By Robert S. Elliott
A vintage Reissue within the IEEE Press sequence on Electromagnetic Wave concept —Donald G. Dudley, sequence Editor
"Beautifully and obviously written and of the top technical quality." -Dr. Robert J. Mailloux, AFRL/SNH
"A vintage paintings within the box. there are lots of distinct descriptions of key electromagnetic recommendations mentioned during this textual content that aren't chanced on anyplace else. the writer is likely one of the best researchers during this box. lots of his scholars also are best researchers during this box. this article has been utilized by a few of the senior antenna engineers in industry." -Kathleen L. Virga, collage of Arizona, Tucson
First released in 1981, Robert S. Elliott's Antenna idea and layout is without doubt one of the most vital works in electromagnetic idea and purposes. In its broad-ranging, analytic therapy, replete with aiding experimental facts, Antenna conception and layout conveys primary tools of research that may be used to foretell the electromagnetic habit of approximately every thing that radiates. After greater than twenty years, it continues to be a key source for college students, professors, researchers, and engineers who require a finished, in-depth remedy of the topic.
according to requests from lots of our participants, IEEE is now reissuing this vintage. Newly revised, it once more might be a useful textbook and an everlasting reference for practising engineers.
The IEEE Press sequence on Electromagnetic Wave conception deals notable insurance of the sector. It involves new titles of up to date curiosity in addition to reissues and revisions of well-known classics by means of verified authors and researchers. The sequence emphasizes works of long term archival value in electromagnetic waves and purposes. Designed particularly for graduate scholars, researchers, and training engineers, the sequence presents reasonable volumes that discover and clarify electromagnetic waves past the undergraduate point.
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Additional info for Antenna Theory & Design
145) are called the mode voltage and mode current and are given generally by with A and B constants to be determined by the boundary conditions, with P the propagation constant and Y o the characteristic admittance of the mode. 146) gives This is a key result of the analysis and can be interpreted as saying that the mode voltages and currents at the two ports satisfy the reciprocity theorem. Next, let Z , , be the impedance of antenna 1 referenced at port 1, and let Z,, be the impedance of antenna 2 referenced at port 2.
Using the vector identity FIG. 1 Notation for Vector Green's Theorem. 1 3 5 . A. Stratton and L. J. -Chu, "Diffraction Theory of Electromagnetic Waves," Phys. , 56 (1939), 99-107. Also, see the excellent treatment in S. Silver, Microwave Antenna Theory and Design, MIT Rad. Lab. Series, Vol. , 1939), pp. 80-9. The present development is a reproduction, with permission, of what appears in R. S. , 1966), pp. 272-80 and 534-8, and differs from Silver's treatment principally in the nonuse of fictitious magnetic currents and charges.
36) may b: rewritten as This result gives the power balance in a volume element dV. 37) is the instantaneous power being supplied by the impressed sourczs to d V . The factor is the time rate of change of density of stored energy. ' The factor E Jr represents the power density being absorbed from the field by the response current density J r . If, for example, the response current is flowing in a conductor, this term accounts for ohmic loss. Alternatively, if Jr is due t o freely moving charges, E Jr accounts for their change in kinetic energy.