Compact and Low Coupled Monopole Antennas for MIMO System Applications

A MIMO antenna system with high isolation for smart phone applications

“…Antenna engineers are increasingly required to co-locate a number of antennas in the confined space of a smartphone, while maintaining high isolation and decoupling between elements, often including the radiating ground plane [4,5]. Different methods such as defected ground method, decoupling network, parasitic elements method, and polarization decoupling method have been presented in the literature to decrease mutual coupling in closely located antennas in MIMO systems [6][7][8][9][10]. Among these techniques, inserting decoupling slots into the system ground plane or defected ground structures, as proposed by the authors in [6] is a favourable technique.…”

A Broadband Technique for a Decoupling Network in a Compact Antenna Array in a Mimo System

“…Finally, in [23][24][25][26], a decoupling network (DN) was proposed for MIMO systems in order to obtain high isolation between two antenna ports within a small space. DNs have been frequently used due to their advantage of spatial efficiency, which is particularly important for mobile devices.…”

Multiband Handset Antenna Analysis Including Lte Band Mimo Service

“…Moreover, when mobile handset antennas operate at a lower frequency such as 746 ∼ 787 MHz, the MIMO antenna element itself and the ground plane can be similarly operated as two arms of a half wavelength dipole, so that the radiation pattern and isolation between them can be dependent upon the current distribution of the ground plane [8]. Various techniques have been studied for the enhancement of isolation between two closely mounted MIMO antennas [9][10][11][12][13][14][15]. An additional coupling element [9,10] or decoupling network [11,12] between the two antenna elements is used to improve isolation between the two antennas.…”

“…Various techniques have been studied for the enhancement of isolation between two closely mounted MIMO antennas [9][10][11][12][13][14][15]. An additional coupling element [9,10] or decoupling network [11,12] between the two antenna elements is used to improve isolation between the two antennas. Although isolation can be enhanced by artificially generated additional coupling or decoupling current paths, these can be limited on a lower frequency band volume and bandwidth.…”