الفهرس 
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Abstract
This thesis is concerned with a careful study of the theory and characteristics of corner reflector antennas. The corner reflector antennas of the V-shaped type have been used earlierly to increase the directivity of the half-wavelength dipole antenna. In its original shape this antenna is normally a X/2 element with a reflector constructed of two flat conducting sheets at an angle of n/N where N = 1,2,3 and 4. To analyse such reflector antennas the method of images is used by assuming semiinfinite reflectors without losses and considering suitable images for the X/2 radiator . Extensive numerical and experimental results are found for the radiation patterns with finite sizes of the used planar reflectors. For the case when the driven element is a center-fed half-wave dipole, the usual arrangement is to place the dipole on the bisector of the corner angle parallel to the apex of the reflector. This scheme produces linearly polarized radiation. There is another arrangement in which the X/2 dipole is tilted in the vertical plane passing by the line of intersection of the two planar reflectors of the antenna