## The Science of Radio: with MATLAB® and Electronics Workbench® DemonstrationsThe Science of Radio explains the working and charts the development of the ordinary AM radio receiver, which has become an integral part of our lives in the 80 years since its invention. As well as showing the reader the growth of technology in this century, the story of AM radio can provide a unique insight into the basics of electrical engineering, making the primary concepts and applications visual and comprehensible. Taking a "top down" approach to the subject, Nahin starts with a broad overview of radio as a sociological and technological phenomenon, then describes specific advances in research that made radio possible, moving through deeper levels of technical detail as the story progresses. Readers will see how various concepts and theories are combined to achieve specific practical results. And the book's "just in time" method of introducing mathematical and physical theory only as needed to understand a topic, helps readers gain a firm grasp of often elusive material. By focusing specifically on the workings of AM radio, The Science of Radio offers both a fascinating history of radio as an information and entertainment medium and a practical, applications-oriented introduction to electrical engineering. This second edition, written the same witty and accessible style as the first, also includes illustrative examples based on the popular MATLAB and Electronics Workbench programs now commonly used in engineering courses, as well as new technical material on differential amplifiers, more end-of-chapters problems, and additional historical discussion. About the author Paul J. Nahin is Professor of Electrical Engineering at the University of New Hampshire, and is the author of Oliver Heaviside: Sage In Solitude (IEEE Press); Time Machines: Time Travel In Physics, Metaphysics And Science Fiction, (AIP Press); and An Imaginary Tale; The Story Of The Square Root Of Minus One, (Princeton University Press). |

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It is fine text book, but with some historic inaccuracies. According to my opinion, some of the information in this book is deliberately manipulated and changed in order to obfuscate real personalities and hide some correlated historic events.

One example: on the page 262 Nikola Tesla is described in the list of people in the picture as being John Carson

http://www.talk-polywell.org/bb/viewtopic.php?t=293&sid=fecbd55ac68f4a7673a087f9daebe1c7

### Contents

PROLOGUE | xxxi |

Mostly History and a Little Math | 1 |

1 Solution to an Old Problem | 3 |

2 Preradio History of Radio Waves | 13 |

3 Antennas as Launchers and Interceptors of Electromagnetic Waves | 26 |

4 Early Radio | 37 |

5 Receiving Spark Transmitter Signals | 53 |

6 Mathematics of AM Sidebands | 66 |

18 Multiplying by Sampling and Filtering | 244 |

Mathematics of Unmultiplying | 251 |

19 Synchronous Demodulation and its Problems | 253 |

20 Analytic Signals and SingleSideband Radio | 261 |

21 Denouement | 278 |

22 Epilogue | 294 |

Technical Appendices | 313 |

Complex Exponentials | 315 |

7 First Continuous Waves and the Heterodyne Concept | 75 |

8 Birth of Electronics | 102 |

Mostly Math and a Little History | 119 |

9 Fourier Series and Their Physical Meaning | 121 |

10 Convergence in Energy of the Fourier Series | 136 |

11 Radio Spectrum of a SparkGap Transmitter | 156 |

12 Fourier Integral Theorem and the Continuous Spectrum | 168 |

13 Physical Meaning of the Fourier Transform | 179 |

in Time and Frequency | 187 |

15 Convolution Theorems Frequency Shifts and Causal Time Signals | 212 |

Nonlinear Circuits for Multiplication | 233 |

16 Multiplying by Squaring and Filtering | 235 |

17 Squaring and Multiplying with Matched Nonlinearities | 241 |

What Is and Is Not a Linear TimeInvariant System Superposition | 328 |

TwoTerminal Components Kirch hoffs Circuit Laws Magnetic Coupling Complex Impedances ac Amplitude and Phase Responses Power Energy and... | 334 |

Thevenins and Nortons Theorems | 368 |

Resonance in Electrical Circuits | 377 |

Differential and Operational Amplifiers | 390 |

Reversing the Order of Integration on Double Integrals and Differentiating an Integral | 406 |

The Fourier Integral Theorem How Mathematicians Dolt | 429 |

The Hilbert Integral Transform | 436 |

Table of Fourier Transform Pairs and Theorems | 450 |

Last Words | 452 |

455 | |

461 | |

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### Common terms and phrases

actually ampere amplifier amplitude antenna Appendix bandpass filter bandwidth baseband baseband signal battery broadcast calculate called capacitor carrier frequency Chapter charge circuit of Figure coil complex components constant cos(a>ct derived detector diff-amp differential equation diode DSB-SC early radio electrical engineering electromagnetic Electronics Workbench electrons energy envelope detector Euler Euler's identity example finite Fourier series Fourier transform gyrator H(ja heterodyne Hilbert transform Hint impedance impulse inductor infinite input integral integrand interval J-oo Kirchhoff's linear Marconi mathematical mathematician MATLAB maximum Maxwell Maxwell's multiplier negative nonlinear oscillations output Parseval's theorem period phase shift physicists physics problem radiation receiver resistance resistor resonant result shown in Figure sideband simply sinusoidal spark spark-gap transmitters spectrum station superheterodyne term terminals theorem tion transmitter triode tuned vacuum tube variable vector voltage drop waves wire wireless write zero