Conductive Bracket Opening Resonance Adjustment
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Electronic devices with conductive brackets experience parasitic resonance issues due to openings, which degrade radiation performance and shift operating frequency bands, compromising the functionality of antennas.
Innovation Solution
Incorporating a conductive member that electrically couples with the conductive bracket across the opening, dividing it into multiple sections to adjust resonance frequencies and prevent parasitic resonance interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a conductive bracket with an opening is used to reinforce rigidity and enable antenna functions, then structural strength and antenna radiation capability are improved, but parasitic resonance occurs that degrades radiation performance and shifts operating frequency bands
Solution Approach 1:
The conductive member divides the opening into multiple separate openings, segmenting the continuous conductive path. This segmentation prevents the formation of large-scale parasitic resonance loops while maintaining the structural integrity and antenna radiation function of the bracket.
2Volume of moving object
If the opening is left open to accommodate electronic parts, then mounting space is provided, but unintended parasitic resonance is generated that compromises antenna functionality
Solution Approach 1:
The conductive member is strategically positioned within the opening to create different electrical characteristics in different regions. The presence of the conductive member locally modifies the electromagnetic field distribution, preventing parasitic resonance in critical areas while maintaining mounting space availability.
3Reliability
If a conductive member is added to adjust resonance, then parasitic resonance frequency is shifted out of the operational band, but device complexity increases
Solution Approach 1:
The conductive member serves multiple functions simultaneously: it acts as a structural support element, an electromagnetic resonance control element, and a potential antenna element itself. This multi-functionality allows resonance adjustment without proportionally increasing device complexity.
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 effectively maintains optimal radiation performance by shifting parasitic resonance frequencies out of the antenna's operational band, enhancing the device's communication capabilities and reducing interference.
Implementation Method 1
The image current is induced to the opening through the conductor, to thus cause an unintended parasitic resonance
Data Source
Figure 1
Figure 2
Figure 3
AI summary
According to various embodiments, an electronic device may include a conductive bracket including an opening in at least part of the bracket, a display disposed on one surface of the bracket, a battery disposed on another surface of the bracket to face at least part of the opening, an antenna disposed within a specified range of the bracket and configure to output a signal of a first frequency band, and a conductive member comprising conductive material electrically coupled to the bracket by crossing at least part of the opening, wherein the opening is divided into a plurality of openings, to adjust resonance of a second frequency band of the opening generated by the signal output from the antenna.