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Transfer matrix (TM) models are developed in this paper for varies types of synthetic jet (or zero-net mass-flux) actuators used in active flow control applications. The analysis and design of a synthetic-jet actuator is greatly simplified by the use of the transfer matrix method, which treats the synthetic-jet actuator as a two-port network with input and output ports. The TM method is a powerful alternative to lumped-element modeling. The models are summarized, and the resulting predictions match favorably with previously published results.