Title :
Autoregressive (AR) spectral estimation technique for faster TLM analysis of microwave structures
Author :
Eswarappa, C. ; Hoefer, W.J.R.
Author_Institution :
Dept. of Electr. & Comput. Eng., Victoria Univ., BC, Canada
Abstract :
A spectral estimation technique based on the Autoregressive (AR) method has been successfully implemented to increase the efficiency of the TLM method. It can be used to compute the full time-domain response from a relatively short segment of the early TLM response. It was found that the Least-Square technique of estimating the AR parameters requires a shorter time record than solving the Yule-Walker equations through the Levinson-Durbin algorithm. Application to a three-section waveguide bandpass filter at 35 GHz shows that this technique gives very accurate scattering parameters with computational savings of up to five times.<>
Keywords :
S-parameters; band-pass filters; least squares approximations; microwave filters; passive filters; spectral-domain analysis; stochastic processes; time series; time-domain analysis; transmission line theory; waveguide theory; 35 GHz; TLM analysis; autoregressive spectral estimation technique; computational savings; least-square technique; microwave structures; scattering parameters; three-section waveguide bandpass filter; time-domain response; Band pass filters; Equations; Parameter estimation; Scattering parameters; Time domain analysis;
Conference_Titel :
Microwave Symposium Digest, 1994., IEEE MTT-S International
Conference_Location :
San Diego, CA, USA
Print_ISBN :
0-7803-1778-5
DOI :
10.1109/MWSYM.1994.335521
