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US 2006/0125683 A1Published application
Radar sensor and method for operating a radar sensor
AssigneeRobert Bosch GmbH
InventorDirk Steinbuch
Life of this patent
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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.
Claims14
1-13. (canceled)
A method for operating a radar sensor, comprising:
- generating radar pulses by passing a continuous microwave signal through an RF switch that is periodically controlled by a pulse signal;
- and
- modulating the pulse signal for controlling the RF switch in such a manner whereby the spectral lines of the pulse signal are expanded without causing decorrelation.
A radar sensor, comprising:
- an oscillator for generating a continuous microwave signal;
- at least one RF switch in a transmission branch and at least one RF switch in a receiving branch;
- and
- a control unit for controlling the RF switches;
- wherein the at least one RF switch in the transmission branch receives a frequency-modulated pulse signal from the control unit, whereby radar pulses are generated by passing the continuous microwave signal through the at least one RF switch in the transmission branch that is periodically controlled by the frequency-modulated pulse signal from the control unit, and wherein the frequency-modulated pulse signal from the control unit for controlling the at least one RF switch in the transmission branch is modulated in such a manner whereby the spectral lines of the pulse signal are expanded without causing decorrelation.
2 more elements
Dependencies are inferred from the claim text.