Abstract: A dielectric constant measurement probe assembly includes a coaxial cable ving a outer electrical conductor and a center electrical conductor extending within the outer conductor and terminating at an end portion which projects beyond an end portion of the outer conductor. An adapter member has a central passage receiving the coaxial cable with the outer conductor of the cable extending through the passage of the adapter member and projecting therefrom. An outer tube has a bore composed of first and second axial sections. The second bore section is smaller in diameter than the first bore section. The adapter member is inserted in the first bore section with the end portion of the coaxial cable outer conductor inserted into the second bore section and making electrical contact therewith such that the outer tube thus constitutes an extension of the outer conductor.

Abstract: In a stripline power divider having a pair of conductive stripes, which are n opposite sides of a dielectric board, overlap at an input port, and then diverge oppositely to a pair of output ports individual to the stripes, the improvement characterized by the divider having an opening extending through the board and between the strips in the region where they diverge, by conductive plating extending from each stripe along the adjacent edge of the opening, and by a plug of elastomeric, lossy material fitted in the opening to electrically connect the plated edges and suppress odd mode fields between the stripes.

Abstract: A connector between a stripline circuit and a coaxial conductor disposed at right angle. The connector provides a low VSWR at relatively high frequencies and is attachable without soldering or separation of the circuit layers and with access from only one side of a first one of the circuit ground plane plates. This plate and an adjacent first outer dielectric circuit board have openings exposing a conductive stripe on a center board. The second plate is exposed by smaller openings in an adjacent second outer board and the center boards, and the connector has a body extending from the coaxial conductor to the second plate. The body has an outer conductor flatly and axially contacting the second plate and having a flange fitted to the smaller openings. The body has a tab extended radially from a central conductor and outwardly of the flange to engage the stripe. The body has a dielectric disposed between its conductors and extending axially between its ends and radially about the tab to the flange periphery.

Abstract: A linearly polarized r.f. radiating slot is formed by the juxtaposed but separated and unshorted edges of two electrically conducting plates disposed above a ground plane. R.f. feedline is connected proximate the slot edges and, preferably, distributed therealong so as to provide a more uniform feed. In a non-resonant embodiment, lumped reactance (preferably plural discrete devices distributed along the slot length) is connected across the slot so as to form a resonant antenna structure. Both the slot and the r.f. feedline are preferably formed by photo etching techniques commonly used for the construction of printed circuits.

Abstract: Variable impedance devices (e.g., series resonant circuits and/or transmission line tuning stubs) are connected to predetermined locations on a microstrip radiator patch for effectively changing the effective resonant dimensions of the antenna as a function of frequency and thereby permitting effective operation over a broad range of frequencies.

Abstract: Variable impedance devices (e.g., series resonant circuits and/or transmission line tuning stubs) are connected to predetermined locations on a microstrip radiator patch for changing the effective resonant dimensions of the antenna as a function of frequency and thereby permitting operation over a broad range of frequencies.

Abstract: A microstrip antenna wherein a cavity or channel is formed in the ground plane conductor to reduce radiation losses and cross-coupling between elements. A shielded embodiment is also disclosed.