PURPOSE: A microstrip stacked patch antenna is provided to reduce interference between frequency bands by forming a plurality of microstrip patch antennae into a stack structure. CONSTITUTION: A first foam substrate(120) is laminated on a first substrate(110). A second substrate(130) is laminated on the first foam substrate. A second foam substrate(140) is laminated on the second substrate. A third substrate is laminated on the second foam substrate. A first microstrip patch is formed on the upper surface of the first substrate. A first parasitic patch is formed on the lower surface of the second substrate. A second microstrip patch is formed on the upper surface of the second substrate. A second parasitic patch is formed on the lower surface of the third substrate. The first and the second microstrip patch are fed by a first and a second feeding line.
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