A compact four-element diversity-antenna array for pda terminals in a mimo system

A four-element diversity-antenna array using four dielectric-loaded folded-loop antennas in a personal digital assistant (PDA) terminal operating at 5.2 GHz for the multiple-input multiple-output (MIMO) application is introduced. The S-parameters and the radiation patterns of the antennas are assessed using a finite-integration technique (FIT) simulation and experimental measurements. The diversity performance is also evaluated by calculating the envelope-correlation coefficients and the mean effective gain (MEG) of the antennas. © 2005 Wiley Periodicals, Inc. Microwave Opt Technol Lett 44: 408–412, 2005; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.20650