Wideband Antenna Structure with Segmented Slots
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Solution Overview
Problem
Designing a wideband antenna with insufficient bandwidth negatively affects communication quality in mobile devices, particularly in devices using multiple frequency bands such as 2G, 3G, LTE, Wi-Fi, and Bluetooth systems.
Innovation Solution
The antenna structure incorporates a nonconductive supporting element with specifically designed feeding and grounding radiation elements, including slots, to cover a wide frequency range from 2400 MHz to 2500 MHz and 5150 MHz to 5850 MHz, utilizing a single signal source and ground voltage connections to optimize impedance matching and bandwidth.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a conventional antenna design is used, then the device structure is simple, but the bandwidth is insufficient
Solution Approach 1:
The antenna structure is divided into multiple radiation elements (first and second feeding radiation elements, first and second grounding radiation elements) with different shapes and orientations. Each element contributes to different frequency bands, enabling the antenna to cover both 2.4 GHz and 5 GHz bands simultaneously through segmented functional components rather than a single omnibus design.
Solution Approach 2:
The antenna transitions from planar 2D layout to 3D spatial configuration by positioning radiation elements on opposite sides of the nonconductive supporting element. The first feeding radiation element and first grounding radiation element are disposed on the first surface, while the second feeding radiation element and second grounding radiation element are disposed on the second surface, utilizing three-dimensional space to achieve wideband performance without increasing footprint area.
2Adaptability or versatility
If multiple antennas are used to cover different frequency bands, then the bandwidth requirement is met, but the device size increases
Solution Approach 1:
Multiple antenna functions are merged into a single integrated structure. The first and second feeding radiation elements share a common signal source connection, and the first and second grounding radiation elements share a common ground voltage connection. This merging allows the antenna to support both 2.4 GHz and 5 GHz frequency bands through one unified structure rather than requiring separate physical antennas for each band.
Solution Approach 2:
The antenna structure is designed as a universal multi-functional element that can operate across multiple frequency bands (2.4 GHz and 5 GHz) simultaneously. The radiation elements are configured with specific dimensions and orientations that enable them to resonate at different frequencies, making the single antenna structure capable of performing multiple communication functions without requiring band-specific dedicated antennas.
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 operation, supporting WLAN 2.4 GHz/5 GHz and potentially sub-6 GHz 5G communication systems, with a compact size and reduced manufacturing costs, while maintaining high communication quality.
Implementation Method 1
The first feeding radiation element is coupled to a signal source. The first feeding radiation element has a first slot. The first grounding radiation element is coupled to a ground voltage. The first grounding radiation element is adjacent to the first feeding radiation element.
Data Source
AI summary
An antenna structure includes a nonconductive supporting element, a first feeding radiation element, a first grounding radiation element, a second feeding radiation element, and a second grounding radiation element. The first feeding radiation element and the second feeding radiation element are coupled to a signal source. The first feeding radiation element has a first slot. The second feeding radiation element has a second slot. The first grounding radiation element and the second grounding radiation element are coupled to a ground voltage. The first grounding radiation element is adjacent to the first feeding radiation element. The second grounding radiation element is adjacent to the second feeding radiation element. The first feeding radiation element, the first grounding radiation element, the second feeding radiation element, and the second grounding radiation element are disposed on the nonconductive supporting element.