Title :
Linear magnetic sensor based on off-diagonal magnetic impedance in amorphous wires
Author :
Sandacci, S. ; Makhnovskil, D.P. ; Panina, L.V. ; Akhter, M.A. ; Memon, Z.A.
Author_Institution :
Dept. of Commun. & Electr. Eng., Univ. of Plymouth, UK
Abstract :
This paper concerns the principles of operation of a linear magnetic sensor utilising off-diagonal impedance in Co-rich amorphous magnetic wire incorporated into CMOS transistor circuit. Short pulse current train produced by the circuit drives the wire. This excitation signal combining both high and low frequency harmonics produces a linear off-diagonal voltage response without additional bias current or field. This suits ideal for a practical linear sensor circuit design.
Keywords :
amorphous magnetic materials; boron alloys; cobalt alloys; ferromagnetic materials; iron alloys; magnetic sensors; silicon alloys; soft magnetic materials; surface impedance; CMOS transistor circuit; CoFeSiB; amorphous magnetic wire; high frequency harmonics; linear magnetic sensor; low frequency harmonics; off-diagonal magnetic impedance; off-diagonal voltage response; sensor circuit design; short pulse current train; surface impedance tensor; Amorphous magnetic materials; Amorphous materials; Circuit synthesis; Frequency; Impedance; Magnetic circuits; Magnetic sensors; Pulse circuits; Voltage; Wire;
Conference_Titel :
Electronics, Circuits and Systems, 2003. ICECS 2003. Proceedings of the 2003 10th IEEE International Conference on
Print_ISBN :
0-7803-8163-7
DOI :
10.1109/ICECS.2003.1301728
