Abstract: An N.times.M electrical connector suitable for use at microwave frequencies comprises a first set of N insulating parallel substrates each containing M notches with adjacent planar conductors and a second set of M parallel substrates having up to N spaced-apart conductors, wherein the notch-to-notch and conductor-to-conductor spacing of the first set matches the substrate-to-substrate spacing of the second set and vice versa, so that when the second set is pushed into the notches of the first set, each notch and associated conductor on the first set aligns with related conductors on the second set of "L" shaped relation. One or more spring contacts at each intersection provide positive electrical connection between the proximate conductors. The arrangement is especially useful for microwave systems since multiple signal lines and ground planes may be connected simultaneously without interference or substantial electrical discontinuity.

Abstract: A broad-band lumped element ring hybrid is comprised of a .pi. equivalent of a transmission line which is coupled to an electric ground through either a plurality of capacitors or plurality of inductors. The plurality of capacitors which are coupled to ground are coupled together with an inductor, while the plurality of inductors which are coupled to ground are coupled together with a capacitor. A plurality of tank circuits are coupled to the .pi. equivalent to broaden the bandwidth of the ring hybrid. Each tank circuit comprises an inductor and a capacitor.

Abstract: An apparatus and method is disclosed that produces a high powered sub-microsecond pulse. The present invention utilizes a set of parallel high speed switches and drivers to switch a Darlington Pulse forming network that is charged by a resonant charging circuit. The Darlington Pulse forming network produces a negative pulse which is inverted in a coaxial inverter and then amplified in a coaxial line transformer to provide the high powered short duration pulse signal.

Abstract: An apparatus and method is disclosed for a balanced mixer having a fifth port capable of removing the intermediate frequency and the upper sideband frequency while acting as an open circuit to the RF and local oscillator input signals. The upper sideband signal is then dissipated in a distributed load designed so as not to reflect the upper sideband signal back into the transmission ring. Thus, a balanced mixer is disclosed that provides IF signals and removes other unwanted signals without corrupting later signals.

Abstract: A compact power detector apparatus comprises a unique adjustable directional coupler and a power detector circuit integrated therewith. The adjustable coupler comprises a pair of stripline conductors, one of which is carried on a turntable. The coupling distance between the conductors varies as the turntable rotates. The power detector circuit is also carried on the turntable, thus avoiding the need for flexible interconnections. The output from the detector circuit is taken from a connector substantially in the center of the turntable.