Optimization of wireless sensors based on intermodulation communication

Jinsong Song, V. Viikari, Nadine Pesonen, Ilkka Marttila, Heikki Seppä

Research output: Contribution to journalArticleScientificpeer-review

23 Citations (Scopus)

Abstract

Intermodulation communication principle has been recently developed to wirelessly read-out passive sensors. Intermodulation communication sensors reply the sensor information at an intermodulation frequency when interrogated by a reader device with two tones. This paper derives an analytical expression for optimizing the electrical circuitry of such a sensor. The derived equations are verified by harmonic balance simulations. An optimized sensor is designed and fabricated and experimentally characterized. Results show that 1% change in the sensor capacitance can still be detected at a 13 m-distance and the read-out principle could enable an extreme resolution at shorter distances (less than per mille below 5 m). A wireless electrocardiography measurement is demonstrated.
Original languageEnglish
Pages (from-to)3446-3452
Number of pages6
JournalIEEE Transactions on Microwave Theory and Techniques
Volume61
Issue number9
DOIs
Publication statusPublished - 2013
MoE publication typeA1 Journal article-refereed

Fingerprint

Intermodulation
intermodulation
communication
optimization
sensors
Communication
Sensors
electrocardiography
readers
Electrocardiography
Capacitance
capacitance
harmonics
simulation

Keywords

  • intermodulation
  • mixers
  • RF identification (RFID)
  • wireless sensors

Cite this

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title = "Optimization of wireless sensors based on intermodulation communication",
abstract = "Intermodulation communication principle has been recently developed to wirelessly read-out passive sensors. Intermodulation communication sensors reply the sensor information at an intermodulation frequency when interrogated by a reader device with two tones. This paper derives an analytical expression for optimizing the electrical circuitry of such a sensor. The derived equations are verified by harmonic balance simulations. An optimized sensor is designed and fabricated and experimentally characterized. Results show that 1{\%} change in the sensor capacitance can still be detected at a 13 m-distance and the read-out principle could enable an extreme resolution at shorter distances (less than per mille below 5 m). A wireless electrocardiography measurement is demonstrated.",
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Optimization of wireless sensors based on intermodulation communication. / Song, Jinsong; Viikari, V.; Pesonen, Nadine; Marttila, Ilkka; Seppä, Heikki.

In: IEEE Transactions on Microwave Theory and Techniques, Vol. 61, No. 9, 2013, p. 3446-3452.

Research output: Contribution to journalArticleScientificpeer-review

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AU - Song, Jinsong

AU - Viikari, V.

AU - Pesonen, Nadine

AU - Marttila, Ilkka

AU - Seppä, Heikki

PY - 2013

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AB - Intermodulation communication principle has been recently developed to wirelessly read-out passive sensors. Intermodulation communication sensors reply the sensor information at an intermodulation frequency when interrogated by a reader device with two tones. This paper derives an analytical expression for optimizing the electrical circuitry of such a sensor. The derived equations are verified by harmonic balance simulations. An optimized sensor is designed and fabricated and experimentally characterized. Results show that 1% change in the sensor capacitance can still be detected at a 13 m-distance and the read-out principle could enable an extreme resolution at shorter distances (less than per mille below 5 m). A wireless electrocardiography measurement is demonstrated.

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KW - mixers

KW - RF identification (RFID)

KW - wireless sensors

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