Radio-Transparent Window Glass Composition for 100 GHz Signals
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Solution Overview
Problem
Existing glass materials for windows impair radio transmitting/receiving by radio-utilizing apparatuses, particularly in high frequency bands.
Innovation Solution
A glass plate with a radio transmittance of at least 20% at 100 GHz, designed to minimize interference with radio-utilizing apparatuses such as radar and mobile phones, by optimizing the composition and thickness for improved radio wave transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional glass materials are used for windows, then the glass provides adequate visible light transmittance and structural properties, but the glass impairs radio transmitting/receiving by radio-utilizing apparatuses in high frequency bands
Solution Approach 1:
The patent changes the chemical composition parameters of the glass by controlling the content of specific oxides (Fe2O3: 0.003-0.03 mass%, TiO2: 0.01-0.5 mass%, Nb2O5: 0.01-0.1 mass%, Ta2O5: 0.01-0.1 mass%) to achieve high radio transmittance in the 24 GHz and 100 GHz bands while maintaining visible light transmittance and structural integrity
Solution Approach 2:
The patent creates a composite glass material combining multiple oxide components in specific proportions to achieve simultaneous optimization of visible light transmittance, structural strength, and radio wave transmission properties that cannot be achieved with single-component glass
2Reliability
If the glass composition is optimized for high radio transmittance, then radio-utilizing apparatuses can function properly, but the production and physical properties of large glass plates may be compromised
Solution Approach 1:
The patent carefully selects and balances the concentration ranges of rare earth oxide additives (Nb2O5: 0.01-0.1 mass%, Ta2O5: 0.01-0.1 mass%) to achieve high radio transmittance while maintaining glass melt fluidity and crystallization behavior suitable for large-scale production processes
Solution Approach 2:
The patent introduces specific oxide components (TiO2: 0.01-0.5 mass%, Nb2O5: 0.01-0.1 mass%, Ta2O5: 0.01-0.1 mass%) that locally enhance radio wave transmission properties without compromising the overall structural integrity and manufacturability of large glass plates
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
Enables the use of radio-utilizing apparatuses in vehicles and buildings without interference, while maintaining suitable production and physical properties for large glass plates.
Implementation Method 1
a glass plate having a radio transmittance of at least 20% at a frequency of 100 GHz as calculated as 18 mm thickness
Data Source
AI summary
To provide a glass plate for a window material and a window comprising the glass plate, which are less likely to be a barrier to radio transmitting/receiving in use of a radio-utilizing apparatus, and a radio communication apparatus comprising the glass plate.A glass plate having a radio transmittance of at least 20% at a frequency of 100 GHz as calculated as 18 mm thickness, a window comprising the glass plate, and a radio communication apparatus comprising the glass plate.