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:
Jun. 05, 2012
Filed:
Feb. 27, 2009
Rex Chin-yih Hong, Taipei, TW;
Herng-er Horng, Taipei, TW;
Hong-chang Yang, Taipei, TW;
Shieh-yueh Yang, Taipei, TW;
Rex Chin-Yih Hong, Taipei, TW;
Herng-Er Horng, Taipei, TW;
Hong-Chang Yang, Taipei, TW;
Shieh-Yueh Yang, Taipei, TW;
Other;
Abstract
Disclosed is an apparatus for measuring ac magnetization at mixture frequency. The apparatus includes an ac generating unit for generating at least a first current with a frequency fand a second current with a frequency f. The apparatus further includes a co-axial solenoid unit, driven by the first and second ac currents, to generate a first magnetic field and a second magnetic field. A pick-up solenoid is for disposing sample for detecting an ac magnetization of the sample and multiple frequency-component signals corresponding to various frequency combinations of fand fare output. The apparatus further includes a signal processing circuit for receiving the frequency-component signals, where the signal processing circuit obtains the ac magnetization of the sample at a target frequency of (γf+βf), which γand βare positive integers and the frequency fand the frequency fare two different frequencies.