Title :
A technique for determining the normalized impedance of slots in the image plane of the image NRDG
Author :
Chirwa, Lawrence C. ; Yamamoto, Manabu ; Omiya, Manabu ; Itoh, Kiyohiko
Author_Institution :
Graduate Sch. of Eng., Hokkaido Univ. Sapporo, Japan
fDate :
5/1/2001 12:00:00 AM
Abstract :
This paper presents a method for determining the normalized impedance of a transverse slot in the image plane of the image nonradiative dielectric guide using measurements of the standing wave. The method overcomes the problem of distortion caused by the scattered evanescent fields that are present in the vicinity of the slot. The measurement equipment, its optimum parameters, and aspects necessary for accurate measurements are also discussed. Moreover, the finite-difference time-domain technique is employed to determine the normalized slot impedance, and good agreement is obtained with measured results, confirming the reliability of the method
Keywords :
electric impedance measurement; finite difference time-domain analysis; microwave measurement; nonradiative dielectric waveguides; waveguide theory; 13 to 14.4 GHz; FDTD technique; finite-difference time-domain technique; image NRD guide; image plane; measurement equipment; nonradiative dielectric guide; normalized impedance; optimum parameters; scattered evanescent fields; slot impedance; standing wave measurements; transverse slot; Dielectric measurements; Distortion measurement; Finite difference methods; Impedance measurement; Insertion loss; Millimeter wave measurements; Millimeter wave technology; Particle measurements; Probes; Time domain analysis;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
