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OverviewExpanding the range of antenna frequency is the main objective of this book. Solutions proposed are based on the development of new theoretical methods for analyzing and synthesizing antennas. The book shows that concentrated capacitive loads connected along linear and V-antennas provide a high level of matching with a cable over a wide frequency range and improves directional characteristics of antennas, i.e. increases the communication distance. New theoretical methods are proposed for analysis and synthesis of antennas under consideration: 1) method of calculating directional characteristics of radiators with a given current distribution, and 2) method of electrostatic analogy for calculating mutual and total fields of complex multi-element radiating structures. These methods allow us to obtain optimal directional characteristics for director-type antennas (arrays of Yagi-Uda) and log-periodic antennas with concentrated capacitances and show that use of capacitors makes it possible to extend the frequency range of the director antennas and to decrease dimensions of the log-periodic antennas Multi-element (flat and three-dimensional) self-complementary antennas with different variants of connecting generator poles and cable wires to antenna elements are proposed, which improves the matching with a cable. Characteristics of flat structures are compared with characteristics of volume structures: conical, parabolic, and located on a pyramid edges. The book describes new versions of transparent antennas, antennas for cellular communication, multi-tier and multi-radiator antennas, and much more. Full Product DetailsAuthor: Boris LevinPublisher: Taylor & Francis Ltd Imprint: CRC Press Weight: 0.571kg ISBN: 9781138487444ISBN 10: 1138487449 Pages: 266 Publication Date: 01 March 2019 Audience: College/higher education , General/trade , Tertiary & Higher Education , General Format: Hardback Publisher's Status: Active Availability: In Print This item will be ordered in for you from one of our suppliers. Upon receipt, we will promptly dispatch it out to you. For in store availability, please contact us. Table of ContentsReviewsAuthor Information"Boris Levin was born in Saratov, Russia, in 1937. He received a Ph.D. in Radio Physics in 1969 and Doctor of Sciences degree in Physics and Mathematics (Russian equivalent of Professorship) from S.-Petersburg Polytechnic University in 1993. From 1963 to 1998, he worked for the Design Department ""Svyazmorproyekt"" of the Russia Shipbuilding Ministry. He has been with the Holon Institute of Technology, Israel since 2008. Levin Boris has authored 7 books on antennas and electrodynamics, 4 of them in English, including ""Antenna Engineering: Theory and Problems"" (CRC Press, 2017), and 87 original articles in technical journals, 87 papers in proceedings of international scientific conferences, and has 45 patents." Tab Content 6Author Website:Countries AvailableAll regions |