Reduced sized flat antenna having array patch antenna elements

摘要

PURPOSE: A small plane antenna is provided to achieve an improved efficiency and gain, while reducing the size of the antenna. CONSTITUTION: An antenna comprises an array type patch antenna element(100), and a low noise blockdown converter. The array type patch antenna element includes a reflecting substrate; a radiation substrate(50) having a plurality of slots arranged to form an angle of 180 degrees, and a feed line for feeding current to the slots; a lens substrate(70) having a plurality of lens holes; a first spacer(40) interposed between a grounding substrate and the radiation substrate; and a second spacer(60) interposed between the radiation substrate and the lens substrate. The low noise blockdown converter includes a lower case having a waveguide and a plurality of cavities, and an upper case coupled to the lower case.