Intermodulation read-out principle for passive wireless sensors

Ville Viikari, Heikki Seppä, Kim Dong-Wook

Research output: Contribution to journalArticleScientificpeer-review

24 Citations (Scopus)

Abstract

This paper presents a general intermodulation read-out principle for passive wireless sensors. A sensor utilizes a mixing element, such as a varactor, and it can be equipped with a capacitive, inductive, or resistive sensor element. When the sensor is illuminated with signals with two frequencies, it replies the sensor data at an intermodulation frequency. An analytical expression for the intermodulation response of the sensor is derived and verified by simulations. The concept is demonstrated at 1.2 GHz.
Original languageEnglish
Pages (from-to)1025-1031
Number of pages7
JournalIEEE Transactions on Microwave Theory and Techniques
Volume59
Issue number4
DOIs
Publication statusPublished - 2011
MoE publication typeA1 Journal article-refereed

Fingerprint

Intermodulation
intermodulation
sensors
Sensors
varactor diodes
Varactors
simulation

Keywords

  • Mixers
  • RF identification (RFID)
  • wireless sensors

Cite this

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title = "Intermodulation read-out principle for passive wireless sensors",
abstract = "This paper presents a general intermodulation read-out principle for passive wireless sensors. A sensor utilizes a mixing element, such as a varactor, and it can be equipped with a capacitive, inductive, or resistive sensor element. When the sensor is illuminated with signals with two frequencies, it replies the sensor data at an intermodulation frequency. An analytical expression for the intermodulation response of the sensor is derived and verified by simulations. The concept is demonstrated at 1.2 GHz.",
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Intermodulation read-out principle for passive wireless sensors. / Viikari, Ville; Seppä, Heikki; Dong-Wook, Kim.

In: IEEE Transactions on Microwave Theory and Techniques, Vol. 59, No. 4, 2011, p. 1025-1031.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Intermodulation read-out principle for passive wireless sensors

AU - Viikari, Ville

AU - Seppä, Heikki

AU - Dong-Wook, Kim

PY - 2011

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N2 - This paper presents a general intermodulation read-out principle for passive wireless sensors. A sensor utilizes a mixing element, such as a varactor, and it can be equipped with a capacitive, inductive, or resistive sensor element. When the sensor is illuminated with signals with two frequencies, it replies the sensor data at an intermodulation frequency. An analytical expression for the intermodulation response of the sensor is derived and verified by simulations. The concept is demonstrated at 1.2 GHz.

AB - This paper presents a general intermodulation read-out principle for passive wireless sensors. A sensor utilizes a mixing element, such as a varactor, and it can be equipped with a capacitive, inductive, or resistive sensor element. When the sensor is illuminated with signals with two frequencies, it replies the sensor data at an intermodulation frequency. An analytical expression for the intermodulation response of the sensor is derived and verified by simulations. The concept is demonstrated at 1.2 GHz.

KW - Mixers

KW - RF identification (RFID)

KW - wireless sensors

U2 - 10.1109/TMTT.2011.2108309

DO - 10.1109/TMTT.2011.2108309

M3 - Article

VL - 59

SP - 1025

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JO - IEEE Transactions on Microwave Theory and Techniques

JF - IEEE Transactions on Microwave Theory and Techniques

SN - 0018-9480

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ER -