摘要:
To make inductance elements, thick film electrically conductive paste, which may include precious metal such as silver, are applied by a deformable stamp on a ferrite core which, for example, can be someone hump shaped, for adhesion to a carrier (30) and formed with openings thereto, the stamp being shaped to fit within the opening and deforming to penetrate the opening to apply the thick film conductive paste in form of conductive tracks thereon. Conductive tracks can be applied, previously, to a substrate carrier (30), which are then joined by the paste strips to form interconnected windings (FIGS. 1a, 1b); or the ferrite may be in form of a toroidal core (34), on which the conductive tracks are applied around all surfaces, to form connected windings thereon, the deformable stamp having a projecting tip which can fit within the opening of the toroidal core.
摘要:
The device has a printed-circuit board (5), on one side of which at least one antenna (1) is located and, on the other side of which electrical circuits (3) are located. An electromagnetic shield between the antenna (1) and the electrical circuits (3) is realized in a manner that is simple with regard for production engineering by locating a feeder network (13, 15)—developed using a coplanar circuit technique and with which the at least one antenna (1) is contacted—on the antenna-side surface of the printed-circuit board (5), and by covering the antenna-side surface of the printed-circuit board (5) with the connected-to-ground outer conductor (45) of the coplanar circuit to such an extent that the required shield between the antenna (1) and the electrical circuits (3) is produced as a result.
摘要:
In a lens arrangement for collimating radar waves for distance sensors, in particular for motor vehicles, several sublenses are arranged integrally next to one another. A lobe enlargement necessary for angular analysis is thereby achieved. The range is only slightly reduced as compared to a lens having a surface area of the same size.
摘要:
To improve the space factor of a barium titanate resonator, the resonator is a tubular carrier (11) having metal layers on the inner and outer surfaces. At least one of the metal layers is axially interrupted by a slit. Terminal connections for the resonator are located adjacent the slit on the interrupted layer, and on the continuous layer. For shielding, preferably, the continuous layers at the outside and end tabs (FIG. 4) may additionally be provided. More than one axially staggered inner/outer electrode layer system may be provided on one tubular carrier.
摘要:
It is provided that the semiconductor component is a component of a semiconductor circuit (10) comprising a first silicon layer (12), an adjoining silicon dioxide layer (insulating layer (14)) and a subsequent further silicon layer (structured layer (16)) (SOI wafer), and the semiconductor component comprises an IMPATT oscillator (30), having a resonator (24) which includes a metallized cylinder (18) of silicon, disposed in the structured layer (16); a coupling disk (28) covering the cylinder (18) in the region of the first layer (12); and an IMPATT diode (32), communicating with the cylinder (18) of the resonator (24) via a recess (38) in the coupling disk (28); and a reference oscillator (46) of lower frequency, having a resonator (24) which includes a metal cylinder (18) of silicon, disposed in the structured layer (16), and coupling disk (28) covering the cylinder in the region of the first layer (12); and a microwave conductor, communicating with the cylinder (18) of the resonator (24) via a recess (38) in the coupling disk (28), and the reference oscillator, via an active oscillator circuit (58), serves the purpose of frequency stabilization of the IMPATT oscillator (30); with integrated Schottky diodes; and a transmitting and receiving antenna (49).
摘要:
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).
摘要:
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).
摘要:
A high-frequency transformer is proposed in which at least one elastic carrier (18, 20) is constructed with openings (22 to 29, 52, 69, 73, 74) and also with cutouts (30 to 33, 53, 70, 71, 75, 76, 77) in such a way that the regions on the carrier (18, 20) delimited by the cutouts form a tongue (72, 78), which may be lifted to insert a magnetic core (13 to 16). Around the cores (13 to 16) in the openings (22 to 29, 52, 69, 73, 74) conductor tracks (51, 57, 58, 80, 81, 92) are mounted on one or both sides of the carrier (18, 20), and are completed as a turn or as a continuous winding by conductor track parts (64, 66, 67) mounted on bridges (17, 19, 21). At definite locations, the conductor tracks (51, 57, 58, 80, 81) have bonding pads (85, 89, 91) for surface mounted devices (38 to 41, 86, 87). In common with the insulation spacings between the conductor tracks, the conductor track widths are adjusted to the dimensions of the surface mounted devices (86, 87). Because of the construction of alternating layers of carriers (18, 20) and bridges (17, 19, 21) it is possible to realize a pre-set number of coil turns. Consequently, with the high-frequency transformer it is possible to realize all electronic circuits, especially such as have high-quality repeating coils, up to a high operating frequency and with a high packaging density of the components.
摘要:
A directional H.F. broadband transformer made by a printed circuit technique includes an insulating support carrying a two-hole ferrite core. A planar coil arrangement includes two web spirals wound around outer legs of the core and each being coupled to an elongated web arranged in the same plane and passing through a corresponding hole of the core. The two elongated webs are formed with an input terminal, an output terminal and a tap terminal of equal impedance. An isolated conductive layer mounted above the webs on the insulating support is capacitively coupled with the coil arrangement and with a ground layer to reduce values of series connected distributed capacitors resulting between respective webs and the ground layer.
摘要:
An inductive pressure sensor is proposed which has at least one coil embodying a frequency-determining part of an oscillator and disposed at a distance from a diaphragm which is deflectable in accordance with pressure. When pressure is exerted on the diaphragm, the inductance of the coil and thus the oscillator frequency are shifted. The coil is a flat, spiral element and the diaphragm has a surface of highly conductive or ferrite material. It is further provided that two oscillators of identical design and having corresponding coils are used, operating under identical thermal conditions. Either one oscillator operates at a fixed frequency, so that both absolute-pressure measurements and differential-pressure measurements relative to ambient pressure can be made, or else the two oscillators can be detunable in accordance with pressure, so that differential-pressure measurements between two media can be made. The output signal is then obtained by mixing. The oscillators are preferably embodied as thin-film elements.