Eyewear Slot-Ring Antenna Layout for Minimal Coupling
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Solution Overview
Problem
Current wearable augmented reality devices, such as smart glasses, face challenges in integrating efficient wireless communication systems due to space and weight constraints, while needing to comply with safety regulations and maintain fashion appeal, especially in incorporating multi-band orthogonal antenna designs for low latency connectivity.
Innovation Solution
The integration of a slot-ring antenna architecture within the eyewear frame, utilizing a slot-ring concept that leverages the frame structure as an antenna, allowing for flexible multi-band radiation and efficient on-body performance, with orthogonal E-field vectors to minimize coupling and support the same frequency band, while being compact and fashion-friendly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional multi-band orthogonal antenna designs are integrated into wearable AR devices, then wireless communication performance is improved, but device volume and weight increase
Solution Approach 1:
The patent combines multiple antenna functions into a single integrated slot-ring structure that serves as both the frame component and the antenna element. The slot-ring geometry inherently supports multi-band operation and orthogonal polarization patterns, eliminating the need for separate antenna components and reducing overall device volume.
Solution Approach 2:
The eyewear frame structure is designed to serve dual purposes: providing structural support and housing the antenna functionality. The slot-ring antenna is integrated directly into the frame, allowing the same structural element to perform both mechanical and electromagnetic functions, thereby reducing the number of components needed.
2Reliability
If traditional multi-band orthogonal antenna designs are integrated into wearable AR devices, then wireless communication performance is improved, but device weight increases
Solution Approach 1:
The patent combines multiple antenna functions into a single integrated slot-ring structure that serves as both the frame component and the antenna element. The slot-ring geometry inherently supports multi-band operation and orthogonal polarization patterns, eliminating the need for separate antenna components and reducing overall device volume.
Solution Approach 2:
The eyewear frame structure is designed to serve dual purposes: providing structural support and housing the antenna functionality. The slot-ring antenna is integrated directly into the frame, allowing the same structural element to perform both mechanical and electromagnetic functions, thereby reducing the number of components needed.
3Reliability
If slot-ring antenna architecture is integrated into the eyewear frame, then antenna coupling is minimized, but manufacturing complexity increases
Solution Approach 1:
The slot-ring antenna is divided into distinct first and second portions that are positioned at specific locations on the eyewear frame (e.g., temples or bridges). This segmentation allows each portion to be optimized for specific frequency bands and polarization patterns while maintaining physical separation to minimize coupling between antenna elements.
Solution Approach 2:
Different portions of the slot-ring antenna structure are designed with locally optimized geometries to achieve specific electromagnetic properties. The first and second portions have different orientations and dimensions tailored to generate orthogonal E-field patterns, while the overall structure maintains consistency with the frame 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
This solution enables high-speed wireless connectivity in wearable AR devices, ensuring efficient radiation patterns, minimal coupling between antenna elements, and compliance with safety regulations, while reducing the physical volume and weight, thus enhancing the device's performance and appeal.
Implementation Method 1
a slot ring antenna having first and second portions configured to generate E-fields that are orthogonal to each other at a frequency
Data Source
AI summary
Eyewear with a slot ring antenna generating E-fields that are orthogonal to each other at a frequency. The slot ring antenna has a first portion including an inner ring and an outer ring configured to generate a first E-field in a first direction, and a second portion having a respective inner ring and the outer right configured to generate a second E-field in a second direction that is orthogonal to the first E-field. The outer ring encompasses the respective inner rings, where a first slot is defined between the respective inner ring and the outer ring. A second slot is encompassed by the respective inner ring, and it may be a cutout. The slot ring antenna encompasses eyewear optical assemblies. In one example, the slot antenna first portion encompasses a first optical assembly, and the second portion encompasses the second optical assembly. The outer ring may comprise of a common ground plane, which ground plane may extend proximate a bridge of the eyewear. The two portions of the antenna co-exist in very close proximity to each other and support the same frequency band with minimal coupling to each other due to the orthogonal E-fields.