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Proceedings Paper

Numerical Modeling Of Generalized Millimeter-Wave Transmission Media With Finite Element And Transmission Line Matrix Methods
Author(s): Eswarappa G. Costache; W. J. R. Hoefer
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Paper Abstract

In this paper, a general finite element method as well as a graded-mesh TLM procedure for determining the dispersion characteristics, field distribution, pseudo-impedance and losses of generalized millimeter-wave transmission media are described. These methods cover arbitrary cross-sections and account for realistic features (finite metallization thickness, substrate mounting grooves etc.) that are often neglected in theoretical analysis. Dispersion characteristics and characteristic impedances obtained for dielectrically loaded ridged waveguides compare well with the available data. Conductor and dielectric losses are also computed for these structures. A modified finline structure called " ridged fin-line" is also analysed. The main advantages of this structure are its large monomode bandwidth and reduced dispersion. The cutoff frequencies of bilateral finlines in circular waveguides are also computed.

Paper Details

Date Published: 18 November 1989
PDF: 2 pages
Proc. SPIE 1039, 13th Intl Conf on Infrared and Millimeter Waves, (18 November 1989); doi: 10.1117/12.978425
Show Author Affiliations
Eswarappa G. Costache, Univ. of Ottawa (Canada)
W. J. R. Hoefer, Univ. of Ottawa (Canada)

Published in SPIE Proceedings Vol. 1039:
13th Intl Conf on Infrared and Millimeter Waves
Richard J. Temkin, Editor(s)

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