In this paper, an eight-port antenna array operating in the 2.6 GHz band (2550-2650 MHz) for a multi-input multi-output (MIMO) mobile terminal is presented. The design is composed of four pairs of compact dual-polarized slot antennas that are symmetrically placed at the corners of a mobile-phone mainboard. Each antenna pair consists of miniaturized petal-shaped slot resonators fed by two independent microstrip-feeding lines, thus facilitating radiation pattern and polarization diversity: when acting together, they facilitate multi-channel MIMO operation. The design offers good isolation, dual polarization and full radiation coverage in a smartphone sized package. A low-cost FR-4 dielectric (ε = 4.4, δ = 0.02, and h = 0.8 mm) with a dimension of 75×150 mm2 is used as the PCB substrate. The characteristics of the smartphone antenna are examined using both simulations and measurements.
Naser Ojaroudi Parchin,
Haleh Jahanbakhsh Basherlou,
Yasir I. A. Al-Yasir,
Ahmed M. Abdulkhaleq,
Raed A. Abd-Alhameed,
Peter S. Excell,
"Eight-Port MIMO Antenna System for 2.6 GHz
LTE Cellular Communications," Progress In Electromagnetics Research C,
Vol. 99, 49-59, 2020. doi:10.2528/PIERC19111704
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