| 書目名稱 | Parametric Electronics | | 副標(biāo)題 | An Introduction | | 編輯 | Karl-Heinz L?cherer,Claus-Dieter Brandt | | 視頻video | http://file.papertrans.cn/742/741164/741164.mp4 | | 叢書名稱 | Springer Series in Electronics and Photonics | | 圖書封面 |  | | 描述 | 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 | | 出版日期 | Book 1982 | | 關(guān)鍵詞 | Kapazit?tsvariationsdiode; Parametrischer Verst?rker; circuit; electronics; microwave | | 版次 | 1 | | doi | https://doi.org/10.1007/978-3-642-67937-7 | | isbn_softcover | 978-3-642-67939-1 | | isbn_ebook | 978-3-642-67937-7Series ISSN 0172-5734 | | issn_series | 0172-5734 | | copyright | Springer-Verlag Berlin Heidelberg 1982 |
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