Cylindrical arrays lie at the heart of the antenna systems of most major radio communication systems, including broadcasting networks, cellular 'phone systems and radar. In this book, the authors present practical theoretical methods for determining current distributions, input admittances and field patterns of a wide variety of cylindrical antennas, including the isolated antenna, the two-element array, the circular array, curtain arrays, Yagi and log-periodic arrays, planar arrays and three-dimensional arrays. Coverage includes analysis of horizontal antennas over, on and in the earth and sea, large resonant arrays of electrically short dipoles and a chapter on the theory and techniques of experimental measurement. Written by three of the leading engineers in the field, and based on world-class research carried out at Harvard over the last 40 years, Cylindrical Antennas and Arrays is destined to become established as the basic reference for practising engineers and advanced students for many years to come.(3.106b) The ratio of the power supplied to antenna 1 to that supplied to antenna 2 is |V20|2G20/|V10|2G10 = 7.9. The currents represented by (3.105a) and ( 3.105b) are shown in the upper diagram in Fig. ... + A2eaj(I²0b/2) cos], (3.107) where A1 = V10[(0.129 +j0.884)Gm(, I) aj2.805Fm(, I)] (3.108a) A2 = V10[(a 0.884 + j0.129)Gm( , I) + (3.554 + j2.710)Fm( , I)] (3.108b) a a#39;Z a#39;Z -12 W1 7 F1 W k a#39;ii.
|Title||:||Cylindrical Antennas and Arrays|
|Author||:||Ronold W. P. King, George J. Fikioris, Richard B. Mack|
|Publisher||:||Cambridge University Press - 2002-10-10|