Novel Methodologies and Measurement Software for Transistor Amplifier Synthesis in Planar Coupled -Transmission Lines
Nickel, Joshua George
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Permalink
https://hdl.handle.net/2142/80717
Description
Title
Novel Methodologies and Measurement Software for Transistor Amplifier Synthesis in Planar Coupled -Transmission Lines
Author(s)
Nickel, Joshua George
Issue Date
2001
Doctoral Committee Chair(s)
Schutt-Ainé, José E.
Department of Study
Electrical Engineering
Discipline
Electrical Engineering
Degree Granting Institution
University of Illinois at Urbana-Champaign
Degree Name
Ph.D.
Degree Level
Dissertation
Keyword(s)
Engineering, Packaging
Language
eng
Abstract
This thesis concerns the synthesis of active devices in coupled-microstrip and coupled-coplanar technology. We first discuss several aspects of multiconductor transmission line (MTL) theory, including longitudinal dependencies of immittance functions. We next describe a frequency domain normal mode parameter extraction method for a symmetric, uniform, MTL section. This is applied to coupled microstrip and coplanar lines for distributed circuit parameter extraction from S-parameter simulation. Measurement techniques for characterization of MTL structures with multiple ports and multiple propagating modes are then discussed and applied. Finally, these analyses and tools form a basis for the synthesis of several matching networks strategies (stubs, reactances, transformers) to maximize power to a load for the unilateral and bilateral cases. Measurement of synthesized structures verifies the reflection reduction and power savings. Using these matching networks, a preliminary MTL transistor amplifier is presented, and a methodology for an advanced design technique with maximum accuracy is developed.
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