Title :
Current suppression by external electromagnetic self-detecting structure in galvanomagnetic converters of electromagnetic field
Author :
Gura, K.N. ; Repa, F.M.
Author_Institution :
Nat. Tech. Univ. of Ukraine, Kiev, Ukraine
Abstract :
Summary form only given. The paper is devoted to increasing the accuracy of measuring converters (MC) of electromagnetic fields. When designing the galvanomagnetic measuring converters of feed-through power operation on the basis of galvanomagnetic phenomenon in ferromagnetic film, it has been noticed that along with a useful signal proportional to the feed-through power there is a signal proportional to the square of the ratio frequency current flowing though the ferromagnetic film. This undesirable signal is caused by the non-uniformity of the current distribution over the film thickness. A mathematical model of converter has been built. The model of the sensor of the converter of the power flow level is presented as a multilayer dielectric waveguide with layers of finite thickness and permittivity. Between the dielectric layers, a ferromagnetic film of given geometric dimensions and conductivity has been placed
Keywords :
convertors; current distribution; dielectric waveguides; electrical conductivity; electromagnetic devices; electromagnetic fields; galvanometers; magnetic thin films; permittivity; accuracy; conductivity; current distribution; current suppression; electromagnetic field; external electromagnetic self-detecting structure; feed-through power operation; ferromagnetic film; galvanomagnetic measuring converters; mathematical model; multilayer dielectric waveguide; permittivity; power flow level sensor; ratio frequency current; thickness; Current distribution; Current measurement; Dielectrics; Electromagnetic fields; Electromagnetic measurements; Frequency conversion; Frequency measurement; Mathematical model; Power measurement; Signal design;
Conference_Titel :
Mathematical Methods in Electromagnetic Theory, 1998. MMET 98. 1998 International Conference on
Conference_Location :
Kharkov
Print_ISBN :
0-7803-4360-3
DOI :
10.1109/MMET.1998.709938