PMID- 29402953
OWN - NLM
STAT- PubMed-not-MEDLINE
DCOM- 20181106
LR  - 20190205
IS  - 2045-2322 (Electronic)
IS  - 2045-2322 (Linking)
VI  - 8
IP  - 1
DP  - 2018 Feb 5
TI  - Development of chipless, wireless current sensor system based on giant 
      magnetoimpedance magnetic sensor and surface acoustic wave transponder.
PG  - 2401
LID - 10.1038/s41598-018-20867-3 [doi]
LID - 2401
AB  - A chipless, wireless current sensor system was developed using a giant 
      magnetoimpedance (GMI) magnetic sensor and one-port surface acoustic wave (SAW) 
      reflective delay line for real-time power monitoring in a current-carrying 
      conductor. The GMI sensor has a high-quality crystalline structure in each layer, 
      which contributes to a high sensitivity and good linearity in a magnetic field of 
      3-16 Oe. A 400 MHz RF energy generated from the interdigital transducer 
      (IDT)-type reflector on the one-port SAW delay line was used as an activation 
      source for the GMI magnetic sensor. The one-port SAW delay line replaces the 
      presently existing transceiver system, which is composed of thousands of 
      transistors, thus enabling chipless and wireless operation. We confirmed a large 
      variation in the amplitude of the SAW reflection peak with a change in the 
      impedance of the GMI sensor caused by the current flow through the conductor. 
      Good linearity and sensitivity of ~0.691 dB/A were observed for currents in the 
      range 1-12 A. Coupling of Mode (COM) modeling and impedance matching analysis 
      were also performed to predict the device performance in advance and these were 
      compared with the experimental results.
FAU - Kondalkar, Vijay V
AU  - Kondalkar VV
AD  - Department of Electrical and Computer Engineering, Ajou University, 
      Woncheon-dong, Yeongtong-gu, Suwon, 443-749, Republic of Korea.
FAU - Li, Xiang
AU  - Li X
AD  - Department of Electrical and Computer Engineering, Ajou University, 
      Woncheon-dong, Yeongtong-gu, Suwon, 443-749, Republic of Korea.
FAU - Park, Ikmo
AU  - Park I
AUID- ORCID: 0000-0002-0051-8614
AD  - Department of Electrical and Computer Engineering, Ajou University, 
      Woncheon-dong, Yeongtong-gu, Suwon, 443-749, Republic of Korea.
FAU - Yang, Sang Sik
AU  - Yang SS
AD  - Department of Electrical and Computer Engineering, Ajou University, 
      Woncheon-dong, Yeongtong-gu, Suwon, 443-749, Republic of Korea.
FAU - Lee, Keekeun
AU  - Lee K
AD  - Department of Electrical and Computer Engineering, Ajou University, 
      Woncheon-dong, Yeongtong-gu, Suwon, 443-749, Republic of Korea. 
      keekeun@ajou.ac.kr.
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
DEP - 20180205
PL  - England
TA  - Sci Rep
JT  - Scientific reports
JID - 101563288
PMC - PMC5799300
COIS- The authors declare that they have no competing interests.
EDAT- 2018/02/07 06:00
MHDA- 2018/02/07 06:01
PMCR- 2018/02/05
CRDT- 2018/02/07 06:00
PHST- 2017/08/08 00:00 [received]
PHST- 2018/01/24 00:00 [accepted]
PHST- 2018/02/07 06:00 [entrez]
PHST- 2018/02/07 06:00 [pubmed]
PHST- 2018/02/07 06:01 [medline]
PHST- 2018/02/05 00:00 [pmc-release]
AID - 10.1038/s41598-018-20867-3 [pii]
AID - 20867 [pii]
AID - 10.1038/s41598-018-20867-3 [doi]
PST - epublish
SO  - Sci Rep. 2018 Feb 5;8(1):2401. doi: 10.1038/s41598-018-20867-3.