The Determination of the Constants of an Ungrounded Antenna System (Classic Reprint) - Hardcover

George Sinclair

9780332702896: The Determination of the Constants of an Ungrounded Antenna System (Classic Reprint)

Hardcover

ISBN 10: 0332702898 ISBN 13: 9780332702896

Publisher: Forgotten Books, 2018

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This book explores the challenges faced by scientists in measuring the constants of ungrounded antenna systems, a system operating without any connection to the ground, unlike their grounded counterparts. The author begins by discussing the historical context of antenna systems and the theoretical foundation on which they operate. They then delve into the intricacies of radiated power and radiation resistance, explaining the concepts of equivalent height and antenna inductance, capacity, and natural wave-length. The book introduces the intercept method, a technique commonly used to measure antenna constants, and discusses its limitations and potential for error. The author proposes a new reactance method, which allows for more precise measurements, especially near the antenna's natural wave-length. The author then examines the various components of antenna resistance: radiation resistance, dielectric loss, ohmic loss, and corona loss. They provide a detailed analysis of how these components vary with wave-length and present a method for separating them. The book concludes with a series of experiments conducted by the author to test the accuracy of different resistance measurement techniques and provides valuable insights into the challenges and complexities of measuring antenna constants, particularly in ungrounded systems.

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