What question did this study set out to answer?

To develop a signal flow graph representation for small-signal responses of weakly nonlinear microwave circuits operating around a large-signal operating point using X-parameters.

April 4, 2022Open Access

Signal-Flow-Graph Analysis of Weakly Nonlinear Microwave Circuits around a Large-Signal Operating Point

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Authors

SAShuhei AmakawaHiroshima University RSRyotaro SugimotoHiroshima University KTKorkut Kaan TokgözSabancı Üniversitesi

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Implication

Analytical modeling demonstrates signal flow graph representation for nonlinear microwave circuits using X-parameters, highlighting circuit behavior under large-signal operation.

Key Points

To develop a signal flow graph representation for small-signal responses of weakly nonlinear microwave circuits operating around a large-signal operating point using X-parameters.
Formulated an expanded signal flow graph framework incorporating explicit negative-frequency nodes to capture inter-frequency interactions.
Derived a closed-form analytical expression for power amplifier output power as a function of the load reflection coefficient and plotted approximate load-pull power contours.
Clarified the physical and operational meaning of T-type small-signal X-parameters as representations of coupling between positive- and negative-frequency components.
Produced a closed-form expression for the optimum load reflection coefficient that generalizes previous analytical formulations while maintaining consistency with established benchmarks.

Cite This Study

Amakawa et al. (2022) studied this question.

synapsesocial.com/papers/6a8878c033299ecf904fe805 https://doi.org/10.36227/techrxiv.19471928.v1

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Implication

Analytical modeling demonstrates signal flow graph representation for nonlinear microwave circuits using X-parameters, highlighting circuit behavior under large-signal operation.

Signal-Flow-Graph Analysis of Weakly Nonlinear Microwave Circuits around a Large-Signal Operating Point

Discussion

Member takes

Implication

Key Points

Cite This Study

Signal-Flow-Graph Analysis of Weakly Nonlinear Microwave Circuits around a Large-Signal Operating Point

Discussion

Member takes

Implication

Key Points

Cite This Study

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