Abstract: A monostatic multibeam radar sensor device for a motor vehicle, including a directional characteristic of an antenna unit having at least one transceiving channel and at least one receiving channel, and including a mixer system, which has an at least approximately isolating mixer for at least one of the receiving channels. The at least approximately isolating mixer includes a Gilbert cell mixer, which, due to a non-ideal isolation between an input of the local oscillator signal and the corresponding receiving channel, emits a transmission power via this receiving channel, using an overcoupling signal, the transmission power influencing the directional characteristic of the antenna unit and the directional characteristic being switchable by controlling the phase position of the overcoupling signal.

Abstract: A radar sensor for motor vehicles includes a plurality of transmission and receiving antennas, which differ in their azimuthal directivity characteristic and to which a separate mixer is assigned, which mixes a transmitted signal with a received signal, at least one of the mixers being a transfer mixer, and at least one other of the mixers having a lower transfer output, wherein the assignment of the transmission and receiving antennas is asymmetrical with respect to the mixers differing in their transfer output.

Abstract: A monostatic multi-beam radar sensor includes a group antenna and a mixer system made up of a plurality of transfer mixers connected to antenna elements of the group antenna. A first number of the transfer mixers is switched to isolation mode and a second number of the transfer mixers is switched to transfer mode in order to realize different directional characteristics for the transmit and receive operation.

Abstract: In a bistatic array antenna, beam focusing in preferred directions of the array antenna occurs with the aid of a focusing arrangement in such a way that beam focusing occurs both in a first preferred direction for the array elements of the transmit mode as well as in another second preferred direction for the array elements of the receive mode.

Abstract: A radar system includes at least two modules, each having a phase detector and a first high-frequency source and each having an antenna output and/or each having one or more antennas. At least two modules include a device for synchronization between the first high-frequency source of a first module of the at least two modules and the first high-frequency source of a second module of the at least two modules of the radar system. The phase detector has a first input for a first reference signal. The phase detector also has a second input for a first loop signal. A module for a radar system has the design of one of the modules of the radar system described above.

Abstract: A radar sensor having a transmission module and a signal stabilizer, which are situated on a shared circuit board, a casing, which accommodates the signal stabilizer and forms a shield against high frequency radiation of the signal stabilizer together with a conductive layer of the circuit board, and having a connection line, which crosses through the shield, to connect the signal stabilizer to the transmission module, in which the connection line is embedded in the circuit board in insulated fashion.

Abstract: An FMCW radar sensor having a plurality of antenna elements and a supply circuit for supplying transmission signals having ramp-shaped modulated frequencies to the antenna elements, including a switchover device for switching over the supply circuit between a near-field mode, in which the transmission signals supplied to the individual antenna elements have a certain frequency offset, and a far-field mode, in which the frequencies of the transmission signals are identical.

Abstract: A balanced series mixer including a balun transformer (10) having a HF-source port and an antenna port on one side and two diode ports on the other side, two diodes (20, 22), each of which is connected between one of the diode ports and a HF-ground (24, 26), and a useful-signal tap (48) for a mixed product generated by the diodes and made up of a HF-signal supplied via the antenna port and a portion of a HF-signal supplied via the HF-source port, characterized in that the diodes (20, 22) are in each instance biased via a bias feed line (50, 52) connected on the side of the HF-ground (24, 26), that the diodes are separated, in terms of direct current, from the useful-signal tap (48) and from the lines (34, 42) connected to the HF-source port and the antenna port, and that the two bias feed lines (50, 52) have low-pass filters (54) configured symmetrically relative to each other.

Abstract: It is therefore the object of the present invention to disclose a device for power calibration of an oscillator in the high-frequency range, which has a reduced number of components and/or has less-expensive components. A method for power calibration of an oscillator is also to be disclosed, which eliminates the disadvantages of the known methods, that is, determining the output power of the oscillator via an additional, expensive component. To that end, the input (31) of the control module (40) is embodied as electrically connectable to the HF switch (comprising (22) and (24)) and the output (34) of the control module (40) is embodied as electrically connectable to the HF switch and/or to the amplifier.

