Application of the spectral domain technique to discontinuity and spurious radiation problems in microwave circuits

The spectral domain method is applied to four different problems involving microwave and millimeter-wave circuits. First, a general spectral domain formulation of the problem of electromagnetic coupling through apertures in a planar conducting screen is presented. This method is validated by analyzing resonant slots and comparing the results to previously published findings. Second, a class of slotted guiding structures is analyzed with a mixed spectral domain approach derived from the original aperture coupling formulation. The dispersion characteristics of several practical slotted structures are presented. Third, the discontinuity and radiation effects of a thin slot in the ground plane of a microstrip line are analyzed using the spectral domain approach. The scattering parameters of the slot are computed and compared to measured results. An equivalent circuit model of the slot discontinuity at low frequencies is also developed. Fourth, the spurious radiation and scattering from arbitrarily shaped microstrip etches are analyzed using the spectral domain method. A parametric study is carried out to identify the worst-case scenario for radiation.

Name thesis:degree_name

Ph.D.

Level thesis:degree_level

Dissertation

Discipline thesis:degree_discipline

Engineering, Electronics and Electrical

Grantor

University of Illinois at Urbana-Champaign

Year dc:date

2011

Author dc:creator

• Kouki, Ammar Ben Brahim

Contributors dc:contributor

• Mittra, Raj

• Engineering, Electronics and Electrical

Statement dc:rights

• Copyright 1991 Kouki, Ammar Ben Brahim

Language dc:language

eng

Identifier

AAI9210877
(UMI)AAI9210877

OAI identifier oai:identifier

oai:www.ideals.illinois.edu:2142/20861