Multi-Radiation Element Antenna for Wideband 5G Coverage
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Solution Overview
Problem
Designing a small-size, wideband antenna element that can effectively cover multiple frequency bands for mobile devices is challenging due to insufficient bandwidth in existing antenna designs, affecting communication quality.
Innovation Solution
A wideband antenna structure comprising a nonconductive supporting element and multiple radiation elements, including a feeding radiation element and others, strategically positioned and sized to cover frequency bands from 1700 MHz to 5925 MHz, utilizing coupling gaps and dimensions optimized to 0.25 wavelengths for each band, allowing for efficient signal transmission across multiple frequency ranges.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a traditional antenna design is used, then the structure is simple, but the bandwidth is insufficient and cannot cover multiple frequency bands
Solution Approach 1:
The antenna is divided into multiple radiation elements (first, second, third, and fourth radiation elements) with different lengths and configurations. Each radiation element is designed to resonate at different frequency bands, allowing the antenna to cover a wide bandwidth from 1700 MHz to 5925 MHz. The segmentation of the antenna into multiple functional elements enables simultaneous support for multiple frequency bands including 1800 MHz, 2100 MHz, 2600 MHz, and 5800 MHz bands.
Solution Approach 2:
The antenna structure transitions from a planar two-dimensional configuration to a three-dimensional configuration by arranging radiation elements at different heights and orientations above the ground plane. The first and second radiation elements are positioned at different vertical levels, creating a multi-layered structure that enhances impedance matching and bandwidth across multiple frequency bands while maintaining a compact form factor.
2Volume of moving object
If the antenna size is reduced for mobile devices, then the device becomes more compact, but the bandwidth and signal transmission capability deteriorate
Solution Approach 1:
The antenna structure employs a nested configuration where multiple radiation elements are arranged in a compact, space-efficient manner. The first and second radiation elements are positioned in close proximity with different orientations, effectively utilizing the available three-dimensional space. This nested arrangement allows the antenna to maintain a small footprint suitable for mobile devices while supporting multiple frequency bands through the combined radiation patterns of the nested elements.
Solution Approach 2:
By transitioning to a three-dimensional configuration with radiation elements at different vertical levels and orientations, the antenna achieves wide bandwidth coverage without increasing the planar footprint. The multi-dimensional arrangement allows compact integration into mobile devices while maintaining excellent impedance matching and signal transmission capability across 1700 MHz to 5925 MHz frequency range.
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 achieves wideband operations, supporting next-generation 5G communication with improved bandwidth and impedance matching, resulting in enhanced communication quality and a compact, aesthetically pleasing design suitable for various mobile devices.
Implementation Method 1
a feeding radiation element (120), a first radiation element (130), a second radiation element (140), a third radiation element (150), and a fourth radiation element (160)... A first coupling gap (GC1) is formed between the first radiation element (130) and the feeding radiation element (120)... A second coupling gap (GC2) is formed between the second radiation element (140) and the feeding radiation element (120)... A third coupling gap (GC3) is formed between the fourth radiation element (160) and the feeding radiation element (120)
Data Source
AI summary
An antenna structure includes a nonconductive supporting element, a feeding radiation element, a first radiation element, a second radiation element, a third radiation element, and a fourth radiation element. The first radiation element is coupled to a ground voltage. A first coupling gap is formed between the first radiation element and the feeding radiation element. The second radiation element is coupled to the first radiation element. A second coupling gap is formed between the second radiation element and the feeding radiation element. The third radiation element is coupled to the first radiation element. The fourth radiation element is coupled to the ground voltage. A third coupling gap is formed between the fourth radiation element and the feeding radiation element. The feeding radiation element, the first radiation element, the second radiation element, the third radiation element, and the fourth radiation element are all disposed on the nonconductive supporting element.