Dual-Side Ring Antenna Switching for Orientation-Aware RF Links
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Solution Overview
Problem
Existing wearable devices, particularly ring-type devices, face challenges in efficiently determining orientation and optimizing antenna performance due to limitations in antenna design and environmental interference, leading to reduced data transmission speed and increased power consumption.
Innovation Solution
A ring device with dual antenna patterns on its side surfaces, coupled with sensors and processors, allows for adaptive orientation determination and selective antenna use based on the device's orientation, enhancing RF signal transmission and reception efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If a single antenna pattern is used in ring devices, then the device structure remains simple, but radiation efficiency decreases due to environmental interference and orientation limitations
Solution Approach 1:
The antenna system is divided into multiple independent antenna patterns (first antenna pattern and second antenna pattern) positioned at different locations on the ring device. Each antenna pattern can be independently controlled and activated based on the device's orientation and environmental conditions, allowing the system to segment the radiation function across multiple elements to maintain high radiation efficiency regardless of orientation.
Solution Approach 2:
The antenna system implements dynamic switching between different antenna patterns based on real-time orientation detection from sensor data. The processor determines which antenna pattern should be activated based on the device's current orientation, creating a dynamic adaptation mechanism that optimizes radiation efficiency as the device moves and changes position.
2Speed
If antenna patterns are fixed without orientation detection, then device complexity remains low, but data transmission speed decreases due to suboptimal antenna orientation
Solution Approach 1:
The system employs sensor modules to continuously monitor the device's orientation and provides feedback to the processor. Based on this feedback, the processor dynamically determines which antenna pattern should be activated to optimize transmission performance. This closed-loop feedback mechanism ensures that the antenna system continuously adapts to maintain optimal data transmission speed.
Solution Approach 2:
Multiple antenna patterns are pre-configured at different orientations on the ring device before operation. When the device is manufactured, various antenna patterns are already positioned to cover different spatial directions, allowing the system to quickly switch to the appropriate pre-configured antenna based on detected orientation, rather than having to calculate or adjust antenna positions in real-time.
3Loss of energy
If the device does not determine orientation dynamically, then power consumption remains low, but radiation efficiency decreases due to inability to optimize antenna selection
Solution Approach 1:
The orientation determination and antenna switching operates periodically rather than continuously. The sensor module samples orientation data at specific intervals, and the processor updates antenna selection based on these periodic measurements. This periodic operation reduces power consumption compared to continuous monitoring while still maintaining adequate radiation efficiency by updating antenna selection at sufficient intervals.
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 solution improves radiation efficiency and reduces power consumption by dynamically adjusting antenna patterns to optimize performance based on the device's orientation, thereby enhancing data transmission speed and connectivity.
Implementation Method 1
transmit and/or receive a radio frequency (RF) signal using any one of the first antenna pattern and the second antenna pattern
Data Source
Figure 1
Figure 2A
Figure 2B
AI summary
A ring device according to the present invention includes: a printed circuit board including an upper surface, a lower surface opposite to the upper surface, and a side surface extending from an edge of the upper surface to an edge of the lower surface; a first antenna pattern formed on a first part of the side surface; a second antenna pattern formed on a second part opposite to the first part of the side surface; at least one sensor disposed on the printed circuit board; and at least one processor operatively coupled to the first antenna pattern, the second antenna pattern, and the at least one sensor and including a processing circuit. The at least one processor individually and/or collectively determines the orientation of the ring device using the at least one sensor, and controls the ring device on the basis of the determined orientation to transmit and/or receive radio frequency (RF) signals using one of the first antenna pattern or the second antenna pattern. Various other embodiments are possible.