Description
This comprehensive new book helps fortify your understanding of the most popular time and frequencydomain techniques used to analyze nonlinear microwave circuits  and shows you how to get better performance from these techniques using circuitanalysis software. This is the only book to detail the use of semianalytic and numerical physical models in nonlinear circuit analysis, and to discuss the two uses of physical models in nonlinear CAD. Armed with the information presented, you can attain a more reliable yield analysis of nonlinear MMICs and also: Utilize robust algorithms that help you analyze highly nonlinear circuits while maintaining good convergence properties; Make better use of commercial nonlinear circuit simulators and develop your own custommade simulators from scratch; Employ stepbystep methods to integrate circuit equations and improve the convergence of harmonicbalance. Supported by 330 equations, practical examples, and readymade samples of computer code written in C, this book is an invaluable reference for microwave engineers, researchers, developers, and graduate students.
Table Of Contents
1.Introduction: Frequency Generation in Nonlinear Circuits. Nonlinear Microwave Circuits. Relationships Between Fourier Coefficients and Power. Numerical Analysis of Nonlinear Circuits  A Simple Example. 2. EquivalentCircuit Models: Nonlinear Circuit Elements. Microwave Diodes. Microwave MESFETs. Parameter Determination. Limitations of EquivalentCircuit Models. 3. Physical Models: MMIC Technology and Physical Models. Physical Modeling of GaAs MESFETs. Microwave Nonlinear Circuit Analysis Based on Physical Models. Device Equations. An Analytic GaAs MESFET Physical Model. A Numerical MESFET Physical Model. EquivalentCircuit Model Generation. Final Remarks. 4. Formulation of the Circuit Equations: Resistive Circuits. Graphs and Kirchhoff's Laws in Matrix Form. Tableau Analysis. Nodal Analysis. Modified Nodal Analysis (MNA). General Formulation of the Circuit Equations. 5. Algorithms for Solving Systems of Nonlinear Algebraic Equations: Introductory Concepts. Newton's Method. QuasiNewton or Modification Methods. Continuation Methods. Solution of Systems of Linear Algebraic Equations. Newton's Method Discrete Equivalent Circuit. 6. TimeDomain Methods  Integration of the Circuit Equations: Transmission Line Models in the Time Domain. Circuit Equations in the Time Domain. Numerical Integration of Ordinary Differential Equations. Models for Nonlinear Capacitors and Inductors. Resistive Associated Discrete Circuit Models. StepSize Control. The Shooting Method. Final Remarks. 7. FrequencyDomain Methods  the Harmonic Balance: Equations for Linear Circuits in the Frequency Domain. Spectrum Truncation. Generalized Discrete Fourier Transform. Fourier Transform Implementation.Introduction to Harmonic Balance in Circuit Analysis. General Formulation of Harmonic Balance for Circuit Analysis. Jacobian Computation. Autonomous Circuit Analysis. Other FrequencyDomain Methods. Final Remarks. 8. Some Aspects of Software Implementation: Circuit Description. Implementation of Nonlinear Functions in Semiconductor EquivalentCircuit Models. Implementation of Physical Models in Circuit Simulators. Newton's Method Damping Factor. An Algorithm Based on a QuasiNewton Method. 9. Some Examples of Nonlinear Circuit Analysis: Van der Pol Oscillator. Schottky Diode EquivalentCircuit Model. MESFET Physical Model. Appendices
Author

Paulo Jose Cunha Rodrigues