to the connector of the printed circuit board; and a conductive member disposed between the printed circuit board and the support member, and aligned to cover the first position and the second position of the printed circuit board.