Multi-Element Antenna Structure for Wideband Mobile Coverage
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Solution Overview
Problem
Existing antennas in mobile devices often have insufficient operational bandwidth, leading to degraded communication quality, and there is a challenge in designing small-size, wideband antenna structures that can cover multiple frequency bands efficiently.
Innovation Solution
The antenna structure comprises a feeding radiation element and multiple coupled radiation elements, including terminal widening and extension portions, with precise gap and length configurations, allowing it to cover frequency bands from 791 MHz to 2690 MHz, and is designed to be compact and cost-effective.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If a conventional antenna structure is used, then the device size is small, but the operational bandwidth is insufficient
Solution Approach 1:
The antenna structure is divided into multiple radiation elements (first, second, third, fourth, fifth, and sixth radiation elements) with different lengths and configurations. Each element contributes to different frequency bands, enabling wideband operation without increasing the overall antenna footprint. The segmentation allows parallel operation across multiple frequency ranges simultaneously.
Solution Approach 2:
The patent utilizes vertical stacking and three-dimensional arrangement of radiation elements on the carrier element. By transitioning from a planar to a three-dimensional structure, the antenna achieves wideband coverage while maintaining a compact form factor. The different heights and positions of radiation elements create additional operational dimensions for frequency diversity.
2Quantity of substance
If multiple radiation elements are added to increase bandwidth, then the operational bandwidth improves, but the device complexity increases
Solution Approach 1:
Multiple radiation elements are integrated onto a single carrier element, sharing common grounding structures and support infrastructure. The feeding radiation element serves as a common interface for all radiation elements, reducing the need for separate feeding networks. This merging approach increases bandwidth while controlling structural complexity.
Solution Approach 2:
The antenna structure is designed to simultaneously support multiple frequency bands (700 MHz, 850 MHz, 900 MHz, 1800 MHz, 1900 MHz, 2100 MHz, 2300 MHz, 2500 MHz, and Wi-Fi bands) using the same physical structure. The radiation elements are configured to serve multiple communication standards (LTE, Wi-Fi, Bluetooth) from a single integrated antenna system.
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 proposed antenna structure achieves wideband operation across multiple frequency bands with a small form factor, supporting LTE and other communication systems while maintaining low manufacturing costs and integrating SAR detection without size increase.
Implementation Method 1
The antenna structure comprises 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 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 first radiation element is coupled to the feeding radiation element. The second radiation element is coupled to the feeding radiation element. The first radiation element and the second radiation element substantially extend in opposite directions. The third radiation element is coupled to a first grounding point. The fourth radiation element is coupled to the third radiation element. Both the third radiation element and the fourth radiation element are adjacent to the second radiation element. The fifth radiation element is coupled to a second grounding point. The fifth radiation element is adjacent to the first radiation element. The sixth radiation element is coupled to a third grounding point.