Preface. Introduction, Fundamental Concepts, and Definitions. Solid-State Device Modeling. Harmonic-Balance analysis. Volterra-Series and Power-Series Analysis. Balanced Circuits. Diode Mixers. Diode Frequency Multipliers. Small-Signal Amplifiers. Power Amplifiers. Active Frequency Multipliers. Active Mixers. Oscillators. Index.

Nonlinear Microwave and RF Circuits

The authors present a survey of modern nonlinear CAD (computer-aided design) techniques as applied to the specific field of microwave circuits. A number of fundamental aspects of the nonlinear CAD problem, including simulation, optimization, intermodulation, frequency conversion, stability, and noise, are addressed and developed. For each one it is shown that either well-established CAD solutions are available, or at least a solution approach suitable for implementation in a general-purpose CAD environment can be outlined. Also, the discussion shows that the various subjects are not just separate items, but rather can be chained in a strictly logical sequence. Finally, an elementary treatment of vector processing is given, to show that supercomputers can handle the involved large-size numerical problems efficiently. >

State of the art and present trends in nonlinear microwave CAD techniques

The authors present details of the generalized power series technique for the analysis of analog nonlinear circuits. The method uses generalized power series descriptions of the nonlinear elements and a spectral balance techniques to operate entirely in the frequency domain. It is therefore suited to the analysis of analog nonlinear circuits with large-signal multifrequency excitation of arbitrary frequency separation. The analysis of a low-frequency mixer is used here as a vehicle to illustrate the concepts of large-signal frequency-domain analysis and the generalized power series analysis technique. >

Frequency-domain nonlinear circuit analysis using generalized power series

Illustration par trois exemples: doubleur de frequence a transistor a effet de champ, conception d'un amplificateur de puissance avec reduction de la distorsion d'intermodulation, amplificateur limiteur

Nonlinear circuit design using the modified harmonic balance algorithm

A unified theoretical concept for noise analysis in analog and microwave circuits is introduced. Based on the adjoint system approach an analysis technique for general-purpose CAD (computer-aided design) applications is presented. The algorithm is easy to implement into existing CAD tools, and exploits the advantages of sparse matrix techniques. As an example, in a linear SPICE-analysis of an amplifier, only an additional forward and backward substitution for each port, two 2*2 matrix multiplications for each transistor, and the outer product of two two-dimensional vectors for a resistor are needed. >

A unified framework for computer-aided noise analysis of linear and nonlinear microwave circuits

Harmonic balance is a powerful technique for the simulation of mildly nonlinear microwave circuits. This technique has had limited application for tie analysis of almost-periodic circuits, such as mixers, due to the difficulties of transforming waveforms from the time domain to the frequency domain and vice versa. In this paper, a new Fourier transform algorithm for almost-periodic functions (APFT) is developed that is both efficient and accurate. Unlike previous attempts to solve this problem, the new afgorithm does not constmin the input frequencies and uses the theoretically minimum number of time points.

A. Sangiovanni-Vincentelli

Papers

An Almost-Periodic Fourier Transform for Use with Harmonic Balance