Implementation of wave digital model in analysis of arbitrary nonuniform transmission lines

Abstract

An efficient method of analysis of nonuniform transmission lines (NTL), based on wave digital model composed of cascaded unit elements and two‐port adaptors, is described. The proposed technique treats NTL as a cascade connection of equal‐length or equal‐delay uniform transmission lines. A simple algorithm for calculating transmission and input reflection coefficients is derived. Two application examples, proving the efficiency and response accuracy of the new technique, are given. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 49: 2150–2153, 2007; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.22706

Equivalent Thevenin Source Method as Tool for Response Calculation of Wave Digital Structures

“…The simulation result of scattering parameter 21 S is depicted in Figure 8. When compared with the findings of the previous studies [5][6][7], the computer simulated result is found to be consistent with them.…”

“…A computer program is written to implement the proposed algorithm, and one test case is performed: a microstrip lowpass filter [6]. The result is found to be consistent with the findings of the previous studies [5][6][7].…”

“…6 = ε r and the board thickness is m h µ = 635 . A procedure of modeling microstrip filter by WDS is described in the paper [5]. The simulation result of scattering parameter 21 S is depicted in Figure 8.…”

“…In paper [5], an efficient method of analysis of nonuniform transmission lines, based on wave digital model composed of cascaded UE and TPA, is described. The transfer parameter approach is employed to determine response of WDS.…”

A combined wave digital/full-wave electromagnetic approach used for response calculation in equivalent networks of microwave circuits

“…Finally, WDN pictured in Figure 2, designed as a cascade connection of frequency-independent twoport series adaptors and a frequency-dependent twoport UEs is obtained. Analysis of resultant network is then done using earlier developed one-dimensional wave digital approach [4]. 978-1-4673-5707-4/13/$31.00 ©2013 IEEE…”