## 3 Experimental Measurements
### Experimental Set-Up  
We conducted the experimental measurements in an attenuation chamber, which offers an optimal environment for precise and reproducible measurements under controlled conditions. This is essential for obtaining dependable results. The measurements will provide important information about exposure to EM radiation, which is crucial for assessing potential health impacts and developing safer technologies and equipment that minimize EMF exposure. By finding the effective value of the electrical intensity on the surface of the human phantom, we aim to gain a deeper understanding of how EMF interacts with the human body. To perform the measurement, we utilized the ANRITSU high-frequency signal generator and connected it to the broadband Horn antenna DRH 18-E using coaxial cables and SMA connectors. The generator was set to a frequency of 1.8 GHz with a maximum output power of 20 dBm. We then prepared a measuring table on which a phantom and ANRITSU spectrum analyser were placed. The VERT900 Vertical Antenna receiving probe was connected to the spectrum analyser using a connector with an attenuation element. The synthesized signal generators in the MG369 XB series are high-resolution signal sources that are microprocessor-controlled and capable of phase-locking. They can produce discrete CW frequencies as well as wideband (full range) and narrowband step bands within the frequency range of 2 GHz to 67 GHz. Additionally, there are options available to expand the lower limit of the frequency range to 0.1 Hz. The signal generator's functions can be controlled locally via the front panel or remotely (excluding on/off) through the IEEE-488 general purpose bus (GPIB). The Broadband Horn antenna DRH 18-E is a high-precision antenna designed for a wide range of applications. It can be used to evaluate exposure to EM radiation in \begin{table}
\begin{tabular}{l c c c c} \hline \hline
**Distance** & **5 mm** & **15 mm** & **50 mm** & **300 mm** \\ \hline
**E** [V/m] **by CST—SM 2** & 408.28 & 159.63 & 103.55 & 54.96 \\
**E** [V/m] **by CST—Child 2** & 453.77 & 181.05 & 119.84 & 65.34 \\
**E** [V/m] **by CST—Laura 2** & 449.17 & 177.97 & 116.38 & 62.81 \\ \hline \hline \end{tabular}
\end{table} 
Table 2: The highest effective electric field intensity values for each model in the simulations at the specified distances with CPM (simulations 2). the microwave band, accurately measure energy ratios of microwave radiation to assess population radiation safety, and measure parameters of all types of EMF where high measurement accuracy across a wide frequency range is required (1 MHz to 19 GHz) (Figure 7). Technical data of the antennae are listed in Table 3.  
The Vertical Antenna functions as a receiving probe. It is a dual-band vertical antenna specifically designed for use in the 824-960 MHz and 1710-1990 MHz frequency bands, making it well-suited for GSM, 3G, and some 4G LTE applications. With a gain of 3 dBi, this antenna provides reliable coverage in both bands, making it suitable for various wireless communication needs, including mobile networks and fixed wireless applications. The Anritsu Spectrum Master is designed to monitor, measure, and analyse signals VERT900 in the frequency range from 100 kHz to 3 GHz. Typical measurements include in-band interference, transmission spectrum analysis, antenna isolation, and cell area interference. It offers a range of marker functions, such as peak, mid, and delta functions, for faster and more comprehensive measurement of displayed signals. The overall measuring set is presented in the block diagram shown in Figure 8.  
A human body phantom with the following characteristics and composition is used for measurements (see Figure 9). The phantom consists of a human torso bust filled with physiological NaCl solution, simulating the conductive internal environment of the human body. This solution mimics the fluids in the human body, allowing realistic modelling of  
Figure 8: Block diagram of the measuring set.