TY - BOOK AU - Sporleder,F AU - Unger,H.-G.(Hans-George) TI - Waveguide tapers transitions and couplers SN - 0906048168 PY - 1979/// CY - Stevenage PB - Peregrinus for the Institution of Electrical Engineers KW - Directional couplers KW - Wave guides N1 - Includes bibliographical references and index ER -