Circularly Polarized S Band Dual Frequency Square Patch Antenna Using Glass Microfiber Reinforced PTFE Composite

<table>Reflection coefficient performance for the cross-shaped antenna for different values of (a) feed position (<svg height="14.925" id="M49" style="vertical-align:-4.77652pt" version="1.1" viewbox="0 0 17.887501 14.925" width="17.887501" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
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</svg>, <svg height="15.875" id="M50" style="vertical-align:-4.77652pt" version="1.1" viewbox="0 0 18.225 15.875" width="18.225" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
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<g transform="matrix(.012,-0,0,-.012,9.9,12.712)"><path d="M619 670q0 -13 -9 -26t-18 -19q-13 -10 -25 2q-36 38 -66 38q-31 0 -54.5 -50t-45.5 -185h120l-20 -31l-107 -12q-23 -138 -57 -293q-27 -122 -55 -184.5t-75 -109.5q-60 -61 -114 -61q-25 0 -47.5 15t-22.5 31q0 17 31 44q11 8 20 -1q10 -11 31 -19t35 -8q26 0 47 19
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</svg>) and (b) <svg height="16.3125" id="M51" style="vertical-align:-3.13504pt" version="1.1" viewbox="0 0 15.8875 16.3125" width="15.8875" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
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</svg> and (c) <svg height="12.4375" id="M52" style="vertical-align:-0.15048pt" version="1.1" viewbox="0 0 9.5625 12.4375" width="9.5625" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
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</svg>.</table>

The Scientific World Journal

fig4

Figure 4

Figure 4: Circularly Polarized S Band Dual Frequency Square Patch Antenna Using Glass Microfiber Reinforced PTFE Composite 