Abstract: A process for producing monolithically integrated multifunction circuit arrangements. A substrate having an integrated circuit formed therein is provided, and further multilayer semiconductor components and the corresponding electrical leads are arranged on top of one another on the substrate surface. The multilayer semiconductor components and the electrical leads are produced from an epitaxially grown semiconductor layer sequence.

Abstract: A method for the equalization of dispersive, linear or approximately linear channels for the digital signal transmission by using an adaptive matched filter matched to the entire transmission channel, which converts the received signal into a time-discrete signal sequence and during this process determines the optimum sampling times by itself, and by the use of a subsequent equalizer which equalizes the signal sequence in sections by an iteration method with relaxation is disclosed.

Abstract: A branch circuit connection and a fastening mechanism for auxiliary switches for insertable switches used with movable main contact carriers. The branch circuit connection is composed of a female connector strip disposed at the side wall of the enclosure for the insertable switch and movable main contact carrier. A corresponding male connector strip is rigidly fastened to an insertable switch and a lever mechanism coupled to the main contact carrier is provided for lowering, raising or causing the female connector strip to dwell in dependence of the OFF-TEST-ON operating condition of the insertable switch. The auxiliary switches are received in a housing which is fastened to a wall of the enclosure and are controlled by way of a slide which is articulated to the movable main contact carrier.

Abstract: A radar camouflage material for reducing the radar back-scatter cross section of a target object including a thin layer or foil of dielectric material provided with a plurality of individual antenna elements of the minimum-scatter antenna type, preferably ring antennas, which are loaded purely reactively.

Abstract: A new method is presented which converts the phases and frequencies of HF and microwave signals into sequences of digital words. This phase quantization is 10 times faster compared to conventional amplitude quantization by means of extremely fast A/D converters. In this method, n parallel shifted signal phases are initially derived from the HF signals by means of a signal phase generator, and in a bank of comparators these signal phases are then converted into rectangular oscillations (sequences). A subsequent digital sampling of these sequences then furnishes the phases of the HF signals as digital values at the output of the circuit.

Abstract: The invention relates to CCD Si detector configuration with a semiconductor sensibilizator. The spectral range of the detectors extends from 0.4 .mu.m to 1.6 .mu.m. The CCD Si detector configuration is produced as integrated structure so that a large picture element number can be achieved. The semiconductor layer sequence of the semiconductor sensibilizator is grown using differential molecular beam epitaxial growth techniques.

Abstract: As a device for straightening of letters and similar flat transported articles upon passage from a free wheeling section with a bottom conveyor belt to a cover belt section, whereby the letters are transported upright on a lengthwise edge and generally at the transition to the cover belt section are shifted in the vertical direction between the side belts of the free wheeling section by running against the bottom belt, a guide plate is provided at either side in the letter displacement zone, the plate has a step extending parallel in the direction of transport of the side belts and has a width equalling the thickness of a side belt, for the purpose of avoiding tearing of the letter flaps. The guide plates extend to the upper edge of the side belts and, by the flutter-free movement of the side belts, achieve a smooth sliding of the letters between the side belts.

Abstract: In an imprinting device including a pressure cylinder and a movable counterpressure cylinder, the counterpressure cylinder is disposed opposite the pressure cylinder and is elastically attached to a rocker which is pivotal about a point. The device includes at least one electro-dynamic actuator so as to vary the axial distance between the pressure cylinder and the counterpressure cylinder in that the actuators move the rocker about its pivot point.

Abstract: A system for connecting light waveguide buses and coaxial cable buses operating according to the token passing principle. The coaxial cable buses are connected with electrical terminal access devices. An opto-electrical converter is disposed between a terminal access device and a light waveguide bus.

Abstract: An apparatus for receiving components having overlapping surfaces and welding the components together with the use of ultrasound. An ultrasound emitter receives a high frequency current and converts it into mechanical ultrasonic vibrations having the same frequency. A transmitter transmits the ultrasonic vibrations to a sonotrode which focuses the ultrasonic vibrations on the components to be welded together. The sonotrode is provided with a circumferential collar and means are provided for lowering the collar during the welding process so that a part of the collar tangentially contacts the overlapping surface of one of the components. The part of the collar which tangentially contacts the overlapping surface introduces ultrasonic energy into the components. The ultrasonic emitter, transmitter and sonotrode are rotatably mounted via a vibration node of the transmitter.

Abstract: A process for wet chemical metallization of a substrate includes the steps of cleansing the substrate to be metalized; precipitating an electrically highly conductive gas and vapor permeable metal base layer onto the cleansed substrate from a wet chemical metallization bath; precipitating a metal layer which is comprised of at least one metal and at least one kind of non-metallic particles onto the metal base layer by electrolytic deposition from a bath comprised of at least one electrolyte; and at least one kind of finely dispersed non-metallic particles and subjecting the metallized substrate to at least one heat treatment whereby volatile components embedded in the metal base layer and the metal layer are removed and the volume of the non-metallic particles in the metal layer is reduced. In a preferred embodiment the metal layer is comprised of copper and about 5 percent by weight of ceramic particles having a diameter of less than 10 .mu.m.

