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Parametric Electronics: An Introduction - K. -H. Löcherer,C. -D. Brandt

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2011-12-10
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In this chapter, first the parametric principle is illustrated by two simple examples, one mechanical and one electrical. Then the realization of time­ varying reactances is explained, followed by a short history of "parametric electronics". This survey demonstrates the importance of parametric circuits in the field of low-noise microwave electronics as well as explains the organization of this book. 1.1 Th ... Visas aprašymas

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In this chapter, first the parametric principle is illustrated by two simple examples, one mechanical and one electrical. Then the realization of time­ varying reactances is explained, followed by a short history of "parametric electronics". This survey demonstrates the importance of parametric circuits in the field of low-noise microwave electronics as well as explains the organization of this book. 1.1 The Parametric Principle An oscillating system comprising a single or several time-varying energy­ storing elements is called a parametric system; usually the variations are harmonic functions of time. Everybody knows one example of a mechanical parametric system from his childhood, namely, a swing. Therefore, we will start with this example though as it turns out, a swing is a rather compli­ cated parametric system. Fortunately, the electrical parametric systems, which form the object of this book, are simpler. Figure 1.1 shows such a swing. If it is removed from its equilibrium position and the child stands on it in a fixed attitude, the swing oscillates with a certain amplitude, the magnitude of which decreases with time due to the mechanical friction of the system. To increase the amplitude of oscil­ lation, the child changes positions during swinging: it crouches and straightens in a certain way twice during one cycle of the swing.

Daugiau informacijos

Autorius K. -H. Löcherer, C. -D. Brandt
Leidėjas Springer Berlin Heidelberg
Series Springer Series in Electronics and Photonics
Išleidimo metai 2011
Viršelio tipas Minkšti viršeliai
EAN 9783642679391
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120,11 € 184,78 €