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Nauroze Syed Abdullah Novel On-Chip Helical Antenna for 77ghz Automotive Radars Nauroze Syed Abdullah Novel On-Chip Helical Antenna for 77ghz Automotive Radars Новинка

Nauroze Syed Abdullah Novel On-Chip Helical Antenna for 77ghz Automotive Radars

Helical antennas have high gain, circular polarization and wide bandwidth characteristics. In this book, novel designs for dielectrically loaded helical antennas are investigated for on-chip 77GHz automotive radar. High substrate losses in the silicon core reduces the antenna gain. Therefore, silicon is etched from the core to lower its effective permittivity and decrease substrate losses. For fabrication of antenna on a wafer-scale level, a low-loss mechanical support is also introduced. As compared to unloaded helical antenna, the novel dielectric core loaded helical antenna has an improvement of 1dBi in maximum gain, 15dBi improvement in front-to-back ratio and 15dB improvement of return loss. The proposed antenna occupies 3.3 and 10 times less chip area than patch and horn antenna, respectively. Furthermore, the performance (in terms of gain, bandwidth for equal footprint size) of proposed antenna is better than previously investigated automotive radar antennas.
Huang Kao-Cheng Modern Lens Antennas for Communications Engineering Huang Kao-Cheng Modern Lens Antennas for Communications Engineering Новинка

Huang Kao-Cheng Modern Lens Antennas for Communications Engineering

10027.35 руб. или Купить в рассрочку!
The aim of this book is to present the modern design principles and analysis of lens antennas. It gives graduates and RF/Microwave professionals the design insights in order to make full use of lens antennas. Why do we want to write a book in lens antennas? Because this topic has not been thoroughly publicized, its importance is underestimated. As antennas play a key role in communication systems, recent development in wireless communications would indeed benefit from the characteristics of lens antennas: low profile, and low cost etc. The major advantages of lens antennas are narrow beamwidth, high gain, low sidelobes and low noise temperature. Their structures can be more compact and weigh less than horn antennas and parabolic antennas. Lens antennas with their quasi-optical characteristics, also have low loss, particularly at near millimeter and submillimeter wavelengths where they have particular advantages. This book systematically conducts advanced and up-to-date treatment of lens antennas.
Qi Luo Circularly Polarized Antennas Qi Luo Circularly Polarized Antennas Новинка

Qi Luo Circularly Polarized Antennas

10429.11 руб. или Купить в рассрочку!
This book presents a comprehensive insight into the design techniques for different types of CP antenna elements and arrays In this book, the authors address a broad range of topics on circularly polarized (CP) antennas. Firstly, it introduces to the reader basic principles, design techniques and characteristics of various types of CP antennas, such as CP patch antennas, CP helix antennas, quadrifilar helix antennas (QHA), printed quadrifilar helix antennas (PQHA), spiral antenna, CP slot antennas, CP dielectric resonator antennas, loop antennas, crossed dipoles, monopoles and CP horns. Advanced designs such as small-size CP antennas, broadband, wideband and ultra-wideband CP antennas are also discussed, as well as multi-band CP antennas and dual CP antennas. The design and analysis of different types of CP array antennas such as broadband CP patch arrays, dual-band CP arrays, CP printed slot arrays, single-band and multi-band CP reflectarrays, high-gain CP waveguide slot antennas, CP dielectric resonator antenna arrays, CP active arrays, millimetre-waveband CP arrays in LTCC, and CP arrays with electronically beam-switching or beam-steering capabilities are described in detail. Case studies are provided to illustrate the design and implementation of CP antennas in practical scenarios such as dual-band Global Navigation Satellite Systems (GNSS) receivers, satellite communication mobile terminals at the S-band, Radio Frequency Identification (RFID) readers at 2.4 GHz, and Ka-band high-speed satellite communication applications. It also includes the detailed designs for a wideband Logarithmic spiral antenna that can operate from 3.4-7.7 GHz. In addition, the book offers a detailed review of the recent developments of different types of CP antennas and arrays. Presents comprehensive discussions of design techniques for different types of CP antennas: small-size CP antennas, broadband CP antennas, multi-band CP antennas and CP arrays. Covers a wide range of antenna technologies such as microstrip antennas, helix, quadrifilar helix antenna, printed quadrifilar helix antenna, dielectric resonator antennas, printed slots, spiral antennas, monopoles, waveguide slot arrays, reflectarrays, active arrays, millimetre-wave arrays in LTCC, electronically beam-switching arrays and electronically beam-steerable arrays. Reviews recent developments in different types of CP antennas and arrays, reported by industries, researchers and academics worldwide. Includes numerous case studies to demonstrate how to design and implement different CP antennas in practical scenarios. Provides both an introduction for students in the field and an in-depth reference for antenna/RF engineers who work on the development of CP antennas. Circularly Polarized Antennas will be an invaluable guide for researchers in R&D organizations; system engineers (antenna, telecom, space and satellite); postgraduates studying the subjects of antenna and propagation, electromagnetics, RF/microwave/millimetre-wave systems, satellite communications and so on; technical managers and professionals in the areas of antennas and propagation.
Lim Eng Hock Compact Multifunctional Antennas for Wireless Systems Lim Eng Hock Compact Multifunctional Antennas for Wireless Systems Новинка

