Figure 8

Radiation patterns for the eight-element array (sample 4) at (a) 19.5 GHz and (b) 25 GHz. The calculated radiation pattern based on Eqs. (1) and (2) is shown by the red curve. Black dots indicate normalized power measured at each angle. Data is measured from 0° to 180°. The mirror image is plotted as an aid to the eye. For the coordinate reference system see Fig. 1c.