Dual-Purpose Tracker Tag Antennas for BT and UWB in Limited Space
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Solution Overview
Problem
Conventional tracker tags face challenges in designing efficient antennas for both Bluetooth and Ultra-Wideband communication due to their small size, which limits their performance and efficiency, as they require dedicated space and often result in separate antennas for each frequency range.
Innovation Solution
The tracker tag incorporates dual-purpose components, such as the piezoelectric device's conductive plates and the housing covers, to function as both antennas and other functional elements, allowing for RF circuitry to operate within both Bluetooth and Ultra-Wideband frequency ranges without dedicated antenna structures, utilizing a UWB switch and diplexer for efficient signal processing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate dedicated antennas are used for Bluetooth and Ultra-Wideband communication, then communication performance is improved, but device volume and complexity increase
Solution Approach 1:
The patent implements multi-functionality by making the housing covers serve dual purposes: as structural protective elements and as radiating elements for both Bluetooth and Ultra-Wideband antennas. The first housing cover functions as a Bluetooth antenna, while the second housing cover serves as an Ultra-Wideband antenna, eliminating the need for separate dedicated antenna structures and reducing overall device volume.
Solution Approach 2:
The patent merges previously separate functions into unified components. The housing covers that originally served only as protective enclosures are now combined with antenna functionality. This merging of structural and communication functions allows the tracker tag to maintain compact dimensions while supporting multiple wireless communication protocols.
2Volume of moving object
If smaller antenna volume is used to maintain compact device size, then device portability is improved, but antenna efficiency and performance deteriorate
Solution Approach 1:
The housing covers are designed to perform multiple functions simultaneously: providing structural protection, enabling wireless communication across different frequency ranges, and serving as the radiating elements for both Bluetooth and Ultra-Wideband antennas. This multi-functionality allows efficient antenna performance within the constrained volume of a compact tracker tag.
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 approach enables a compact tracker tag with improved antenna performance, allowing for accurate location tracking over long distances and precise pinpointing, while maintaining a small form factor and reduced power consumption.
Implementation Method 1
The RF circuitry may be configured to utilize at least one of the front cover, the back cover, the first conductive plate, and the second conductive plate as one or more antennas
Implementation Method 2
A piezoelectric device having a first conductive plate and a second conductive plate
Data Source
Figure 1~2
Figure 3
Figure 4A~4B
AI summary
Tracker tags, smart tags, locator tags, and the like are provided. A portable tracker tag (40) includes a housing having a front cover (42) and a back cover (44); Radio Frequency (RF) circuitry (48) configured to operate within at least one of a Bluetooth (BT) frequency range and an Ultra-Wideband (UWB) frequency range; and a piezoelectric device (88) having a first conductive plate (90) and a second conductive plate (92); wherein the RF circuitry (48) utilizes at least one of the front cover (42), the back cover (44), the first conductive plate (90), and the second conductive plate (92) as one or more antennas.