Lim Eng Hock Compact Multifunctional Antennas for Wireless Systems

8364.92 руб. или Купить в рассрочку!
Offers an up-to-date description of modern multifunctional antenna systems and microwave components Compact multifunctional antennas are of great interest in the field of antennas and wireless communication systems, but there are few, if any, books available that fully explore the multifunctional concept. Divided into six chapters, Compact Multifunctional Antennas for Wireless Systems encompasses both the active and passive multifunctional antennas and components for microwave systems. It provides a systematic, valuable reference for antenna/microwave researchers and designers. Beginning with such novel passive components as antenna filters, antenna packaging covers, and balun filters, the book discusses various miniaturization techniques for the multifunctional antenna systems. In addition to amplifying and oscillating antennas, the book also covers design considerations for frequency- and pattern-reconfigurable antennas. The last chapter is dedicated to the field of solar cell integrated antennas. Inside, readers will find comprehensive chapters on: Compact Multifunctional Antennas in Microwave Wireless Systems Multifunctional Passive Integrated Antennas and Components Reconfigurable Antennas Receiving Amplifying Antennas Oscillating Antennas Solar cell integrated Antennas Aimed at professional engineers and researchers designing compact antennas for wireless applications, Compact Multifunctional Antennas for Wireless Systems will prove to be an invaluable tool.
Hisamatsu Nakano Low-profile Natural and Metamaterial Antennas. Analysis Methods and Applications Hisamatsu Nakano Low-profile Natural and Metamaterial Antennas. Analysis Methods and Applications Новинка

Hisamatsu Nakano Low-profile Natural and Metamaterial Antennas. Analysis Methods and Applications

9311.71 руб. или Купить в рассрочку!
Presents recent progress in low-profile natural and metamaterial antennas This book presents the full range of low-profile antennas that use novel elements and take advantage of new concepts in antenna implementation, including metamaterials. Typically formed by constructing lattices of simple elements, metamaterials possess electromagnetic properties not found in naturally occurring materials, and show great promise in a number of low-profile antenna implementations. Introductory chapters define various natural and metamaterial-based antennas and provide the fundamentals of writing computer programs based on the method of moments (MoM) and the finite-difference time-domain method (FDTDM). Chapters then discuss low-profile natural antennas classified into base station antennas, mobile card antennas, beam-forming antennas, and satellite-satellite and earth-satellite communications antennas. Final chapters look at various properties of low-profile metamaterial-based antennas, revealing the strengths and limitations of the metamaterial-based straight line antenna (metaline antenna), metamaterial-based loop antenna (metaloop), open metaloop antenna, the effects of counter dual-band CP radiation, and more. Offers comprehensive coverage of both metamaterials and natural materials for low-profile antennas Written by an internationally-recognized expert in the field of low-profile antennas Depicts actual high-performance low-profile antennas for the antenna engineer Draws on classroom-tested material in graduate courses and short courses over the past 20 years Low-Profile Natural and Metamaterial Antennas is a must-have reference book for advanced undergraduate and graduate level students as well as antenna engineers interested in low-profile antenna design theory.
Hubregt Visser J. Approximate Antenna Analysis for CAD Hubregt Visser J. Approximate Antenna Analysis for CAD Новинка

