Vol. 98

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2019-12-22

Three-Port Pattern Diversity Antenna Module for 5.2 GHz Ceiling-Mounted WLAN Access Points

By Somanatha Pai Swapna, Gulur Sadananda Karthikeya, Shiban Kishen Koul, and Ananjan Basu
Progress In Electromagnetics Research C, Vol. 98, 57-67, 2020
doi:10.2528/PIERC19101605

Abstract

In this paper, a three-port pattern diversity antenna with a Fabry-Perot cavity (FPC) using a partially reflective surface (PRS) for 5.2 GHz Wireless Local Area Network (WLAN) access points is proposed. The topology of three coaxial-fed circular patch antennas provides an initial beam tilt of 15˚. The PRS aperture, at a height of approximately λ/2, is then shaped in such a way for the antenna to radiate at 0˚, +25˚, -25˚, which results in total coverage of 90˚. The antenna system has an impedance bandwidth of 2% ranging from 5.16 GHz-5.25 GHz (90 MHz bandwidth), covering the IEEE 802.11a band, for a gain of 10 dBi throughout the band and across the ports. The shaped PRS structure provides a gain enhancement of 4.5 dB. The mutual coupling between any two ports in the three-port antenna system is less than 17 dB for a port-to-port distance of 0.67λ.

Citation


Somanatha Pai Swapna, Gulur Sadananda Karthikeya, Shiban Kishen Koul, and Ananjan Basu, "Three-Port Pattern Diversity Antenna Module for 5.2 GHz Ceiling-Mounted WLAN Access Points," Progress In Electromagnetics Research C, Vol. 98, 57-67, 2020.
doi:10.2528/PIERC19101605
http://jpier.org/PIERC/pier.php?paper=19101605

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