The MIMO cube - a compact MIMO antenna

Characterization of MIMO Antennas Using Spherical Vector Waves

“…5 for N s = 12. It is seen that the MIMO cube has an average of approximately 11 independent channels for an SNR of 100 if the cube is close to λ/2, cf., [6]. The results are similar as for the tetrahedron.…”

“…It consists of three orthogonal electric dipoles [1,4]. To avoid the problem of feeding the dipoles at the same point in space and at the same time utilize the magnetic dipoles, a MIMO cube [6] or a MIMO tetrahedron can be used. These antennas consist of 12 and 6 electrical dipoles centered on the edges of a cube and a tetrahedron, respectively.…”

Compact Dual-Frequency Microstrip Antenna Array With Increased Isolation Using Neutralization Lines

“…Many techniques to reduce the mutual coupling or to increase the port isolation of antenna arrays have been proposed in literatures [3][4][5][6][7][8][9][10][11][12]. The element isolation can be increased by properly arranging the antennas in different orientations, for example, an antenna cube [3]. The parasitic elements can be added into the array to create reverse coupling to reduce the mutual coupling among array elements [4,5].…”

Compact Multiport Array With Reduced Mutual Coupling

“…Mutual coupling reduction can be done by changing the orientations of the antennas to have orthogonal radiation patterns and polarizations [7,8]. An alternate method to isolate the highly coupled antennas is by using hybrid couplers [9,10] to form the modedecomposition network between the antennas and their driving ports.…”