Hubregt Visser J. Approximate Antenna Analysis for CAD

12439.94 руб. или Купить в рассрочку!
This step-by-step guide provides the reader with a detailed and thorough introduction to practical antenna design and model implementation In this book, Hubregt J. Visser provides an introduction to the fundamentals of antenna design and the implementation of design models. A variety of antennas for wireless applications and communications systems are explained, and the real-life use of the antennas is demonstrated through extensive use of application examples. The author includes discussions on the design process of several antennas, such as intravascular MR Antennas, PCB antennas, RFID antennas, rectennas etc. Furthermore, emphasis is placed on Computer Aided Design (CAD) using approximated models. Key Features Includes coverage on intravascular MR Antennas, PCB antennas, RFID antennas, rectennas, etc Comprehensively details the application areas, modeling, analysis, and validation processes for individual antennas Discusses the use of equivalent dipole antennas, equivalent transmission line networks and electrostatics Introduces many antennas and models that have not been covered in previous publications (such as MRI Antennas, for example) This book will be of interest to microwave and antenna engineers. Graduate and post-graduate antennas students studying BSc and MSc courses, as well as research assistants will also find this book insightful.
Wang Zhaocheng Millimeter Wave Communication Systems Wang Zhaocheng Millimeter Wave Communication Systems Новинка

Wang Zhaocheng Millimeter Wave Communication Systems

9198.02 руб. или Купить в рассрочку!
The aim of this book is to present the modern design and analysis principles of millimeter-wave communication system for wireless devices and to give postgraduates and system professionals the design insights and challenges when integrating millimeter wave personal communication system. Millimeter wave communication system are going to play key roles in modern gigabit wireless communication area as millimeter-wave industrial standards from IEEE, European Computer Manufacturing Association (ECMA) and Wireless High Definition (Wireless HD) Group, are on their way to the market. The book will review up-to-date research results and utilize numerous design and analysis for the whole system covering from Millimeter wave frontend to digital signal processing in order to address major topics in a high speed wireless system. This book emphasizes the importance and the requirements of high-gain antennas, low power transceiver, adaptive equalizer/modulation, channeling coding and adaptive multi-user detection for gigabit wireless communications. In addition, the book will include the updated research literature and patents in the topics of transceivers, antennas, MIMO, channel capacity, coding, equalizer, Modem and multi-user detection. Finally the application of these antennas will be discussed in light of different forthcoming wireless standards at V-band and E-band.
Jean-Marc Laheurte Compact Antennas for Wireless Communications and Terminals. Theory and Design Jean-Marc Laheurte Compact Antennas for Wireless Communications and Terminals. Theory and Design Новинка

Jean-Marc Laheurte Compact Antennas for Wireless Communications and Terminals. Theory and Design

10479.71 руб. или Купить в рассрочку!
Compact Antennas for Wireless Communications and Terminals deals with compact microwave antennas and, more specifically, with the planar version of these antennas. Planar antennas are the most appropriate type of antenna in modern communication systems and more generally in all applications requiring miniaturization, integration and conformation such as in mobile phone handsets. The book is suitable for students, engineers and scientists eager to understand the principles of planar and small antennas, their design and fabrication issues, and modern aspects such as UWB antennas, reconfigurable antennas and diversity issues.
Умный фитнес-браслет SMA SMA Q2 Lite оранжевый Умный фитнес-браслет SMA SMA Q2 Lite оранжевый Новинка

Умный фитнес-браслет SMA SMA Q2 Lite оранжевый

Тип: браслет Наличие экрана: есть Наличие фотокамеры: нет Воспроизведение аудио: нет Мониторинг физической активности: есть Пульсометр: есть Страна-производитель: Китай Измерение давления: нет
Внешний ЦАП PS Audio Stellar Gain Cell DAC Black Внешний ЦАП PS Audio Stellar Gain Cell DAC Black Новинка

