Abstract:
A motor vehicle radar system in which the position of the transmission/reception elements of the radar system can be changed relative to a focusing element, such as an antenna lens, in order to adjust the principal beam direction.
Abstract:
A latent curing agent for aminoplast resins produced by reacting diethanolamine with glycidol in a molar ratio of 1:(1 to 1.2) at 0.degree. to 90.degree. C. and then reacting the product with 0.5 to 1 mole of sulfur dioxide per mole of diethanolamine at 0.degree. to 90.degree. C.
Abstract:
The invention relates to a mechanical support device (10) for at least one sensor plate, for example an antenna element (18) in a device for transmitting and/or receiving electromagnetic high-frequency signals. According to the invention, the support device (10) is configured as a coil form (24, 26) of at least one winding (32, 32′, 32″; 34, 34′, 34″; 36, 36′, 36″) in an inductive sensor. In addition, the invention relates to a measuring device comprising multiple sensors, in particular a locating device (80) for detecting objects that are enclosed in a medium, said measuring device having at least one support device (10) of this type.
Abstract:
An antenna array for radar transceivers, in particular for ascertaining distance and/or speed in the surroundings of vehicles, a first antenna part being situated on a carrier and a second antenna part being situated on another carrier situated at a distance from the first. The first antenna part has two generally rectangular primary exciter patches which adjoin each other on one edge, where they are short-circuited toward ground, two primary exciter patches have two separate supply lines, and the second antenna part comprises two mutually separated rectangular secondary exciter patches, which partially cover the primary exciter patches and which have, in the region of the ground short-circuit of the primary exciter patches, in the beam direction, a distance from each other that at least exposes the ground short-circuit.
Abstract:
An integrated circuit for measuring the distance and/or velocity of objects, having: a high-frequency signal generating device for generating a first HF signal having a predefined frequency and a predefined modulation curve from at least one LF signal; a diplex/mixing device, which is coupled to the high-frequency signal generating device for determining a frequency offset between the first HF signal and a reflected second HF signal; a transceiver device, which is coupled to the diplex/mixing device, for sending the first HF signal and simultaneously receiving the reflected second HF signal, which is a function of a predefined modulation curve of the first HF signal and a distance to a reflecting object; and an adapter device, which is coupled between the diplex/mixing device and the transceiver device, for adapting the impedance of the transceiver device as a function of the frequency of the first HF signal.
Abstract:
The provided stripline directional coupler, having two coupling conductors galvanically isolated with respect to a grounding layer at zero potential, includes, in particular, a multilayer conductor pattern having at least three metallic layers separated by at least two dielectric insulating layers; a first metallic layer forming the coupling conductor, and a second of the at least three metallic layers having a conductor pattern, which is galvanically isolated from the at least two other metallic layers, and with the aid of which capacitors that are connected in series and are very small are formed between the at least three metallic layers.
Abstract:
In an antenna system, an antenna feeding substrate is connected by its conductor structures via field coupling to planar antenna radiating elements. A mounting part, able to be fixed in position against the antenna feeding substrate, is provided for the antenna radiating elements. The mounting part itself or a housing part able to be joined to it with form locking is used for the HF shielding of the antenna feeding substrate. The mounting part and/or housing part are structured in such a way that, viewed from the planar antenna radiating elements in the radiation direction, a wave guidance is achieved.
Abstract:
The invention relates to a micromechanical resonator having a bondable resonance body and a method for fabricating a micromechanical resonator for semiconductor components.The invention provides that the resonator (26) is composed successively of a first layer (16) of silicon for coupling the resonator (26) in terms of a circuit, an insulating layer (14) of silicon dioxide, a cylindrical base layer (cylinder 18), and a metal layer (20) completely surrounding the cylinder (18).The method provides that a cylindrical structure (18) (cylinder) is etched (trench etching process) in a base layer (12) of p−-doped silicon (SOI wafer) separated from a layer (16) of silicon by an insulating layer (14), and the cylindrical structure (18) is coated with a metal layer (20).
Abstract:
A device is described for igniting an air-fuel mixture in an internal combustion engine using a high-frequency electric power source having a coaxial waveguide structure (5) into which the high-frequency electric power may be coupled and whose one end protrudes into the individual combustion chamber of a cylinder of the internal combustion engine. The one end of the coaxial waveguide structure (5) is designed as an igniter (7a) in such a way that, when a voltage potential is applied, a field structure (22), protruding into the combustion chamber, and thus a free-standing plasma in the air-fuel mixture at the inner conductor (7, 7a), projecting from the waveguide structure, is generatable via an abrupt and/or smooth cross-section change (21) of the inner conductor (7) and/or the outer conductor (6).
Abstract:
The invention relates to a locator, in particular a handheld locator for detecting inclusions in walls, ceilings and/or floors, having a capacitive sensor device disposed in a housing, having means for generating a detection sensor of the at least one capacitive sensor device, having a control and evaluation unit, communicating with the sensor device, for ascertaining measurement values from the detection sensor, and having an output unit for reproducing measurement values of the capacitive sensor device.According to the invention, it is proposed that a measuring capacitor (16) of the capacitive sensor device (10) has a first electrode (21), which includes one face of the housing (14) of the sensor device (10).