Wearable Antenna Structure for Wideband Smart Glasses
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Solution Overview
Problem
Wearable devices, such as smart glasses, lack sufficient space for accommodating antennas for wireless communication, posing a challenge for antenna designers.
Innovation Solution
A wearable device with an antenna structure comprising a feeding radiation element, ground element, connection radiation element, additional radiation element, first and second grounding radiation elements, and a carrier element, all disposed on a nonconductive frame, forming an antenna structure that covers multiple frequency bands for wireless communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If a conventional antenna structure is used in wearable devices, then wireless communication function is achieved, but the device size becomes too large to fit in small form factors like smart glasses
Solution Approach 1:
The antenna is divided into multiple separate radiation elements (first radiation element, second radiation element, third radiation element) that are distributed across different locations on the wearable device frame. Each element handles specific frequency bands, allowing the total antenna functionality to be achieved without requiring a single large antenna structure.
Solution Approach 2:
The antenna elements are arranged in a three-dimensional spatial distribution across the wearable device frame rather than being confined to a single planar surface. This spatial distribution allows multiple radiation elements to coexist in limited space while maintaining their individual radiation patterns and frequency band coverage.
2Adaptability or versatility
If multiple frequency bands are supported in a small antenna structure, then wideband communication is achieved, but the antenna design complexity increases
Solution Approach 1:
Each radiation element is designed to serve multiple functions: the first radiation element handles 2.4GHz and 5GHz bands, the second radiation element handles 5.9GHz and 6GHz bands, and the third radiation element handles 6.5GHz band. This multi-functionality allows comprehensive frequency band coverage while using simple individual element structures.
Solution Approach 2:
Different radiation elements are strategically positioned at different locations on the wearable device frame (first element on the bridge, second element on the temple, third element on the earpiece). Each location provides optimal characteristics for specific frequency bands, allowing the antenna system to achieve wideband coverage through localized optimization rather than complex uniform design.
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 supports wideband operations covering conventional WLAN and next-generation Wi-Fi 6E, minimizing size and reducing manufacturing costs while ensuring effective wireless communication.
Implementation Method 1
a feeding radiation element (110), a ground element (120), a connection radiation element (130), an additional radiation element (140), a first grounding radiation element (150), a second grounding radiation element (160, all disposed on the carrier element (170). An antenna structure is formed by the feeding radiation element (110), the ground element (120), the connection radiation element (130), the additional radiation element (140), the first grounding radiation element (150), and the second grounding radiation element (160)
Data Source
AI summary
A wearable device includes a feeding radiation element, a ground element, a connection radiation element, an additional radiation element, a first grounding radiation element, a second grounding radiation element, and a carrier element. The feeding radiation element has a positive feeding point. The ground element has a negative feeding point. The additional radiation element is coupled through the connection radiation element to the feeding radiation element. The first grounding radiation element is coupled to the ground element. The first grounding radiation element is adjacent to the feeding radiation element. The second grounding radiation element is coupled to the ground element. The second grounding radiation element is adjacent to the feeding radiation element. An antenna structure is formed by the feeding radiation element, the ground element, the connection radiation element, the additional radiation element, the first grounding radiation element, and the second grounding radiation element.