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Bipolarized X-band antenna array with an edge-decreasing field distribution
Ballandovich S.V.
1, Kostikov G. A.
1, Liubina L.M.
1, Antonov Y. G.1
1St. Petersburg Electrotechnical University ”LETI“, St. Petersburg, Russia
Email: svballandovich@etu.ru, gakostikov@etu.ru, lmlyubina@etu.ru, igantonov@etu.ru
The results of a for a bipolarized X-band antenna array is presented. A special feature of the design is the use of a milled base, which makes it possible to reduce the mutual influence between the microstrip lines of the feed network and thereby achieve the required a decreasing to the edges amplitude distribution in the antenna surface to reduce the level of the side lobes. Experimental studies on the layout of a common-mode, bipolarized antenna array with dimensions of 3λ_0x 6.7 λ0 (where λ0 corresponds to the center frequency of the operational range) have shown a relative operational frequency band of 12 %, with a standing wave ratio (SWR)<2 and a decoupling between polarization channels of at least -27 dB. Side lobe levels in orthogonal planes do not exceed -18 dB. Keywords: antenna array, bipolarized, side lobe level, X-band, decreasing amplitude distribution.
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