High Frequency Communication and Sensing
High Frequency Communication and Sensing

Author: Ahmet Tekin

Publisher: CRC Press

Published: 2018-09-03

Total Pages: 152

ISBN-13: 1482207125

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High Frequency Communication and Sensing: Traveling-Wave Techniques introduces novel traveling wave circuit techniques to boost the performance of high-speed circuits in standard low-cost production technologies, like complementary metal oxide semiconductor (CMOS). A valuable resource for experienced analog/radio frequency (RF) circuit designers as well as undergraduate-level microelectronics researchers, this book: Explains the basics of high-speed signaling, such as transmission lines, distributed signaling, impedance matching, and other common practical RF background material Promotes a dual-loop coupled traveling wave oscillator topology, the trigger mode distributed wave oscillator, as a high-frequency multiphase signal source Introduces a force-based starter mechanism for dual-loop, even-symmetry, multiphase traveling wave oscillators, presenting a single-loop version as a force mode distributed wave antenna (FMDWA) Describes higher-frequency, passive inductive, and quarter-wave-length-based pumped distributed wave oscillators (PDWOs) Examines phased-array transceiver architectures and front-end circuits in detail, along with distributed oscillator topologies Devotes a chapter to THz sensing, illustrating a unique method of traveling wave frequency multiplication and power combining Discusses various data converter topologies, such as digital-to-analog converters (DACs), analog-to-digital converters (ADCs), and GHz-bandwidth sigma-delta modulators Covers critical circuits including phase rotators and interpolators, phase shifters, phase-locked loops (PLLs), delay-locked loops (DLLs), and more It is a significantly challenging task to generate and distribute high-speed clocks. Multiphase low-speed clocks with sharp transition are proposed to be a better option to accommodate the desired timing resolution. High Frequency Communication and Sensing: Traveling-Wave Techniques provides new horizons in the quest for greater speed and performance.

Modern HF Signal Detection and Direction Finding
Modern HF Signal Detection and Direction Finding

Author: Jay R. Sklar

Publisher: MIT Press

Published: 2018-09-25

Total Pages: 369

ISBN-13: 0262038293

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Detailed descriptions of detection, direction-finding, and signal-estimation methods, using consistent formalisms and notation, emphasizing HF antenna array sensing applications. Adaptive antenna array technology encompasses many powerful interference suppression approaches that exploit spatial differences among signals reaching a radio receiver system. Today, worldwide propagation phenomenology occurring in the High Frequency (HF) radio regime has made such interference common. In this book, Jay Sklar, a longtime researcher at MIT Lincoln Laboratory, presents detailed descriptions of detection, direction-finding, and signal-estimation methods applicable at HF, using consistent formalisms and notation. Modern electronic system technology has made many of these techniques affordable and practical; the goal of the book is to offer practicing engineers a comprehensive and self-contained reference that will encourage more widespread application of these approaches. The book is based on the author's thirty years of managing MIT Lincoln Laboratory work on the application of adaptive antenna array technologies to the sensing of HF communication signals. After an overview of HF propagation phenomenology, communication signal formats, and HF receiver architectural approaches, Sklar describes the HF propagation environment in more detail; introduces important modulation approaches and signaling protocols used at HF; discusses HF receiver system architectural features; and addresses signal processor architecture and its implementation. He then presents the technical foundation for the book: the vector model for a signal received at an adaptive array antenna. He follows this with discussions of actual signal processing techniques for detection and direction finding, including specific direction-finding algorithms; geolocation techniques; and signal estimation.

A Strategy for Active Remote Sensing Amid Increased Demand for Radio Spectrum
A Strategy for Active Remote Sensing Amid Increased Demand for Radio Spectrum

Author: National Academies of Sciences, Engineering, and Medicine

Publisher: National Academies Press

Published: 2015-09-21

Total Pages: 254

ISBN-13: 0309373085

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Active remote sensing is the principal tool used to study and to predict short- and long-term changes in the environment of Earth - the atmosphere, the oceans and the land surfaces - as well as the near space environment of Earth. All of these measurements are essential to understanding terrestrial weather, climate change, space weather hazards, and threats from asteroids. Active remote sensing measurements are of inestimable benefit to society, as we pursue the development of a technological civilization that is economically viable, and seek to maintain the quality of our life. A Strategy for Active Remote Sensing Amid Increased Demand for Spectrum describes the threats, both current and future, to the effective use of the electromagnetic spectrum required for active remote sensing. This report offers specific recommendations for protecting and making effective use of the spectrum required for active remote sensing.

Radio Engineering for Wireless Communication and Sensor Applications
Radio Engineering for Wireless Communication and Sensor Applications

Author: Antti V. Räisänen

Publisher: Artech House

Published: 2003

Total Pages: 424

ISBN-13: 9781580536691

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Covering a wide range of application areas, from wireless communications and navigation, to sensors and radar, this practical resource offers you the first comprehensive, multidisciplinary overview of radio engineering. You learn important techniques to help you with the generation, control, detection and utilization of radio waves, and find detailed guidance in radio link, amplifier, and antenna design. The book approaches relevant problems from both electromagnetic theory based on MaxwellOCOs equations and circuit theory based on KirchoffOCOs and OhmOCOs laws, including brief introductions to each theory."

