O3-1 Challenges on derivation of high-frequency radiation limits for power drive systems, Bernd JAEKEL and Ana VUČKOVIĆ
All electrical and electronic equipment needs to limit its unintentional high frequency emissions in order not to affect radio reception in an intolerable degree. Such limits have been specified for power drive systems for several decades already. The actual values of the limits depend on the location such systems are intended to be used, applicable to the various categories of power drive systems. However, for the category C3 power drive systems higher limits than those in the respective generic standards are specified, mostly due to some technical and economic reasons. Hence, a justification for applying less stringent limits is needed to demonstrate that also those limits are sufficient not to affect radio reception. This paper identifies and discusses the challenges for the engineering-based approach to provide such a justification and presents already some results when using a probabilistic approach in deriving the less stringent limits.
O3-2 Computation of current densities in spheroidal human model originating from electromagnetic fields exposure near transmission lines, Bojan GLUSHICA, Andrijana KUHAR and Vesna ARNAUTOVSKI TOSEVA
Electromagnetic fields around transmission lines are of particular interest because of their large magnitude. Exposure to such fields may affect surrounding equipment or pose a safety risk. Time-varying fields give rise to current densities in the human body. In this paper a spheroidal model of the human body is used to calculate the intensity of the induced currents and estimate possible risks. The electromagnetic fields are obtained from simulated models of transmission lines with typically used geometries.
O3-3 Electromagnetic radiation exposure indicators of population from wireless communication, Dejan KRSTIĆ, Uglješa JOVANOVIĆ, Darko ZIGAR, Jelena MALENOVIĆ-NIKOLIĆ, Željko HEDERIĆ and Mina KRSTIĆ
The assessment of electromagnetic field exposure plays a crucial role in safeguarding the population against potential health risks associated with electric and magnetic fields. It is well-established that prolonged and continuous exposure to electromagnetic radiation raises concerns regarding adverse health effects, even within the permissible limits defined by standards and regulations. The assessment of electromagnetic field exposure and its potential impact on public health requires the introduction of novel physical quantities that measure absorbed energy from non-ionizing electromagnetic radiation. These quantities play a crucial role in advancing the study of this subject and serve as indicators of population exposure. This paper presents a comprehensive analysis of various exposure indicators and absorbed radiation doses emitted by wireless devices such as mobile phones and wireless routers used in residential settings. The proposed indicators and doses offer valuable insights into the potential impact of wireless communications on public health.
O3-4 Distribution of SAR1g in a human head when using a mobile phone with the hands-free feature, Uglješa JOVANOVIĆ, Darko ZIGAR, Jelena MALENOVIĆ-NIKOLIĆ and Dejan KRSTIĆ
The presented paper examines the distribution of SAR1g in the adult male head, focusing on the impact of using modern mobile phone with the hands-free feature as a source of electromagnetic radiation. The study evaluates three different positions of the mobile phone to identify the optimal placement that yields the most secure SAR1g distribution, relative to the conventional talking stance. The evaluation incorporates GSM bands operating at both 900 MHz and 1800 MHz, accounting for the alignment between the mobile phone and the head.
O3-5 Arduino ionizing radiation dosimeter based on BG51 sensor, Miloš MARJANOVIĆ, Emilija ŽIVANOVIĆ, Danijel DANKOVIĆ and Goran RISTIĆ
This paper presents an ionizing radiation dosimeter based on an Arduino microcontroller and a BG51 sensor. With the help of a microcontroller, it reads the semiconductor radiation sensor, controls the sound signaling in case of radiation detection, calculates the value of the equivalent dose rate and sends the data to the computer via serial communication, and displays it on the LCD.