Uniplanar multiband MIMO antennas for laptop computer applications

Abstract

This paper proposes a uniplanar 2 × 2 MIMO (Multi-Input Multi-Output) antenna suitable for laptop computer applications. The proposed 2×2 MIMO antenna is composed of two identical antenna elements, and each antenna element is composed of a loop structure and a parasitic element. The size of each antenna element is 38 mm × 7 mm, and it has a small ground plane of size 38 mm × 6 mm. The 6-dB impedance bandwidths of each antenna element are able to cover 1677 — 1905 MHz, 2132 — 2587 MHz and 4860 — 6360 MHz, and the isolation between two antenna elements is greater than 17dB. Furthermore, the measured efficiency is more than 45%.