Design of Multilevel Sequential Rotation Feeding Networks Used for Circularly Polarized Microstrip Antenna Arrays

<table>Simulated <svg height="14.475" id="M4" style="vertical-align:-3.13504pt" version="1.1" viewbox="0 0 21.85 14.475" width="21.85" xmlns="http://www.w3.org/2000/svg">
<g transform="matrix(1.25,0,0,-1.25,0,14.475)">
<g transform="translate(72,-60.42)">
<text transform="matrix(1,0,0,-1,-71.95,63.6)">
<tspan style="font-size: 12.50px; " x="0" y="0">𝑆</tspan>
</text>
<text transform="matrix(1,0,0,-1,-63.82,60.47)">
<tspan style="font-size: 8.75px; " x="0" y="0">1</tspan>
<tspan style="font-size: 8.75px; " x="4.3759999" y="0">1</tspan>
</text>
</g>
</g>
</svg> of the 256-element CP antenna arrays.</table>

International Journal of Antennas and Propagation

fig15

Figure 15

Figure 15: Design of Multilevel Sequential Rotation Feeding Networks Used for Circularly Polarized Microstrip Antenna Arrays 