Malherbe, J. A. G. Microwave transmission line couplers / J.A.G. Malherbe. - Norwood : Artech House, c1988. - xi, 219 p. : ill. ; 24 cm. Includes index Includes bibliographies and index. ISBN: 0890063001 (hbk.) Subjects--Topical Terms: Directional couplers. LC Class. No.: TK7871.65