Title :
Evaluation of a New Wideband Slot Array for MIMO Performance Enhancement in Indoor WLANs
Author :
Costa, Jorge R. ; Lima, Eduardo B. ; Medeiros, Carla R. ; Fernandes, Carlos A.
Author_Institution :
Inst. de Telecomun., IST, Lisbon, Portugal
fDate :
4/1/2011 12:00:00 AM
Abstract :
A new wideband compact slot antenna array for indoor WLAN access points (AP) is described, covering several wireless communication services from 2.4 to 4.8 GHz, that is especially designed to enhance MIMO system capacity. The array topology provides both spatial and polarization diversity. Despite very close packing of the array elements, these exhibit very low mutual coupling and low cross-polarization, greatly favoring MIMO diversity gain. A detailed MIMO performance comparison is conducted against a common array of patches in indoor environment, based both on simulation and indoor measurements: the new antenna shows a clear improvement in terms of channel capacity.
Keywords :
MIMO communication; UHF antennas; broadband antennas; channel capacity; diversity reception; indoor radio; microstrip antenna arrays; slot antenna arrays; wireless LAN; MIMO diversity gain; MIMO system capacity enhancement; and low cross-polarization; array topology; channel capacity; frequency 2.4 GHz to 4.8 GHz; indoor WLAN access points; indoor measurements; low mutual coupling; polarization diversity; spatial diversity; wideband compact slot antenna array; wireless communication services; Antenna arrays; Antenna measurements; Antenna radiation patterns; Arrays; MIMO; WiMAX; Multiple input multiple output (MIMO) array; printed wideband antenna; spatial and polarization diversity; tapered slot antenna; wireless local area network (WLAN);
Journal_Title :
Antennas and Propagation, IEEE Transactions on
DOI :
10.1109/TAP.2011.2109685
