The statistical model proposed in an accompanying paper is generalized to treat multiport scattering problems. Attention is first focused on two-port lossless systems and the model is shown to be consistent with Random Matrix Theory. The predictions are then tested by direct numerical simulation for a specific two-port cavity. Formulae are derived for the average transmission and reflection coefficients in terms of the port radiation impedance. The cases of cavities with multiple ports, and with a single port and distributed losses are compared.
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Zheng et al. (2005) studied this question.