Abstract: A stackable connector assembly adapted to receive a flat cable having a plurality of aligned conductors and to be plugged into an array or grid of conductor pins and to interconnect the cable conductors and pin conductors, comprises a top body mounting two rows of contacts on its lower face wherein the conductor-engaging portions of the contacts are offset by rows and a bottom body having openings therein configured to receive a portion of the contacts upon assembly of the connector. The upper face of the bottom body is configured to position the flat cable so that when the top and bottom bodies are assembled the tubular bodies of the contacts in each row will spread and pass between adjacent conductors in the cable, and an offset contact receiving portion having a slot into which the conductor bared of insulation comes to rest will conductively engage them in alternating succession.Interconnection is achieved by passage of the conductor pins in the grid through the tubular bodies of the contacts.

Abstract: A log-periodic longitudinal slot antenna array comprises a dimensionally linearly tapered ridged waveguide having a wall forming part of a metallic ground plane and in which longitudinally elongated and spaced slots are formed. The long axis of each slot is perpendicular to the transverse component of the magnetic field in the waveguide and the slots have dimensions and inner-slot spacings which decrease in increments of a predetermined ratio .tau. in a direction toward the smaller end of the tapered waveguide. The antenna produces a fan-shaped beam with its narrowest radiation pattern lying in a plane perpendicular to a line parallel to the transverse magnetic field component in the waveguide. Such fan-shaped beams are obtainable when the antenna structure is fed at either the large or small ends of the waveguide, or at both ends, in which cases the boresight axes of the resultant beams extend in different directions.