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Introduction to sensitivity analysis approaches

Introduction to sensitivity analysis approaches

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Adjoint Sensitivity Analysis of High Frequency Structures with MATLAB® — Recommend this title to your library

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In this chapter, we give an initial introduction to adjoint techniques. We first review the classical approaches for derivative estimation and illustrate their computational cost. Approaches such as forward finite differences (FFD), backward finite differences (BFD), and central finite differences (CFD) are addressed. These approaches are utilized in later chapters as a reference to compare the estimated adjoint sensitivities against. We then present an adjoint sensitivity formulation that is suitable for analyzing electric circuits. The adjoint SA of electrical circuits and conductor transmission lines was addressed by several researchers. This analysis serves as a smooth introduction to the basic concepts involved in adjoint analysis of high-frequency structures. The same theorem is extended to high-frequency electromagnetic simulations as will be illustrated in the following chapters. We illustrate the theory presented in this chapter with circuit examples.

Chapter Contents:

  • 1.1 Introduction
  • 1.2 Finite difference approximations
  • 1.3 Adjoint sensitivity analysis of linear systems
  • References

Inspec keywords: network analysis; finite difference methods; sensitivity analysis

Other keywords: BFD; adjoint sensitivity formulation; central finite differences; backward finite differences; derivative estimation; high-frequency electromagnetic simulations; electrical circuits; FFD; forward finite differences; CFD; sensitivity analysis approaches; conductor transmission lines

Subjects: Differential equations (numerical analysis); General circuit analysis and synthesis methods

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