3D Antenna Structure for Metal Casing Efficiency
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Solution Overview
Problem
In designing antennas within metal casings, there is a trade-off between antenna efficiency and the integrity/appearance of the casing, as the distance between the antenna and metal ground is limited, typically not exceeding 5 mm, leading to poor antenna efficiency and size constraints.
Innovation Solution
A three-dimensional electronic component with an antenna structure featuring radiating metal portions, adjusting metal branches, and ground connections on multiple surfaces, allowing the antenna to be directly positioned on the outer surface while maintaining efficiency and appearance integrity by adjusting shape and length according to the component's size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an antenna window is opened in the metal casing to improve antenna efficiency, then antenna performance is improved, but the appearance integrity of the casing deteriorates
Solution Approach 1:
The patent extracts the antenna structure from the traditional enclosed casing design and positions it directly on the outer surface of the electronic component. This allows the antenna to function effectively without requiring an opening in the casing, thus maintaining the casing's appearance integrity while achieving good antenna performance through direct surface mounting and resonance mode utilization
Solution Approach 2:
The patent transitions the antenna from a planar two-dimensional layout to a three-dimensional configuration that utilizes multiple surfaces (first, second, third, and fourth surfaces) of the electronic component. This dimensional expansion allows the antenna to achieve resonance modes and improve efficiency without compromising the casing's external appearance
2Ease of manufacture
If the distance between the antenna and metal ground is limited to within 5 mm to maintain stacking constraints, then manufacturing feasibility is improved, but antenna efficiency deteriorates
Solution Approach 1:
The patent changes the operational parameters of the antenna by designing it to utilize fundamental resonance modes and frequency-doubling resonance modes. By adjusting the antenna's geometric parameters (length, width, and configuration across multiple surfaces) to match these resonance modes, the antenna achieves high efficiency even with the constrained distance of within 5 mm from the metal ground, thus resolving the contradiction between manufacturing feasibility and antenna performance
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 enhances antenna efficiency by generating fundamental and frequency-doubling resonance modes across various frequency bands, overcoming physical size limitations and maintaining appearance integrity.
Implementation Method 1
generating fundamental and frequency-doubling resonance modes across various frequency bands
Data Source
AI summary
A three-dimensional electronic component includes a first surface, a second surface, a third surface, and a fourth surface, and an antenna structure. The antenna structure includes a first radiating metal portion, a second radiating metal portion, an adjusting metal branch, a first ground connection portion, a second ground connection portion, a feed point, and a ground point. The first radiating metal portion on the first surface extends to the second surface. The second radiating metal portion on the first surface extends to the third surface. A gap is between the first radiating metal portion and the second radiating metal portion. The adjusting metal branch on the first surface is connected to the first radiating metal portion. The feed point on the first radiating metal portion is close to the gap. The ground point on the second radiating metal portion is close to the gap.