Near-Field HF-RFID and CMA-Based Circularly Polarized Far-Field UHF-RFID Integrated Tag Antenna

<div>The eigenvalues of modes <i>J</i><sub>1</sub> and <i>J</i><sub>2</sub> and characteristic angle difference between modes <i>J</i><sub>1</sub> and <i>J</i><sub>2</sub>.</div>

International Journal of Antennas and Propagation

fig7

Figure 7

Figure 7: Near-Field HF-RFID and CMA-Based Circularly Polarized Far-Field UHF-RFID Integrated Tag Antenna 