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Surface acoustic wave RFID sensor for hemodynamic wearables

A surface acoustic wave and sensor technology, applied in the field of GaN/AlGaN zero-power SAWRFID sensors, can solve the problems of unproven ECG signal detection of lower limbs

Inactive Publication Date: 2019-04-26
EPITRONIC HLDG PTE LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, lower extremity ECG signal detection or remote cardiovascular monitoring based on non-differential skin potential remains unproven and challenging

Method used

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  • Surface acoustic wave RFID sensor for hemodynamic wearables
  • Surface acoustic wave RFID sensor for hemodynamic wearables
  • Surface acoustic wave RFID sensor for hemodynamic wearables

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Embodiment Construction

[0039] In the following description, various aspects of the application will be described. For purposes of explanation, specific configurations and details are set forth in order to provide a thorough understanding of the application. It will be apparent, however, to one skilled in the art that the present application may be practiced without the specific details presented herein. Furthermore, well-known features may be omitted or simplified in order not to obscure the application.

[0040] As used in the claims, the term "comprising" is "open" and means recited elements or equivalents in structure or function, plus any other or non-recited elements. It should not be construed as limited to the components listed hereinafter; other elements or steps are not excluded. It should be interpreted as limiting the presence of the mentioned features, integers, steps or components, but not excluding the presence or addition of one or more other features, integers, steps or components ...

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Abstract

The present application describes embodiments of a radio-frequency identification (RFID) sensor based on a combination of a surface acoustic wave (SAW) transducer and two-dimensional electron gas (2DEG) or two-dimensional hole gas (2DHG) conducting structure, and its use in hemodynamic wearable devices. The SAW RFID sensor chip contains a piezoelectric substrate, on which a multilayer heterojunction structure is deposited. The heterojunction structure comprises at least two layers, a buffer layer and a barrier layer, wherein the layers are grown from III-V single-crystalline or polycrystallinesemi-conductor materials, such as Ga N / Al Ga N. Interdigitated transducers (IDTs) transducing SAWs are installed on top of the barrier layer. A 2DEG or 2DHG conducting channel is formed at the interface between the buffer and barrier layers and provides electron or hole current in the system between the non-ohmic (capacitively-coupled) source and drain contacts connected to the formed channel.

Description

technical field [0001] In general, the present application relates to the field of surface acoustic wave (SAW) based sensors and their use in the detection and continuous monitoring of human generated electric fields. In particular, the application relates to GaN / AlGaN zero power SAW RFID sensors and their use in hemodynamic wearables. Background technique [0002] Personalized mHealth has continued to advance in recent years due to the development of wearable sensors capable of wirelessly providing essential medical information while remaining unobtrusive, fit, low-cost, and easy to operate and interpret. Digital innovations are changing medicine, and hemodynamic monitoring is no exception. In the near future, we can envision a world where clinicians will monitor patients with hemodynamic wearables or implantable sensors that communicate with the diagnostic cloud and integrate with Historical, clinical, biological and physiological information to diagnose and predict adve...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03H9/64A61B5/02H10N30/30H10N39/00
CPCA61B5/02028H03H9/642H03H9/64A61B5/318H10N30/302H10N39/00A61B5/0006A61B5/0205A61B5/02108A61B5/024A61B5/087A61B5/6802A61B5/6816A61B5/6822A61B5/6823A61B5/6824A61B5/6826A61B7/04A61B2562/0204A61B2562/028A61B2562/08H01Q1/2208H03H9/02543H03H9/145
Inventor 阿亚尔·拉姆阿米尔·利希滕斯坦
Owner EPITRONIC HLDG PTE LTD