Frequency Arrays PDF Download

Author: Herbert Edward Soper
Publisher:
ISBN:
Category : Correlation (Statistics)
Languages : en
Pages : 58

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Book Description

Author: Michael Brandstein
Publisher: Springer Science & Business Media
ISBN: 3662046199
Category : Technology & Engineering
Languages : en
Pages : 401

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Book Description
This is the first book to provide a single complete reference on microphone arrays. Top researchers in this field contributed articles documenting the current state of the art in microphone array research, development and technological application.

Author: Horace Edward Wheeler
Publisher:
ISBN:
Category : Probabilities
Languages : en
Pages : 64

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Book Description

Author: Randy L. Haupt
Publisher: John Wiley & Sons
ISBN: 1119071917
Category : Technology & Engineering
Languages : en
Pages : 228

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Book Description
Introduces timed arrays and design approaches to meet the new high performance standards The author concentrates on any aspect of an antenna array that must be viewed from a time perspective. The first chapters briefly introduce antenna arrays and explain the difference between phased and timed arrays. Since timed arrays are designed for realistic time-varying signals and scenarios, the book also reviews wideband signals, baseband and passband RF signals, polarization and signal bandwidth. Other topics covered include time domain, mutual coupling, wideband elements, and dispersion. The author also presents a number of analog and digital beamforming networks for creating and manipulating beams. The book concludes with an overview of the methods to integrate time delay into the array design and of several other adaptive arrays that prove useful in many different systems. Examines RF signal concepts such as polarization and signal bandwidth and their applications to timed antenna arrays Covers arrays of point source, elements in timed antenna arrays, active electronically scanned array technology, and time delay in corporate fed arrays Includes complete design examples for placing time delay in arrays Timed Arrays: Wideband and Time Varying Antenna Arrays is written for practicing engineers and scientists in wireless communication, radar, and remote sensing as well as graduate students and professors interested in advanced antenna topics.

Author: Sathish Chandran
Publisher: Springer Science & Business Media
ISBN: 3662055929
Category : Technology & Engineering
Languages : en
Pages : 662

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Book Description
This compilation of the works and insights of various key scientists and engineers in this area addresses the current and future trends of scenarios for employing adaptive antenna arrays in communication systems. Ideal as a quick reference for engineers, researchers, advanced undergraduate and postgraduate students.

Author: Chiong Ching Lai
Publisher: Springer
ISBN: 9811016917
Category : Technology & Engineering
Languages : en
Pages : 122

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Book Description
The book covers the design formulations for broadband beamformer targeting nearfield and farfield sources. The book content includes background information on the acoustic environment, including propagation medium, the array geometries, signal models and basic beamformer designs. Subsequently it introduces design formulation for nearfield, farfield and mixed nearfield-farfield beamformers and extends the design formulation into electronically steerable beamformers. In addition, a robust formulation is introduced for all the designs mentioned.

Author: Carl Gerald Justus
Publisher:
ISBN:
Category : Wind power
Languages : en
Pages : 132

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Book Description

Author: Dipak L. Sengupta
Publisher:
ISBN:
Category : Antenna arrays
Languages : en
Pages : 72

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Book Description
Radiation patterns produced by arrays of axial slots on a conducting cylinder are studied theoretically and experimentally to develop directive antenna systems for use on electrically small aircraft or missiles. The design of the array is mainly governed by the considerations of required field discriminations between various directions. A method has been developed for the design of a reduced-height waveguide cavity-backed slot which can be used as an individual radiating element of the array. Impedance and radiating properties of the slot element are studied and discussed.

Author: Dmitrii I. Voskresenskii
Publisher: Springer Science & Business Media
ISBN: 1461234840
Category : Technology & Engineering
Languages : en
Pages : 335

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Book Description
Modern radar, telecommunication, sonar, and radio-astronomy systems use integrated systems, complex signals, and signal processing methods exten sively. These systems require the development of new, more efficient systems. One of the major ways to improve radar and sonar systems is to use multichannel systems, the most promising of which employ space-time signal processing. In the last few years the intensive growth in electronics, informa tion processing techniques, microwave and laser technology, electrooptics and holography, acoustics, and optoelectronics have resulted in new scientific and technological research fronts. One of these is the theory and technology of electrooptical array antennas-a new class of receiving antennas whose pat tern is controlled by means of coherent optics and holography. Electrooptical array theory and technology have been involved in the study of the power, resolution, and range characteristics of arrays with various coherent opti cal processors. The practical applications of these systems and methods for building them using contemporary optoelectronics have also been studied.

Author: Robert J. Mailloux
Publisher: Springer Nature
ISBN: 3031015347
Category : Technology & Engineering
Languages : en
Pages : 81

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Book Description
Scanning arrays present the radar or communications engineer with the ultimate in antenna flexibility. They also present a multitude of new opportunities and new challenges that need to be addressed. In order to describe the needs for scanned array development, this book begins with a brief discussion of the history that led to present array antennas. This text is a compact but comprehensive treatment of the scanned array, from the underlying basis for array pattern behavior to the engineering choices leading to successful design. The book describes the scanned array in terms of radiation from apertures and wire antennas and introduces the effects resulting directly from scanning, including beam broadening, impedance mismatch and gain reduction and pattern squint and those effects of array periodicity including grating and quantization lobes and array blindness. The text also presents the engineering tools for improving pattern control and array efficiency including lattice selection, subarrray technology and pattern synthesis. Equations and figurers quantify the phenomena being described and provide the reader with the tools to tradeoff various performance features. The discussions proceed beyond the introductory material and to the state of the art in modern array design. Contents: Basic Principles and Applications of Array Antennas / Element Coupling Effects in Array Antennas / Array Pattern Synthesis / Subarray Techniques for Limited Field of View and Wide Band Applications