2011 IEEE 54th International Midwest Symposium on Circuits and Systems (MWSCAS) 2011
DOI: 10.1109/mwscas.2011.6026504
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Low power voltage limiter design for a full passive UHF RFID sensor

Abstract: This paper presents a low power voltage limiter design that avoids possible damages in the circuits of the analog front-end of the RFID sensor due to voltage surges whenever reader and tag are very close. The proposed voltage limiter design takes advantage of the implemented bandgap reference and voltage regulator in order to provide low temperature and process deviation of the limiting voltage. The measured limiting voltage is 2.9V with a voltage variation of only +/-O.025V for the four measured dies. The cur… Show more

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Cited by 10 publications
(3 citation statements)
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“…Due to the dependence on the distance between the reader and the tag, voltage limiter circuits must be used to prevent any damage to the tag being read. Examples of limiter architectures with such a purpose are presented in [35,36].…”
Section: Radio Frequency Electromagnetic Energymentioning
confidence: 99%
“…Due to the dependence on the distance between the reader and the tag, voltage limiter circuits must be used to prevent any damage to the tag being read. Examples of limiter architectures with such a purpose are presented in [35,36].…”
Section: Radio Frequency Electromagnetic Energymentioning
confidence: 99%
“…In [3], the voltage limitation is achieved by opening a switch to a capacitor, whenever its voltage exceeds a certain limit, on a sample-and-hold basis. There are other systems that also use voltage limiter circuits, like in [4] and [5], where the voltage limitation problem appears under the context of RFID applications. The amount of available power to a RFID tag is dependent upon the distance to the reader device, resulting in a similar problem to the one in a light energy harvesting system.…”
Section: Motivation and Backgroundmentioning
confidence: 99%
“…In [4], the voltage limitation is done by performing a comparison to a desired limit. In [5], a band gap reference circuit is used to generate a reference voltage to which the desired voltage is compared to. This approach is similar to the one proposed in this paper.…”
Section: Motivation and Backgroundmentioning
confidence: 99%