High Gain Dual-Polarization Antenna at 2.4 GHz Wi-Fi ApplicationsPages 197-204
Abstract:
In this paper, a high-gain dual-polarization antenna of size (100×100) mm2 has been designed and analyzed to work at 2.4 GHz for Wi-Fi applications. The adopted antenna is of rectangular shape, which is fed from two ports to provide a dual-polarization operation and increase the possibility of getting the RF signal. The dual-polarization operation is achieved by coupling two different feeds to the rectangular patch at the required resonant frequency of 2.4 GHz. The first feed is an aperture-coupled feed and the second is a capacitive-coupled feed. The simulated reflection coefficients of the two ports are found as S_11 = -18.4887 dB and S_22 = -22.6915 dB at 2.4 GHz. A very high isolation of S_12 = - 63 dB and S_21 = - 60.67 dB are also achieved at the designed frequency of 2.4 GHz. The achieved bandwidths for port-1 and port-2 are found as 191.33 MHz (a percentage value of 7.97%) and 264.06 MHz (a percentage value of 11%) respectively. The maximum gain values of the two ports are found as 8.11 dB and 7.42 dB respectively.
Keywords: Dual-polarization antenna, Microstrip patch antennas, Wireless local area network, Wi-Fi Application, aperture-coupled feed, and capacitive-coupled feed
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