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|Title:||Application of the spectral domain technique to discontinuity and spurious radiation problems in microwave circuits|
|Author(s):||Kouki, Ammar Ben Brahim|
|Doctoral Committee Chair(s):||Mittra, Raj|
|Department / Program:||Engineering, Electronics and Electrical|
|Discipline:||Engineering, Electronics and Electrical|
|Degree Granting Institution:||University of Illinois at Urbana-Champaign|
|Subject(s):||Engineering, Electronics and Electrical|
|Abstract:||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.
Next, the numerical aspects of the implementation of the spectral domain technique are discussed. Algorithms for handling the numerical difficulties associated with the presence of singularities, oscillations and infinite integration limits are presented.
Finally, conclusions from the study are presented and suggestions and recommendations for future research topics are made.
|Rights Information:||Copyright 1991 Kouki, Ammar Ben Brahim|
|Date Available in IDEALS:||2011-05-07|
|Identifier in Online Catalog:||AAI9210877|
This item appears in the following Collection(s)
Graduate Dissertations and Theses at Illinois
Graduate Theses and Dissertations at Illinois