Phased array antennas / / R.C. Hansen

• Record Nr.: UNINA9910140022103321
• Autore: Hansen Robert C.
• Pubbl/distr/stampa: Hoboken, New Jersey : , : Wiley, , c2009; [Piscataqay, New Jersey] : , : IEEE Xplore, , [2009]
• ISBN: 1-282-45543-5; 9786612455438; 0-470-52917-2; 0-470-52918-0
• Edizione: [2nd ed.]
• Descrizione fisica: 1 online resource (571 p.)
• Collana: Wiley series in microwave and optical engineering ; ; 213
• Disciplina: 621.3824; 621.38483
• Soggetti: Microwave antennas; Phased array antennas
• Lingua di pubblicazione: Inglese
• Formato: Materiale a stampa
• Livello bibliografico: Monografia
• Note generali: Description based upon print version of record.
• Nota di bibliografia: Includes bibliographical references and index.
• Nota di contenuto: Preface to the First Edition -- Preface to the Second Edition -- 1 Introduction -- 1.1 Array Background -- 1.2 Systems Factors -- 1.3 Annotated Reference Sources -- References -- 2 Basic Array Characteristics -- 2.1 Uniformly Excited Linear Arrays -- 2.2 Planar Arrays -- 2.3 Beam Steering and Quantization Lobes -- 2.4 Directivity -- References -- 3 Linear Array Pattern Synthesis -- 3.1 Introduction -- 3.2 Dolph Chebyshev Arrays -- 3.3 Taylor One-Parameter Distribution -- 3.4 Taylor N-Bar Aperture Distribution -- 3.5 Low-Sidelobe Distributions -- 3.6 Villeneuve N-Bar Array Distribution -- 3.7 Difference Patterns -- 3.8 Sidelobe Envelope Shaping -- 3.9 Shaped Beam Synthesis -- 3.10 Thinned Arrays -- Acknowledgment -- References -- 4 Planar and Circular Array Pattern Synthesis -- 4.1 Circular Planar Arrays -- 4.2 Noncircular Apertures -- Acknowledgment -- References -- 5 Array Elements -- 5.1 Dipoles -- 5.2 Waveguide Slots -- 5.3 TEM Horns -- 5.4 Microstrip Patches and Dipoles -- Acknowledgments -- References -- 6 Array Feeds -- 6.1 Series Feeds -- 6.2 Shunt (Parallel) Feeds -- 6.3 Two-Dimensional Feeds -- 6.4 Photonic Feed Systems -- 6.5 Systematic Errors -- Acknowledgments ; -- References -- 7 Mutual Coupling -- 7.1 Introduction -- 7.2 Fundamentals of Scanning Arrays -- 7.3 Spatial Domain Approaches to Mutual Coupling -- 7.4 Spectral Domain Approaches -- 7.5 Scan Compensation and Blind Angles -- Acknowledgment -- References -- 8 Finite Arrays -- 8.1 Methods of Analysis -- 8.2 Scan Performance of Small Arrays -- 8.3 Finite-by-Infinite Array Gibbsian Model -- References -- 9 Superdirective Arrays -- 9.1 Historical Notes -- 9.2 Maximum Array Directivity -- 9.3 Constrained Optimization -- 9.4 Matching of Superdirective Arrays -- References -- 10 Multiple-Beam Antennas -- 10.1 Introduction -- 10.2 Beamformers -- 10.3 Low Sidelobes and Beam Interpolation -- 10.4 Beam Orthogonality -- Acknowledgments -- References -- 11 Conformal Arrays -- 11.1 Scope -- 11.2 Ring Arrays -- 11.3 Arrays on Cylinders.; 11.4 Sector Arrays on Cylinders -- 11.5 Arrays on Cones and Spheres -- Acknowledgments -- References -- 12 Connected Arrays -- 12.1 History of Connected Arrays -- 12.2 Connected Array Principles -- 12.3 Connected Dipole Currents -- 12.4 Connection by Reactance -- 12.5 Connected Array Extensions -- References -- 13 Reflectarrays and Retrodirective Arrays -- 13.1 Reflectarrays -- 13.2 Retrodirective Arrays -- References -- 14 Reflectors with Arrays -- 14.1 Focal Plane Arrays -- 14.2 Near-Field Electromagnetic Optics -- References -- 15 Measurements and Tolerances -- 15.1 Measurement of Low-Sidelobe Patterns -- 15.2 Array Diagnostics -- 15.3 Waveguide Simulators -- 15.4 Array Tolerances -- Acknowledgment -- References -- Author Index -- Subject Index.
• Sommario/riassunto: An in-depth treatment of array phenomena and all aspects of phased array analysis and design Phased Array Antennas, Second Edition is a comprehensive reference on the vastly evolving field of array antennas. The Second Edition continues to provide an in-depth evaluation of array phenomena with a new emphasis on developments that have occurred in the field over the past decade. The book offers the same detailed coverage of all practical and theoretical aspects of phased arrays as the first edition, but it now includes: New chapters on array-fed reflector antennas; conn

