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1. (WO2017036352) HALF TURNING-OVER DUAL-AXIS MAGNETORESISTIVE SENSOR

Pub. No.:    WO/2017/036352    International Application No.:    PCT/CN2016/096830
Publication Date: Fri Mar 10 00:59:59 CET 2017 International Filing Date: Sat Aug 27 01:59:59 CEST 2016
IPC: G01R 33/09
Applicants: MULTIDIMENSION TECHNOLOGY CO., LTD.
江苏多维科技有限公司
Inventors: DEAK, James Geza
迪克詹姆斯·G
ZHOU, Zhimin
周志敏
Title: HALF TURNING-OVER DUAL-AXIS MAGNETORESISTIVE SENSOR
Abstract:
A half turning-over dual-axis magnetoresistive sensor (1, 5), comprising at least one set of slices (2, 2(1), 6, 6(1), 20, 20(1), 60, 60(1), 91, 92) arranged in an X-Y plane. Each set of slices comprises two slices, wherein the two slices are arranged in a 180-degree out-of-phase relationship in the X-Y plane. Each slice comprises two sets of magnetoresistive sensing unit strings (3, 4, 7, 8) having orthogonal magnetization directions of a ferromagnetic reference layer (13). Each of the magnetoresistive sensing unit strings (3, 4, 7, 8) is comprised of at least two magnetoresistive sensing units (31, 32, 41, 42, 71, 72, 81, 82, 21-24, 61-64). Also, the magnetoresistive sensing unit strings (3, 4, 7, 8) on the two slices are in electrical connection so as to form at least two single-axis push-pull type magnetoresistive sensing unit bridges having orthogonal magnetic field sensitive directions. Each of the push-pull type magnetoresistive sensing unit bridges comprises magnetoresistive sensing unit strings (3, 4, 7, 8) having opposite magnetization directions of the ferromagnetic reference layer (13) respectively arranged on two slices. The dual-axis magnetoresistive sensing unit bridges can be either linear magnetoresistive sensors or angular magnetoresistive sensors. The sensor of the present invention has the advantages of small number of slices, easy mounting position, simple structure and low power consumption.