Artificial Dielectric Lens Printing for Uniform Permittivity Control
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Solution Overview
Problem
Existing antennas face issues with poor parameter consistency, large scattering, and significant two-way communication interference, primarily due to the challenges in achieving uniform dielectric constant distribution and material complexity in traditional fabrication methods.
Innovation Solution
The method involves printing ceramic slurry on a base material to create a ceramic dry film, adjusting the ceramic powder material and concentration to achieve a specific dielectric constant distribution, and center-aligning composite plates to form an artificial dielectric lens with stable and accurate dielectric constant distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If traditional punching and foaming methods are used to manufacture dielectric lens, then the manufacturing process is simple, but the dielectric constant distribution is poor and scattering is large
Solution Approach 1:
The patent applies local quality by varying the ceramic powder concentration in different regions of the slurry to achieve the desired dielectric constant distribution. The slurry is formulated with different ceramic powder concentrations corresponding to different target dielectric constants at different lens positions, enabling precise local control of electromagnetic properties while maintaining a unified manufacturing process.
Solution Approach 2:
The patent changes the concentration parameter of ceramic powder in the slurry to control the dielectric constant of the composite material. By adjusting the ceramic powder concentration from 0% to 100% in different regions, the dielectric constant can be precisely controlled to match the required distribution pattern, resolving the contradiction between precision and complexity.
2Manufacturing precision
If additive materials are spread on the surface of substrate to achieve dielectric constant adjustment, then the dielectric constant can be modified, but the uniformity control is difficult and scattering increases
Solution Approach 1:
The patent applies preliminary action by pre-mixing the ceramic powder uniformly into the slurry before printing, rather than adding materials during or after the base material formation. This ensures homogeneous distribution of ceramic particles within the composite structure from the beginning, avoiding the uniformity problems and scattering issues that arise from surface spreading methods.
Solution Approach 2:
The patent creates a homogeneous composite material by mixing ceramic powder with the base slurry material before application. This composite slurry ensures uniform distribution of high-dielectric-constant ceramic particles within the low-dielectric-constant base material, achieving the desired dielectric constant while maintaining uniformity and minimizing scattering.
3Manufacturing precision
If ceramic powder concentration is increased to achieve higher dielectric constant, then the dielectric constant increases, but the material density increases
Solution Approach 1:
The patent applies local quality by selectively increasing ceramic powder concentration only in regions where higher dielectric constant is required for electromagnetic performance, rather than uniformly increasing density throughout the entire lens. This enables precise dielectric constant control at specific locations while maintaining lower overall material density.
Solution Approach 2:
The patent uses composite materials combining low-density base material with high-dielectric-constant ceramic powder. This composite approach achieves the desired dielectric constant through controlled ceramic powder concentration while maintaining relatively low overall density compared to solid ceramic materials, resolving the trade-off between dielectric constant and material density.
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 approach results in an artificial dielectric lens with stable and accurate dielectric constant distribution, improving antenna parameter consistency and reducing scattering and interference, thereby enhancing communication efficiency.
Implementation Method 1
heat it up to cure the printed pattern into a ceramic dry film
Implementation Method 2
heat it up to cure the printed pattern into a ceramic dry film
Data Source
Figure 1~2
Figure 3(a)~3(b)
Figure 4(a)~4(b)
AI summary
The invention discloses a fabrication method of the artificial dielectric lens, which comprises the following steps: Print ceramic slurry on a base material to generate a printed pattern, heat it up to cure the printed pattern into a ceramic dry film, and form a composite plate together with the base material. Adjust the material and/or concentration of ceramic powder in the used ceramic slurry at different positions of the printed pattern correspondingly, so that the dielectric constant of the composite plate after adjustment meets the plane distribution of the preset dielectric constant of the artificial dielectric lens. Center-align a number of composite plates made after adjustment to form a composite body, and the composite body comprises the artificial dielectric lens.