A linear double distributed active transformer including an input transformer set (IN-DAT) and an output transformer set (OUT-DAT) and a plurality of active stages (DA1, DAN; DA1, DA2, DA3, DA4) with each active stage being set between a corresponding transformer of a plurality of input transformers (T11, ..., T1N; T11, T12, T13, T14) in the input transformer set (IN-DAT) and a corresponding transformer of a plurality of output transformers (T21, ..., T2N; T21, T22, T23, T24) in the output transformer set (OUT-DAT), wherein said input transformer set (IN-DAT) consists of a slab transformer with a single linear primary slab coupled with a plurality of secondary slabs (12 1 , ..., 12 N ; 12 1 , 12 2 , 12 3 , 12 4 ), and each transformer of said plurality of input transformers being obtained by said single linear primary slab with a respective secondary slab of said plurality of secondary slabs (12 1 , ..., 12 N ; and said output transformer set (OUT-DAT) consists of a slab transformer with a single linear secondary slab coupled with a plurality of primary slabs (14 1 , ..., 14 N ; 14 1 , 14 2 , 14 3 , 14 4 ), and each transformer of said plurality of output transformers being obtained by a respective primary slab of said plurality of primary slabs with said single linear secondary slab ; wherein: - the single linear primary slab of said input transformer set (IN-DAT) extends between first and second ends that are electrically connected to a ground reference and a first intermediate point between said first and second ends is electrically connected to an intermediate signal input port (IN) thereby providing input signal distribution over said plurality of secondary slabs (12 1 , ..., 12 N ; 12 1 , 12 2 , 12 3 , 12 4 ) and said plurality of active stages (DA1, DAN; DA1, DA2, DA3, DA4), - the single linear secondary slab of said output transformer set (OUT-DAT) extends between third and fourth ends that are electrically connected to a ground reference and a second intermediate point between said third and fourth ends is electrically connected to an intermediate signal output port (OUT) thereby providing output signal combination from said plurality of primary slabs (14 1 , ..., 14 N ; 14 1 , 14 2 , 14 3 , 14 4 ) and said plurality of active stages (DA1, DAN; DA1, DA2, DA3, DA4), and - said single linear primary slab, said plurality of secondary slabs, said single linear secondary slab, and said plurality of primary slabs (10; 16; 12 1 , ..., 12 N ; 12 1 , 12 2 , 12 3 , 12 4 ; 14 1 , ..., 14 N ; 14 1 , 14 2 , 14 3 , 14 4 ) include electrically conductive material. - the single linear primary slab of said input transformer set (IN-DAT) extends between first and second ends that are electrically connected to a ground reference and a first intermediate point between said first and second ends is electrically connected to an intermediate signal input port (IN) thereby providing input signal distribution over said plurality of secondary slabs (12 1 , ..., 12 N ; 12 1 , 12 2 , 12 3 , 12 4 ) and said plurality of active stages (DA1, DAN; DA1, DA2, DA3, DA4), - the single linear secondary slab of said output transformer set (OUT-DAT) extends between third and fourth ends that are electrically connected to a ground reference and a second intermediate point between said third and fourth ends is electrically connected to an intermediate signal output port (OUT) thereby providing output signal combination from said plurality of primary slabs (14 1 , ..., 14 N ; 14 1 , 14 2 , 14 3 , 14 4 ) and said plurality of active stages (DA1, DAN; DA1, DA2, DA3, DA4), and - said single linear primary slab, said plurality of secondary slabs, said single linear secondary slab, and said plurality of primary slabs (10; 16; 12 1 , ..., 12 N ; 12 1 , 12 2 , 12 3 , 12 4 ; 14 1 , ..., 14 N ; 14 1 , 14 2 , 14 3 , 14 4 ) include electrically conductive material. <EOS>