Figure 5
Radiation patterns for sample 3 (four-element array) at (a) 6.5 GHz, (b) 8.5 GHz, and (c) 14 GHz. A calculation for the 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 reference coordinate system see Fig. 1c.
