Title page for ETD etd-04142009-040614

Type of Document Master's Thesis
Author Lu, Shu
URN etd-04142009-040614
Title Design, fabrication, and characterization of a wideband microwave balun
Degree Master of Science
Department Electrical Engineering
Advisory Committee
Advisor Name Title
Elshabini-Riad, Aicha A. Committee Co-Chair
Riad, Sedki Mohamed Committee Co-Chair
Stutzman, Warren L. Committee Member
  • Microwave devices
Date of Defense 1990-04-05
Availability restricted

A wideband microwave balun is designed to adapt unbalanced to balanced transmission line networks. The balun is realized by a planar microstrip line configuration on a double copper c1added teflon-ceramic C0I11posite board. The microstrip line conductor pattern was formed on the board using the chemical etching process. The fabricated balun is measured and evaluated in both the time domain and frequency domain, indicating a 5 GHz bandwidth. The time domain modeling technique is used to characterize the balun's performance. Based on physical analysis of the balun's configuration, the discontinuities through the transmission paths are modeled as distributed and lumped elements, resulting in an equivalent network model for the balun structure. The obtained model successfully simulates the balun's performance.

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