Abstract
This article describes three different types of broad multiband linearly and circularly polarized slot antennas (rectangular, circular, and triangular shaped slot) for millimeter wave wireless communication applications. Proposed antennas consist of a slot radiator on the top metal layer and coupled to a rectangular dielectric resonator above the slot. The conventional microstrip-line-feed is used for different shapes of slot antennas. An high frequency structure simulator, finite element method (FEM)-based, three-dimensional full wave electromagnetic solver simulator by ANSYS was used for the design of the proposed antennas. The final antennas were fabricated and their characteristics were measured. The bandwidth of |S11| <−10 dB was extended from 19.5 GHz up to 75 GHz. This band covers most of wireless MM-wave applications, fifth Generation mobile and wireless networks, and the WLAN, WPAN, and W-bands. The simulated and measured radiation efficiency, gain, and radiation pattern of the proposed antennas are presented. The average radiation efficiency and gain over the entire operating band are about 60% and 6 dBi, respectively. These antennas are also low profile and low cost. © 2017 Wiley Periodicals, Inc. Microwave Opt Technol Lett 59:976–983, 2017
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