By Allen L. Hollister

Publisher: Scitech Publishing

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In this book, the theory needed to understand wideband amplifier design using the simplest models possible will be developed. This theory will be used to develop algebraic equations that describe particular circuits used in high frequency design so that the reader develops an intuitive understanding of the process and circuit. SPICE and Genesys simulations will be performed to show the accuracy of the algebraic models. By looking at differences between the algebraic equations and the simulations, new algebraic models will be developed that include parameters originally left out of the model. By including these new elements, the algebraic equations provide surprising accuracy while maintaining simplicity and understanding of the circuit.

While the emphasis is on wide-bandwidth (dc to several gigahertz) amplifiers with good transient response, the techniques presented are also quite useful to people doing classic analog design. For example, the same things that cause certain one-transistor amplifiers to oscillate at 5 GHz can also explain the behavior of an op-amp loaded into a capacitor. The term “high frequency” is relative. As such, this book is of interest to anyone doing analog design. Both op-amp IC designers and op-amp users will find the material useful. Other applications include fast digitizers, ADCs, and DACs, as well as the emerging area of UWB radio. Narrow bandwidth (classic RF design) is either similar to or a subset of the techniques presented in this book. As such, classic RF designers will also find the contents of this book useful.