Characterization of Microwave Structures Using ARMA System Identification and TLM Method

C. Eswarappa and W. J. R. Hoefer

IEEE Antennas and Propagation Society International Symposium, pp 1124-1127, University of Washington, Seattle, Washington USA, June 19-24 1994.


A spectral esimation technique based on an autoregressive moving average (ARMA) model has been combined with the transmission line matrix (TLM) method for efficient characterization of microwave structures. A recursive least square covariance ladder algorithm has been used for the ARMA modeling. The scattering parameters of a microwave bandpass filter have been obtained directly from the ARMA coefficients, with a computational savings of more than fifty percent.

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