Intercomparison of Methods for Determination of Resonant Frequency Shift of a Microstrip Patch Antenna Loaded with Hevea Rubber Latex

<table>Variation in (a) magnitude, <svg height="14.85" id="M86" style="vertical-align:-2.21957pt" version="1.1" viewbox="0 0 17.6875 14.85" width="17.6875" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
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</svg> and (b) error magnitude, <svg height="16.299999" id="M87" style="vertical-align:-3.22281pt" version="1.1" viewbox="0 0 178.175 16.299999" width="178.175" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
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<g transform="matrix(.017,-0,0,-.017,102.788,12.013)"><path d="M535 230h-483v50h483v-50z" id="x2212"></path></g><g transform="matrix(.017,-0,0,-.017,116.539,12.013)"><path d="M485 501l-30 -4q-15 64 -35 90q-12 16 -33.5 22t-68.5 6h-74q-21 0 -26.5 -5t-5.5 -26v-458q0 -62 15.5 -78t83.5 -20v-28h-270v28q58 4 72 20t14 78v399q0 61 -13.5 77t-71.5 20v28h433q0 -51 10 -149z" id="x393"></path></g>
<g transform="matrix(.012,-0,0,-.012,125.162,16.088)"><path d="M390 111l17 -21q-34 -45 -80 -73.5t-89 -28.5q-91 0 -146 62t-55 147q0 118 101 195q74 57 149 57h1q59 0 90 -27q16 -14 16 -30q0 -15 -12 -29t-21 -14q-8 0 -19 11q-44 41 -101 41q-52 0 -87.5 -42.5t-35.5 -117.5q0 -49 15 -87t39 -58t49 -30t48 -10q33 0 60.5 12
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<g transform="matrix(.017,-0,0,-.017,173.638,12.013)"><path d="M162 -163h-61v866h61v-866z" id="x7C"></path></g>
</svg> of reflection coefficient of unloaded sensor with frequency.</table>

Journal of Sensors

fig8

Figure 8

Figure 8: Intercomparison of Methods for Determination of Resonant Frequency Shift of a Microstrip Patch Antenna Loaded with Hevea Rubber Latex 