Transpermanent Magnetics Using Alternating Uniform Linear Stacks

The mission of this chapter is to introduce the reader the recent developments in the design of ultra-Low Power ADCs for Wearable and Implantable Medical Devices (WIMDs). The focus of this chapter will be on Signal-Adaptive Successive Approximation Register (SAR) ADC architectures and their derivatives, since the majority of the ULP medical devices rely on these architectures. The proposed chapter first provides an overview of the WIMDs, and electrophysiological signals. Then, basic SAR ADCs are introduced followed by the study of adaptive SAR ADCs. The chapter concludes with a brief summary of the other prevalent ADC architecture for WIMDs, namely the Level-Crossing ADCs.

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Analysis of Trans-Permanent Magnetic Systems

Journal of Dynamic Systems Measurement and Control ◽

10.1115/1.1543553 ◽

2003 ◽

Vol 125 (1) ◽

pp. 143-146 ◽

Cited By ~ 2

Author(s):

Larry Silverberg ◽

Luis Duval

Keyword(s):

Low Power ◽

Dynamic Systems ◽

Permanent Magnets ◽

Magnetization Process ◽

Governing Equations ◽

Ultra Low Power ◽

Magnetic Systems ◽

Electromechanical Devices

This paper develops a method of switching the states of permanent magnets through an on-board magnetization process. The resulting dynamic systems are referred to as trans-permanent magnetic systems. This paper first describes the governing equations needed for the analysis of trans-permanent magnetic systems. Then, the paper demonstrates their feasibility in an experiment. In doing so, this paper presents a method that has the potential of leading to new ultra-low-power designs for electromechanical devices.

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Design of the Improved Accompanying Temperature Logger

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.989-994.3015 ◽

2014 ◽

Vol 989-994 ◽

pp. 3015-3018

Author(s):

Juan Guo ◽

Shi Ying Liang ◽

Zong Tao Yin

Keyword(s):

Power Consumption ◽

Energy Conservation ◽

Low Power ◽

Communication Protocol ◽

Reducing Power ◽

Experimental Tests ◽

Low Power Consumption ◽

Temperature Logger ◽

Ultra Low Power

This paper describes research on some methods of reducing power consumption to reduce the volume accompanying logger. For the requirement of ultra-low power consumption and miniature, the design is described separately from the hardware and software, mainly including temperature detecting module, interface of communication, low current circuit hardware, energy conservation ,arouse from power down state, communication protocol, etc. The experimental tests for device prove that the research can achieve low power requirements.

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Signal-Adaptive Analog-to-Digital Converters for ULP Wearable and Implantable Medical Devices

Biomedical Engineering ◽

10.4018/978-1-5225-3158-6.ch018 ◽

2018 ◽

pp. 413-443

Author(s):

Nabi Sertac Artan

Keyword(s):

Low Power ◽

Medical Devices ◽

Sar Adc ◽

The Other ◽

Implantable Medical Devices ◽

Ultra Low Power ◽

Analog To Digital ◽

Electrophysiological Signals ◽

Recent Developments ◽

Adc Architectures

The mission of this chapter is to introduce the reader the recent developments in the design of ultra-Low Power ADCs for Wearable and Implantable Medical Devices (WIMDs). The focus of this chapter will be on Signal-Adaptive Successive Approximation Register (SAR) ADC architectures and their derivatives, since the majority of the ULP medical devices rely on these architectures. The proposed chapter first provides an overview of the WIMDs, and electrophysiological signals. Then, basic SAR ADCs are introduced followed by the study of adaptive SAR ADCs. The chapter concludes with a brief summary of the other prevalent ADC architecture for WIMDs, namely the Level-Crossing ADCs.

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Signal-Adaptive Analog-to-Digital Converters for ULP Wearable and Implantable Medical Devices

Wearable Technologies ◽

10.4018/978-1-5225-5484-4.ch012 ◽

2018 ◽

pp. 231-261

Author(s):

Nabi Sertac Artan

Keyword(s):

Low Power ◽

Medical Devices ◽

Sar Adc ◽

The Other ◽

Implantable Medical Devices ◽

Ultra Low Power ◽

Analog To Digital ◽

Electrophysiological Signals ◽

Recent Developments ◽

Adc Architectures

The mission of this chapter is to introduce the reader the recent developments in the design of ultra-Low Power ADCs for Wearable and Implantable Medical Devices (WIMDs). The focus of this chapter will be on Signal-Adaptive Successive Approximation Register (SAR) ADC architectures and their derivatives, since the majority of the ULP medical devices rely on these architectures. The proposed chapter first provides an overview of the WIMDs, and electrophysiological signals. Then, basic SAR ADCs are introduced followed by the study of adaptive SAR ADCs. The chapter concludes with a brief summary of the other prevalent ADC architecture for WIMDs, namely the Level-Crossing ADCs.

