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Design and Applications of Active Integrated Antennas

Author: Mohammad S. Sharawi

Publisher: Artech House

Published: 2018-05-31

Total Pages: 280

ISBN-13: 1630815276

This comprehensive new resource guides professionals in the latest methods used when designing active integrated antennas (AIA) for wireless communication devices for various standards. This book provides complete design procedures for the various elements of such active integrated antennas such as the matching network, the amplifier/active element as well as the antenna. This book offers insight into how active integration and co-design between the active components (amplifier, oscillator, mixer, diodes) and the antenna can provide better power transfer, higher gains, increased efficiencies, switched beam patterns and smaller design footprints. It introduces the co-design approach of active integrated antennas and its superior performance over conventional methods. Complete design examples are given of active integrated antenna systems for narrow and wideband applications as well as for multiple-input-multiple-output (MIMO) systems. Readers find the latest design methods for narrow and broadband RF matching networks. This book provides a complete listing of performance metrics for active integrated antennas. The book serves as a complete reference and design guide in the area of AIA.

Integrated Active Antennas and Spatial Power Combining

Author: Julio A. Navarro

Publisher: Wiley-Interscience

Published: 1996-08-23

Total Pages: 0

ISBN-13: 9780471049845

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This is the only book currently available that covers this subject. The authors piece together information from diverse areas which is essential to understand integrated and integrated active antennas. Emphasis is placed on active antennas and power combining applications, consolidating the work from numerous researchers. Early chapters lay the foundation for oscillator, antenna, array and power combining theory. Chapter five discusses important testing parameters and techniques for active antenna measurements and includes definitions for equivalent isotropic radiated power, locking gain and locking bandwidth. The last chapter sheds light on beam steering, a more recent development in active antenna arrays. Contains over 200 illustrations.

Development of Active Integrated Antennas and Optimization for Harmonic Suppression Antennas

Author: Dawei Zhou

Publisher:

Published: 2007

Total Pages:

ISBN-13:

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The objectives of this research work are to investigate, design and implement active integrated antennas comprising active devices connected directly to the patch radiators, for various applications in high efficiency RF front-ends, integrated oscillator antennas, design and optimization of harmonic suppression antennas using a genetic algorithm (GA). A computer-aided design approach to obtain a class F operation to optimizing the optimal fundamental load impedance and designing the input matching circuits for an active integrated antenna of the transmitting type is proposed and a case study of a design for 1.6 GHz is used to confirm the design principle. A study of active integrated oscillator antennas with a series feed back using a pseudomorphic high electronmobility transistor (PHEMT) confirms the design procedure in simulation and measurement for the oscillator circuit connected directly to the active antenna. Subsequently, another design of active oscillator antenna using bipolar junction transistor (BJT) improves the phase noise of the oscillation and in addition to achieve amplitude shift keying (ASK) and amplitude modulation (AM) modulation using the proposed design circuit. Moreover, the possibility of using a sensor patch technique to find the power accepted by the antenna at harmonic frequencies is studied. A novel numerical solution, for designing and optimizing active patch antennas for harmonic suppression using GA in collaboration with numerical electromagnetic computation (NEC), is presented. A new FORTRAN program is developed and used for adaptively meshing any planar antenna structure in terms of wire grid surface structures. The program is subsequently implemented in harmonic suppression antenna design and optimization using GA. The simulation and measurement results for several surface structures show a good agreement.

Analysis and Design of Integrated Circuit-Antenna Modules

Author: K. C. Gupta

Publisher: Wiley-Interscience

Published: 2000

Total Pages: 448

ISBN-13:

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With communications technologies rapidly expanding, the traditional separation of electronic circuits and antenna systems design is no longer feasible. This book covers various design approaches applicable to integrated circuit-antenna modules with the goal of placing the antenna, transmitter, and receiver all on a single chip. It emphasizes analysis and design involving the integration of circuit functions with radiating elements and addresses trends in systems miniaturization.

Global Design of an Active Integrated Antenna for Millimeter Wave

Author:

Publisher:

Published: 2001

Total Pages:

ISBN-13:

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An active integrated antenna working in the millimeter wave has been realized in a monolithic process. The concept of active integrated antenna is first introduced, then the design of the integrated circuit based on a global approach, following electromagnetic and circuit simulations, is presented. The obtained performances of the active antenna are discussed and compared to a passive one.