Abstract: A radar transceiver, including at least one oscillator tunable using a control voltage, at least one mixer, and at least one antenna for transmitting and receiving ultra-high-frequency signals, the mixer mixing the receive signal with the signal of the oscillator and outputting a demodulated signal, and in which the at least one oscillator, the at least one mixer, and the at least one antenna are situated on a single chip located next to one another in one plane.

Abstract: In a radar sensor, a continuous microwave signal is passed through an RF switch which is periodically controlled by a pulse signal. The pulse signal is frequency modulated in such a way that the spectrum of the pulse signal is expanded without decorrelation occurring. Using this arrangement, the noise level is kept low and the detection range is increased.

Abstract: It is therefore the object of the present invention to disclose a device for power calibration of an oscillator in the high-frequency range, which has a reduced number of components and/or has less-expensive components. A method for power calibration of an oscillator is also to be disclosed, which eliminates the disadvantages of the known methods, that is, determining the output power of the oscillator via an additional, expensive component. To that end, the input (31) of the control module (40) is embodied as electrically connectable to the HF switch (comprising (22) and (24)) and the output (34) of the control module (40) is embodied as electrically connectable to the HF switch and/or to the amplifier.

Abstract: An apparatus 1 for detecting and evaluating objects in the vicinity of a vehicle, having transmitting and receiving means for electromagnetic radiation in the Gigahertz range, includes at least one antenna protected by a radome 11a, 11b. The radome 11a, 11b is designed as lens-shaped in such a way that beam focusing and/or beam pivoting of the broadcast electromagnetic radiation is made possible.

Abstract: The present invention provides a method for generating HF signals for determining a distance and/or a speed of an object, having the following steps: generating a pulsed demodulated signal (6?) from a first signal (3) and a second signal (4) in a signal generator (31; 1, 2, M1, 7, 8); with a transmitting device (20), sending the pulsed modulated signal (6?) in the direction of an object (40); with a receiving device (21), receiving a pulsed signal (6?) reflected by the object (40); generating a pulsed demodulated signal (4?) from the received signal (6?) and the first signal (3) in a first signal processor (32; M2, 15); and generating a coherent signal (23) from the pulsed demodulated signal (4?) and the second signal (4) and a noncoherent signal (22) from the pulsed demodulated signal (4?) in a second signal processor (33; M3, 16, 17, 18). The present invention also provides an apparatus for generating HF signals for determining a distance and/or a speed of an object.

Abstract: In a radar sensor, a continuous microwave signal is passed through an RF switch which is periodically controlled by a pulse signal. The pulse signal is frequency modulated in such a way that the spectrum of the pulse signal is expanded without decorrelation occurring. Using this arrangement, the noise level is kept low and the detection range is increased.

Abstract: In a microwave antenna a dielectric carrier having a strip line is provided. A funnel-shaped or horn shaped waveguide radiator is integrated into a metallic cover, and it is situated above the strip line. A transformation element is provided for the transition from the strip line to the aperture of the waveguide radiator.

Abstract: A short-range radar system includes short-range radar sensor means and means (41) for HF-impulse generator for the sensor means. The means for HF-impulse generation are embodied for emitting impulses with adjustable pulse duration (51, 53).

Abstract: To implement a phase shifter, at least two electronically tunable phase shifter elements are connected in series, pairs of phase shifter elements having opposite phase frequency responses.

Abstract: An apparatus 1 for detecting and evaluating objects in the vicinity of a vehicle, having transmitting and receiving means for electromagnetic radiation in the Gigahertz range, includes at least one antenna protected by a radome 11a, 11b. The radome 11a, 11b is designed as lens-shaped in such a way that beam focusing and/or beam pivoting of the broadcast electromagnetic radiation is made possible.

Abstract: In a microwave antenna a dielectric carrier having a strip line is provided. A funnel-shaped or horn shaped waveguide radiator is integrated into a metallic cover, and it is situated above the strip line. A transformation element is provided for the transition from the strip line to the aperture of the waveguide radiator.