Minimized Low-Profile Wideband Antennas Using High Impedance Surface

Figure 7

Effect of HIS array size to the radiation patterns on (-) and (-) planes at four frequency points: 0.55 GHz, 0.60 GHz, 0.65 GHz, and 0.70 GHz.

(a) 0.55 GHz (-plane)

(b) 0.60 GHz (-plane)

(c) 0.65 GHz (-plane)

(d) 0.70 GHz (-plane)

(e) 0.55 GHz (-plane)

(f) 0.60 GHz (-plane)

(g) 0.65 GHz (-plane)

(h) 0.70 GHz (-plane)