Внешний ЦАП PS Audio Stellar Gain Cell DAC Black

Цифро-аналоговый преобразователь с функциями предусилителя, ЦАП ESS Sabre, работа в классе А, входы: 3 х RCA, XLR, 2 х коаксиальных, оптический, асинхронный USB, HDMI I2S, выходы: RCA, XLR, наушники, габариты 432х76х305 мм, вес 6,1 кг.
Nemai Karmakar Chandra Handbook of Smart Antennas for RFID Systems Nemai Karmakar Chandra Handbook of Smart Antennas for RFID Systems Новинка

Nemai Karmakar Chandra Handbook of Smart Antennas for RFID Systems

12589.71 руб. или Купить в рассрочку!
The Handbook of Smart Antennas for RFID Systems is a single comprehensive reference on the smart antenna technologies applied to RFID. This book will provide a timely reference book for researchers and students in the areas of both smart antennas and RFID technologies. It is the first book to combine two of the most important wireless technologies together in one book. The handbook will feature chapters by leading experts in both academia and industry offering an in-depth description of terminologies and concepts related to smart antennas in various RFID systems applications. Some topics are: adaptive beamforming for RFID smart antennas, multiuser interference suppression in RFID tag reading, phased array antennas for RFID applications, smart antennas in wireless systems and market analysis and case studies of RFID smart antennas. This handbook will cover the latest achievements in the designs and applications for smart antennas for RFID as well as the basic concepts, terms, protocols, systems architectures and case studies in smart antennas for RFID readers and tags.
Nemai Karmakar Chandra Handbook of Smart Antennas for RFID Systems Nemai Karmakar Chandra Handbook of Smart Antennas for RFID Systems Новинка

Nemai Karmakar Chandra Handbook of Smart Antennas for RFID Systems

12738.46 руб. или Купить в рассрочку!
The Handbook of Smart Antennas for RFID Systems is a single comprehensive reference on the smart antenna technologies applied to RFID. This book will provide a timely reference book for researchers and students in the areas of both smart antennas and RFID technologies. It is the first book to combine two of the most important wireless technologies together in one book. The handbook will feature chapters by leading experts in both academia and industry offering an in-depth description of terminologies and concepts related to smart antennas in various RFID systems applications. Some topics are: adaptive beamforming for RFID smart antennas, multiuser interference suppression in RFID tag reading, phased array antennas for RFID applications, smart antennas in wireless systems and market analysis and case studies of RFID smart antennas. This handbook will cover the latest achievements in the designs and applications for smart antennas for RFID as well as the basic concepts, terms, protocols, systems architectures and case studies in smart antennas for RFID readers and tags.
Wei Liu Low-cost Smart Antennas Wei Liu Low-cost Smart Antennas Новинка

Wei Liu Low-cost Smart Antennas

11309.04 руб. или Купить в рассрочку!
An authoritative guide to the latest developments for the design of low-cost smart antennas Traditional smart antenna systems are costly, consume great amounts of power and are bulky size. Low-cost Smart Antennas offers a guide to designing smart antenna systems that are low cost, low power, and compact in size and can be applied to satellite communications, radar and mobile communications. The authors – noted experts on the topic – provide introductions to the fundamental concepts of antennas, array antennas and smart antennas. The book fills a gap in the literature by presenting the design techniques of low-cost radio frequency (RF) smart antennas as well as approaches for implementing the hardware of the antenna and the beamforming network (BFN). A comprehensive and accessible book, Low-cost Smart Antennas not only presents an up-to-date review of the topic but includes illustrative case studies that contain in-depth explorations of the theory and technology of smart antennas. While other resources highlight the software (signal processing algorithms), this book is unique by focusing on the antenna hardware. This important book: Offers an introduction to the most recent developments of the design of low-cost smart antennas and their applications Presents a unique book that puts the focus on antenna hardware Includes a variety of case studies that clearly demonstrate the implementation of current design techniques Introduces both fundamental theories as well as more advanced topics Written for students and researchers and antenna engineers, Low-cost Smart Antennas explores the most recent advances in the field with an emphasis on antenna hardware.
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Тумба под раковину Cersanit Smart B-SU-SMA-CO50/Wh

