Dual-Band Circularly Polarized Stack-Ring Antenna

Dual-Band Circularly Polarized Stack-Ring Antenna

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A stack-ring configuration is proposed for designing a dual-band circularly polarized (CP) antenna.Each ring generates different resonant DC Comics Pins frequencies.A good CP performance at both resonant frequencies is achieved by adjusting the relative distance between the two rings.The two operating bands are separated with a small frequency ratio of 1.

07.Measured results show that radiation patterns with good CP characteristics are obtained at the Women T-Shirt two resonant frequencies.