Split-Ring Antenna Layout for Miniaturization and Return Loss
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing antenna members are not sufficiently miniaturized and require improvements in impedance matching to enhance performance.
Innovation Solution
The antenna member is configured with an impedance matching portion positioned above the feed portion in the up-down direction, coupling the first and second side portions, and is formed from a single sheet metal plate without waste, allowing for a compact design and improved return loss characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the antenna member uses a conventional layout with impedance matching portion and feed portion at the same level, then the impedance matching can be achieved, but the antenna size cannot be sufficiently miniaturized
Solution Approach 1:
The patent positions the impedance matching portion above the feed portion in the up-down direction, transitioning from a planar two-dimensional layout to a three-dimensional spatial arrangement. This vertical stacking enables impedance matching while reducing the horizontal footprint and overall antenna size.
Solution Approach 2:
The impedance matching portion is positioned above and couples the first and second side portions, creating a nested vertical structure where the impedance matching portion is effectively 'nested' within the vertical space of the antenna assembly, maximizing space utilization.
2Volume of moving object
If the antenna member is miniaturized by reducing the size of individual components, then the overall size decreases, but the return loss characteristics deteriorate
Solution Approach 1:
By moving the impedance matching portion to a vertical position above the feed portion, the patent maintains effective impedance matching in a compact horizontal footprint. The vertical separation preserves the electrical coupling necessary for good return loss characteristics while minimizing the overall antenna volume.
Solution Approach 2:
The patent adjusts the positional parameter of the impedance matching portion (moving it from horizontal to vertical arrangement) to optimize both the size and return loss characteristics simultaneously, achieving a balance between miniaturization and performance.
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
An antenna member is configured to be mounted on a circuit board and to be used as an antenna. The antenna member has a split ring resonating portion, an impedance matching portion and a feed portion. The split ring resonating portion is provided with a facing portion which forms a split. The split ring resonating portion has a first side portion, a second side portion and an upper portion. The upper portion connects the first side portion and the second side portion with each other. The feed portion is provided on at least one of the first side portion and the second side portion. The impedance matching portion is positioned above the feed portion in an up-down direction perpendicular to a lateral direction. The impedance matching portion couples the first side portion and the second side portion with each other.