TY - JOUR
T1 - Phase Detection of High-Frequency Carrier-Type Thin-Film Sensor
AU - Yabukami, S.
AU - Mawatari, H.
AU - Shimoe, O.
AU - Arai, K. I.
N1 - Funding Information:
Manuscript received January 14, 2003. This work was supported in part by the Japan Society for the Promotion of Science (JSPS) (14350214). S. Yabukami, H. Mawatari, and K.-I. Arai are with the Research Institute of Electrical Communication, Tohoku University, Sendai 980-8577, Japan (e-mail: yab@riec.tohoku.ac.jp; mawatari@riec.tohoku.ac.jp; arai@riec.tohoku.ac.jp). O. Shimoe is with Hitachi Metals, Kumagaya 360-0843, Japan (e-mail: osamu_shimoe@hitachi-metals.co.jp). Digital Object Identifier 10.1109/TMAG.2003.816056
PY - 2003/9
Y1 - 2003/9
N2 - We propose, herein, a method by which to measure the phase of the carrier in a high-frequency carrier-type sensor (giant magneto impedance sensor). The proposed method is based on a carrier suppression technique. The phase of the carrier signal changed dramatically by approximately 180° around the carrier suppression when a small dc field was applied. The phase sensitivity for a small dc field reached 3600°/Oe. In addition, in the present study, we investigate the relationship between phase sensitivity and suppressed carrier level in the suppression circuit, the measured data nearly corresponded to theoretical data.
AB - We propose, herein, a method by which to measure the phase of the carrier in a high-frequency carrier-type sensor (giant magneto impedance sensor). The proposed method is based on a carrier suppression technique. The phase of the carrier signal changed dramatically by approximately 180° around the carrier suppression when a small dc field was applied. The phase sensitivity for a small dc field reached 3600°/Oe. In addition, in the present study, we investigate the relationship between phase sensitivity and suppressed carrier level in the suppression circuit, the measured data nearly corresponded to theoretical data.
KW - Carrier suppression technique
KW - Giant magneto impedance (GMI)
KW - High-frequency carrier-type sensor
KW - Phase detection
KW - Thin film
UR - http://www.scopus.com/inward/record.url?scp=0141952965&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0141952965&partnerID=8YFLogxK
U2 - 10.1109/TMAG.2003.816056
DO - 10.1109/TMAG.2003.816056
M3 - Article
AN - SCOPUS:0141952965
SN - 0018-9464
VL - 39
SP - 3196
EP - 3198
JO - IEEE Transactions on Magnetics
JF - IEEE Transactions on Magnetics
IS - 5 II
ER -