Compact space-multimode diversity stacked circular microstrip antenna array for 802.11n MIMO-OFDM WLANs

The support of MIMO communication in OFDM-WLAN systems conforming to IEEE 802.11n standard requires the design and use of compact antennas and arrays with low correlation ports. In this paper, the design and analysis of a compact space-multimode diversity provisioning stacked circular microstrip patch uniform linear antenna array (SCP-ULA) for MIMO-OFDM WLAN systems and the associated spatial and modal correlation, ergodic spectral efficiency and compactness gains with respect to dipole (DP-ULA) and circular microstrip patch uniform linear arrays (CP-ULA) with dominant-mode operation are presented.