Compact loaded slot ring antenna for circularly polarised radiation |
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| Authors: | Xue Q. Qu S.-W. |
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| Affiliation: | State Key Lab. of Millimeter Waves, City Univ. of Hong Kong, Kowloon, China; |
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| Abstract: | A novel slot-ring circularly polarised antenna is reported. With sectorial slots loading, the axial ratio (AR) bandwidth is increased and the circumference of the slot-ring is also reduced to 0.5 lambda0 (lambda0 is the free-space wavelength at the centre frequency). The antenna features a 22.4% impedance bandwidth for |S 11| les -10 dB, a 10.6% bandwidth for AR les 3 dB and stable radiation patterns over the whole operating band. |
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