Multiband Integrated Antennas for 4G Terminals

Author: David A. Sánchez-Hernández

Publisher: Artech House

Published: 2008

Total Pages: 337

ISBN-13: 1596933984

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The book serves as a comprehensive, one-stop resource, including in-depth coverage of multiband integrated antenna design, simulation, testing and manufacturing. This practical book helps you solve integration problems for ever-increasing multiband requirements. You find discussions on important considerations regarding future handset MIMO terminals, such as efficiency and the effect of the user. The book also shows you how to avoid tweaking for fractal multiband designs and printed dipole design.

The Development of Active Integrated Antennas and a Design Methodology

Author: David J. Roscoe

Publisher:

Published: 2012

Total Pages:

ISBN-13:

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Radio Propagation in the Urban Scenario

Author: Giorgio Franceschetti

Publisher: Artech House

Published: 2023-05-31

Total Pages: 311

ISBN-13: 1630818577

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This practical book provides fundamentals of electromagnetic wave propagation and its unique application for the design of mobile wireless systems in complex urban environments. It supplies telecommunication engineers with the proper theoretical and practical tools to: plan radio coverage in cellular networks; design a radio link; predict connectivity in a wireless network and ensure that the system to be designed fulfills regulations on exposure of general public to electromagnetic fields. You’ll understand the latest propagation models and be equipped to address the challenges facing wireless propagation for the most recent 5G mobile systems, including how to cope with new propagation scenarios/frequencies in 5G wireless channel modelling. You’ll also find unique coverage of the problems of human exposure to electromagnetic fields and the corresponding international and national regulations, including the most recent ICNIRP guidelines. The book brings theory, algorithms, and applications into focus with some practical examples. Specific attention is devoted to laying the mathematical foundations of the asymptotic techniques that are presented; of the propagation over a flat and spherical Earth; and also of the propagation in complex environment in order to provide a cohesive exposition of the underlying principles. With its strong theoretical background on fundamentals of electromagnetic propagation along with an application-oriented approach, this is a must-have book for researchers working on applied electromagnetics and engineers working on wireless network planning at an advanced level. It is also rich in details and clear, making it an excellent textbook for advanced and graduate-level students.

Handbook of Antennas for EMC, Second Edition

Author: Thereza M. MacNamara

Publisher: Artech House

Published: 2018-09-30

Total Pages: 380

ISBN-13: 1630814261

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Finally - a completely revised, updated, and expanded edition of the Artech House classic, Handbook of Antennas for EMC. The second edition features a wealth of brand new material, including chapters on recent techniques, standards, and measurements. This invaluable resource provides a thorough understanding of the practical aspects and underpinnings of antennas in EMC systems. Professionals find summaries of important underlying mathematics without the heavy theoretical emphasis that characterizes much of the existing literature. Professionals discover which antennas to choose for electromagnetic (EM) compatibility and compliance. Moreover, this authoritative book offers a solid understanding of the main characteristics of an antenna in a qualitative manner. Essential reading for EMC engineers, this volume provides the knowledge needed to determine the right antenna for specific applications and offers guidance in conducting EMC testing.

A Linearly and Circularly Polarized Active Integrated Antenna

Author: Ali Khoshniat

Publisher:

Published: 2011

Total Pages: 80

ISBN-13:

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This thesis work presents a new harmonic suppression technique for microstrip patch antennas. Harmonic suppression in active integrated antennas is known as an effective method to improve the efficiency of amplifiers in transmitter side. In the proposed design, the antenna works as the radiating element and, at the same time, as the tuning load for the amplifier circuit that is directly matched to the antenna. The proposed active antenna architecture is easy to fabricate and is symmetric, so it can be conveniently mass-produced and designed to have circular polarization, which is preferred in many applications such as satellite communications. The antenna simulations were performed using Ansoft High Frequency System Simulator (HFSS) and all amplifier design steps were simulated by Advanced Design System (ADS). The final prototypes of the linearly polarized active integrated antenna and the circularly polarized active integrated antenna were fabricated using a circuit board milling machine. The antenna radiation pattern was measured inside Utah State University's anechoic chamber and the results were satisfactory. Power measurements for the amplifiers' performance were carried out inside the chamber and calculated by using the Friis transmission equation. It is seen that a significant improvement in the efficiency is achieved compared to the reference antenna without harmonic suppression. Based on the success in the single element active antenna design, the thesis also presents a feasibility of applying the active integrated antenna in array configuration, in particular, in scanning array design to yield a low-profile, low-cost alternative to the parabolic antenna transmitter of satellite communication systems.