Low-Profile Antenna With Folded Radiators
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Solution Overview
Problem
Current fifth-generation mobile communication antennas are relatively high in profile, failing to meet the demand for miniaturization while maintaining wide bandwidth and good directivity.
Innovation Solution
The antenna design features a radiation part with four radiators forming gaps, connected to a grounding sheet through ground connection parts comprising attaching sheets and metal through holes, allowing for a low-profile configuration with a substrate arrangement that reduces the antenna's profile and enhances frequency coverage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If a conventional electromagnetic dipole antenna structure is used, then wide bandwidth and good directivity are achieved, but the antenna profile becomes relatively high
Solution Approach 1:
The patent transitions from a planar antenna structure to a three-dimensional folded structure. The radiator is folded along specific lines to create multiple layers and levels, utilizing vertical space to reduce the horizontal profile while maintaining the electrical length required for wide bandwidth operation. This dimensional transformation allows the antenna to fit within a smaller footprint without sacrificing performance.
Solution Approach 2:
The antenna design embeds multiple functional elements within a compact structure. The folded radiator creates nested layers where conductive paths are arranged in multiple levels, with feeding structures and grounding elements integrated within the folded configuration. This nesting approach allows the antenna to maintain its electrical characteristics while reducing the overall profile height.
2Volume of moving object
If the antenna profile is reduced for miniaturization, then space is saved, but bandwidth and directivity performance may deteriorate
Solution Approach 1:
The patent employs parameter optimization in the folding configuration, including adjusting fold angles, layer spacing, and conductor trace widths to maintain impedance matching and radiation characteristics. By carefully controlling these geometric parameters during the folding process, the antenna achieves miniaturization while preserving wide bandwidth and good directivity performance through optimized electromagnetic field distribution.
Data Source
AI summary
The invention relates to an antenna and an electronic device. The antenna has a radiation part, a grounding sheet arranged separated from the radiation part and a number of ground connection parts. The radiation part has four radiators forming a first gap and a second gap. Each radiator is electrically connected to the grounding sheet through a ground connection part. The ground connection part includes at least an attaching sheet and a number of metal through holes. Each side of opposite two sides of each attaching sheet is electrically connected to at least one of the metal through holes. The electronic device includes the antenna. According to the technical scheme, the antenna has the advantage of low profile.