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A CMOS Humidity Sensor for Passive RFID Sensing Applications
This paper presents a low-cost low-power CMOS humidity sensor for passive RFID sensing applications. The humidity sensing element is implemented in standard CMOS technology without any further post-processing, which results in low fabrication costs. The interface of this humidity sensor employs a PL...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Molecular Diversity Preservation International (MDPI)
2014
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4063045/ https://www.ncbi.nlm.nih.gov/pubmed/24841250 http://dx.doi.org/10.3390/s140508728 |
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author | Deng, Fangming He, Yigang Zhang, Chaolong Feng, Wei |
author_facet | Deng, Fangming He, Yigang Zhang, Chaolong Feng, Wei |
author_sort | Deng, Fangming |
collection | PubMed |
description | This paper presents a low-cost low-power CMOS humidity sensor for passive RFID sensing applications. The humidity sensing element is implemented in standard CMOS technology without any further post-processing, which results in low fabrication costs. The interface of this humidity sensor employs a PLL-based architecture transferring sensor signal processing from the voltage domain to the frequency domain. Therefore this architecture allows the use of a fully digital circuit, which can operate on ultra-low supply voltage and thus achieves low-power consumption. The proposed humidity sensor has been fabricated in the TSMC 0.18 μm CMOS process. The measurements show this humidity sensor exhibits excellent linearity and stability within the relative humidity range. The sensor interface circuit consumes only 1.05 μW at 0.5 V supply voltage and reduces it at least by an order of magnitude compared to previous designs. |
format | Online Article Text |
id | pubmed-4063045 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2014 |
publisher | Molecular Diversity Preservation International (MDPI) |
record_format | MEDLINE/PubMed |
spelling | pubmed-40630452014-06-19 A CMOS Humidity Sensor for Passive RFID Sensing Applications Deng, Fangming He, Yigang Zhang, Chaolong Feng, Wei Sensors (Basel) Article This paper presents a low-cost low-power CMOS humidity sensor for passive RFID sensing applications. The humidity sensing element is implemented in standard CMOS technology without any further post-processing, which results in low fabrication costs. The interface of this humidity sensor employs a PLL-based architecture transferring sensor signal processing from the voltage domain to the frequency domain. Therefore this architecture allows the use of a fully digital circuit, which can operate on ultra-low supply voltage and thus achieves low-power consumption. The proposed humidity sensor has been fabricated in the TSMC 0.18 μm CMOS process. The measurements show this humidity sensor exhibits excellent linearity and stability within the relative humidity range. The sensor interface circuit consumes only 1.05 μW at 0.5 V supply voltage and reduces it at least by an order of magnitude compared to previous designs. Molecular Diversity Preservation International (MDPI) 2014-05-16 /pmc/articles/PMC4063045/ /pubmed/24841250 http://dx.doi.org/10.3390/s140508728 Text en © 2014 by the authors; licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/3.0/). |
spellingShingle | Article Deng, Fangming He, Yigang Zhang, Chaolong Feng, Wei A CMOS Humidity Sensor for Passive RFID Sensing Applications |
title | A CMOS Humidity Sensor for Passive RFID Sensing Applications |
title_full | A CMOS Humidity Sensor for Passive RFID Sensing Applications |
title_fullStr | A CMOS Humidity Sensor for Passive RFID Sensing Applications |
title_full_unstemmed | A CMOS Humidity Sensor for Passive RFID Sensing Applications |
title_short | A CMOS Humidity Sensor for Passive RFID Sensing Applications |
title_sort | cmos humidity sensor for passive rfid sensing applications |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4063045/ https://www.ncbi.nlm.nih.gov/pubmed/24841250 http://dx.doi.org/10.3390/s140508728 |
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