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Ultra Wideband (UWB) communications are poised to enable short-range applications, such as remote health monitoring (e-health) and home or office automation. Sensor networks are also suitable candidates for UWB since the low radiated power of the UWB transmitter enables low DC power consumption, yielding long battery life and the possibility to use energy scavenging. Size and cost constraints require a low-complexity approach that allows multiple users to share the same RF bandwidth, and offers robustness to interference, frequency-selective multipath and antenna mismatch. Wideband FM Techniques for Low-Power Wireless Communications presents research and applications that have taken place in UWB Communications over the past years. This book is being published posthumously in agreement with the authors' former colleagues from both the Swiss Center for Electronics and Microtechnology (CSEM) and Delft University of Technology in The Netherlands.
John F.M. Gerrits
Foreword: John R. Long Foreword: Cees J.M. Lanting Acknowledgments List of Figures List of Tables List of Abbreviations List of Symbols 1 Introduction 2 Principles and System Design of the Frequency Modulated UWB Radio 3 Performance of Frequency Modulated UWB 4 FM-UWB Transmitter Implementation 5 FM-UWB Receiver Implementation 6 Measured Performance of FM-UWB 7 Conclusions Appendix A Power Spectral Density for FSK and BPSK Subcarrier Modulation Schemes Appendix B Influence of RF Frequency Notch on Subcarrier Level Appendix C Detailed Schematics of Wideband FM Demodulator Appendix D Approximation of Small-signal Gain of Hyperbolic Tangent Non-linearity List of Publications Summary Index About the Author
