Determination of parameters of symmetric coupled lines in an inhomogeneous medium using reflected and transmitted waveforms

Author

Sakagami, Iwata ; Chino, Satoshi

Author_Institution

Dept. of Electr. & Electron. Eng., Muroran Inst. of Technol., Hokkaido, Japan

Volume

40

Issue

4

fYear

1998

fDate

11/1/1998 12:00:00 AM

Firstpage

382

Lastpage

385

Abstract

A simple new method to determine unknown coupled line parameters (the even- and odd-mode characteristic impedances Z_e and Z _o and phase velocities V_e and V_o) is presented. The Z_e and Z_o can be determined by the amplitudes of the first reflected and transmitted waveforms and the V _e and V_o by the delay times of the second reflected and transmitted waveforms. Either V_e<V_o or V_e>V_o can be distinguished easily

Keywords

coupled transmission lines; electric impedance measurement; electromagnetic wave reflection; electromagnetic wave transmission; inhomogeneous media; strip lines; waveguide theory; amplitudes; coupled line parameters; delay times; even-mode characteristic impedance; inhomogeneous medium; measurement method; odd-mode characteristic impedance; phase velocities; quasi-TEM approximation; reflected waveform; strip lines; symmetric coupled lines; transmitted waveform; Admittance; Conductors; Couplings; Delay effects; Equivalent circuits; Impedance; Joining processes; Propagation delay; Strips; Transmission line matrix methods;

fLanguage

English

Journal_Title

Electromagnetic Compatibility, IEEE Transactions on

Publisher

ieee

ISSN

0018-9375

Type

jour

DOI

10.1109/15.736226

Filename

736226