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A DUAL-MODE APERATURE-COUPLED STACK ANTENNA FOR WLAN DUAL-BAND AND CIRCULAR POLARIZATION APPLICATIONS

By J.-C. Liu, B.-H. Zeng, C.-Y. Liu, H.-C. Wu, and C.-C. Chang

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Abstract:
A compact stack antenna consisting of square loop resonators, aperture couples, feed line and the perturbation for dual-band and circular polarization (CP) applications is proposed in this paper. This perturbation applies both dual-mode and orthogonal mode effects existing in the square loop resonator to present wide-band and CP characteristics simultaneously. The stack antenna presents the desired bands of 2.46 GHz with bandwidth (BW) = 160 MHz (6.58%) and 5.28 GHz with BW = 450 MHz (8.52%). The circular polarizations for dual-band are demonstrated with axial ratio (AR) spectrum and orthogonal modes. The proposed antenna is successfully simulated and measured with frequency responses, radiation patterns and current distributions.

Citation:
J.-C. Liu, B.-H. Zeng, C.-Y. Liu, H.-C. Wu, and C.-C. Chang, "A Dual-Mode Aperature-Coupled Stack Antenna for WLAN Dual-Band and Circular Polarization Applications," Progress In Electromagnetics Research C, Vol. 17, 193-202, 2010.
doi:10.2528/PIERC10100902

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