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Some optimum antenna arrays by Drane, Charles J. Jr., is a nonfiction available to read on EtoBox.

What is Some optimum antenna arrays about?

This is a theoretical study of certain optimum linear arrays of nonuniformly spaced, isotropic antennas. For this purpose, the beamwidth of any given radiation pattern is defined in a new, integral sense, with low values denoting highly directional radiation patterns with low sidelobes. The present work is almost wholly concerned with the choice of (1) the excitation currents, and (2) the locations of individual antennas to minimize this particular beamwidth. It is shown that the first of these two choices reduces to a straightforward eigenvalue problem involving symmetric matrices. The search for the optimum element locations, however, requires also a knowledge of the derivatives of this 'best' beamwidth with respect to changes in the element spacings, together with some hunting procedure to arrive at configurations for which all those are zero. In the present computations, the latter consisted of a step-by-step procedure wherein the locally optimum beamwidth and its derivatives for any given array were first computed via the matrices, and successive neighboring configurations were then defined automatically with the elements shifted by amounts (of prescribed total magnitude) calc

Who reads Some optimum antenna arrays?

Author

Drane, Charles J. Jr.,

Publisher

Air Force Cambridge Research Laboratories, Office of Aerospace Research, United States Air Force, 1966.

Published

1966

Language

EN

Category

nonfiction