# Parametric Electronics

## An Introduction

Book

Part of the Springer Series in Electrophysics book series (SSEP, volume 6)

1. Front Matter
Pages I-XI
2. Karl-Heinz Löcherer, Claus-Dieter Brandt
Pages 1-11
3. Karl-Heinz Löcherer, Claus-Dieter Brandt
Pages 12-62
4. Karl-Heinz Löcherer, Claus-Dieter Brandt
Pages 63-67
5. Karl-Heinz Löcherer, Claus-Dieter Brandt
Pages 68-92
6. Karl-Heinz Löcherer, Claus-Dieter Brandt
Pages 93-158
7. Karl-Heinz Löcherer, Claus-Dieter Brandt
Pages 159-202
8. Karl-Heinz Löcherer, Claus-Dieter Brandt
Pages 203-218
9. Karl-Heinz Löcherer, Claus-Dieter Brandt
Pages 219-275
10. Karl-Heinz Löcherer, Claus-Dieter Brandt
Pages 276-295
11. Back Matter
Pages 296-330

### Introduction

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.

### Keywords

Kapazitätsvariationsdiode Parametrischer Verstärker circuit electronics microwave

#### Authors and affiliations

1. 1.Lehrstuhl und Institut für HochfrequenztechnikTechnische Universität HannoverHannover 1Fed. Rep. of Germany

### Bibliographic information

• Book Title Parametric Electronics
• Book Subtitle An Introduction
• Authors K.-H. Löcherer
C.-D. Brandt
• Series Title Springer Series in Electrophysics
• DOI https://doi.org/10.1007/978-3-642-67937-7
• Copyright Information Springer-Verlag Berlin Heidelberg 1982
• Publisher Name Springer, Berlin, Heidelberg
• eBook Packages
• Hardcover ISBN 978-3-540-10514-5
• Softcover ISBN 978-3-642-67939-1
• eBook ISBN 978-3-642-67937-7
• Series ISSN 0172-5734
• Edition Number 1
• Number of Pages XII, 330
• Number of Illustrations 0 b/w illustrations, 0 illustrations in colour
• Topics
• Buy this book on publisher's site