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Title: Analysis and designs of symmetrical six-port microstrip couplers
Authors: CHEN YUAN
Keywords: Microstrip components, multiport networks,
Issue Date: 6-Mar-2009
Citation: CHEN YUAN (2009-03-06). Analysis and designs of symmetrical six-port microstrip couplers. ScholarBank@NUS Repository.
Abstract: Transmission-line analysis has been employed to derive closed-form eigen-admittance expressions that can be used to predict the scattering coefficients of symmetrical six-port microstrip couplers which may be implemented in a diversity of structural forms. The compilation of these analytical formulas forms the basis of the computer model. The wide range of add-on design options that are available provides greater flexibility in the optimization search for symmetrical six-port microstrip couplers that are suitable for selected applications. Laboratory measurements have confirmed that the resulting six-port prototypes meet the design specifications over bandwidths of 49% for six-port reflectometer application, 36% for five-way power division/combination application and 6% for three-way crossover application. The experience gained during the analysis and design of the six-port crossover has been extended to analyze and design a four-port crossover. With its reduced structural complexity, the resulting prototype is able to yield a measured bandwidth of 20%.
Appears in Collections:Ph.D Theses (Open)

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