Abstract: A bend portion is provided on the inside of a waveguide main body for bending a proceeding direction of a radio wave from a waveguide on the side of a primary feed horn. The radio wave is transmitted with its proceeding direction changed such that an electric field of the radio wave is parallel with a conversion unit. Further provided on the inside of the waveguide main body is a conversion unit including a microstrip line for converting the radio wave from the bend portion to supply electric power.

Abstract: An apparatus for the bending of a flexible conduit having first and second ends includes first and second assemblies which are fixed for relative rotation with the first and second ends. An axis of rotation passes through the first and second assemblies. The apparatus further includes a driven gear fixed for rotation with the first assembly. The driven gear is adapted to cooperate with a drive gear to rotate the first assembly with respect to the second assembly. The first assembly includes a first extendable portion which attaches directly to the first end. Similarly, the second assembly includes a second extendable portion which attaches directly to the second end. The first and second assemblies function to vary the distance between the axis of rotation and the first and second ends as the first assembly is rotated with respect to the second assembly.

Abstract: Disclosed is a directional coupler on a mirror elbow for a microwave transmission line sized to convey very high power. The coupler consists of a main guide with a mirror elbow and at least one secondary guide. The secondary guide is joined by one of its walls to the external surface of the mirror, and the interior of the secondary guide is joined to the interior of the mirror elbow by coupling holes.

Abstract: A circulator including a unique shaped transformer having triangular apexes extending symmetrically into the respective channel and connected to two opposed side walls by coplanar tabs. One of the channel sidewalls has a minimum of three sections to provide a transition between a first linear section extending from the center junction, and a second linear section extending from the port. The opposed sidewall has only two linear sections. The coplanar tabs are connected to the triangular apexes by a portion curved in the coplanar plane. One of the channels includes two opposed linear walls extending between the center and the port with a pair of opposed studs extending from each wall toward each other. These studs are coplanar with the tabs and used for tuning. The studs also have a portion curved in the coplanar plane.

Abstract: A compact waveguide bend structure having high power handling capability, particularly designed for use with TE.sub.01 circular overmoded waveguide, comprises a transition from circular overmoded waveguide to rectangular overmoded waveguide (using the TE.sub.20 mode), followed by a TE.sub.20 mode rectangular waveguide bend, and a transition back to circular overmoded waveguide.

Abstract: An optimized design for circular overmoded waveguide, of both the dielectric lined or sheathed helix types, operating in the microwave and lower millimeter wave bands.

Abstract: An end face light emitting element having a light emitting region on a semiconductor substrate to emit light from the end face thereof has a light waveguide layer between the light emitting region and the substrate with the light emitting region deformed like a staircase having at least two steps.

Abstract: A polarized, mitered corner (32) is constructed using a multiple surface reflector in a square waveguide corner. The multiple surface reflector (34) provides a mitered corner having one effective miter size for the E-plane mode and a different effective miter size for the H-plane mode (42, 44). The surfaces may comprise ridges which are parallel to the E-field in one of the two modes, so that the ridges behave as the reflecting surface for that mode while the backplane, upon which the ridges are formed, serves as the reflecting surface for the other mode. An alternate embodiment wherein the two reflecting surface comprise a plurality of parallel wires, is also disclosed.

Abstract: Universal waveguide joint, provided with at least two waveguide segments (1-7) slidable over each other, whereby one end of at least one of the waveguide segments (1-7) has a convex surface and the end of another respective waveguide segment, slidable over said convex surface, a concave surface.

Abstract: A polarization diplexer which branches from a circular or quadratic waveguide in the axial direction into pairs of rectangular waveguides respectively lying opposite each other with the first pair of two rectangular waveguides lying opposite one another and fed by a symmetrical hybrid junction comprising straight subarms and wherein the first pair are symmetrical. The second pair of rectangular waveguides comprises two rectangular waveguides lying opposite each other which is fed by a second electrically symmetrical hybrid junction having subarms straddled over their broad dimension. The invention can also be utilized as a polarization frequency diplexer.

Abstract: A sharp, mode-transducing bend structure for circular TE.sub.01 overmoded waveguide systems is formed by first transducing from circular TE.sub.01 waveguide into multiport rectangular TE.sub.10 waveguide, performing the desired bend, and then transducing from the multiport rectangular TE.sub.10 waveguide back into the circular TE.sub.01 waveguide.

