<p>A microwave plane antenna in which antenna bodies carrying thereon respectively at least a pair of microstrip lines are mounted to a supporting frame through means for movably positioning the antenna bodies along a plane including an axis perpendicular to the plane of the antenna body and another axis in the width direction of each pair of the microstrip lines, whereby the main beam direction of the plane antenna is made settable optionally in three-dimensional zone to be in the optimum direction with respect to a geostationary broadcasting satellite for remarkably improving the reception gain.</p>
