A device is comprised of: a first antenna, having a first polarization, operating at a first frequency, and located along a first length from a first end to a second end; and a second antenna, having a second polarization, operating at a second frequency, and located along a second length from a third end to a fourth end, wherein the first polarization is orthogonal to the second polarization, the first antenna is close to the second antenna along the first length and the second length, the first frequency of the first antenna and the second frequency of the second antenna are within the same frequency band, and the first antenna and the second antenna are parallel along the first length and the second length.