Reflective Panel Lamination for Accurate 5G/6G Wave Reflection
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Solution Overview
Problem
Existing reflective panels in 5G and 6G communication systems face issues with deviation in reflection direction and efficiency, leading to radio waves not reaching desired areas effectively.
Innovation Solution
A reflective panel design with a specific thickness ratio of 0.5<d1/d2<1.5 for the first and third interlayer films, along with a metal-containing second interlayer film, ensures stable reflection and direction accuracy by suppressing air bubbles and maintaining reflection efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional reflective panels are used in 5G/6G communication systems, then radio wave propagation can be improved, but reflection direction accuracy and reflection efficiency deviate from design specifications
Solution Approach 1:
The patent applies parameter changes by precisely controlling the thickness ratio of dielectric layers (d1/d2 between 0.5 and 1.5) and using specific permittivity values (2.0≤εr1≤3.0, 2.0≤εr2≤3.0) to optimize the reflective properties. This systematic parameter optimization ensures both accurate reflection direction and high reflection efficiency for 5G/6G frequency bands.
Solution Approach 2:
The patent uses composite materials by combining multiple dielectric layers with different permittivity values (εr1 and εr2) and a metal layer in a specific configuration. This multi-layer composite structure creates controlled impedance transitions that enhance reflection efficiency while maintaining directional accuracy.
2Loss of energy
If conventional reflective panels are used, then radio wave reflection can be achieved, but air bubbles form causing return loss and reducing reflection efficiency
Solution Approach 1:
The patent applies preliminary action by pre-heating the dielectric layers to 80-130°C before lamination and maintaining vacuum pressure during the bonding process. This preliminary thermal preparation prevents air bubble formation during assembly, eliminating return loss causes before they can occur.
Solution Approach 2:
The patent creates an inert environment by using vacuum pressing during the lamination process. The vacuum atmosphere removes air from between layers before bonding, preventing air bubble entrapment that would cause return loss and reduce reflection efficiency.
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
The design enhances reflection efficiency and accuracy, reducing return loss and air bubbles, making it suitable for environments with dead zones and transparent or soundproof applications.
Implementation Method 1
an interface between the first interlayer film and the second interlayer film, or an interface between the second interlayer film and the third interlayer film is a reflective surface configured to reflect an electromagnetic waves of 1 GHz or more and 300 GHz or less
Data Source
AI summary
A reflective panel includes a first substrate, a second substrate, and an interlayer in which, a first interlayer film, a second interlayer film, and a third interlayer film are stacked in this order, the interlayer being provided between the first substrate and the second substrate, wherein an interface between the first interlayer film and the second interlayer film, or an interface between the second interlayer film and the third interlayer film is a reflective surface configured to reflect an electromagnetic waves of 1 GHz or more and 300 GHz or less, and wherein d1 and d2 together satisfy 0.5<d1/d2<1.5, where d1 denotes an average thickness of the first interlayer film and d2 denotes an average thickness of the third interlayer film.