Abstract
Recently, MIMO transmission system is in practical use for realizing high speed and reliable wireless communications. However, the effectiveness of MIMO transmission is not fully obtained when the multiple antennas are arrayed in a compact mobile terminal because of the shorten distance between the antennas. In order to alleviate the drawbacks, we have proposed a distributed MIMO antenna system which distributes the multiple antennas onto some substrates. This paper shows the effectiveness of the distributed antennas by comparing the antenna performance of the single substrate with four antennas and 2 substrates with 2 antennas in free space and environment around human body, respectively, through the computer simulation.