NDLI: Input impedance of a probe excited semi-infinite rectangular waveguide with a tuning post

Content Provider	IEEE Xplore Digital Library
Author	Helaly, A.M. Jarem, J.M.
Copyright Year	1990
Description	Author affiliation: Dept. of Electr. & Comput. Eng., Alabama Univ., Huntsville, AL, USA (Helaly, A.M.; Jarem, J.M.)
Abstract	The input impedance and surface current of a probe-excited, shortcircuited, semi-infinite rectangular waveguide are determined, in the absence and in the presence of a tuning post, by the method of moments. Expressions are given for the Green's function in the semi-infinite rectangular waveguide and for the free space impressed electric field. The method of moments analysis is based on the assumption that the probe (and the post) consists of multifilament sources that have some surface current density components with unknown coefficients. The solution for these coefficients is found by applying the boundary conditions at some suitable points. Computer simulation for this problem is performed, and the input impedance and surface current are determined for different probe lengths, lateral positions, and distances from the short-circuited end of the waveguide and also for different values of post length, position, and radius. The case in which the post is not short-circuited by the upper wall of the waveguide is also studied.
Starting Page	161
Ending Page	167
File Size	330095
Page Count	7
File Format	PDF
ISBN	0818620382
ISSN	00942898
DOI	10.1109/SSST.1990.138131
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1990-03-11
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Probes Rectangular waveguides Surface impedance Moment methods Current distribution Circuit optimization Boundary conditions Coaxial components Surface waves Computer simulation
Content Type	Text
Resource Type	Article

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