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dc.creatorSchwindt, Randall Scott
dc.descriptionDue to the character of the original source materials and the nature of batch digitization, quality control issues may be present in this document. Please report any quality issues you encounter to, referencing the URI of the item.en
dc.descriptionIncludes bibliographical references.en
dc.description.abstractCoupled line structures in inhomogeneous media are analyzed and applied in three circuits, a novel three-coupled line bandpass filter having sharp cutoff and two planar baluns composed of two sections of broadside-coupled lines. These are very suitable for microwave integrated circuits (MIC) and microwave integrated circuits (MMIC). Two quasistatic analyses, the spectral domain analysis and a variational technique, are applied to the three-coupled line structure for the first time and numerical data are presented. The spectral domain analysis is utilized to obtain results for two lines. A quasi-TEM analysis is applied to the three- coupled line structure and specific port terminations are applied to the resulting six-port impedance matrix to obtain the ABCD matrix parameters for a bandpass filter. By a similar quasi-TEM analysis, the generalized four-port scattering matrix of a two-coupled line structure is derived for the first time. The scattering matrix for two planar baluns are derived using the generalized scattering matrix. A design procedure for the planar Marchand balun based on the derived scattering parameters is presented. Experimental results from circuits designed with this theory are presented and are seen to agree well with prediction.en
dc.publisherTexas A&M University
dc.rightsThis thesis was part of a retrospective digitization project authorized by the Texas A&M University Libraries in 2008. Copyright remains vested with the author(s). It is the user's responsibility to secure permission from the copyright holder(s) for re-use of the work beyond the provision of Fair Use.en
dc.subjectelectrical engineering.en
dc.subjectMajor electrical engineering.en
dc.titleAnalysis of three and two coupled lines and design of a planar coupled-line bandpass filter and of baluns suitable for MIC and MMICen
dc.typeThesisen engineeringen
dc.format.digitalOriginreformatted digitalen

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