| 摘要 |
PURPOSE: An antenna structure is provided, in which a shield screen is installed in the direction opposite to the reflector and a strip line pattern serving as a feed antenna is formed onto the shield screen, to thereby allow the antenna to be manufacture in an easy manner. CONSTITUTION: An antenna structure comprises a reflector(11) having a metal- plated inner surface, and which reflects the radio wave being radiated so as to convert the radio wave into a parallel beam, and transmits thus-obtained parallel beam, or allows the radio wave to be focused at a single site; a shield screen(12) installed in the direction opposite to the reflector so as to seal the inner space of the reflector; a feed antenna pattern(13) formed of a strip line pattern which is formed onto the shield screen and positioned at the focusing portion of the reflector so as to radiate or absorb the radio wave; and a leg(14) arranged beneath the reflector so as to fix the shield screen and the reflector. The feed antenna pattern is made up of a conductive material like copper, silver or nickel.
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