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Radar device and method for coding a radar device

The present invention relates to a radar system having means (12) for producing a code, means (18) for modulating a transmission signal in a transmit branch, using the code, means (32) for delaying the code, means (20) for modulating a signal in a receive branch, using the delayed code, and means (26) for mixing a reference signal with a receiving signal, the modulation of one of the signals being performed by an amplitude modulation (ASK; "amplitude shift keying") and the modulation of the other signal by a phase modulation (PSK; "phase shift keying"). Furthermore, a radar system is proposed in which blanking of phase transitions is provided. The present invention also relates to methods which may advantageously be carried out, using the radar systems according to the present invention.
Owner:ROBERT BOSCH GMBH

Circuit arrangement and method for Insulation monitoring for inverter applications

An inverter application comprises at least one apparatus fed by an inverter (10). The determining of insulation defects is effected by way of a differential voltage of part voltages (U, U′) of an intermediate circuit (7) or the ratio of one of these part voltages (U, U′) to the total voltage of an intermediate circuit, and by way of an operating condition of the inverter (10). The monitoring of the insulation is carried out only with the means (1a, 1b, 1c, 1a′, 1b′, 1c′, 5, 5′) which are present in the inverter (10) in any case. The operating condition is set as a particular switch position in the inverter (10) by an insulation monitoring system. Alternatively, the operating condition is, while the inverter is on-line or in operation, transferred from the inverter control (9) to an insulation monitoring system for improving the quality of the monitoring.
Owner:SCHMIDHAUSER AG
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