Laminated Antenna Element Layout for Thin High-Efficiency Radiation
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Solution Overview
Problem
Existing antenna elements with insulating members covering the entire surface of radiation conductors face challenges in achieving a thin design due to increased thickness and protrusions formed by interlayer connection conductors, which affect radiation efficiency and mechanical stability.
Innovation Solution
The antenna element design features a base with laminated insulating layers and a radiation conductor, where an insulator is placed on the surface of the conductor but does not overlap the interlayer connection region, allowing the connection region to protrude and be sandwiched by the insulator, reducing overall thickness and enhancing radiation efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an insulating member is formed to cover the entire surface of the radiation conductor, then the radiation efficiency is improved and mechanical stability is enhanced, but the thickness of the antenna element is uniformly increased making it difficult to achieve a thin design
Solution Approach 1:
The insulating member is divided into a first insulating member and a second insulating member that are positioned at different locations. The first insulating member is located at a first position on the radiation conductor, while the second insulating member is located at a second position, creating a segmented insulation structure that reduces overall thickness while maintaining mechanical stability at critical points.
Solution Approach 2:
Instead of providing uniform insulation across the entire radiation conductor surface, insulating members are strategically positioned only at specific locations where electrical isolation is most needed. This localized insulation approach maintains mechanical stability at critical interfaces while minimizing the overall thickness of the antenna element.
2Reliability
If an insulating member covers the entire surface of the radiation conductor, then electrical isolation is improved, but protrusions are formed in regions where interlayer connection conductors are present, affecting radiation efficiency
Solution Approach 1:
The insulating member is segmented into multiple parts positioned at different locations on the radiation conductor. This segmentation allows electrical isolation to be maintained at critical points while avoiding the formation of protrusions in regions where interlayer connection conductors are present, thereby preserving radiation efficiency.
Solution Approach 2:
The insulating member is extracted from covering the entire surface and is instead positioned only at specific locations where electrical isolation is needed. This selective placement removes the harmful protrusions in interlayer connection regions while maintaining the necessary electrical isolation function.
3Length of stationary object
If the antenna element is made thinner by reducing insulating material, then the overall thickness is reduced, but the mechanical stability and peeling resistance at outer edges deteriorate
Solution Approach 1:
The insulating structure is segmented into multiple insulating members positioned at strategic locations, particularly at outer edges and interfaces where peeling resistance is critical. This segmented approach maintains mechanical strength at vulnerable points while allowing the overall antenna element thickness to be reduced.
Solution Approach 2:
Insulating material is concentrated at specific locations where mechanical strength and peeling resistance are most needed, such as outer edges and connection interfaces. This localized reinforcement maintains peeling resistance while minimizing the overall amount of insulating material and reducing the antenna element thickness.
Data Source
AI summary
An antenna element includes a base including laminated insulating layers, a radiation conductor on a principal surface of the base, an insulator at least a portion of which is on a surface of the radiation conductor, and an interlayer connection conductor in at least one of the insulating layers and connected to the radiation conductor, wherein a connection region of the surface of the radiation conductor overlapping the interlayer connection conductor protrudes relative to an outer edge of the radiation conductor in a lamination direction in which the insulating layers are laminated, and the insulator does not overlap the connection region and at least sandwiches the connection region when viewed in the lamination direction of the insulating layers.