Antenna Structure With Segmented Metallic Frame For Wireless Devices
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Solution Overview
Problem
Metal housing in wireless communication devices interferes with antenna signals, leading to poor radiation performance and unstable wideband performance, which affects the appearance, mechanical strength, and heat dissipation of these devices.
Innovation Solution
The antenna structure incorporates a metallic frame with notch portions and multiple radiating and grounding portions, along with switch circuits and adjustable inductors, to operate in multiple frequency bands and provide isolation between antennas, enhancing radiation efficiency and signal integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a metal housing is used, then appearance and mechanical strength are improved, but antenna radiation performance deteriorates due to signal interference
Solution Approach 1:
The metal housing is segmented into a frame structure with multiple radiating portions (first, second, third, and fourth radiating portions) instead of a solid continuous structure. This segmentation creates isolation regions that prevent signal interference while maintaining mechanical strength through the distributed frame architecture.
Solution Approach 2:
Isolation regions are introduced as intermediary non-conductive elements between different radiating portions of the antenna. These isolation regions act as mediators that prevent electromagnetic interference between adjacent radiating portions while allowing each portion to function independently for wideband performance.
2Temperature
If a metal housing is used, then heat dissipation is improved, but antenna radiation performance deteriorates
Solution Approach 1:
The continuous metal housing is segmented into a frame structure with isolation regions, maintaining thermal conduction pathways through the frame while preventing electromagnetic interference. The distributed metal portions continue to dissipate heat effectively without compromising antenna performance.
3Adaptability or versatility
If multiple frequency bands are supported, then adaptability is improved, but device complexity increases due to additional components
Solution Approach 1:
The antenna structure is designed with multiple radiating portions that can each operate across different frequency bands. The first and second radiating portions support first and second frequency bands, while the third and fourth radiating portions support third and fourth frequency bands, allowing a single antenna structure to provide universal wideband coverage without requiring separate antennas for each band.
Solution Approach 2:
Multiple antenna functions are merged into a single integrated frame structure. The isolation regions enable different radiating portions to be electrically isolated while physically integrated in one structure, combining multiple frequency band capabilities into a unified antenna system that reduces overall device complexity.
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 improves the antenna's radiation efficiency across various frequency bands, achieving stable and reliable performance while maintaining the benefits of a metal housing, such as appearance and mechanical strength.
Implementation Method 1
The first radiating portion H1 and the second radiating portion H2 may respectively operate in a first mode and a second mode to generate radiation signals respectively in a first frequency band and a second frequency band
Data Source
AI summary
An antenna structure utilizing metallic frame of electronic device to simultaneously send and receive radio waves on multiple frequencies includes first and second feeding sources and the metallic frame. A notch in the metallic frame creates first and second radiating portions. The first feeding source feeds the first radiating portion, and a first mode and a second mode can be activated simultaneously to generate radiation signals in a first frequency band and a second frequency band. The second feeding source feeds the second radiating portion and a third mode and a fourth mode can be simultaneously activated to generate radiation signals in a third frequency band and a fourth frequency band. A wireless communication device is also provided. The wireless communication device includes a motherboard and the antenna structure.