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Low-Power pH Sensor Based on Narrow Channel Open-Gated Al0.25Ga0.75N/GaN HEMT and Package Integrated Polydimethylsiloxane Microchannels

Materials ◽

10.3390/ma13225282 ◽

2020 ◽

Vol 13 (22) ◽

pp. 5282

Author(s):

Xianghong Yang ◽

Jiapei Ao ◽

Sichen Wu ◽

Shenhui Ma ◽

Xin Li ◽

...

Keyword(s):

Low Power ◽

Ph Sensor ◽

Reducing Power ◽

High Electron Mobility Transistor ◽

Narrow Channel ◽

Harsh Environments ◽

High Electron ◽

Ultra Low Power ◽

Excellent Stability

pH sensors with low-power and strong anti-interference are extremely important for industrial online real-time detection. Herein, a narrow channel pH sensor based on Al0.25Ga0.75N/GaN high electron mobility transistor (HEMT) with package integrated Polydimethylsiloxane (PDMS) microchannels is proposed. The fabricated device has shown potential advantages in improving stability and reducing power consumption in response to pH changes of the solution. The performance of the pH sensor was demonstrated where the preliminary results showed an ultra-low power (<5.0 μW) at VDS = 1.0 V. Meanwhile, the sensitivity was 0.06 μA/V·pH in the range of pH = 2 to pH = 10, and the resolution of the sensor was 0.1 pH. The improvement in performance of the proposed sensor can be related to the narrow channel and microchannel, which can be attributed to better surface GaxOy in a microchannel with larger H+ and HO− concentration on the sensing surface during the detection process. The low-power sensor with excellent stability can be widely used in various unattended or harsh environments, and it is more conducive to integration and intelligence, which lays the foundation for online monitoring in vivo.

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A 1 to 10-bit, 85.3 fJ/Conv-step ADC for RFID Sensors

Journal of Integrated Circuits and Systems ◽

10.29292/jics.v11i3.442 ◽

2016 ◽

Vol 11 (3) ◽

pp. 177-184

Author(s):

Marcos Zurita ◽

Raimundo C. S. Freire ◽

Smail Tedjini

Keyword(s):

Low Power ◽

Figure Of Merit ◽

Traditional Approach ◽

Cmos Technology ◽

Uhf Rfid ◽

Ultra Low Power ◽

Silicon Area ◽

Analog To Digital ◽

Passive Sensor ◽

Standard Library

This paper presents the design results of an ultra-low power 1 to 10 bit arbitrary resolution switched capacitor analog to digital converter. In addition to using low-power elements, his project also used a library specifically optimized for the proposed converter rather than a standard library as in traditional approach. This approach enabled the overall converter consumption to be reduced by about 70 %. Consuming 7.29 μA at 1 V supply and taking less than 9 μs per conversion (10 bit mode) it can be used in LF, HF or UHF RFID passive sensor tags. The presented converter was designed in 180 nm CMOS technology occupying about 0.052 mm2 of silicon area. A simulation result shows a figure of merit equal to 85.3 fJ/Conversion-step and 9.5 effective number of bits.

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Ultra Low Power Bioelectronics

10.1017/cbo9780511841446 ◽

2009 ◽

Cited By ~ 187

Author(s):

Rahul Sarpeshkar

Keyword(s):

Low Power ◽

Ultra Low Power

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Recent developments in Latvian dialectology

Baltic Linguistics ◽

10.32798/bl.406 ◽

2014 ◽

Vol 5 ◽

pp. 147-177

Author(s):

Anna Daugavet

Keyword(s):

Traditional Approach ◽

Recent Developments ◽

Dialect Geography

Trumpa, Edmunds. 2012. Latviešu ģeolingvistikas etīdes [Studies in Latvian Dialect Geography]. Rīga: Zinātne. ISBN 978–9984–879–34–5.Sarkanis, Alberts. 2013. Latviešu valodas dialektu atlants. Fonētika. Apraksts, kartes un to komentāri [Latvian Dialect Atlas. Phonetics. Description, Maps and Commentaries]. Rīga: LU Latviešu valodas institūts. ISBN: 978–9984–742–68–7 The last year saw the appearance of two significant contributions to the study of Latvian dialects. These are the phonology part of the Latvian Dialect Atlas prepared by Alberts Sarkanis (2013) and Latviešu ģeolingvistikas etīdes by Edmunds (Edmundas) Trumpa (2012a). The two are very different in their aims and methods, even though both deal with phonetic isoglosses of traditional rural dialects. In fact, traditional rural dialects are still considered as the only object of research by Latvian dialectologists in spite of the considerable changes to the field elsewhere, marked by the breakdown of the barriers between dialectology and sociolinguistics (see e.g. Chambers & Trudgill 2004 and Auer & Schmidt 2010). However, of the two reviewed books, Trumpa (2012a) seems to be closer to the modern understanding of research into language and space, and therefore his work can be seen as a promise of changes in Latvian dialectology, whereas Sarkanis (2013) almost entirely belongs to the traditional approach. Nevertheless, in the context of Trumpa’s rather innovative book, Sarkanis’ Phonological Atlas serves as a summary of achievements from the previous stage.

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