CABLELESS TRIPLE WAVEGUIDE-TO-COAX TRANSITION FOR STANDARD COAX RELAY

摘要

ABSTRACT OF THE DISCLOSUREAn improved switching arrangement 10 forwaveguide is disclosed which comprises, in combination, acoaxial switch 12 and a unified, multi-port, waveguideinterface 14. The coaxial switch 12 has coaxialconnectors of a first type (12a, 12b, 12c) mounted in aparallel pattern with a preestablished center-to-centerspacing. The waveguide interface 14 includes flanges(14a, 14b, 14c), and is preferably formed as a waveguidehousing having a transition plate portion and a coverplate portion. Each port of the unified waveguideinterface includes internal waveguide-to-coax transitionsfor coupling to a respective external connector of asecond type. The external coaxial connectors (16a, 16b,16c) are configured in a parallel pattern with center-to-center spacings equal to the preestablished center-to-center spacings of the coaxial switch connectors (12a,12b, 12c) such that these connectors mate directly withthose of the unified waveguide interface. By so doing,intervening coaxial cables or adaptors are eliminated andrelatively low insertion loss and fast switching speedare exhibited over a relatively broad bandwidth.In an exploded view of the first embodiment,depicted at 20 in Fig. 2, the waveguide-to-coaxtransitions are in the form of multi-stepped impedancetransformers (26a-26e) suitable for bandwidthsapproximating an octave.In an exploded view of the second embodiment,depicted at 30 in Fig. 3, the waveguide-to-coaxtransitions are formed without steps but are constructedand arranged to have a back partition (22, 23, 24) inproximity to an electric probe, each formed by a centerpost 34 surrounded by dielectric 32 which is part of aminiature coaxial connector (16a, 16b, 16c).