Antenna Structure With Coupled Ring And Branch Radiators
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Solution Overview
Problem
The challenge is to design an antenna structure that covers the broadband frequency band of Wifi 6E within limited internal space of electronic devices without increasing the complexity of layout and assembly by continuously adding parasitic branches.
Innovation Solution
An antenna structure comprising a branching radiator with multiple first radiation modes and a ring-shaped radiator with multiple second radiation modes, coupled through an antenna gap to broaden the radiation bandwidth, eliminating the need for additional parasitic branches and enhancing miniaturization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If parasitic branches are continuously increased to widen resonance bandwidth, then radiation bandwidth is improved, but device complexity and layout difficulty increase
Solution Approach 1:
The patent merges the ring-shaped radiator and branching radiator into a single integrated antenna structure that supports multiple radiation modes. The ring-shaped radiator provides first radiation modes while the branching radiator provides second radiation modes, and their coupling through the antenna gap creates third radiation modes. This consolidation eliminates the need for separate parasitic branches while achieving broadband coverage through the interaction of multiple radiation modes within a unified structure.
Solution Approach 2:
The patent transitions from a planar antenna design to a three-dimensional structure by introducing a ring-shaped radiator that surrounds the branching radiator. This spatial arrangement creates additional radiation dimensions and coupling paths through the antenna gap, enabling broadband performance without requiring multiple parasitic branches in the same plane, thus simplifying layout while expanding bandwidth.
2Volume of moving object
If antenna structure is miniaturized to fit limited internal space, then device size is reduced, but radiation bandwidth may be compromised
Solution Approach 1:
The patent implements a nested configuration where the branching radiator is positioned inside the ring-shaped radiator, with the ring surrounding the branch structure. This nesting arrangement maximizes the use of available three-dimensional space within the electronic device, allowing the antenna to achieve broadband performance through the coupling between the nested radiators while maintaining a compact overall volume that fits limited internal spaces.
3Adaptability or versatility
If multiple frequency bands are supported to cover Wifi 6E, then communication capability is improved, but mutual interference between bands increases
Solution Approach 1:
The patent creates distinct local radiation characteristics by designing the ring-shaped radiator and branching radiator with different geometric properties and radiation modes. The ring-shaped radiator is optimized for certain frequency ranges while the branching radiator targets other ranges, and their spatial separation through the antenna gap structure creates localized radiation patterns that minimize overlap and mutual interference between different frequency bands, enabling clean multi-band operation.
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
The solution effectively covers the Wifi 6E frequency band while supporting Wifi 2.4G communication, maintaining antenna performance in complex electromagnetic environments and reducing mutual interference between frequency bands.
Implementation Method 1
the ring-shaped radiator and the branching radiator are coupled through the antenna gap to form coupled radiation modes
Implementation Method 2
a coupling among the first radiation modes, the second radiation modes and the coupled radiation modes broaden a radiation bandwidth
Data Source
AI summary
An antenna structure includes: a branching radiator, including a plurality of first radiation modes; a ring-shaped radiator surrounding the branching radiator, and including a plurality of second radiation modes; a feeding point and a grounding point, one of which is connected to the ring-shaped radiator, and the other is connected to the branching radiator; an antenna gap, which is provided between the branching radiator and the ring-shaped radiator. The ring-shaped radiator and the branching radiator are coupled through the antenna gap to form coupled radiation modes. A coupling among the first radiation modes, the second radiation modes and the coupled radiation modes broaden a radiation bandwidth of the antenna structure. The antenna structure may be incorporated in an electronic device.