Frequency Dependent Attenuation of Metal Joint Configurations

Abstract

Frequency dependent attenuation of overlapping metal sheet joints has been analyzed within the frequency range 0.3 -18 GHz, making use of three different approaches: calculations based on the theory of small reflections in a TEM parallel plate mode, numerical simulations using HFSS, and Reverberation Chamber measurements. Calculations and simulations show that metal joints modeled as sets of parallel plates lead to specific resonances as a function of frequency, which are valid for the full 0.3 -18 GHz frequency domain. This resonance pattern was verified by measurements.