Abstract
Generally, an array antenna is designed by using the array factor. However, the conventional design method is not taking into account of mutual coupling between elements. So the resultant beam width and the side-lobe levels of the array deviate from the desired values. In this paper a new design method of array antenna with reflector is proposed. All elements' lengths are adjusted in order to suppress the reactance component of each element. Therefore all elements are worked as pure resistance, but they do not have same values. The desired current distribution of the array is obtained by adjusting the exciting voltage of each element because each element has no reactance component by adjusting the elements' lengths. It takes into account of mutual coupling between elements. The proposed array antenna design method is very simple.
