A matching architecture for use in an amplifier arrangement (1) to amplify fragmented frequency slots comprises a number of RF signal input matching strip lines ( 1 IN(f 1 ) and 1 IN(f 2 )) branching from a common RF signal input line ( 1 i ) and connected in common to an RF input terminal lug (TRL IN ) of a RF power transistor (TR). A first and second RF signal input matching strip line ( 1 IN(f 1 ) and 1 IN(f 2 )) are each configured for impedance matching to a respective wavelength (λf1, λf2) of a number of different wavelengths (λf1, λf2) of the RF signal and are respectively coupled to at least one blocking means (C 11 , C 12 , C 21 , C 22 ), each with a length of λ/4 according to a wavelength (λf2, λf1) of the RF signal not travelling through the respective RF signal input matching strip line (1 OUT(f-ι) and 1 OUT (f2)). At the output side the amplifier arrangement (1 ) further comprises a number of RF signal output matching strip lines ( 1 OUT(f 1 ) and 1 OUT(f 2 )) being in common connected to an RF output terminal lug (TRL OUT ) of the RF power transistor (TR) and further respectively coupled to at least one blocking means (C 13 ,C 14 ;C 23 ,C 24 ) each with a length of λ/4 according to a wavelength (λf2, λf1) of the RF signal not travelling through the respective output matching strip line ( 1 OUT(f 1 ) and 1 OUT(f 2 )).