Zero Index Metamaterial for Designing High-Gain Patch Antenna

Figure 11

The measured radiation patterns for the conventional wideband antenna and the proposed antenna at the frequencies of (a) 10.15 GHz, (b) 10.6 GHz, (c) 10.8 GHz, and (d) 11.3 GHz.

(a)

(b)

(c)

(d)