Describes the outphasing approach to amplifier linearization that uses power-combining techniques to create a linear output waveform from two nonlinear input sources, and presents recent advances in resolving the limitations caused by the strict matching requirements between the two amplifiers and the microwave power wasted in the power-combing network. The authors discuss the linearity performance of outphasing amplifier systems, correction schemes based on training vectors, and power recycling in outphasing amplifiers. Zhang is an engineer with Qualcomm, while Larson and Asbeck are affiliated with the University of California, San Diego. Annotation (c)2003 Book News, Inc., Portland, OR (booknews.com).
Overcoming the agility limitations of conventional frequency synthesizers in multi-band OFDM ultra wideband is a key research goal in digital technology. This volume outlines a frequency plan that can generate all the required frequencies from a single fixed frequency, able to implement center frequencies with no more than two levels of SSB mixing. It recognizes the need for future synthesizers to bypass on-chip inductors and operate at low voltages to enable the increased integration and efficiency of networked appliances. The author examines in depth the architecture of the dividers that generate the necessary frequencies from a single base frequency and are capable of establishing a fractional division ratio. Presenting the first CMOS inductorless single PLL 14-band frequency synthesizer for MB-OFDMUWB makes this volume a key addition to the literature, and with the synthesizer capable of arbitrary band-hopping in less than two nanoseconds, it operates well within the desired range on a 1.2-volt power supply. The author’s close analysis of the operation, stability, and phase noise of injection-locked regenerative frequency dividers will provide researchers and technicians with much food for developmental thought.
With the full publication of the Dead Sea Scrolls come major changes in our understanding of these fascinating texts and their significance for the study of the history of Judaism and Christianity. One of the most significant changes that one cannot study Qumran without Jerusalem nor Jerusalem without Qumran is explored in this important volume. / Although the Scrolls preserve the peculiar ideology of the Qumran sect, much of the material also represents the common beliefs and practices of the Judaism of the time. Here Lawrence Schiffman mines these incredible documents to reveal their significance for the reconstruction of the history of Judaism. His investigation brings to life a period of immense significance for the history of the Western world.
Already before its publication, it was clear that the Temple Scroll represented a major contribution to the history of Jewish law in Late Antiquity. The present volume brings together the author’s studies on this important scroll. He has sought to uncover the hermeneutics of the Zadokite/Sadducean legal system and to compare and contrast it with other texts of its own type as well as with those in rabbinic literature preserving the Pharisaic-rabbinic approach.
The last 20 years has seen a rapid increase in infectious diseases, particularly those that are termed "emerging diseases" such as SARS, "neglected diseases" such as malaria and those that are deemed biothreats such as anthrax. It is well-recognized that the most effective modality for preventing infectious diseases is vaccination. This book provides researchers with a better understanding of what is currently known about these diseases, including whether there is a vaccine available or under development. It also informs readers of the key issues in development of a vaccine for each disease. Provides a comprehensive treatise of the agents that are responsible for emerging and neglected diseases and those that can be used as biothreats Includes the processes such as the vaccine development pathway, vaccine manufacturing and regulatory issues that are critical to the generation of these vaccines to the marketplace Each chapter will include a map of the world showing where that particular disease is naturally found
This Comparative Handbook surveys the Judaic environment of the Gospels of Matthew and Luke. Analogies are traced with the Pseudepigrapha (together with Philo and Josephus), discoveries related to Qumran, and Rabbinic Literature (inclusive of the Targumim).
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