Compact Circularly Polarized Multiband Antennas for RFID Applications

<table class="table-group" width="800px"><tr class="fig-image" id="a"><td><img alt="783602.fig.004a" src="https://static.hindawi.com/articles/ijap/volume-2014/783602/figures/783602.fig.004a.jpg"/></td></tr><tr class="fig-caption"><td align="center"><table><tr><td><b>(a) </b>Initial microstrip feed line</td></tr></table></td></tr><tr class="fig-image" id="b"><td><img alt="783602.fig.004b" src="https://static.hindawi.com/articles/ijap/volume-2014/783602/figures/783602.fig.004b.jpg"/></td></tr><tr class="fig-caption"><td align="center"><table><tr><td><b>(b) </b>Enhanced microstrip feed line</td></tr></table></td></tr></table>

<table>New dual-band design with microstrip feed line.</table>

International Journal of Antennas and Propagation

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Figure 4

Figure 4: Compact Circularly Polarized Multiband Antennas for RFID Applications 