Ultra-Wideband Antenna for Reversible Device Hinge
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Solution Overview
Problem
The design of ultra-wideband antennas for reversible electronic devices, such as notebook computers, is constrained by the narrow bezel and high screen-to-body ratio, leading to poor antenna isolation and performance, especially with metal bodies, where traditional methods like isolation stubs or neutralization lines only achieve limited frequency band adjustments and compromise antenna performance.
Innovation Solution
An ultra-wideband antenna design that utilizes a gapped groove and adjustable hinge structure, integrated with RF signal sources and electrical connection structures, to form multiple ultra-wideband antennas without additional slotting or slitting, covering 2G, 3G, 4G, 5G, BT, and Wi-Fi frequency bands, while optimizing antenna isolation to better than -10 dB.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If traditional antenna placement methods are used in narrow bezel devices, then industrial design requirements are met, but antenna isolation and performance deteriorate
Solution Approach 1:
The patent transitions from traditional 2D antenna placement on flat surfaces to 3D hinge area utilization, exploiting the third dimension created by the hinge mechanism to achieve better antenna isolation while maintaining narrow bezel design
Solution Approach 2:
The patent utilizes the dynamic hinge mechanism to create adjustable antenna clearance space, allowing the antenna installation area to change with hinge rotation, thereby achieving both narrow bezel aesthetics and adequate antenna isolation
2Adaptability or versatility
If isolation stub or neutralization line methods are used, then frequency band adjustment is achieved, but antenna performance is compromised
Solution Approach 1:
The patent extracts the isolation function from traditional stub/neutralization line methods and relocates it to the hinge area through gapped groove structures, separating the isolation mechanism from the antenna radiation elements to preserve antenna performance
Solution Approach 2:
The gapped groove structures in the hinge area serve as intermediary isolation elements between multiple antennas, providing frequency band adaptability without directly interfering with antenna radiation patterns
3Strength
If metal body design is used, then structural strength and heat dissipation are improved, but antenna installation clearance is reduced
Solution Approach 1:
The patent moves antenna installation from the metal body surface to the hinge area, utilizing the dimensional space created by the hinge mechanism to achieve adequate antenna clearance without compromising metal body structural strength
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 design effectively addresses the constraints of narrow spaces and metal bodies, achieving improved antenna performance and isolation, ensuring efficient communication across multiple frequency bands without compromising industrial design aesthetics or increasing SAR values.
Implementation Method 1
the hinge excites the gapped groove to form a first ultra-wideband antenna
Data Source
AI summary
The present disclosure provides an ultra-wideband antenna for a reversible electronic device in a narrow space including: an upper half and a lower half; a hinge connected with the upper half and the lower half; a first RF signal source, loaded on the hinge; an electrical connection structure, placed on one side of the first RF signal source and electrically connected with the upper half and the lower half; a gapped groove, extending inwardly to the electrical connection structure along the outer side of the upper half and the outer side of the lower half; the hinge is spanned on the gapped groove; the hinge excites the gapped groove to form a first ultra-wideband antenna. While realizing the ultra-wideband antennas, it can also integrate with other multiple antennas, and their isolations are better than −10 dB, which basically meets the antenna performance requirements.