Antenna Structure With Slot And Parasitic Elements
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Solution Overview
Problem
The incorporation of metal elements in mobile devices for aesthetic purposes negatively affects the antennas used for wireless communication, degrading communication quality.
Innovation Solution
A novel antenna structure incorporating a metal mechanism element with a slot, dielectric substrate, feeding radiation element, parasitic radiation elements, and a circuit element, which forms an antenna structure that minimizes size while supporting multiple frequency bands without being negatively impacted by the metal elements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If metal elements are incorporated into mobile devices for aesthetic purposes, then appearance quality is improved, but antenna performance deteriorates
Solution Approach 1:
The antenna structure is divided into multiple independent radiation elements (feeding radiation element, first parasitic radiation element, second parasitic radiation element, and additional radiation element) that are spatially separated and functionally independent. This segmentation allows each element to be optimized for specific frequency bands while reducing mutual interference from metal elements, thereby maintaining antenna performance despite the presence of metal aesthetic components.
Solution Approach 2:
A dielectric substrate is introduced as an intermediary material between the metal mechanism element and the antenna radiation elements. This dielectric layer acts as a mediator that electrically isolates the metal aesthetic elements from the antenna elements, preventing harmful electromagnetic interactions while allowing the metal elements to maintain their aesthetic function.
2Volume of moving object
If antenna size is minimized, then device compactness is improved, but bandwidth coverage deteriorates
Solution Approach 1:
The antenna structure is designed with multiple radiation elements that can simultaneously support multiple frequency bands (first, second, third, and fourth frequency bands). Each radiation element contributes to different frequency ranges, enabling the compact antenna structure to achieve universal multi-band functionality without requiring separate antennas for each band, thus maintaining both small size and wide bandwidth coverage.
Solution Approach 2:
The antenna elements are arranged in a three-dimensional space around the slot of the metal mechanism element, utilizing vertical and lateral dimensions rather than only horizontal expansion. This spatial arrangement allows multiple radiation elements to be packed into a compact volume while maintaining adequate separation for independent operation across different frequency bands.
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 improved communication quality by minimizing size, enhancing bandwidth, and maintaining a beautiful device appearance, suitable for various mobile communication devices.
Implementation Method 1
a feeding radiation element (150), a first parasitic radiation element (170), a second parasitic radiation element (180), and an additional radiation element (190)... An antenna structure is formed by the feeding radiation element (150), the circuit element (165), the first parasitic radiation element (170), the second parasitic radiation element (180), the additional radiation element (190), and the slot (120) of the metal mechanism element (110)
Data Source
AI summary
A mobile device includes a metal mechanism element, a dielectric substrate, a holder, a feeding radiation element, a ground plane, a shorting element, a circuit element, a first parasitic radiation element, a second parasitic radiation element, and an additional radiation element. The metal mechanism element has a slot. The ground plane and the shorting element are respectively coupled to the metal mechanism element. The circuit element is coupled between the shorting element and the ground plane. The first parasitic radiation element and the second parasitic radiation element are respectively coupled to the ground plane. The additional radiation element is adjacent to the feeding radiation element or is coupled to the feeding radiation element. An antenna structure is formed by the feeding radiation element, the circuit element, the first parasitic radiation element, the second parasitic radiation element, the additional radiation element, and the slot of the metal mechanism element.