Phased Arrays for Radio Astronomy, Remote Sensing, and Satellite Communications
Phased Arrays for Radio Astronomy, Remote Sensing, and Satellite Communications

Author: Karl F. Warnick

Publisher: Cambridge University Press

Published: 2018-07-26

Total Pages: 471

ISBN-13: 1108423922

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Discover a modern approach to the analysis, modeling and design of high sensitivity phased arrays. Network theory, numerical methods and computational electromagnetic simulation techniques are uniquely combined to enable full system analysis and design optimization. Beamforming and array signal processing theory are integrated into the treatment from the start. Digital signal processing methods such as polyphase filtering and RFI mitigation are described, along with technologies for real-time hardware implementation. Key concepts from interferometric imaging used in radio telescopes are also considered. A basic development of theory and modeling techniques is accompanied by problem sets that guide readers in developing modeling codes that retain the simplicity of the classical array factor method while incorporating mutual coupling effects and interactions between elements. Combining current research trends with pedagogical material suitable for a first-year graduate course, this is an invaluable resource for students, teachers, researchers, and practicing RF/microwave and antenna design engineers.

Ship Sensors
Ship Sensors

Author: R. Glenn Wright

Publisher: Taylor & Francis

Published: 2024-02-29

Total Pages: 267

ISBN-13: 1003855245

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When combined with artificial intelligence, advanced computing architectures and enhanced communications, sensor technologies can monitor vessel performance and the adjacent environment to detect conditions that may hinder voyage completion. This book provides insight into the present and future of sensor architectures and configurations that can enhance vessel performance and further improve the safety of navigation. It covers topics such as traditional and expanded sensor functions in engineering and navigation, as well as new sensor capabilities that can provide greater insight into vessel behavior and performance and enhance awareness of passenger, crew and other human activities. Chapters offer background information on typical legacy vessel sensor configurations and current International Maritime Organization (IMO) requirements for onboard sensors and future regulatory trends before discussing modern sensors and current- generation “smart” sensors that provide enhanced situational awareness to watchstanders. A vision of next- generation sensors currently being investigated for shipboard use is provided along with long- term trends in quantum sensing and computing that promise radical change across a wide variety of vessel functions. Insight is also given into cybersecurity factors so essential to all sensor systems. Ship Sensors: Conventional, Unmanned and Autonomous is ideal for professional seafarers, maritime academics and university students, and developers of maritime sensors and systems.

Radio-Frequency and Microwave Communication Circuits
Radio-Frequency and Microwave Communication Circuits

Author: Devendra K. Misra

Publisher: John Wiley & Sons

Published: 2012-04-12

Total Pages: 632

ISBN-13: 0471653772

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The products that drive the wireless communication industry, such as cell phones and pagers, employ circuits that operate at radio and microwave frequencies. Following on from a highly successful first edition, the second edition provides readers with a detailed introduction to RF and microwave circuits. Throughout, examples from real-world devices and engineering problems are used to great effect to illustrate circuit concepts. * Takes a top-down approach, describing circuits in the overall context of communication systems. * Presents expanded coverage of waveguides and FT mixers. * Discusses new areas such as oscillators design and digital communication. *An Instructor's Manual presenting detailed solutions to all the problems in the book is available from the Wiley editorial department.

Wireless Radio-frequency Standards and System Design
Wireless Radio-frequency Standards and System Design

Author: Gianluca Cornetta

Publisher:

Published: 2012-01-01

Total Pages: 344

ISBN-13: 9781466600850

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"This book provides perspectives on radio-frequency circuit and systems design, covering recent topics and developments in the RF area, exploring topics such as LNA linearization, behavioral modeling and co-simulation of analog and mixed-signal complex blocks for RF applications, integrated passive devices for RF-ICs and baseband design techniques and wireless standards"--

Radio Frequency Identification and Sensors
Radio Frequency Identification and Sensors

Author: Etienne Perret

Publisher: John Wiley & Sons

Published: 2014-12-04

Total Pages: 254

ISBN-13: 1119054087

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This book deals with the field of identification and sensors, more precisely the possibility of collecting information remotely with RF waves (RFID). The book introduces the technology of chipless RFID starting from classical RFID and barcode, and explores the field of identification and sensors without wire, without batteries, without chip, and with tags that can even be printed on paper. A technique for automatic design of UHF RFID tags is presented , aiming at making the tags as insensitive as possible to the environment (with the ability to increase the reading range reliability), or, conversely, making them sensitive in order to produce sensors, meanwhile keeping their unique ID. The RFID advantages are discussed, along with its numerous features, and comparisons with the barcode technology are presented. After that, the new chipless RFID technology is introduced on the basis of the previous conclusions. Original technological approaches are introduced and discussed in order to demonstrate the practical and economic potential of the chipless technology.