Abstract: A device for providing a low VSWR match at a bend between two straight circular waveguides has an odd number of at least three circular waveguide sections of approximately equal length along their axes mitered at both of their ends, the length chosen to be an odd multiple of a quarter guide wavelength at the desired operating frequency, and the waveguide sections being mitered so that the device is symmetrical about the bisecting plane of the bend. The ratios of the angles between the adjacent waveguide sections around the bend are approximately binomial coefficients in order to obtain a maximally flat passband.

Abstract: Modular-configured beam waveguide for transmitting microwave energy is formed of a plurality of cascaded modules each module containing a pair of reflecting surfaces, e.g. mirrors with the mirrors prealigned with one another and mounted in a supporting conduit or tube. Each tube or conduit module has a pair of orthogonal axes about which its joints with adjacent modules may rotate, so that with a plurality of such modules interconnected with one another, the overall configuration of serially connected modules may follow substantially any desired path. If desired, a module may be configured of a single L-shaped tube or cylinder at the bend of the L of which there is interiorly disposed an aligned mirror, either flat or curved, e.g. substantially elliptically configured for focussing purposes. The tubular construction may be conductive or nonconductive, its prime purpose being to provide support, rigidity and strength, as well as impermeability to external environmental conditions.

Abstract: A rectangular wave guide H-elbow bent across the narrow side of the wave guide and having its outer corner flattened by a symmetrically angled conducting plane. The present invention provides for the reduction of the reflection factor in such elbow by providing that the relative corner flattening of the wave guide produces a value of x.sub.H /a greater than 0.73 wherein a is the length of the wide side of the wave guide and x.sub.H is the distance from the apex of the wave guide before it is flattened by the conducting plane to the junction of the conducting plane with the narrow side of the wave guide. Furthermore, capacitive loading means of cylindrical form are arranged in the area of the geometrical median w of the bend of the wave guide and being in the form of conductive cylinders 1 or 3 as illustrated in FIGS. 2 and 3.

Abstract: A rectangular waveguide elbow (E-elbow) bent across the broad side of the waveguide with an outer corner symmetrically flattened by conductive flattening or smoothing plane which provides for elimination of undesirable reflections by providing a cross cylindrical bar at the median between the inner corner and the center of the flattening or smoothing plane and wherein the cylindrical bar has an enlarged portion at its center which extends a portion length of the bar. A second embodiment provides a bar which does not have an enlarged portion but wherein the diameter of the bar ratio to the length of the shorter side of the waveguide is at least 0.258.

Abstract: A rectangular waveguide elbow formed with a truncated beveled corner on its outer edge and formed with a conductive cross bar which extends between the narrow walls of the waveguide and which is positioned midway between the inner corner of the waveguide elbow and the center of the truncated wall and further including an extending electrically conducting cylinder mounted on the interior surface of the truncated wall with its center on the diagonal of the truncated wall. The diameters of the conductive cross member and of the conductive metal cylinder are chosen so as to minimize the reflection factor and thus to reduce the reflection factor over a relatively broad-band.

Abstract: A millimeter wave integrated oscillator circuit utilizing an active device uch as an IMPATT or Gunn diode device located in a metallized dielectric cavity which is an extension of a half-height rectangular cross-sectional boron nitride image guide having a metallized under surface solder bonded to a metallic substrate forming an image plane. The diode is energized by means of a bias conductor fed into the cavity through a small slot in the cavity wall. One end of the image guide terminates in the cavity, while the opposite end is tapered along its sides and terminates in a full height hollow metal waveguide section partially including the metallic substrate. The metal waveguide section, moreover, includes flanges for coupling external circuit means to the image guide to metal waveguide transition.

Abstract: In order to cancel unwanted reflected waves in a waveguide system, two micrometer-driven stub tuners are inserted in a waveguide bend. A first tuner is inserted through the outer bend wall to extend axially along one leg of the bend and includes a dielectric rod having a reflecting slug at its tip. Axial movement of the rod permits the variable position of the slug to vary the phase of the wave which it reflects. The second tuner includes a metal rod, which enters the waveguide transversely from the inner wall of the bend, diametrically across from the entrance of the dielectric rod, and permits adjustment of the magnitude of the wave which it reflects.