This article deals with analytical calculation of the near-field of an electric dipole in Cartesian coordinate system in a closed form. Results of the analytical calculation are verified by numerical method.
The article deals with classification and quantification of electromagnetic field measurement errors in case an isotropic sensor as a field probe is used. The focus is mainly on the error of measurement method, resulting from mutual interaction of the field probe sensors associated with the origin of the so-called mutual impedance.
This paper deals with of input parameters observation of the electromagnetic field generator. The frequency course character of this parameter plays a key role in specific sensor kind sensing principle. This senor is designed for non-electrical quantities measurement. The sensing principle is based on changes of electromagnetic field properties which are affected by this sensor resonance. This paper contains complete design of this sensor with analytical model, which describe sensing principle. The second part of this paper is focused to detail numerical analysis by new multi-numerical calculation techniques. Result of this analysis describe not only the sensor functionality but also change of sensor characteristic when is used structural material with another dielectric parameters.Streszczenie. Artykuł dotyczy analizy parametrów wejściowych generatora pola elektromagnetycznego. Charakterystyki częstotliwościowe tych parametrów odgrywają kluczową rolę w zastosowaniu specyficznego czujnika. Czujnik ten został zaprojektowany do pomiaru wielkości nieelektrycznych. Zasada działania bazuje na zmianach właściwości pola elektromagnetycznego przy zmianach częstotliwości rezonansowej czujnika. Artykuł opisuje cały proces projektowania czujnika łącznie z modelem analitycznym opisującym zasadę działania. Druga część artykułu skupia się na analizie numerycznej wykorzystującej hybrydowe metody obliczeniowe. Wyniki analizy pokazują zastosowanie czujnika wykonanego z różnych materiałów o różnych parametrach dielektrycznych. (Zmiany właściwości pola elektromagnetycznego w zależności od stałej dielektrycznej materiału).
The article deals with vector potential calculation of the small electrical loop. The method of integral analytical expression solves the problem in the details. This type of integral is the same as in the theory of antenna. This method is simpler than standard method and it makes some connection between radiation theories of point source at the far field and loop at the near field.
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