Analysis of transmission line resonators using minimax polynomials

Author

Lertsirimit, Chatrpol ; Torrungrueng, Danai

Author_Institution

Dept. of Electr. & Electron. Eng., Asian Univ., Chon Buri, Thailand

fYear

2010

fDate

19-21 May 2010

Firstpage

1142

Lastpage

1144

Abstract

Input impedances of low-loss transmission line resonators are generally expressed in terms of transcendental functions. Poles and zeros of the resonators are not explicitly shown in these expressions. Minimax polynomials have been reported to accurately approximate some transcendental functions. In this paper, a minimax polynomial is used to approximate the input impedance expression of transmission line resonators. The approximate formula is used to find poles and zeros in the frequency range of interest. A numerical example shows that the input impedance calculated by the approximate formula agrees very well with that of the exact one.

Keywords

minimax techniques; poles and zeros; polynomials; resonators; transmission lines; input impedance expression; input impedances; low-loss transmission line resonators; minimax polynomials; poles and zeros; transcendental functions; Distributed parameter circuits; Equations; Impedance; Minimax techniques; Poles and zeros; Polynomials; Propagation constant; Propagation losses; Resonant frequency; Transmission lines;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Engineering/Electronics Computer Telecommunications and Information Technology (ECTI-CON), 2010 International Conference on

Conference_Location

Chaing Mai

Print_ISBN

978-1-4244-5606-2

Electronic_ISBN

978-1-4244-5607-9

Type

conf

Filename

5491655