The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 15, 2005
Filed:
Jan. 31, 2003
Yasunori Miyazawa, Sendai, JP;
Katsuji Kaminishi, Sendai, JP;
Masahiro Yamaguchi, Sendai, JP;
Kenichi Arai, Shiogama, JP;
Yasunori Miyazawa, Sendai, JP;
Katsuji Kaminishi, Sendai, JP;
Masahiro Yamaguchi, Sendai, JP;
Kenichi Arai, Shiogama, JP;
Ryowa Electronics Co., Ltd., Miyagi-ken, JP;
Abstract
A magnetic sensor has a monotonic response to high-frequency magnetic strengths in a frequency range up to superhigh frequencies. The magnetic sensor includes a shielded loop coil having a triplate stripline structure. The shielded loop coil has one-turn looped ground patterns formed respectively in a first layer and a fifth layer and connected parallel to each other by a via, and has an inductance L. The one-turn looped ground patterns have end electrodes facing each other across gaps, one of the end electrodes including the via, providing a combined capacitor operable at high frequencies and having a capacitance C. The product L×C of the inductance L and the capacitance C is 2.5×10or less and the maximum outer circumference length of the one-turn looped ground lines is 50 [mm] or less.