A wireless radio communication device comprising: a printed circuit board, PCB; a plurality of antennas coupled to the PCB, each antenna configured to resonate in a selected radio frequency, RF, band of multiple RF bands, and each antenna extending in a reference plane (α) of the PCB or in a plane parallel to the reference plane (α) of the PCB; a plurality of out-of-plane isolation elements conductively coupled to a ground plane of the PCB and extending in a direction transverse to the reference plane (α) of the PCB or the plane parallel to the reference plane (α) of the PCB, each of the plurality of out-of-plane isolation elements being configured to conduct a current in response to excitation of one or more antennas that contributes to at least partially cancelling an RF transmission coupling between the one or more antennas and one or more other antennas of the plurality of antennas; and a plurality of in-plane isolation elements coupled to the PCB and extending in the reference plane (α) of the PCB or the plane parallel to the reference plane (α) of the PCB, the plurality of in-plane isolation elements including a first set of one or more isolation elements and a second set of one or more isolation elements, the first set of one or more isolation elements corresponding to a first RF band arranged between two or more of the plurality of antennas, and the second set of one or more isolation elements corresponding to a second RF band arranged between two or more of the plurality of antennas, and wherein the number of isolation elements in the first set differs from the number of isolation elements in the second set, wherein the selected RF band is the first or the second RF band. a printed circuit board, PCB; a plurality of antennas coupled to the PCB, each antenna configured to resonate in a selected radio frequency, RF, band of multiple RF bands, and each antenna extending in a reference plane (α) of the PCB or in a plane parallel to the reference plane (α) of the PCB; a plurality of out-of-plane isolation elements conductively coupled to a ground plane of the PCB and extending in a direction transverse to the reference plane (α) of the PCB or the plane parallel to the reference plane (α) of the PCB, each of the plurality of out-of-plane isolation elements being configured to conduct a current in response to excitation of one or more antennas that contributes to at least partially cancelling an RF transmission coupling between the one or more antennas and one or more other antennas of the plurality of antennas; and a plurality of in-plane isolation elements coupled to the PCB and extending in the reference plane (α) of the PCB or the plane parallel to the reference plane (α) of the PCB, the plurality of in-plane isolation elements including a first set of one or more isolation elements and a second set of one or more isolation elements, the first set of one or more isolation elements corresponding to a first RF band arranged between two or more of the plurality of antennas, and the second set of one or more isolation elements corresponding to a second RF band arranged between two or more of the plurality of antennas, and wherein the number of isolation elements in the first set differs from the number of isolation elements in the second set, wherein the selected RF band is the first or the second RF band.