Magnetic sensor based on surface acoustic wave resonators

Michio Kadota; Shigeo Ito; Yoshihiro Ito; Takuo Hada; Kenjiro Okaguchi

doi:10.1143/JJAP.50.07HD07

Magnetic sensor based on surface acoustic wave resonators

Michio Kadota, Shigeo Ito, Yoshihiro Ito, Takuo Hada, Kenjiro Okaguchi

ENG - Robotics

Research output: Contribution to journal › Article › peer-review

24 Citations (Scopus)

Abstract

In this paper, we describe a new type of magnetic surface acoustic wave (SAW) sensor that consists of interdigital transducers made of a magnetostrictive material, Ni, on a quartz substrate. This sensor can be used as an element of a resonator-type wireless SAW sensor system because it has a high Q. Moreover, it has the merits of being fabricated easily using the existing process for SAW devices because its structure is the same as that of general SAW resonators. When an external magnetic field of about 100 mT was applied perpendicularly to the direction of SAW propagation, the frequency change obtained was 200 ppm. In addition, the developed sensor was applied in a passive and wireless open/close sensing system and the reading distance obtained was 3m.

Original language	English
Article number	07HD07
Journal	Japanese journal of applied physics
Volume	50
Issue number	7 PART 2
DOIs	https://doi.org/10.1143/JJAP.50.07HD07
Publication status	Published - 2011 Jul 1

ASJC Scopus subject areas

Engineering(all)
Physics and Astronomy(all)

Access to Document

10.1143/JJAP.50.07HD07

Fingerprint Dive into the research topics of 'Magnetic sensor based on surface acoustic wave resonators'. Together they form a unique fingerprint.

Cite this

@article{76c492c6c16a4195bbe4e3152abbba72,

title = "Magnetic sensor based on surface acoustic wave resonators",

abstract = "In this paper, we describe a new type of magnetic surface acoustic wave (SAW) sensor that consists of interdigital transducers made of a magnetostrictive material, Ni, on a quartz substrate. This sensor can be used as an element of a resonator-type wireless SAW sensor system because it has a high Q. Moreover, it has the merits of being fabricated easily using the existing process for SAW devices because its structure is the same as that of general SAW resonators. When an external magnetic field of about 100 mT was applied perpendicularly to the direction of SAW propagation, the frequency change obtained was 200 ppm. In addition, the developed sensor was applied in a passive and wireless open/close sensing system and the reading distance obtained was 3m.",

author = "Michio Kadota and Shigeo Ito and Yoshihiro Ito and Takuo Hada and Kenjiro Okaguchi",

year = "2011",

month = jul,

day = "1",

doi = "10.1143/JJAP.50.07HD07",

language = "English",

volume = "50",

journal = "Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes",

issn = "0021-4922",

publisher = "Japan Society of Applied Physics",

number = "7 PART 2",

}

TY - JOUR

T1 - Magnetic sensor based on surface acoustic wave resonators

AU - Kadota, Michio

AU - Ito, Shigeo

AU - Ito, Yoshihiro

AU - Hada, Takuo

AU - Okaguchi, Kenjiro

PY - 2011/7/1

Y1 - 2011/7/1

N2 - In this paper, we describe a new type of magnetic surface acoustic wave (SAW) sensor that consists of interdigital transducers made of a magnetostrictive material, Ni, on a quartz substrate. This sensor can be used as an element of a resonator-type wireless SAW sensor system because it has a high Q. Moreover, it has the merits of being fabricated easily using the existing process for SAW devices because its structure is the same as that of general SAW resonators. When an external magnetic field of about 100 mT was applied perpendicularly to the direction of SAW propagation, the frequency change obtained was 200 ppm. In addition, the developed sensor was applied in a passive and wireless open/close sensing system and the reading distance obtained was 3m.

AB - In this paper, we describe a new type of magnetic surface acoustic wave (SAW) sensor that consists of interdigital transducers made of a magnetostrictive material, Ni, on a quartz substrate. This sensor can be used as an element of a resonator-type wireless SAW sensor system because it has a high Q. Moreover, it has the merits of being fabricated easily using the existing process for SAW devices because its structure is the same as that of general SAW resonators. When an external magnetic field of about 100 mT was applied perpendicularly to the direction of SAW propagation, the frequency change obtained was 200 ppm. In addition, the developed sensor was applied in a passive and wireless open/close sensing system and the reading distance obtained was 3m.

UR - http://www.scopus.com/inward/record.url?scp=79960612374&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=79960612374&partnerID=8YFLogxK

U2 - 10.1143/JJAP.50.07HD07

DO - 10.1143/JJAP.50.07HD07

M3 - Article

AN - SCOPUS:79960612374

VL - 50

JO - Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes

JF - Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes

SN - 0021-4922

IS - 7 PART 2

M1 - 07HD07

ER -