An alternative technique for estimating the k-factor from the phase of the electromagnetic field within a reverberating chamber

In this paper, an alternative technique for estimating the Rice factor, K, is applied to the phase of electromagnetic field within a reverberating chamber (RC) for classifying the fading depth on the coherent components in the emulated line-of-sight (LOS) environments. The estimator is time-effective and general, and can be applied for any angle of arrival (AoA) of the received field and for any time varying propagation channel as a complementary method to the classical estimators for evaluating K above all when small but consistent coherent components are present. Measurements accomplished at the RC of the Università di Napoli Parthenope (formerly Istituto Universitario Navale, IUN) confirm the goodness of the proposed technique

Measurements on the reflectivity of materials in a Reverberating Chamber

The experimental validation is an important step in any measurement procedures development. In this paper, according to the absorber method, a meaningful set of experimental results for the evaluation of the reflectivity of materials in a Reverberating Chamber (RC) is shown in order to validate the attendant measurement procedure. Measurements on a frequency range between 1 to 18 GHz have been successfully accomplished on four different shields of metallic mesh grid shape. Further, enhancements to increase the measurement dynamic have been also discussed. Results show that the procedure is able to simply evaluate metallic mesh grid reflectivity that can be used in designing shields to be incorporate into the wall structure of buildings for realizing the desired electromagnetic isolation of real-life environments