Abstract: A microstrip switch having a conductive path comprises a grounded waveguide cavity-defining enclosure. A movable switch member having first and second, separated, electrically conductive segments is mounted within a path-interrupting gap for movement between an open position and a closed position. The first conductive segment is always electrically coupled to the cavity enclosure. The second conductive segment comprises a cantilevered, springy member for contact with the conductive path on either side of the gap when the switch is closed. Single-throw and double-throw embodiments are described.

Abstract: A programmable mechanical delay line is disclosed comprising one or more lengths of axially movable co-axial cable. The inner and outer conductors of the cable length are respectively accepted within cavities having electrically conductive inner walls. The conductors are electrically coupled to the cavity walls by respective toroidal springs which circumvent the conductors and which contact the cavity walls at their outer diameter. The minimal surface contact by the toroidal springs reduces wear and friction. The reduction in friction substantially eliminates overshoot which previously resulted from attempts to rapidly reposition the coaxial cables. Consequently, the disclosed device provided very rapid, repeatable, and accurate adjustment as different amounts of signal delay are desired.