Multi-Axial Ferrite Core Antenna for RF Tag Detection
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Solution Overview
Problem
Conventional antenna systems for RF tag systems face challenges in achieving multi-axial signal detection and transmission due to limited space and inflexible, aesthetically invasive installations, which are costly and inefficient, especially when RF tags can assume arbitrary orientations.
Innovation Solution
A multi-axial ferrite core antenna system with primary and secondary coils oriented at angles to each other, allowing for improved signal detection and transmission across multiple axes, integrated into a compact and aesthetically pleasing design that can be installed in various locations such as walls, floors, or ceilings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple individual antennas are used to achieve multi-axial reception, then signal detection capability is improved, but device complexity and installation cost increase
Solution Approach 1:
The patent combines multiple single-axis antennas into a single multi-axial antenna structure with ferrite core coils oriented at different angles. This merging approach achieves multi-axial reception capability while reducing the number of separate antenna units from multiple individual antennas to one integrated structure, thereby reducing device complexity and installation requirements.
Solution Approach 2:
The multi-axial antenna is designed to perform multiple functions simultaneously - it can receive signals from RF tags in various orientations along multiple axes (x-axis, y-axis, z-axis) using a single antenna structure. This multi-functionality eliminates the need for separate single-axis antennas for different orientations, reducing overall system complexity.
2Reliability
If multiple individual antennas are installed to achieve multi-axial coverage, then signal reception is improved, but installation flexibility and aesthetic appearance deteriorate
Solution Approach 1:
By merging multiple antenna functions into a single multi-axial antenna unit, the installation process is simplified from installing multiple separate antennas to installing one integrated unit. This improves installation flexibility and allows for more aesthetically pleasing installations while maintaining the ability to receive signals from multiple axes.
3Reliability
If multiple individual antennas are deployed for multi-axial coverage, then detection capability is improved, but implementation cost and limitations increase
Solution Approach 1:
The patent integrates multiple antenna elements into a single manufactured unit with shared ferrite core coils and circuit board components. This merging reduces the total number of parts that need to be manufactured, stored, and installed, thereby reducing implementation costs and simplifying the supply chain while maintaining multi-axial detection capability.
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 system enhances the probability of receiving signals from RF tags, estimates their location and orientation, and provides cost-effective, flexible, and aesthetically acceptable multi-axial coverage, enabling efficient tracking and security measures in environments like infant/patient monitoring and security systems.
Implementation Method 1
The antenna system includes a plurality of ferrite core coils. Each of the ferrite core coils has a longitudinal axis disposed at an angle with respect to each other.
Implementation Method 2
multi-axial ferrite core antenna system
Implementation Method 3
simultaneously-resonant antenna or a stand-alone resonators to achieve the multi-axial coverage
Data Source
AI summary
An antenna system for use with very low frequency or low frequency RF tags include a plurality of ferrite core coils disposed at an angle with respect to each other. The antenna system further includes a secondary coil disposed around at least one of the primary coils. The antenna system can provide a multi-axis antenna including two, three, or more than three antenna elements. The antenna system can be disposed in a gang box for a less aesthetically intrusive installation.