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Radar. --- Imaging systems. --- Antenna arrays.

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Methods for determining antenna factors of antennas used for radiated emission measurements in electromagnetic interference (EMI) control from 9 kHz to 40 GHz are provided. Antennas included are linearly polarized antennas such as loops, rods (monopoles), tuned dipoles, biconical dipoles, log-periodic dipole arrays, biconical and log-periodic dipole array hybrids, broadband horns, etc., that are used in measurements prescribed by ANSI C63.4 and ANSI C63.10. The antenna calibration methods include standard site method (i.e., three-antenna method), reference antenna method, equivalent capacitance substitution method, standard transmit loop method, standard antenna method, and standard field method.

Electromagnetic compatibility. --- Electromagnetic interference --- Antenna arrays. --- Measurement.

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The goal of this work is the introduction of efficient antenna structures on the basis of the requirement of different microwave imaging methods; i.e. quantitative and qualitative microwave imaging techniques. Several criteria are proposed for the evaluation of single element antenna structures for application in microwave imaging systems. The performance of the proposed antennas are evaluated in simulation and measurement scenarios.

medical --- Ultra wideband --- Microwave imaging system --- Radar --- Mikrowelle --- Hochfrequenz --- Antenne --- Antenna

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The history of cable television in America is far older than networks like MTV, ESPN, and HBO, which are so familiar to us today. Tracing the origins of cable TV back to the late 1940s, media scholar John McMurria also locates the roots of many current debates about premium television, cultural elitism, minority programming, content restriction, and corporate ownership. Republic on the Wire takes us back to the pivotal years in which media regulators and members of the viewing public presciently weighed the potential benefits and risks of a two-tiered television system, split between free broadcasts and pay cable service. Digging into rare archives, McMurria reconstructs the arguments of policymakers, whose often sincere advocacy for the public benefits of cable television were fueled by cultural elitism and the priority to maintain order during a period of urban Black rebellions. He also tells the story of the people of color, rural residents, women's groups, veterans, seniors, and low-income viewers who challenged this reasoning and demanded an equal say over the future of television. By excavating this early cable history, and placing equality at the center of our understanding of media democracy, Republic on the Wire is a real eye-opener as it develops a new methodology for studying media policy in the past and present.

HISTORY / United States / 20th Century. --- TECHNOLOGY & ENGINEERING / Telecommunications. --- SOCIAL SCIENCE / Media Studies. --- Television broadcasting --- Broadcasting --- Cable television --- Cable TV --- CATV --- Community antenna television --- Television, Cable --- Subscription television --- Television relay systems --- Public-access television --- History.

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This book considers a cylindrical phased array with microstrip patch antenna elements and half-wavelength dipole antenna elements. The effect of platform and mutual coupling effect is included in the analysis. The non-planar geometry is tackled by using Euler's transformation towards the calculation of array manifold. Results are presented for both conducting and dielectric cylinder. The optimal weights obtained are used to generate adapted pattern according to a given signal scenario. It is shown that array along with adaptive algorithm is able to cater to an arbitrary signal environment even when the platform effect and mutual coupling is taken into account. This book provides a step-by-step approach for analyzing the probe suppression in non-planar geometry. Its detailed illustrations and analysis will be a useful text for graduate and research students, scientists and engineers working in the area of phased arrays, low-observables and stealth technology.

Engineering. --- Optics. --- Electrodynamics. --- Microwaves. --- Optical engineering. --- Electronics. --- Microelectronics. --- Microwaves, RF and Optical Engineering. --- Optics and Electrodynamics. --- Electronics and Microelectronics, Instrumentation. --- Phased array antennas. --- Antennas, Phased array --- Antenna arrays --- Antennas (Electronics) --- Radar --- Classical Electrodynamics. --- Electrical engineering --- Physical sciences --- Hertzian waves --- Electric waves --- Electromagnetic waves --- Geomagnetic micropulsations --- Radio waves --- Shortwave radio --- Microminiature electronic equipment --- Microminiaturization (Electronics) --- Electronics --- Microtechnology --- Semiconductors --- Miniature electronic equipment --- Dynamics --- Physics --- Light --- Mechanical engineering