Nested Multi-Element Antenna Structure for Wideband Mobile Bands
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Solution Overview
Problem
Existing antennas in mobile devices often have insufficient bandwidth, leading to degraded communication quality.
Innovation Solution
A novel antenna structure comprising multiple radiation elements and a nonconductive support element, designed to cover multiple frequency bands including 2400 MHz to 2500 MHz, 5150 MHz to 5850 MHz, and 5925 MHz to 7125 MHz, with specific element configurations and dimensions to enhance bandwidth and adaptability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional antenna design is used, then the device structure remains simple, but the bandwidth is insufficient leading to degraded communication quality
Solution Approach 1:
The antenna structure is divided into multiple independent radiation elements (first radiation element, second radiation element, third radiation element, fourth radiation element, fifth radiation element, sixth radiation element) that can be independently designed and optimized for different frequency bands. Each radiation element is coupled to the feeding radiation element or ground element, allowing separate tuning and optimization without affecting other elements, thus achieving wideband operation while maintaining modular design simplicity
Solution Approach 2:
The second radiation element is positioned at least partially surrounded by the first radiation element, and the fourth radiation element is positioned at least partially surrounded by the third radiation element. This nested configuration allows multiple radiation elements to share space efficiently, achieving wideband coverage through multiple elements without proportionally increasing the overall antenna footprint or device complexity
2Adaptability or versatility
If the antenna bandwidth is increased to cover multiple frequency bands, then communication quality improves, but the antenna structure becomes more complex
Solution Approach 1:
The feeding radiation element serves multiple functions by being coupled to all six radiation elements and the ground element, acting as a common excitation source for the entire antenna system. The ground element similarly serves as a common reference for all radiation elements. This multi-functional design allows a single feeding network to support wideband operation across multiple frequency bands (2400-2500 MHz, 5150-5850 MHz, 5925-7125 MHz) without requiring separate feeding structures for each band, thus achieving versatility without proportional complexity increase
Solution Approach 2:
The antenna structure utilizes three-dimensional spatial arrangement with radiation elements positioned at different heights and orientations above the ground element. The nonconductive support element provides vertical dimension for mounting radiation elements at different levels. This dimensional exploitation allows multiple frequency bands to be covered through spatial diversity rather than requiring complex planar arrangements, achieving wideband adaptability with manageable structural 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
The antenna structure provides wideband operation, maintaining high communication quality and adaptability across different modes, suitable for mobile devices like convertible notebook computers.
Implementation Method 1
a feeding radiation element, a first radiation element, a second radiation element, a third radiation element, a fourth radiation element, a fifth radiation element, and a sixth radiation element... The antenna structure covers a first frequency band, a second frequency band, and a third frequency band
Data Source
AI summary
An antenna structure includes a ground element, a feeding radiation element, a connection radiation element, a grounding radiation element, a shorting radiation element, a first radiation element, a second radiation element, a third radiation element, a fourth radiation element, and a nonconductive support element. The feeding radiation element has a positive feeding point. The first radiation element and the second radiation element are coupled to the feeding radiation element. The second radiation element is at least partially surrounded by the first radiation element. The grounding radiation element has a negative feeding point. The grounding radiation element is coupled through the connection radiation element to the feeding radiation element. The shorting radiation element is coupled to the ground element. The third radiation element and the fourth radiation element are coupled to the shorting radiation element. The fourth radiation element is at least partially surrounded by the third radiation element.