Circularly polarized annular-ring slot antenna for WiMAX 2.3 GHz and WLAN 2.4 GHz applications

Chow-Yen-Desmond Sim,Tuan-Yung Han,Horng-Dean Chen,Jeen-Sheen Row,Ming-Hsuan Chang

doi:10.1109/aps.2014.6904852

Circularly polarized annular-ring slot antenna for WiMAX 2.3 GHz and WLAN 2.4 GHz applications

Chow-Yen-Desmond Sim, Tuan-Yung Han + Show 3 more

https://doi.org/10.1109/aps.2014.6904852

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Publication Date: Jul 1, 2014

Citations: 7

Affiliation: Feng Chia University, National Taitung University, National Kaohsiung Normal University, National Changhua University of Education

#Axial Ratio Bandwidth #Annular-ring Slot Antenna + Show 8 more

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Abstract

The design of a novel microstrip-line fed circularly polarized (CP) annular-ring slot antenna (ARSA) is studied. To achieve CP radiation with broad axial ratio (AR) bandwidth that can cover both the WiMAX 2.3 GHz and WLAN 2.4 GHz bands, a simple method of loading an inverted L-shaped slot into the bottom section of the ARSA is proposed. Measured results show that the proposed antenna can exhibit wide 10-dB impedance bandwidth of 48% (1.69-2.76 GHz), and its corresponding 3-dB AR bandwidth was approximately 8% (2.29-2.48 GHz).

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