Mostrando 81 - 100 Resultados de 3,426 Para Buscar '"Frequency"', tiempo de consulta: 0.07s Limitar resultados
  1. 81
    Publicado 2017
    Tabla de Contenidos: “…Front Cover -- Radio-Frequency Digital-to-Analog Converters: Implementation in Nanoscale CMOS -- Copyright -- Contents -- Preface -- Acknowledgment -- Acronyms -- Chapter 1: Introduction -- 1.1 The Conventional RF Radio -- 1.2 Motivation -- 1.3 The Book Objectives -- 1.3.1 System Simulation of WCDMA Baseband Data -- 1.3.2 Some Important Figures-of-Merit in RF Transmitters -- 1.4 Analog Versus Digital RF Transmitters -- 1.5 Analog-Intensive RF Transmitters -- 1.6 Digitally Intensive RF Transmitters -- 1.7 New Paradigm of RF Design in Nanometer-Scale CMOS -- 1.8 All-Digital Polar Transmitter -- 1.9 All-Digital I/Q Transmitter -- 1.10 Conclusion -- 1.11 Book Outline -- Chapter 2: Digital polar transmitter architecture -- 2.1 Introduction to Narrowband Polar Transmitters -- 2.1.1 Motivation -- 2.1.1.1 Small-signal polar transmitter -- 2.1.1.2 Motivation for the digitally intensive amplitude path -- 2.1.2 Contrast With Conventional Analog Approaches -- 2.2 Overview of the RFDAC-Based Polar Transmitter Architecture -- 2.2.1 Overview of the DPA -- 2.2.2 DCO Operating Frequency and CKV Clock -- 2.3 Details of Phase Modulation -- 2.4 Design Challenges for the Small-Signal Polar Transmitter -- 2.4.1 DCO Phase Noise -- 2.4.2 DCO Pulling and Pushing -- 2.4.3 VGA/DPA Nonlinearity -- 2.4.4 Amplitude-Phase Path Delay Mismatch -- 2.4.5 Amplitude-Phase Path Transfer Function Mismatch -- 2.4.6 Amplitude Path DC Offset -- 2.4.7 Amplitude Path Dynamic Range Limitations -- 2.4.8 Amplitude Path DAC Mismatches -- 2.4.9 Additional Distortions in the DPA (DAC/Mixer) -- Chapter 3: Digital baseband of the polar transmitter -- 3.1 Overview of the TX Digital Baseband -- 3.1.1 Pulse Shaping Filter -- 3.1.2 Resampler -- 3.1.2.1 Need for a resampler -- 3.1.2.2 Implementation -- 3.1.3 CORDIC -- 3.2 Predistortion Module -- 3.2.1 Overview -- 3.2.2 Principle of Operation…”
    Libro electrónico
  2. 82
    por Egan, William F.
    Publicado 2011
    Tabla de Contenidos: “…Architectures -- Simulation -- Diophantine Synthesizer -- Operation at Extreme Bandwidths -- All-Digital Frequency Synthesizers -- Appendix A: All Digital -- Appendix C: Fractional Cancellation -- Appendix E: Excess PPSD -- Appendix F: References to -- Appendix G: Using Gsmpl -- Appendix H: Sample-and-Hold Circuit -- Appendix L: Loop Response -- Appendix M: Mash PPSD -- Appendix N: Sampled Noise -- Appendix O: Oscillator Spectrums -- Appendix P: Phase Detectors -- Appendix Q: Quantization PPSD -- Appendix R: Reference Frequency Spurs -- Appendix S: Spectrum Analysis -- Appendix T: Toolboxes -- Appendix U: Noise Produced by Charge Pump Current Unbalance (Mismatch) -- Appendix W: Getting Files from the Wiley Internet Site -- Appendix X: Some Tables -- End Notes -- References -- Index…”
    Libro electrónico
  3. 83
    Publicado 1994
    Tabla de Contenidos: “…Low-Frequency Sound and Marine Mammals -- Copyright -- Preface -- Acknowledgments -- Contents -- Executive Summary -- LIMITATIONS OF CURRENT KNOWLEDGE -- CHANGES PROPOSED IN REGULATORY STRUCTURE -- RECOMMENDED RESEARCH -- 1 A Review of Current Knowledge -- CHANGES IN OCEAN SOUNDS AND POTENTIAL EFFECTS ON MARINE MAMMALS -- EVALUATING NOISE INTERFERENCE -- Transmission Loss of Sound in the Ocean -- Ambient Noise Level of the Sea -- Acoustic Characteristics of Marine Mammal Hearing Organs -- THE NEED FOR ADDITIONAL RESEARCH -- ORIGINS AND DRAWBACKS OF THE "120-DB CRITERION -- REFERENCES -- 2 Regulatory Barriers and Possible Alternatives -- THE MARINE MAMMAL PROTECTION ACT AND ITS INTERPRETATION -- HARASSMENT OF MARINE MAMMALS -- PERMITTING IMPLICATIONS FOR RESEARCH ACTIVITY -- Scientific Research Permits -- Small Incidental Take (SIT) Authorizations -- MAGNITUDE OF POTENTIAL NOISE POLLUTION FROM OCEANIC ACOUSTIC STUDIES -- PROPOSED CHANGES IN THE REGULATORY STRUCTURE -- Using a New Mechanism to Regulate Scientific "Takes -- Utilization of the IACUC System -- Streamlining Existing Regulations -- SUMMARY OF RECOMMENDED CHANGES -- REFERENCES -- 3 Topics for Future Research -- BEHAVIOR OF MARINE MAMMALS IN THE WILD -- Natural, Ecologically Important Signals -- Habituation to Repeated Human-made Sounds -- Differential Responses of Migrating Whales to Various Human-made Sounds -- Responses of Deep-diving Marine Mammals to Low-frequency Sounds -- STRUCTURE AND FUNCTION OF THE AUDITORY SYSTEM -- Basic Studies of Audiometry -- Measurements on Ensnared or Beached Marine Mammals -- Replication of Data -- Temporary Threshold Shift -- Basic Studies of the Anatomy and Physiology of the Auditory System -- EFFECTS OF LOW-FREQUENCY SOUNDS ON THE FOOD CHAIN -- DEVELOPMENT AND APPLICATION OF MEASUREMENT TECHNIQUES -- Tag Development…”
    Libro electrónico
  4. 84
  5. 85
    Publicado 2004
    Materias:
    Libro electrónico
  6. 86
    Publicado 2022
    “…Vacuum electron devices at frequencies of millimeter waves and terahertz play highly important roles in the modern high-data rate and broadband communication systems, high-resolution detection and imaging, medical diagnostics, magnetically confined nuclear fusion, etc. …”
    Libro electrónico
  7. 87
    por Mulligan, Casey B.
    Publicado 2001
    Libro
  8. 88
    Publicado 1995
    Libro
  9. 89
    por Leonov, G.A
    Publicado 1996
    Libro
  10. 90
    por Craninckx, J.
    Publicado 1998
    Libro
  11. 91
    por Hagen, Jon B.
    Publicado 1996
    Libro
  12. 92
    Publicado 1996
    Libro
  13. 93
    por Bose, Bimal K.
    Publicado 1997
    Libro
  14. 94
    por Blevins, Robert D.
    Publicado 1979
    Libro
  15. 95
    Libro
  16. 96
    Libro
  17. 97
    por Paret, Dominique
    Publicado 2009
    Libro
  18. 98
    por Chryssis, George
    Publicado 1984
    Libro
  19. 99
    por Nelson, Charles
    Publicado 2008
    Libro
  20. 100
    por Grivet, P.
    Publicado 1969
    Libro