Measured scattering parameters for the coupling of stochastic electromagnetic fields to an unshielded twisted pair cable with a matched termination for different pitch distances

The coupling of stochastic electromagnetic fields into an unshielded twisted double-wire transmission line has been measured in a reverberation chamber. One end of the line features a matched load resistance and is therefore anechoic. With this chosen configuration, the influence of the pitch distance onto the frequency-dependent coupling can be clearly exposed. The measurement results confirm an existing simulation model that is based on transmission line theory and the plane wave integral representation.<br><br>The raw data of the measurement is saved in text files.<br><br>Each subfolder is for a different measurement with a different pitch distance or for the coupling between the antennas.<br><br>The meaning of the examplary filename "alpha_0.0_s11_imag.out" is as follows:<br>- "alpha_0.0" stands for a stirrer angle of 0°<br>- "s_11" means the scattering parameter s_11 (there are also s_12, s_21 and s_22)<br>- "imag" is for the imaginary part<br>- "real" is for the real part<br><br>The content of each file is the scattering parameter, where each line stands for a different frequency.<br><br>The file "alphas.out" contains all the stirrer angles (in °).<br><br>The file "freqs.out" contains all the frequencies (in Hz).<br><br>If you encounter any problems or if you have any questions, please contact:<br><br>Mathias Magdowski<br>Chair for Electromagnetic Compatibility<br>Institute for Medical Engineering<br>Otto von Guericke University Magdeburg, Germany<br>[e-mail] or [e-mail]<br>Tel. [phone]<br><br><br>