Microwave Field-to-Pinted-Circuit-Board Coupling Measurements in Reverberation Chamber

摘要

We have recently reported an experimental study of microwave, 0.5 to 18 GHz, field-to-wire coupling for some basic wire geometries above a ground plane performed in Anechoic (AC) and Reverberation Chambers (RC). Receiving parameters and comparisons between measurements in the two chambers were presented. We showed e.g. that the antenna receiving cross section sigma(sub w) of wires measured in the RC follows a sigma(sub w)-distribution with two degrees of freedom. In this report we study the field-to-printed-circuit-board coupling for some single-sided, double-sided, and multi-layer printed-circuit-boards (PCBs) performed in RC. We present receiving parameters including the realized gain G(sub R), the impedance mismatch factor 1, the input resistance R(sub in), the receiving cross section sigma(sub w) and the effective antenna length h(sub e). We show that sigma(sub w) of traces on PCBs also follows a x(sup 2)-distribution with two degrees of freedom. The effective antenna length h(sub e) of traces on PCBs is found to be bounded by the wave length Lambda. The impedance matched receiving cross section is bounded by Lambda(sup 2)/8 pi.