Title :
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
fDate :
11/1/1998 12:00:00 AM
Abstract :
A simple new method to determine unknown coupled line parameters (the even- and odd-mode characteristic impedances Ze and Z o and phase velocities Ve and Vo) is presented. The Ze and Zo can be determined by the amplitudes of the first reflected and transmitted waveforms and the V e and Vo by the delay times of the second reflected and transmitted waveforms. Either Ve<Vo or Ve>Vo 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;
Journal_Title :
Electromagnetic Compatibility, IEEE Transactions on
