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A novel integrated antenna solution for wireless handheld devices is proposed for the existing 4G standards and upcoming 5G systems for broadband, high data rate communications. The complete antenna system is a unique combination of a multiple‐input–multiple‐output (MIMO) antenna system at microwave frequencies and a millimetre (mm)‐wave antenna array. The MIMO antenna system consists of two reactive loaded monopoles while the mm‐wave array consists of a planar 2 by four slot antennas. The integrated antenna system covers the frequency bands from 1870 to 2530 MHz for 4G standards along with the upcoming 5G mm‐wave band at 28 GHz. In addition, the integrated antenna system is planar and is designed for typical smart phone devices with a standard 60 mm by 100 mm by 0.965 mm back plane. Excellent field correlation values were obtained across the 4G band while realised peak gain values of 4 and 8 dBi were, respectively, measured for the MIMO and mm‐wave antenna arrays. The proposed antenna design may also be useful for other compact implementations that support 4G and 5G communications.
Hussain et al. (Wed,) studied this question.