摘要:
The invention relates to a modular unit for a radar antenna array with integrated HF chip (100). Said modular unit comprises at least one microwave structure antenna element, and a focusing element (200) disposed in the beam path of the radar antenna array upstream of the at least one antenna element by means of which an amplified illumination of the HF chip (100) is achieved. The invention is characterized by an add-on device (115, 120) which allows addition of focusing elements (200) of various antenna characteristics to the modular unit. The add-on device is preferably configured by fastening means such as clamp-on elements (120), plug-in elements or the like. Positioning elements (115) can be additionally provided and are used to add the focusing element (200) to the modular unit with the required precision.
摘要:
The invention relates to an integrated semiconductor component for conducting high-frequency measurements and to the use thereof. According to the invention, the semiconductor component is part of a semiconductor circuit (10) (SOI wafer), comprised of a first silicon layer (12), of a silicon oxide layer (insulating layer (14)) connected thereto, and of a subsequent additional silicon layer (structural layer (16)). The semiconductor component is comprised of an IMPATT oscillator (30) provided with a resonator (24), which contains a metallized silicon cylinder (18) mounted in the structural layer (16), a coupling disk (28) that covers the cylinder (18) in the area of the first layer (12), and an IMPATT diode (32) that is connected to the cylinder (18) of the resonator (24) via a recess (38) of the coupling disk (28). The semiconductor component is also comprised of a reference oscillator (46) of a lower frequency provided with a resonator (24), which contains a metallized silicon cylinder (18) mounted in the structural layer (16), a coupling disk (28) that covers the cylinder in the area of the first layer (12), and a microwave conductor that is connected to the cylinder (18) of the resonator (24) via a recess (38) of the coupling disk (28). The reference oscillator serves to stabilize the frequency of the IMPATT oscillator (30) via an active oscillator circuit (58). The semiconductor component additionally comprises a receive mixer provided with integrated Schottky diodes and comprises a transmitting/receiving antenna.
摘要:
The invention relates to a method for the filtering of noise from measured signals (sM), which are corrupted by pulsed noise signals (sST) with a known or determinable noise pulse separation (TSt), whereby the recording duration (?tE) for an individual measured value (E) is smaller than a noise pulse duration (Attest) and several individual measured values (E) are recorded with freely selected time separations (TE) in the measured signal (sM). A reliable avoidance of noise generated by noise sources transmitting in a pulsed manner is achieved, whereby at least three sequential individual measured values (E) are recorded with time separations (TE), different for the noise pulse separation (TSt) and a noise-filtered, measured parameter (M) is determined with the at least three individual measured values (E).
摘要:
The device comprises a circuit board (5), on one side of which at least one antenna (1) is arranged and on the other side of which electrical circuits (3) are arranged. An electromagnetic screening between the antennae (1) and the electrical circuits (3) is produced in a technically simple manner, whereby a supply network (13, 15), embodied with coplanar-conductor technology is arranged on the antenna-side surface of the circuit board (15), to which the at least one antenna (1) is connected and the outer conductor (45) of the coplanar-conductor arrangement, lying on the body, covers the antenna-side surface of the circuit board (5) to such an extent that the required screening between the antenna (1) and the electrical circuit (3) is thus produced.
摘要:
The invention relates to a method for the filtering of noise from measured signals (sM), which are corrupted by pulsed noise signals (sST) with a known or determinable noise pulse separation (TSt), whereby the recording duration (
摘要:
The present invention relates to an apparatus, comprising a semiconductor device (2) and an attachment element (3) for establishing an electrically conductive contact for the semiconductor component (2), wherein a shunt for current measurement (33) is integrated in the attachment element (3).
摘要:
The invention relates to a portable power tool with a control device comprising a control unit (12) and a sensor unit (14) for generating a distance signal. The invention provides that the control unit (12) designed for controlling at least one operating parameter of a tool carrying unit according to the distance signal.
摘要:
The invention relates to an electric motor, in particular an electronically commutated electric motor. The electric motor has a stator, a rotor and a housing, which accommodates at least the stator and the rotor in a cavity. The electric motor also has a power output stage, which is connected to the stator and is designed to energize the stator in order to induce a rotating magnetic field. The power output stage has at least one power semiconductor with a thermal contact area, wherein the thermal contact area is thermally conductively connected to the housing, with the result that heat generated in the power semiconductor can be dissipated to the housing. According to the invention, the housing has a housing cup, which at least partially surrounds the cavity and is preferably thermally conductive and which has a cup wall, wherein the cup wall has a mating contact area corresponding to the thermal contact area.