Paediatric Allergy and Clinical Immunology (As Applied to Atopic Disease) : A Manual for Students and Practitioners of Medicine (Fourth Edition) / / Cecil Collins-Williams

• Record Nr.: UNINA9910149200103321
• Autore: Collins-Williams Cecil
• Pubbl/distr/stampa: Toronto : , : University of Toronto Press, , [2017]; ©1973
• ISBN: 1-4426-5493-7; 1-4426-5301-9
• Edizione: [4th ed.]
• Descrizione fisica: 1 online resource (170 pages) : illustrations
• Collana: Heritage
• Disciplina: 618.9297
• Soggetti: Allergy in children; Allergy; Immunopathology; Electronic books.
• Lingua di pubblicazione: Inglese
• Formato: Materiale a stampa
• Livello bibliografico: Monografia
• Nota di bibliografia: Includes bibliographical references.
• Nota di contenuto: Frontmatter -- Contents -- Preface -- History taking -- Respiratory allergy in children -- Eczema (ATOPic DERMATITIS) -- Urticaria and angioedema -- Gastrointestinal allergy -- Drug hypersensitivity -- Penicillin sensitivity -- Drugs inducing hypersensitivity not involving allergic mechanisms -- Acute reactions to bee stings -- Indications for removal of tonsils and adenoids in the allergic child -- Immunization of the allergic child against infectious disease -- Preparation and maintenance of a dust-free environment -- Dosages of drugs useful in the care of allergic children -- Skin testing -- Hyposensitization therapy in atopic disease -- Prophylaxis of allergy -- Common mistakes in the care of the allergic patient -- The optimistic approach to the care of the allergic patient -- The four types of allergic reactions responsible for clinical hypersensitivity and disease -- Anaphylaxis in man -- The immunoglobulins -- The atopic constitution - pulmonary aspergillosis -- Bibliography -- Glossary -- Appendix A: Elimination diets -- Appendix B: Immunological deficiency diseases -- Appendix C: Beta adrenergic blockade - Cyclic 3'5' AMP -- Appendix D: ; Pathophysiology of asthma
• Sommario/riassunto: This is a practical reference volume for the student or practising physician to aid him in the investigation, diagnosis, and treatment of allergy in children. It is based on procedures used at The Hospital for Sick Children in Toronto, Canada. In this new fourth edition, material has been added and established treatments up-dated. The allergies to which children are subject are discussed in clear, straightforward language, as are the basic principles of atopic disease. There are sections on prophylaxis of allergy, common mistakes in the care of the allergic patient, the optimistic approach to the care of the allergic patient, anaphylaxis in man, and the immunoglobulins. Each section is documented. Four appendices offer various diets and discuss immunological deficiency diseases, beta adrenergic blockade, and the pathophysiology of asthma.