Directive Microstrip Antennas for Specific Below −2.45 GHz Applications

<table class="table-group" width="800px"><tr class="fig-image" id="a"><td><img alt="612170.fig.009a" src="https://static.hindawi.com/articles/ijap/volume-2012/612170/figures/612170.fig.009a.jpg"/></td></tr><tr class="fig-caption"><td align="center"><table><tr><td><b>(a) </b>E plane 1.4 GHz</td></tr></table></td></tr><tr class="fig-image" id="b"><td><img alt="612170.fig.009b" src="https://static.hindawi.com/articles/ijap/volume-2012/612170/figures/612170.fig.009b.jpg"/></td></tr><tr class="fig-caption"><td align="center"><table><tr><td><b>(b) </b>H plane 1.4 GHz</td></tr></table></td></tr><tr class="fig-image" id="c"><td><img alt="612170.fig.009c" src="https://static.hindawi.com/articles/ijap/volume-2012/612170/figures/612170.fig.009c.jpg"/></td></tr><tr class="fig-caption"><td align="center"><table><tr><td><b>(c) </b>E plane 2.2 GHz</td></tr></table></td></tr><tr class="fig-image" id="d"><td><img alt="612170.fig.009d" src="https://static.hindawi.com/articles/ijap/volume-2012/612170/figures/612170.fig.009d.jpg"/></td></tr><tr class="fig-caption"><td align="center"><table><tr><td><b>(d) </b>H plane 2.2 GHz</td></tr></table></td></tr></table>

<table>Simulated and measured radiation patterns of the log-periodic antenna.</table>

International Journal of Antennas and Propagation

fig9

Figure 9

Figure 9: Directive Microstrip Antennas for Specific Below −2.45 GHz Applications 