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ISSN Печать: 0040-2508
ISSN Онлайн: 1943-6009
Indexed in
An Approximate Solution to the Problem of Linear Antenna Synthesis by the Partial Pattern Method
Краткое описание
A technique is suggested for synthesizing linear antennas with the use of the partial pattern method, proceeding from a complex field antenna pattern defined for all the observation angles. Approximate numerical algorithms and computer programs have been developed for the linear antenna synthesis. For practical application of the results obtained, a numerical analysis of the antenna pattern in dependence on the amplitude-and-phase distribution has been performed with account of manufacture errors.
Radiation patterns of various radio systems should satisfy a number of requirements, both with respect to the main and side lobes. In some cases it is necessary to use a narrow-beam radiation pattern, while in the other the main lobe should have a specific (e.g. cosine-type) shape; the side lobes in all the cases should be as low as possible.
At the stage of designing an antenna, of special interest is the inverse problem, that is determining such a distribution of the EM field sources (currents) that would produce the specified field distribution in space or, in other words, the specified radiation pattern. The design parameters of the radiating system can be either specified independently or be liable to determination together with the amplitude-and-phase (or either phase or amplitude alone) characteristics of the currents over the antenna. Hence, the inverse problem so formulated represents a synthesis problem, i.e. determination of parameters of a radiation system from its radiation pattern. A number of papers [1] are addressed to the problem of radiation system synthesis.