An array of Franklin and Bruce antennas

Franklin and Bruce antennas are composed of repeated radiation cells. These antennas belong to the category of travelling wave antennas. The radiation from these antennas is linearly polarized. This paper presents an array of Franklin and Bruce antennas, which realizes dual polarization. The radiation characteristics of this array are evaluated on the basis of current distributions, which are numerically obtained using the method of moments. The mutual effects between the Franklin and Bruce antennas are presented and discussed. The numerical results show that the array can form radiation beams of x- and y-directed polarizations.