Transparent Antenna Array Layout for High Gain in Thin Displays
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The challenge is to design an antenna capable of achieving high antenna gain in a limited space without being visible, particularly for high-frequency or ultra-high frequency communication in thin, high-transparency, and flexible display devices, where space for the antenna is constrained by the decreasing bezel area.
Innovation Solution
The antenna array is configured with multiple antenna elements arranged in a specific pattern, sharing radiation bodies and transmission lines, and utilizing a ground line to reduce unwanted coupling, allowing for improved antenna gain and flexibility while maintaining transparency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the antenna is designed to achieve high antenna gain, then the communication performance is improved, but the space required for the antenna increases
Solution Approach 1:
The antenna is divided into multiple radiation bodies (first radiation body, second radiation body, third radiation body) that are spatially separated and connected through transmission lines. This segmentation allows each radiation body to contribute to the overall antenna gain while maintaining a compact total area, resolving the contradiction between high gain and limited space.
Solution Approach 2:
The antenna structure extends in multiple directions (first direction, second direction) from the first radiation body, utilizing two-dimensional spatial arrangement. This dimensional approach enables the antenna to achieve higher gain through multi-directional radiation patterns without requiring excessive linear space, effectively resolving the space-gain tradeoff.
2Ease of manufacture
If the antenna is made transparent and flexible, then the display device aesthetics and flexibility are improved, but the antenna performance may deteriorate
Solution Approach 1:
The antenna structure is designed as a thin, flexible pattern that can be integrated into the display device without compromising its transparency or flexibility. The radiation bodies and transmission lines are configured to maintain mechanical compliance with the flexible display substrate while preserving electromagnetic radiation functionality.
Solution Approach 2:
The antenna is segmented into multiple discrete radiation bodies connected by transmission lines, allowing each segment to be optimized for both transparency (through material selection and geometric design) and performance (through proper spacing and connection). This segmentation enables independent optimization of aesthetic and performance characteristics.
3Area of stationary object
If multiple antenna elements are arranged closely to improve space utilization, then the area is reduced, but unwanted coupling between elements increases
Solution Approach 1:
Transmission lines serve as intermediaries between the radiation bodies, providing controlled impedance paths that manage electromagnetic coupling. The transmission lines are designed to guide signals between radiation bodies while minimizing unwanted coupling effects, enabling close spacing without performance degradation.
Solution Approach 2:
The antenna array is segmented into multiple independently connected radiation bodies, with each body connected through dedicated transmission lines. This segmentation allows precise control over inter-element coupling by designing the transmission line characteristics, enabling compact arrangement while maintaining signal integrity and minimizing harmful interactions.
Data Source
AI summary
An antenna array according to an embodiment includes antenna elements arranged in a predetermined direction. Each antenna element includes a first radiation body, a second radiation body to be spaced apart from the first radiation body in a first direction, a third radiation body to be spaced apart from the first radiation body in a second direction, a first signal pad and a second signal pad to supply signals to the first radiation body, a first transmission line extending in the first direction to connect the first signal pad and the first radiation body, a second transmission line extending in the second direction to connect the second signal pad and the first radiation body, a third transmission line configured to connect the first radiation body and the second radiation body, and a fourth transmission line configured to connect the first radiation body and the third radiation body.