Electromagnetic Coupler Layout for Stable Wireless Communication
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Solution Overview
Problem
Existing wireless communication systems using electromagnetic field coupling face challenges in maintaining stable communication due to weakened electromagnetic coupling when couplers are laterally shifted, particularly when using compact couplers with reduced conductor areas.
Innovation Solution
The implementation of a wireless communication apparatus with a ground surface that lacks a conductor in specific regions overlapping with the signal line, allowing for larger signal line widths and enhanced electromagnetic coupling, even with lateral shifts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the coupler size is reduced to save space, then the coupler becomes more compact, but the electromagnetic coupling strength decreases and communication stability deteriorates
Solution Approach 1:
The ground surface is designed with spatially varying conductor distribution: the conductor is removed only in the region overlapping with the signal line in plan view, while other regions maintain normal conductor coverage. This local modification optimizes electromagnetic coupling in the critical signal region without compromising overall structural integrity or excessive size reduction
Solution Approach 2:
The invention addresses the two-dimensional coupling problem by modifying the third dimension (vertical conductor layers). By removing conductor from the ground surface in the overlapping region, the patent creates vertical space for enhanced signal line width and improved electromagnetic coupling in the critical interaction zone
2Volume of moving object
If the conductor area on the ground surface is reduced to make the coupler compact, then the coupler size decreases, but the electromagnetic coupling is weakened and gain is reduced
Solution Approach 1:
The conductor on the ground surface is selectively removed only in the region overlapping with the signal line in plan view, while other regions maintain normal conductor coverage. This local quality change allows the signal line to have larger width in the overlapping region for enhanced coupling, without requiring complete reduction of ground surface conductor area
Solution Approach 2:
The ground surface conductor is segmented into two functional regions: the overlapping region with signal line where conductor is removed to allow larger signal line width and enhanced coupling, and non-overlapping regions where conductor remains for maintaining overall structural integrity and reference potential
3Power
If the signal line width is increased to enhance electromagnetic coupling, then the coupling strength improves, but the coupler occupies more space
Solution Approach 1:
The signal line width is increased locally only in the region overlapping with the ground surface conductor, rather than uniformly across the entire signal line. This allows enhanced electromagnetic coupling in the critical interaction region while maintaining compact overall coupler dimensions in non-critical regions
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 configuration ensures stable communication performance by increasing gain and resistance to lateral shifts, while reducing coupler size and maintaining strong electromagnetic coupling.
Implementation Method 1
a coupler configured to be electromagnetically coupled to the another wireless communication apparatus
Data Source
AI summary
A wireless communication apparatus configured to perform wireless communication with another wireless communication apparatus includes a coupler configured to be electromagnetically coupled to the another wireless communication apparatus, wherein the coupler includes a signal line and a ground surface including a conductor, and wherein the ground surface does not include the conductor in a part of a region overlapping with the signal line in a plan view.