Antenna Structure With Dielectric Isolation Layer
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Solution Overview
Problem
Existing antenna structures face challenges in miniaturization, multi-band capability, and high gain while maintaining low power consumption and cost, especially in satellite communication and radio frequency identification systems, where they struggle to efficiently transmit and receive double-sided electromagnetic waves without increasing thickness and avoiding electromagnetic wave interference.
Innovation Solution
The antenna structure incorporates a dielectric layer divided by an isolation layer into two microcavities with alternately arranged coplanar electrodes, allowing for double-sided electromagnetic wave transmission and reception without thickness increase, using flexible substrates and conductive polymer composite materials to minimize interference and maintain flexibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If traditional horn, spiral, or doublet antenna structures are used, then electromagnetic wave transmission capability is maintained, but the antenna size becomes large and cannot achieve miniaturization
Solution Approach 1:
The antenna structure is segmented into multiple functional layers including substrate, dielectric layer, conductor layer, and liquid crystal layer, each performing specific functions. This segmentation allows miniaturization while maintaining transmission capability through optimized layer interactions.
Solution Approach 2:
The patent employs composite material structure combining dielectric materials, conductive materials, and liquid crystal materials with anisotropic properties. This composite approach enables compact design with high gain and multi-band capability while maintaining electromagnetic wave transmission efficiency.
2Volume of moving object
If antenna thickness is increased to improve electromagnetic wave transmission, then transmission capability is enhanced, but the antenna cannot be miniaturized and becomes bulky
Solution Approach 1:
The patent transitions from traditional three-dimensional antenna structures to a planar two-dimensional configuration with multiple functional layers. This dimensional change enables miniaturization in the thickness direction while maintaining transmission capability through in-plane electrode arrangements and liquid crystal layer optimization.
Solution Approach 2:
The antenna uses flexible substrate and thin film structures for the dielectric and liquid crystal layers, enabling miniaturization and flexibility. The thin film configuration allows the antenna to maintain transmission capability while reducing overall thickness for compact applications.
3Adaptability or versatility
If single-sided electromagnetic wave transmission is used, then structure is simple, but multi-band capability and gain are limited
Solution Approach 1:
The antenna structure is designed with multi-functionality to achieve double-sided transmission, multi-band operation, and high gain simultaneously. The liquid crystal layer with anisotropic dielectric constant enables the same structure to support multiple frequency bands and transmission directions without requiring separate antenna elements.
Solution Approach 2:
The patent incorporates a liquid crystal layer with switchable dielectric properties that can dynamically adjust electromagnetic wave transmission characteristics. This dynamic property enables the antenna to adapt to different frequency bands and transmission requirements while maintaining a compact single structure.
4Use of energy by moving object
If liquid crystal dielectric tunable materials are used, then low power consumption and cost are achieved, but electromagnetic wave interference between different sides may occur
Solution Approach 1:
The conductor layer acts as an intermediary between the dielectric layer and liquid crystal layer, controlling electromagnetic field distribution to prevent interference between opposite sides. This intermediary structure allows the liquid crystal material to function at low power while maintaining isolation between transmission sides.
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 efficient transmission and reception of electromagnetic waves with reduced thickness, minimizing interference and maintaining flexibility, suitable for flexible electronic devices like e-tickets and identification cards, while maintaining low power consumption and cost.
Implementation Method 1
The dielectric constant of liquid crystal molecules has anisotropy, and liquid crystals have advantages of low working voltage, low power consumption
Implementation Method 2
a plurality of first coplanar electrodes provided on one side of the isolation layer facing the first dielectric layer and including a plurality of first electrodes and a plurality of second electrodes alternately arranged
Data Source
AI summary
An antenna structure, a manufacturing method thereof and a communication device are provided. The antenna structure includes a first base substrate, a second base substrate, a dielectric layer provided between the first base substrate and the second base substrate, an isolation layer, first coplanar electrodes provided on one side of the isolation layer facing the first base substrate, and second coplanar electrodes provided on another side of the isolation layer facing the second base substrate. In the direction perpendicular to the first base substrate, the dielectric layer includes a first dielectric layer and a second dielectric layer, and the isolation layer is provided between the first dielectric layer and the second dielectric layer. The first coplanar electrodes include first electrodes and second electrodes alternately arranged. The second coplanar electrodes include third electrodes and fourth electrodes alternately arranged.