附註:Includes bibliographical references and index.
Cover -- Table of Contents -- List of Figures -- List of Tables -- Acknowledgments -- 1. INTRODUCTION -- 1.1 Outline -- 1.2 Choice of Modulation Affects Battery Life -- 1.3 Classes of Modulation -- 1.4 GFSK and GMSK -- 1.5 Coherent Versus Noncoherent Demodulation -- 1.6 Chapter 1 Summary -- 2. ARCHITECTURES -- 2.1 Direct VCO Modulation -- 2.2 Quadrature Modulator -- 2.3 Open Loop Modulation with PLL Tuning -- 2.4 Modulated Fractional ... N Synthesizer -- 2.5 Calibrated Synthesizer Architecture -- 2.6 Chapter 2 Summary -- 3. SYSTEM REQUIREMENTS -- 3.1 Total Phase Error Variance -- 3.2 Chapter 3 Summary -- 4. AUTOMATIC CALIBRATION SYSTEM -- 4.1 PLL Mismatch Model -- 4.2 The Gain Error Detector -- 4.3 Track and Hold Modification to the Error Detector -- 4.4 Simulated Gain Error Detector Performance -- 4.5 Carrier Phase Tracking -- 4.6 Complete Gain Error Detector -- 4.7 Acquisition Range and Digital Coarse Calibration -- 4.8 Application to Other Architectures -- 4.9 Chapter 4 Summary -- 5. IMPLEMENTATION DETAILS -- 5.1 Discrete Prototype -- 5.2 Integrated Circuit Process Technology -- 5.3 RF Phase Quantizer -- 5.4 Digital Building Blocks -- 5.5 Reference Error Filter -- 5.6 Digital Phase Locked Loop and Phase Error Measurement -- 5.7 Gain Control Multiplier and Error Amp -- 5.8 1.8 GHz VCO -- 5.9 Main Synthesizer -- 5.10 S? Modulator -- 5.11 Chapter 5 Summary -- 6. EXPERIMENTAL RESULTS -- 6.1 Discrete Prototype Results -- 6.2 Integrated Circuit Test Environment -- 6.3 Automatic Calibration Results -- 6.4 Power Consumption -- 6.5 VCO performance -- 6.6 RF Phase Quantizer -- 6.7 Summary -- 7. SUMMARY AND CONCLUSIONS -- 7.1 Recommendations for Future Work -- Appendices Tools -- A. 1 Simulation Tools -- A. 2 Test Setup Tools -- A. 3 Typesetting Tools -- A. 4 Miscellaneous.
摘要:In recent years, there has been considerable interest in highly integrated, low power, portable wireless devices. There are three primary areas to be addressed when higher performance and lower power is desired. The first area is the device technology. Scaling of devices has realized steady improvements for many years. The second area is improved circuit design techniques. The final area is at the architectural level. This monograph focuses on the problem of low power GFSK/GMSK modulation and presents an architectural approach for improved performance. The new architecture is a modulated S-D fractional-N frequency synthesizer. The key innovation is an automatic calibration technique, which operates in the background. The availability of the calibration circuit makes high data rate, low power modulation possible. From the Foreword: "The key contribution of the work presented in this monograph is a technique for in service automatic calibration of the modulated frequency synthesizer by ensuring that the digital emphasis filter and analog loop filter characteristics are matched. The automatic calibration circuit operates while the transmitter is in service and compensates for process and temperature variation. GFSK and 4-GFSK modulation was demonstrated at data rates of 2.5 Mb/s and 5 Mb/s respectively at an RF output carrier frequency of 1.8 GHz. ... In addition, he presents some valuable tools for the practicing engineer in this field." by Charles G. Sodini.
