Antenna Structure With Slot And Coupling Element
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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 dielectric substrate, a feeding radiation element, and a coupling radiation element, where the coupling radiation element is grounded, forming an equivalent capacitor loop structure that covers wideband operations by exciting the slot using a coupling mechanism, thereby enhancing bandwidth and impedance matching.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a conventional antenna structure is used, then the device size is reduced, but the bandwidth is insufficient and cannot cover multiple frequency bands
Solution Approach 1:
The patent combines the feeding radiation element and coupling radiation element into a single integrated antenna structure with shared ground connections, merging multiple functional elements into one compact unit that achieves wideband performance without increasing overall device volume
Solution Approach 2:
The antenna structure is designed to simultaneously support multiple frequency bands (2.4GHz, 5GHz, and 6GHz Wi-Fi bands) through a single unified design, making it a universal antenna that performs multiple communication functions without requiring separate antennas for each band
2Volume of moving object
If the antenna size is reduced, then the device becomes more compact, but the radiation efficiency deteriorates
Solution Approach 1:
The patent utilizes three-dimensional space by positioning the feeding and coupling radiation elements on opposite sides of the ground connection, creating a vertical configuration that efficiently utilizes available space while maintaining effective radiation patterns without compromising efficiency due to size constraints
3Adaptability or versatility
If a wideband antenna is designed, then multiple frequency bands are covered, but the impedance matching becomes more difficult
Solution Approach 1:
The patent achieves wideband impedance matching by carefully controlling geometric parameters of the radiation elements, including the width and length ratios of the feeding and coupling elements, and their spacing from the ground connection, allowing broad frequency coverage through optimized dimensional parameters rather than complex matching networks
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 Wi-Fi 6E, with improved radiation efficiency and adaptability to different environments, making it suitable for various mobile communication devices.
Implementation Method 1
the coupling radiation element, the feeding radiation element, and the slot form an equivalent capacitor loop structure
Implementation Method 2
covers wideband operations by exciting the slot using a coupling mechanism
Data Source
AI summary
An antenna structure includes a metal mechanism element, a dielectric substrate, a feeding radiation element, and a coupling radiation element. The metal mechanism element has a slot. The slot has a first closed end and a second closed end. The dielectric substrate has a first surface and a second surface which are opposite to each other. The feeding radiation element is coupled to a signal source, and is disposed on the second surface of the dielectric substrate. The feeding radiation element has a first vertical projection on the metal mechanism element. The coupling radiation element is coupled to a ground voltage, and is disposed on the first surface of the dielectric substrate. The coupling radiation element has a second vertical projection on the metal mechanism element. The second vertical projection of the coupling radiation element at least partially overlaps the first vertical projection of the feeding radiation element.