Title :
Computer-aided design of microstrip filters by iterated analysis
Author :
Roan, Gary T. ; Zaki, Kawthar A.
Author_Institution :
US Naval Res. Lab., Washington, DC, USA
fDate :
11/1/1988 12:00:00 AM
Abstract :
An iterative method for the design of microstrip low-pass elliptic function filters is described. The method, which is a direct extension of the work of H.J. Orchard (IEEE Trans. Circuit Syst., vol.CAS-32, no.11, p.1089-96, 1985), determines the microstrip line parameters that produce the same locations of the frequencies of transmission zeros and reflection zeros of an equivalent lumped-element prototype. Effects of the discontinuities at the junction are easily accounted for in the iteration. A design example is included, and an experimental seventh-order filter designed and constructed using the procedure gives measured results that agree closely with theory
Keywords :
circuit CAD; distributed parameter networks; equivalent circuits; iterative methods; linear network synthesis; low-pass filters; microwave circuits; microwave filters; passive filters; poles and zeros; strip line components; CAD; computer aided design; equivalent lumped-element prototype; iterated analysis; low-pass elliptic function filters; microstrip filters; microstrip line parameters; passive microwave filters; reflection zeros; seventh-order filter; transmission zeros; Circuits; Design automation; Design methodology; Filtering theory; Frequency; Iterative methods; Low pass filters; Microstrip filters; Prototypes; Reflection;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
