A UWB Bidirectional Rectangular Ring Antenna Fed by CDM with a Rod and Ridges for Constant Beam Direction

<table>The radiation pattern in <i>yz</i> and <i>xz</i> planes as a function of <svg height="14.8" id="M63" style="vertical-align:-3.21404pt" version="1.1" viewbox="0 0 14.95 14.8" width="14.95" xmlns="http://www.w3.org/2000/svg">
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<tspan style="font-size: 12.50px; " x="0" y="0">ℎ</tspan>
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<tspan style="font-size: 8.75px; " x="0" y="0">𝑢</tspan>
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</svg>  at 10.6 GHz.</table>

International Journal of Microwave Science and Technology

fig11

Figure 11

Figure 11: A UWB Bidirectional Rectangular Ring Antenna Fed by CDM with a Rod and Ridges for Constant Beam Direction 