Abstract: The invention relates to a housing for opto-electronic components having an integrated Joule-Thomson cooler, the housing including a lower section, a center section and an upper section intended for radiation intake. The invention provides for the housing lower section and the housing center section, which enclose a heat exchanger pipe of the Joule-Thomson cooler, to be made of a material with low heat conductivity, and for the heat exchanger pipe to be arranged in coil form in one plane.

Abstract: A method of producing a flexible carrier substrate for a photovoltaic solar generator wherein a polyimide film disposed on a heatable lamination table is coated with an adhesive and hardened whereupon, after the application of an adhesion promoting layer, a glass filament fabric is placed onto the polyimide film and is subsequently saturated with a silicone adhesive. Resistance of the generator to atomic oxygen is obtained by performing the following method steps: (a) during the production of the substrate, a tear-away fabric is introduced into the not-yet-hardened silicone adhesive; (b) the laminate composed of polyimide film, glass filament fabric and tear-away fabric is hardened under vacuum; and (c) before the solar cells are glued onto the flexible carrier substrate, the tear-away fabric is removed in such a manner that a torn-open, structured silicone surface is produced onto which the solar cells of the generator can be glued.

Abstract: For a mail stacker including a compartmented path equipped with switches and stack compartments for sorting the letters, to avoid congestion of the letters assigned to the same compartment upon entry into the compartment there is provided a secondary conveying path parallel to part of the primary conveying path, with the length or transporting speed of the secondary conveying path being dimensioned so that, after two of the above-mentioned letters have been separated and combined again, they are now transported in an overlapping arrangement.

Abstract: A method for manufacturing semiconductor components contactable on both sides, in particular IMPATT diodes. The active silicon layers of the IMPATT diode are grown onto a silicon substrate. The first silicon layer grown onto the silicon substrate has a high boron/germanium doping level and acts as an etch atop layer when the substrate is removed. The boron/germanium doping of the first silicon layer compensates for the mechanical stress in the silicon layer generated by the boron doping.

Abstract: A thin film solar cell with an n-i-p structure has a roughened substrate surface, and, to achieve an improved fill factor, the substrate surface of the solar cell is a multiply concave surface and has no sharp points.

Abstract: A structured semiconductor body e.g., an integrated circuit or a transistor, based on an silicon substrate having barrier regions which contain polycrystalline silicon, preferably produced by a silicon MBE process. The barrier regions are required to delimit monocrystalline silicon semiconductor regions and/or structures to prevent undesirable current flow.

Abstract: In an aircraft on-board radar system employing a sharply focused directional pattern which is able to sweep over a given space range, the range in the MPRF mode is limited primarily by the ground clutter picked up via the side lobes of the antenna pattern. To increase the range, an antenna is employed which, due to asymmetrical distribution of the antenna aperture (signal field) in the elevational direction with respect to the center of the aperture, has a significantly higher side lobe spacing below the principal lobe than above the principal lobe. Because of the side lobe spacing being greater below the principal lobe, less ground clutter components are picked up while the smaller side lobe spacing above the principal lobe results in hardly any increase of clutter components in the echo signal.

Abstract: A structured semiconductor body based on a Si substrate and having monocrystalline semiconductor regions and barrier regions which contain polycrystalline silicon which have preferably been produced in an Si-MBE process. The barrier regions are provided to delimit the monocrystalline Si semiconductor structures to prevent undesired current flow, for example between two monocrystalline devices of an integrated circuit. The polycrystalline silicon of the barrier regions has a substantially lower electrical conductivity than the monocrystalline regions, and consequently it is possible to spatially selectively dope portions the barrier region so as to provide regions which electrically contact a monocrystalline silicon region. In a preferred embodiment a polycrystalline silicon region within the barrier region is doped so that it forms a pn-junction with the adjacent monocrystalline semiconductor region and can be used, for example, as an emitter zone of a bipolar device.

Abstract: A manually guided electrical tool which is driven by a drive motor. The tool includes a device for metering and mixing at least two substances and for the feeding of the intermixed substances to a treatment place. The device includes: cartridges which contain the substances to be intermixed, receptacle pockets for receiving the cartridges, an extruding means associated with each cartridge for extruding the substances; a mixer for mixing the extruded substance which has an outlet through which the intermixed substances are fed, a feed duct connected to a each cartridge for transporting the extruded substances to the mixer, a gear unit driven by the drive motor, a drive element driven by the gear unit for activating the extruding means and the mixer; and a gear housing for housing the gear unit which is attached to the drive motor.