00957nam0-22003251i-450-99000050658040332120080205133447.00-906048-16-8000050658FED01000050658(Aleph)000050658FED0100005065820020821d1979----km-y0itay50------baenga-------001yyWaveguide tapers transitions and couplersF. Sporleder, H.-G. UngerLondon ; New YorkPeter Peregrinusc1979302 p.ill.23 cmIEE electromagnetic waves series6Guide d'onda621.381'331Sporleder,F.284882Unger,H.-G.422255ITUNINARICAUNIMARCBK99000050658040332110 E III 197L/27 CNRDINELDINELWaveguide tapers transitions and couplers330627UNINA