Vol. 55

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2015-01-15

Dual-Band Dual-Sense Unidirectional Circularly Polarized Antenna with CPW-Fed for Wireless Applications

By Xiaoxiang Ding, Zhiqin Zhao, Lin Zhou, Sani Mubarak Ellis, and Zai-Ping Nie
Progress In Electromagnetics Research C, Vol. 55, 167-177, 2014
doi:10.2528/PIERC14111701

Abstract

A novel dual-band unidirectional circularly polarized (CP) antenna fed by coplanar waveguide (CPW) for wireless applications is proposed. The antenna configuration consists of a ring-shaped ground, an F-shaped central strip, and a spherical cap reflector. The longer and shorter branches of the F-shaped central strip help to produce radiant waves at lower and higher frequencies. The CP characteristics are achieved through adding two solid arcs and a grounded tuning stub. Both simulated and measured results are given and analyzed. Measurement results show a 10 dB return loss with a bandwidth of 56% (2.15 GHz-3.83 GHz) at 2.45 GHz (ISM), and a bandwidth of 42.6% (4.67 GHz-7.2 GHz) at 5.8 GHz (HiperLAN), a 3 dB axial ratio bandwidth of 15.1% (2.25 GHz-2.62 GHz), 4.1% (5.67 GHz-5.91 GHz). The maximum gain within the two CP bands are 8.7 dBic and 10.2 dBic, respectively.

Citation


Xiaoxiang Ding, Zhiqin Zhao, Lin Zhou, Sani Mubarak Ellis, and Zai-Ping Nie, "Dual-Band Dual-Sense Unidirectional Circularly Polarized Antenna with CPW-Fed for Wireless Applications," Progress In Electromagnetics Research C, Vol. 55, 167-177, 2014.
doi:10.2528/PIERC14111701
http://jpier.org/PIERC/pier.php?paper=14111701

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