Nonreciprocal microwave devices using parametric frequency conversion
Krol, John Andrew
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https://hdl.handle.net/2142/97470
Description
Title
Nonreciprocal microwave devices using parametric frequency conversion
Author(s)
Krol, John Andrew
Issue Date
2017-04-25
Director of Research (if dissertation) or Advisor (if thesis)
Gong, Songbin
Department of Study
Electrical & Computer Eng
Discipline
Electrical & Computer Engr
Degree Granting Institution
University of Illinois at Urbana-Champaign
Degree Name
M.S.
Degree Level
Thesis
Keyword(s)
Nonreciprocal devices
Parametric
Low noise
Radio frequency (RF)
Microwave
High frequency circuits
Abstract
This thesis endeavors to characterize the performance of nonreciprocal microwave devices enabled by parametric frequency conversion. Although such devices have been explored somewhat superficially in the 1960s, resurgent interest in low-noise nonreciprocal components has motivated new research in parametric frequency conversion. In particular, this work explores the contributions of nonidealities to performance degradation of a parametric gyrator. Expressions are developed for loss and noise performance contributed by nonideal components constituting the gyrator, and simulations are used to verify the findings. The gyrator is then used to construct a circulator, and its performance's dependence on the same nonidealities is evaluated. A simulated design example is used to demonstrate a practical realization of such a circulator.
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