A Compact Single-Feed Circularly Polarized Microstrip Antenna with Symmetric and Wide-Beamwidth Radiation Pattern

<table class="table-group" width="800px"><tr class="fig-image" id="a"><td><img alt="106516.fig.005a" src="https://static.hindawi.com/articles/ijap/volume-2013/106516/figures/106516.fig.005a.jpg"/></td></tr><tr class="fig-caption"><td align="center"><table><tr><td><b>(a) </b>Reflection coefficient <i>S </i><sub>11</sub></td></tr></table></td></tr><tr class="fig-image" id="b"><td><img alt="106516.fig.005b" src="https://static.hindawi.com/articles/ijap/volume-2013/106516/figures/106516.fig.005b.jpg"/></td></tr><tr class="fig-caption"><td align="center"><table><tr><td><b>(b) </b>AR and RHCP gain </td></tr></table></td></tr></table>

<table>Effect of the height of air gap <svg height="15.25" id="M80" style="vertical-align:-3.27605pt" version="1.1" viewbox="0 0 20.112499 15.25" width="20.112499" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
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International Journal of Antennas and Propagation

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Figure 5

Figure 5: A Compact Single-Feed Circularly Polarized Microstrip Antenna with Symmetric and Wide-Beamwidth Radiation Pattern 