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| Keywords: Slot antenna section3.jpg en Slotted waveguide antenna of S-band 2 - 4 GHz marine radar with section of plastic cover cut away to show internal construction Exhibit in Gdynia Maritime School Poland This common type of marine radar antenna consists of a waveguide in a V-shaped metal reflector with many slots cut in it It radiates a narrow vertical fan-shaped beam of microwaves perhaps 15° high and 2-3° wide perpendicular to the long axis of the antenna When installed in a ship a motor rotates the bar-shaped antenna about a vertical axis scanning the beam around the horizon to search for other ships pl Przekrój przez antenę szczelinową radaru pasma S own Ciacho5 2009-09-05 Radar antennas Civilian ship radars Waveguide antennas | ||||
