Abstract
AbstractThis paper discusses pattern synthesis to obtain a fan beam with slot array antennas created on the narrow wall of a waveguide. Traditional pattern synthesis methods of this kind of antenna include the sampling technique of a continuous source distribution over the antenna aperture and the approach in which each slot is treated as a discrete source. In this paper, the locations of slots derived by the sampling method are used as the initial values. the current amplitude and the location of each slot are corrected by linear programming so that the antenna efficiency is improved.Although the problem of finding the correct amplitude in each slot is a linear problem, that of correcting the slot location is nonlinear. Hence, linear programming is applied to the latter by linear approximation. A successive method is studied in which the amplitude and location of the slot are alternately and repeatedly modified. the antenna efficiency of ‐3 dB has been improved to ‐1 dB. the effect of fabrication inaccuracy on the optimally designed antenna is compared to that based on the traditional design.
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