| 摘要 |
FIELD: radio engineering; very-high-frequency television broadcasting. SUBSTANCE: rotational- symmetry antenna array has its elements disposed on cylindrical surface; floors are spaced along center line of mentioned cylindrical surface, each floor being essentially circular ring; angular distance between phase centers of array elements disposed over mentioned ring equals 2pi/N, where N is number of array elements per floor, each element being essentially linearly polarized directional reflector; elements of one floor are shifted relative to those of other floor by angle of 2pi/(NNf), where Nf is number of array floors. Phase shift in power supplied to adjacent elements of array floor is 2pi/N; phase shift in power supplied to elements of one floor relative to those of other floor is 2pi/(NNf); maxima of directivity patterns of elements in horizontal plane are turned relative to array radius crossing phase center of this element through angle equal to where lambda is wavelength at intermediate frequency of omnidirectional antenna array, where rho is its radius. EFFECT: improved matching at desired uniformity of directivity pattern. 4 cl, 5 dwg
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