2005 PhD Research in Microelectronics and Electronics, Vols 1 and 2, Proceedings
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2005年
关键词:
D O I:
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中图分类号:
TM [电工技术];
TN [电子技术、通信技术];
学科分类号:
0808 ;
0809 ;
摘要:
In this paper, we present a new planar fluxgate magnetometer structure. The sensor has the orthogonal fluxgate configuration which makes the detection part independent of the excitation mechanism. The sensor consists of a ferromagnetic cylindrical core covering an excitation rod, and planar coils for signal detection. The fabricated sensor has a linear range of +/- 250 mu T, a sensitivity of 4.3 mV/mT, and a perming below 400 nT for 200 mA peak sinusoidal excitation current at 100 kHz. The effect of demagnetization on the sensitivity, linear range, and penning for this structure is demonstrated by varying the length of the ferromagnetic core.
机构:
Fed Univ Fronteira Sul, Dept Phys, 1000 Edmundo Gaievski St, BR-85770000 Realeza, PR, BrazilFed Univ Fronteira Sul, Dept Phys, 1000 Edmundo Gaievski St, BR-85770000 Realeza, PR, Brazil
Heimfarth, Tobias
Mulato, Marcelo
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机构:
Univ Sao Paulo, Fac Philosophy Sci & Letters Ribeirao Preto, Dept Phys, Av Bandeirantes 3900, BR-14040901 Ribeirao Preto, SP, BrazilFed Univ Fronteira Sul, Dept Phys, 1000 Edmundo Gaievski St, BR-85770000 Realeza, PR, Brazil