Meta-surface With Filling Structure For Antenna Gain
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Solution Overview
Problem
Traditional crossbar meta-surface structures suffer from high insertion loss, which limits their ability to meet the requirements of high-gain antennas in advanced communication systems, particularly in millimeter wave transmission and reflection operations.
Innovation Solution
A meta-surface design is introduced, featuring a tunable dielectric layer between two substrates with electrode layers and a filling structure that reduces the gap between electrode strips, increasing capacitance and radiation area, thereby improving transmission and reflection efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If traditional crossbar meta-surface structures are used, then the structure is simple and easy to manufacture, but the insertion loss is high which limits radiation gain
Solution Approach 1:
The patent introduces a filling structure with specific dielectric properties placed in the gap between electrode strips. This local modification changes the electromagnetic characteristics only in the gap region, reducing insertion loss without requiring complete structural redesign. The filling structure has different dielectric constant from the substrate, creating local quality enhancement that improves radiation efficiency while maintaining overall structural simplicity.
Solution Approach 2:
The patent combines multiple materials with different electromagnetic properties: the base dielectric substrate, the electrode layer material, and the filling structure material with specific dielectric constants. This composite material approach allows optimization of each component's properties to reduce insertion loss while maintaining manufacturing feasibility. The composite structure achieves better electromagnetic performance than single-material designs.
2Productivity
If the gap between electrode strips is reduced to increase capacitance, then transmission efficiency improves, but manufacturing precision requirements increase
Solution Approach 1:
The filling structure acts as an intermediary element placed in the gap between electrode strips. Instead of directly reducing the gap size (which would require high manufacturing precision), the filling structure mediates the electromagnetic interaction, effectively increasing capacitance and improving transmission efficiency while maintaining larger, more manufacturable gap dimensions. The intermediary filling material compensates for the larger gap size.
Solution Approach 2:
The patent changes the dielectric parameter (dielectric constant) of the filling structure to achieve the desired capacitance increase. By selecting filling material with appropriate dielectric constant, the system achieves improved transmission efficiency without requiring precise gap control. The parameter change in material property substitutes for the need for precise dimensional control.
3Loss of energy
If filling structure is added to reduce insertion loss, then radiation gain improves, but device complexity increases
Solution Approach 1:
The patent segments the gap region into discrete filling structures positioned between specific electrode strips. This segmentation approach allows the filling structure to be added only where needed to reduce insertion loss, rather than filling the entire meta-surface. The segmented approach minimizes the increase in device complexity by localizing the additional components to critical regions only.
Solution Approach 2:
The patent extracts and addresses only the critical loss regions by adding filling structures selectively between electrode strips where insertion loss is most significant. Rather than uniformly complicating the entire structure, the design takes out the problematic gap regions and applies targeted modifications. This extraction approach improves radiation gain while minimizing the overall increase in device complexity.
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 meta-surface design enhances radiation gain by reducing insertion loss and improving transmission and reflection performance, enabling the creation of high-gain antennas with flexible reconfigurable resonant units and reduced control line requirements.
Implementation Method 1
a tunable dielectric layer between the first substrate and the second substrate; wherein the meta-surface includes a tunable dielectric layer between the first substrate and the second substrate
Implementation Method 2
the plurality of first electrode strips and the plurality of second electrode strips are crossed to define a plurality of resonant units
Data Source
AI summary
Provided is a meta-surface. The meta-surface includes: a first substrate and a second substrate, and a tunable dielectric layer; wherein the first substrate includes a first dielectric substrate and a first electrode layer on a side, close to the tunable dielectric layer, of the first dielectric substrate, and the second substrate includes a second dielectric substrate and a second electrode layer on a side, close to the tunable dielectric layer, of the second dielectric substrate; wherein the first electrode layer includes a plurality of first electrode strips juxtaposed in a first direction, and the second electrode layer includes a plurality of second electrode strips juxtaposed in a second direction, wherein the plurality of first electrode strips and the plurality of second electrode strips are crossed to define a plurality of resonant units; and the meta-surface further includes a filling structure.