Design, Fabrication, and Test of a Novel Broadband Dual-Polarized Microstrip Antenna for WLAN Applications

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A dual-polarized dual-layer wideband microstrip antenna is presented.‎ Dual orthogonal linear polarization and enhanced isolation between two ports are achieved by employing two radiating patches perpendicular to each other and printed on two separate substrates.‎ Broadband behavior of the antenna is realized by using two wideband double-sided printed strip dipole and angular ring as radiating patches along with wideband baluns as feeding system.‎ The patches are connected to baluns with two separate twin-lead transmission lines.‎ Moreover, to improve the impedance bandwidth of the strip dipole significantly, adiamond-shape parasitic patch is artily incorporated into the top side of the upper layer ofthe antenna.‎ The proposed antenna can easily be employed in large-scale arrays thanks to the feeding system of the patches.‎ A prototype is fabricated to verify the simulation results where the measurement results show the −10 dB impedance bandwidths of 40% (4.‎3–6.‎5 GHz) and 43% (4.‎2–6.‎5 GHz) at port #1 and port #2, respectively.‎ Besides, the isolation between two ports and the radiation gain are obtained around 35 dB and 9 dBi, respectively, which are useful for WLAN applications.‎

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جمعه, ۱۱ آبان, ۱۳۹۷ - ۱۱
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پژوهشکده فناوری ارتباطات
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