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Тумба под раковину Cersanit Smart B-SU-SMA-CO80/Gr

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Тумба под раковину Cersanit Smart B-SU-SMA-CA50/Wh Тумба под раковину Cersanit Smart B-SU-SMA-CA50/Wh Новинка

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Тумба под раковину Cersanit Smart SU-SMA-CA50/Wh 50 белый /светлый ясень • Система открывания Push-to-open • Рейлинг для полотенца • Эргономичное внутреннее устройство ящиков
Chandna Bhavika Single-Capacitor Active-Feedback Compensation with Feedforward Stage Chandna Bhavika Single-Capacitor Active-Feedback Compensation with Feedforward Stage Новинка

Chandna Bhavika Single-Capacitor Active-Feedback Compensation with Feedforward Stage

Multistage amplifiers with high dc gain, a wide gain-bandwidth product, a large output signal swing are widely used in analog signal processing systems. Due to the scaling in CMOS technologies, single-stage cascade amplifier is no longer suitable in low-voltage designs. Therefore, many frequency compensation topologies based on Miller pole splitting and pole-zero cancellation has been reported to stabilize the multistage amplifiers. Single-Capacitor Active- Feedback Compensation with Feedforward Stage (SCAFC-FFS) scheme is proposed for three-stage amplifiers driving small capacitive loads. With the small-value compensation capacitor, high dc gain, a wide gain-bandwidth product and increased slew-rate can also be achieved under low-power conditions. The frequency compensation scheme is investigated and verified by PSPICE.
Prashant S. Mahajan, Jagadish B. Jadhav, Pramod J. Deore Design and Implementation of Rectangular Patch Antenna for Tri-Band operation Prashant S. Mahajan, Jagadish B. Jadhav, Pramod J. Deore Design and Implementation of Rectangular Patch Antenna for Tri-Band operation Новинка

Prashant S. Mahajan, Jagadish B. Jadhav, Pramod J. Deore Design and Implementation of Rectangular Patch Antenna for Tri-Band operation

Master's Thesis from the year 2013 in the subject Electrotechnology, grade: First Class, , course: Master Of Engineering, language: English, abstract: In today's modern communication industry, antennas are the most important components required to create a communication link. Microstrip antennas are the most suited for aerospace and mobile applications because of their low profile, light weight and low power handling capacity. These antennas can be designed in a variety of shapes in order to obtain enhanced gain and bandwidth for dual band and tri-band operation. This book focus on a detailed study of how to design and simulate a microstrip fed rectangular patch antenna using IE3D software with effect of antenna dimensions length ( L ), width ( W ), relative dielectric constant , substrate thickness (t ) on the radiation parameters of bandwidth and gain. The design parameters of the antenna calculated using the transmission line model. Here antenna operates for tri- band operation, the operating bands are GSM , PCA and UTMS for antenna geometry -I and WLAN and WiMAX for antenna geometry -II. The fractional bandwidths (FB) after simulation obtain under criterion ( S_11 < -10 dB) are 6.45% for GSM [890-960 MHz], 4.25% for WLAN [2.40 - 2.51 GHz], 6.89% for PCA [1850-1990 MHz], 11.42 % for WiMAX [3.35 - 3.94 GHz], 9.09% for UTMS [1920-2170 MHz] and 18.18% for WLAN [5.02 - 6.63 GHz] and peak gain 2.43 dBi at 5.36 GHz.
Щипцы Rowenta CF 3345 Щипцы Rowenta CF 3345 Новинка

Щипцы Rowenta CF 3345

Rowenta CF 3345. Щипцы для укладки волос.
Щипцы Rowenta CF 4512 Щипцы Rowenta CF 4512 Новинка

Щипцы Rowenta CF 4512

Щипцы Rowenta CF 4512 мультистайлер керамическое покрытие
Щипцы Rowenta CF 6420 Щипцы Rowenta CF 6420 Новинка

Щипцы Rowenta CF 6420

Rowenta CF 6420. Щипцы для завивки .
Тумба под раковину Cersanit Smart B-SU-SMA-CA50/Gr Тумба под раковину Cersanit Smart B-SU-SMA-CA50/Gr Новинка

