Electromagnetic Wave Transmission Sheet Resonance and Reflection Control
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Solution Overview
Problem
Existing electromagnetic wave transmission sheets suffer from inefficiencies due to reflection and standing wave issues, leading to reduced signal intensity and stability, particularly at distances from the sheet.
Innovation Solution
The electromagnetic wave transmission sheet features a mesh-like electrode with a width perpendicular to the wave's travel direction set to half the wavelength, incorporating an electromagnetic wave absorbing medium only on short sides to minimize reflection and maximize resonance, allowing efficient transmission without unnecessary absorption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If electromagnetic wave absorbing members are provided at each end of the electromagnetic wave transmission sheet, then reflection of electromagnetic wave is suppressed and standing wave is reduced, but electromagnetic wave energy is absorbed and disposed leading to reduced transmission efficiency
Solution Approach 1:
The patent extracts the electromagnetic wave absorbing member only from the necessary position (one end) rather than both ends. By removing the redundant absorbing member, the system maintains the essential function of suppressing reflection and standing waves while reducing unnecessary energy absorption, thus improving transmission efficiency.
Solution Approach 2:
The patent applies partial action by providing the electromagnetic wave absorbing member at only one end of the transmission sheet rather than both ends. This partial application is sufficient to achieve the desired effect of suppressing standing waves and reflection, while avoiding the excessive energy absorption that would occur with full application at both ends.
2Reliability
If electromagnetic wave absorbing members are provided to suppress reflection, then standing wave is reduced, but device complexity and cost increase
Solution Approach 1:
The patent extracts and removes the unnecessary electromagnetic wave absorbing member from one end of the transmission sheet. This simplification maintains the essential functionality of suppressing standing waves and reflection while reducing device complexity and associated costs.
Solution Approach 2:
The patent applies the absorbing member partially at only one end rather than both ends. This partial application achieves sufficient suppression of standing waves and reflection while minimizing device complexity and cost.
3Reliability
If electromagnetic wave absorbing members are provided to reduce reflection, then standing wave is suppressed, but the sheet becomes heavier and larger
Solution Approach 1:
The patent extracts and removes the redundant electromagnetic wave absorbing member from one end of the transmission sheet. This reduction in components directly decreases the weight and size of the overall system while maintaining sufficient suppression of standing waves and reflection.
Solution Approach 2:
The patent applies the absorbing member partially at only one end rather than both ends. This partial application achieves the necessary suppression of standing waves and reflection while minimizing the added weight and size of the system.
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 enables highly-efficient electromagnetic wave transmission with reduced loss and stable intensity, eliminating standing waves and allowing for compact, lightweight, and cost-effective solutions for wireless LAN and RFID systems.
Implementation Method 1
the length of the width thereof in a vertical direction that is perpendicular to the traveling direction of a transmitted electromagnetic wave is substantially equal to a length obtained by multiplying a half of the wavelength of the transmitted electromagnetic wave by a natural number so that a resonance state is obtained in the vertical direction
Implementation Method 2
an electromagnetic wave absorbing medium for reducing reflection of the transmitted electromagnetic wave in the traveling direction
Data Source
AI summary
Provided is an electromagnetic wave transmission sheet having a mesh-shaped electrode. The sheet has a length of width in a direction vertical to the propagation direction of the transmitted electromagnetic wave which length is substantially identical to half of the wavelength of the transmitted electromagnetic wave multiplied by a natural number so that a resonance state is obtained in the vertical direction. It is preferable that the sheet have an electromagnetic wave absorbing medium for reducing reflection of the transmitted electromagnetic wave in the propagation direction, so as to eliminate the need of an electromagnetic wave absorbing medium for reducing reflection in the direction vertical to the propagation direction of the transmitted electromagnetic wave.