Slot Antenna Structure for Compact Multi-Band Mobile Coverage
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Designing a small wideband antenna element that can effectively cover multiple frequency bands for mobile devices is a critical challenge due to insufficient bandwidth in existing antennas, affecting communication quality.
Innovation Solution
The proposed antenna structure incorporates a metal mechanism element with a slot, a ground element, a feeding radiation element, and a dielectric substrate, where the slot and feeding radiation element are excited to generate multiple frequency bands, enhancing bandwidth and impedance matching through strategic design and placement of components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a conventional antenna design is used, then the antenna structure is simple, but the bandwidth is insufficient and cannot cover multiple frequency bands
Solution Approach 1:
The patent combines multiple antenna elements (first antenna element, second antenna element, third antenna element) into a single integrated antenna structure. These elements are formed on the same substrate and share common grounding, merging multiple functions into one unified structure that can operate across multiple frequency bands simultaneously.
Solution Approach 2:
The antenna structure is designed to perform multiple functions by supporting operations across three distinct frequency bands (first, second, and third bands). The same physical structure can be excited to generate different frequency bands through different feeding points and configurations, making it a universal antenna solution for diverse communication standards.
2Adaptability or versatility
If the antenna bandwidth is increased to cover multiple frequency bands, then the communication quality improves, but the antenna size increases
Solution Approach 1:
The patent utilizes the third dimension (vertical stacking) by placing multiple antenna elements on different layers or positions of the substrate. This allows the antenna to achieve wideband performance through spatial arrangement rather than increasing the planar footprint, effectively using vertical space to overcome the bandwidth-size tradeoff.
Solution Approach 2:
The antenna elements are arranged in a nested configuration where smaller antenna elements are positioned within or near larger ones. This nested layout allows multiple frequency bands to be supported within a compact overall structure, with each element contributing to different frequency ranges while sharing the same space efficiently.
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 across multiple frequency bands, including WLAN 2.4 GHz/5 GHz and next-generation Wi-Fi 6E, with improved radiation efficiency and reduced size, suitable for various mobile communication devices.
Implementation Method 1
The slot of the metal mechanism element is excited to generate a first frequency band and a second frequency band
Implementation Method 2
The feeding radiation element is excited to generate a third frequency band
Data Source
AI summary
An antenna structure includes a metal mechanism element, a ground element, a feeding radiation element, and a dielectric substrate. The metal mechanism element has a slot. The slot has a first closed end and a second closed end. The ground element is coupled to the metal mechanism element. The feeding radiation element has a feeding point. The feeding radiation element is coupled to the ground element. The dielectric substrate has a first surface and a second surface which are opposite to each other. The feeding radiation element is disposed on the first surface of the dielectric substrate. The second surface of the dielectric substrate is adjacent to the metal mechanism element. The slot of the metal mechanism element is excited to generate a first frequency band and a second frequency band. The feeding radiation element is excited to generate a third frequency band.