Compact Circularly Polarized Multiband Antennas for RFID Applications

Figure 9

Current distribution at 2.4 and 5.25 GHz resonant frequencies for different phases.

(a) 2.4 GHz, phase = 0°

(b) 2.4 GHz, phase = 90°

(c) 2.4 GHz, phase = 180°

(d) 2.4 GHz, phase = 270°

(e) 5.25 GHz, phase = 0°

(f) 5.25 GHz, phase = 90°

(g) 5.25 GHz, phase = 180°

(h) 5.25 GHz, phase = 270°