FMUWB Transceivers for Autonomous Wireless Systems

Description

Significant research effort has been devoted to the study and realization of autonomous wireless systems for wireless sensor and personal-area networking, the internet of things, and machine-to-machine communications. Low-power RF integrated circuits, an energy harvester and a power management circuit are fundamental elements of these systems. An FM-UWB Transceiver for Autonomous Wireless Systems presents state-of-the-art developments in low-power FM-UWB transceiver realizations. The design, performance and implementation of prototype transceivers in CMOS technology are presented. A working hardware realization of an autonomous node that includes a prototype power management circuit is also proposed and detailed in this book.Technical topics include: Low-complexity FM-UWB modulation schemesLow-power FM-UWB transceiver prototypes in CMOS technologyCMOS on-chip digital calibration techniquesSolar power harvester and power management in CMOS for low-power RF circuitsAn FM-UWB Transceiver for Autonomous Wireless Systems is an ideal text and reference for engineers working in wireless communication industries, as well as academic staff and graduate students engaged in electrical engineering and communication systems research. Cover Half Title Series Page Title Page Copyright Page Table of Contents Preface List of Figures List of Tables List of Abbreviations 1: Introduction 1.1 Motivation 1.2 Design Challenges and Overview 1.3 Outline of this Book References 2: Technical Background 2.1 Introduction 2.2 Digital Modulation 2.3 Ultra-Wideband (UWB) 2.4 FM-UWB Modulation Scheme 2.5 Specifications for FM-UWB Transceiver 2.6 Conventional FM-UWB Transceiver 2.7 Survey of Low-Power CMOS Circuits 2.7.1 Sub-Threshold CMOS 2.7.2 Gain Boosting or Q-Enhancement Technique 2.7.3 Maximum Voltage Supply Utilization 2.7.4 Adaptive Power Control 2.7.5 Low Complexity Transceiver Architecture 2.8 Summary References 3: FM-UWB Transmitter 3.1 Introduction 3.2 FM-UWB Transmitter Circuit Designs 3.2.1 RF Carrier Oscillator 3.2.2 Power Amplifier 3.2.3 Sub-Carrier Oscillator 3.2.4 Transconductance Amplifier 3.2.5 SAR-FLL Calibration 3.2.6 Voltage and Current References 3.3 Experimental Measurement 3.4 Summary and Conclusions References 4: FM-UWB Receiver 4.1 Introduction 4.2 Proposed FM-UWB Receiver 4.3 Circuit Designs 4.3.1 Regenerative Preamplifier and Filter 4.3.2 Envelope Detector and IF Amplifier 4.4 Measurement Results 4.5 Conclusion and Summary References 5: FM-UWB Transceiver 5.1 Introduction 5.2 Transceiver Architecture 5.3 Transceiver Circuit Design 5.3.1 RF Current-Controlled Ring Oscillator 5.3.2 Frequency Tripler and Power Amplifier 5.3.3 Transconductance Amplifier 5.3.4 Regenerative Amplifier and Bandpass Filter 5.3.5 Envelope Detector, IF-Amplifier, and Limiter 5.3.6 FSK Demodulator 5.3.7 Positive Feedback Calibration 5.3.8 Frequency Calibration 5.4 Measurement Results 5.5 Conclusions References 6: Power Management for FM-UWB 6.1 Introduction 6.2 Power Management Background 6.2.1 Solar Cell 6.2.2 Battery 6.2.3 Supercapacitor 6.2.4 DC-DC Conve 6.3 Power Management Circuit Design 6.3.1 Switched-Capacitor Charge Pump (SC-CP) 6.3.2 Low Drop-Out (LDO) Regulator 6.3.3 Switched-Capacitor DC Converter (SC-DC) 6.3.4 Clock Generator 6.3.5 Bias Generator 6.4 Measurement Results 6.4.1 SC-CP Characterization 6.4.2 LDO Characterization 6.4.3 SC-DC Characterization 6.4.4 Power Management Sub-System 6.5 Conclusions References Index About the Authors