An active electronically scanned array, AESA, card comprising: a printed wiring board, PWB, (101; 101') having a top surface and a bottom surface; and one or more monolithic microwave integrated circuits, MMICs, disposed on the top surface of the PWB; wherein the PWB comprises: a first set of metal layers (202a-202c) used to provide RF signal distribution,; a second set of metal layers (202c-202e) disposed below the first set of metal layers and used to provide digital logical distribution; a third set of metal layers (202f-202o) disposed below the second set of metal layers and used to provide power distribution; a fourth set of metal layers (202p-202t) disposed below the third set of metal layers and used to provide RF signal distribution,; a plurality of metal conduits (212a-212l), each electrical conduit coupling one of the plurality of layers to another one of the plurality of layers; an RF via (210a, 210b) having a first end coupled to a first metal conduit (212c, 212i) of the plurality of metal conduits and a second end opposite to the first end coupled to a second metal conduit (212d, 212j) of the plurality of metal conduits, wherein the first and second metal conduits are coupled to the first and fourth sets of metal layers respectively and the RF via extends through metal layers used for power distribution; wherein the PWB comprises at least one transmit/receive, T/R, channel used in an AESA; wherein the AESA card is configured to radiate RF signals outwardly from the AESA card in a first direction, the first direction being defined by a direction from the top surface to the bottom surface. a printed wiring board, PWB, (101; 101') having a top surface and a bottom surface; and one or more monolithic microwave integrated circuits, MMICs, disposed on the top surface of the PWB; wherein the PWB comprises: a first set of metal layers (202a-202c) used to provide RF signal distribution,; a second set of metal layers (202c-202e) disposed below the first set of metal layers and used to provide digital logical distribution; a third set of metal layers (202f-202o) disposed below the second set of metal layers and used to provide power distribution; a fourth set of metal layers (202p-202t) disposed below the third set of metal layers and used to provide RF signal distribution,; a plurality of metal conduits (212a-212l), each electrical conduit coupling one of the plurality of layers to another one of the plurality of layers; an RF via (210a, 210b) having a first end coupled to a first metal conduit (212c, 212i) of the plurality of metal conduits and a second end opposite to the first end coupled to a second metal conduit (212d, 212j) of the plurality of metal conduits, wherein the first and second metal conduits are coupled to the first and fourth sets of metal layers respectively and the RF via extends through metal layers used for power distribution; wherein the PWB comprises at least one transmit/receive, T/R, channel used in an AESA; wherein the AESA card is configured to radiate RF signals outwardly from the AESA card in a first direction, the first direction being defined by a direction from the top surface to the bottom surface. a first set of metal layers (202a-202c) used to provide RF signal distribution,; a second set of metal layers (202c-202e) disposed below the first set of metal layers and used to provide digital logical distribution; a third set of metal layers (202f-202o) disposed below the second set of metal layers and used to provide power distribution; a fourth set of metal layers (202p-202t) disposed below the third set of metal layers and used to provide RF signal distribution,; a plurality of metal conduits (212a-212l), each electrical conduit coupling one of the plurality of layers to another one of the plurality of layers; an RF via (210a, 210b) having a first end coupled to a first metal conduit (212c, 212i) of the plurality of metal conduits and a second end opposite to the first end coupled to a second metal conduit (212d, 212j) of the plurality of metal conduits, wherein the first and second metal conduits are coupled to the first and fourth sets of metal layers respectively and the RF via extends through metal layers used for power distribution; wherein the PWB comprises at least one transmit/receive, T/R, channel used in an AESA; wherein the AESA card is configured to radiate RF signals outwardly from the AESA card in a first direction, the first direction being defined by a direction from the top surface to the bottom surface.