Capacity Bounds and Degrees of Freedom for MIMO Antennas Constrained by Q-Factor

The optimal spectral efficiency and number of independent channels for MIMO antennas in isotropic multipath are investigated when bandwidth requirements placed on the antenna. By posing problem as a convex optimization restricted by port Q-factor semi-analytical expression is formed its solution. simulated method moments solution formulated both structures fed discrete ports, well design regions characterized an equivalent current. It shown that solely dependent eigenvalues so-called energy modes magnitude these analyzed linear dipole array plate with embedded antenna regions. also compared to characteristic validate strategy antennas. performance illustrated through over Q-factor, quantity connected capacity. proposed below given can be used estimate degrees freedom Q-factor.