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Тумба, монтажный комплект, инструкция, гарантийный талон
Шкафчик Cersanit Smart B-SW-SMA/Gr Шкафчик Cersanit Smart B-SW-SMA/Gr Новинка

Шкафчик Cersanit Smart B-SW-SMA/Gr

Шкафчик, монтажный комплект, инструкция, гарантийный талон
Jamil Irfan, Zhao Jinquan Techniques for Battery Charger System (Power Electronics) Jamil Irfan, Zhao Jinquan Techniques for Battery Charger System (Power Electronics) Новинка

Jamil Irfan, Zhao Jinquan Techniques for Battery Charger System (Power Electronics)

The short summary and promotional piece accompanying a creative work is about for battery charger system using ZCS (PWM) Resonant Converter Dc-Dc Buck. The aim and scope of this work to investigate the high efficiency of charging for battery level. The idea is forced to gain high efficiency, low circuit volume, minimize switching losses and satisfactory performance. The brief discussion of battery charger system and on use able functional methods. The short study of circuit descriptions, operating modes, output voltage gain and normalized voltage gain is also summarized. This high repetitious work which will give gratification fulfillment with the theoretical predictions to readers. I have special thanks to Engr. Rizwan Jamil to help me with research and development of the scope of this work.

кешбака
Страницы:


This book presents a comprehensive insight into the design techniques for different types of CP antenna elements and arrays In this book, the authors address a broad range of topics on circularly polarized (CP) antennas. Firstly, it introduces to the reader basic principles, design techniques and characteristics of various types of CP antennas, such as CP patch antennas, CP helix antennas, quadrifilar helix antennas (QHA), printed quadrifilar helix antennas (PQHA), spiral antenna, CP slot antennas, CP dielectric resonator antennas, loop antennas, crossed dipoles, monopoles and CP horns. Advanced designs such as small-size CP antennas, broadband, wideband and ultra-wideband CP antennas are also discussed, as well as multi-band CP antennas and dual CP antennas. The design and analysis of different types of CP array antennas such as broadband CP patch arrays, dual-band CP arrays, CP printed slot arrays, single-band and multi-band CP reflectarrays, high-gain CP waveguide slot antennas, CP dielectric resonator antenna arrays, CP active arrays, millimetre-waveband CP arrays in LTCC, and CP arrays with electronically beam-switching or beam-steering capabilities are described in detail. Case studies are provided to illustrate the design and implementation of CP antennas in practical scenarios such as dual-band Global Navigation Satellite Systems (GNSS) receivers, satellite communication mobile terminals at the S-band, Radio Frequency Identification (RFID) readers at 2.4 GHz, and Ka-band high-speed satellite communication applications. It also includes the detailed designs for a wideband Logarithmic spiral antenna that can operate from 3.4-7.7 GHz. In addition, the book offers a detailed review of the recent developments of different types of CP antennas and arrays. Presents comprehensive discussions of design techniques for different types of CP antennas: small-size CP antennas, broadband CP antennas, multi-band CP antennas and CP arrays. Covers a wide range of antenna technologies such as microstrip antennas, helix, quadrifilar helix antenna, printed quadrifilar helix antenna, dielectric resonator antennas, printed slots, spiral antennas, monopoles, waveguide slot arrays, reflectarrays, active arrays, millimetre-wave arrays in LTCC, electronically beam-switching arrays and electronically beam-steerable arrays. Reviews recent developments in different types of CP antennas and arrays, reported by industries, researchers and academics worldwide. Includes numerous case studies to demonstrate how to design and implement different CP antennas in practical scenarios. Provides both an introduction for students in the field and an in-depth reference for antenna/RF engineers who work on the development of CP antennas. Circularly Polarized Antennas will be an invaluable guide for researchers in R&D organizations; system engineers (antenna, telecom, space and satellite); postgraduates studying the subjects of antenna and propagation, electromagnetics, RF/microwave/millimetre-wave systems, satellite communications and so on; technical managers and professionals in the areas of antennas and propagation.
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