A network device comprising: a first single band dual concurrent radio module configured to transmit and receive first radio signals in a first frequency band; a first antenna array comprised of a first plurality of polarized antennas (306-1, 306-n) and configured to transmit and receive the first radio signals for the first single band dual concurrent radio module in the first frequency band; a second single band dual concurrent radio module configured to transmit and receive second radio signals in the first frequency band concurrently with the first single band dual concurrent radio module ; a second antenna array comprised of a second plurality of polarized antennas (308-1, 308-n) and configured to transmit and receive the second radio signals for the second single band dual concurrent radio module in the first frequency band; a main printed circuit board, wherein the first plurality of polarized antennas (306-1, 306-n) are positioned at positions 30 mm out from edges of the main printed circuit board along a plane that extends out from the edges of the main printed circuit board; wherein the first plurality of polarized antennas (306-1, 306-n) are orthogonally polarized with respect to the second plurality of polarity antennas (308-1, 308-n) and are vertically polarized with respect to the network device ; and wherein, in operation, the first single band dual concurrent radio module and the second single band dual concurrent radio module function concurrently using the first frequency band while at least 40 dB of antenna isolation is maintained between the first antenna array and the second antenna array . a first single band dual concurrent radio module configured to transmit and receive first radio signals in a first frequency band; a first antenna array comprised of a first plurality of polarized antennas (306-1, 306-n) and configured to transmit and receive the first radio signals for the first single band dual concurrent radio module in the first frequency band; a second single band dual concurrent radio module configured to transmit and receive second radio signals in the first frequency band concurrently with the first single band dual concurrent radio module ; a second antenna array comprised of a second plurality of polarized antennas (308-1, 308-n) and configured to transmit and receive the second radio signals for the second single band dual concurrent radio module in the first frequency band; a main printed circuit board, wherein the first plurality of polarized antennas (306-1, 306-n) are positioned at positions 30 mm out from edges of the main printed circuit board along a plane that extends out from the edges of the main printed circuit board; wherein the first plurality of polarized antennas (306-1, 306-n) are orthogonally polarized with respect to the second plurality of polarity antennas (308-1, 308-n) and are vertically polarized with respect to the network device ; and wherein, in operation, the first single band dual concurrent radio module and the second single band dual concurrent radio module function concurrently using the first frequency band while at least 40 dB of antenna isolation is maintained between the first antenna array and the second antenna array . <EOS>