According to aspects of the disclosure, a multi-feed multi-band MIMO antenna system comprises at least two antennas orthogonally positioned with respect to each other, which are operating over two different frequency ranges; at least two out-of-band resonators coupled with the two antennas respectively; and, at least two other in-band resonators coupled with the two antennas respectively and designed to decrease mutual coupling in the frequency ranges, where the first resonator filters out signals having the second frequency range leaking into a first antenna, while the second resonator filters out other signals having the first frequency range leaking into a second antenna.