Wearable Quarter-Wave Folded Microstrip Antenna for Passive UHF RFID Applications

<table class="table-group" id="tab2"><tr><td><table class="table"><tr><td class="thead-hr" colspan="4"><hr/></td></tr><tr class="thead"><td align="left">Antenna No.</td><td align="center"><svg height="17.4" id="M65" style="vertical-align:-4.15506pt" version="1.1" viewbox="0 0 16.6875 17.4" width="16.6875" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
<g transform="matrix(.017,-0,0,-.017,.062,12.162)"><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
q34 34 71 253l54 315h-90l-3 12l31 30h70q28 138 90 204q35 37 75 57.5t70 20.5q26 0 45 -14t19 -28z" id="x1D453"></path></g>
<g transform="matrix(.012,-0,0,-.012,10.975,17.2)"><path d="M393 379q-9 -16 -28 -29q-15 -10 -23 -2q-19 19 -36 19q-21 0 -52 -38q-57 -72 -82 -126l-40 -197q-23 -3 -75 -18l-7 7q49 196 74 335q7 43 -2 43q-7 0 -30 -14.5t-47 -37.5l-16 23q37 42 82 73t67 31q41 0 15 -113l-11 -50h4q41 71 85 117t77 46q29 0 45 -26
q13 -21 0 -43z" id="x1D45F"></path></g>
</svg> (MHz)</td><td align="center">−10 dB BW (MHz)</td><td align="center">−10 dB Band (MHz)</td></tr><tr><td class="thead-hr" colspan="4"><hr/></td></tr><tr><td align="left">Antenna 1</td><td align="center">923.07</td><td align="center">6.07</td><td align="center">920.04–926.11</td></tr><tr><td align="left">Antenna 2</td><td align="center">923.11</td><td align="center">6.10</td><td align="center">920.07–926.17</td></tr><tr class="table-tr"><td colspan="4"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

Measured −10 dB bandwidth of fabricated antennas.

International Journal of Antennas and Propagation

tab2

Table 2

Table 2: Wearable Quarter-Wave Folded Microstrip Antenna for Passive UHF RFID Applications 