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公开(公告)号：US20180332488A1
公开(公告)日：2018-11-15
申请号：US16034776
申请日：2018-07-13
Applicant: Infineon Technologies AG
Inventor： Florian STARZER , Peter BOGNER , Oliver FRANK , Guenter HAIDER , Michael KROPFITSCH , Thomas SAILER , Jochen O. SCHRATTENECKER , Rainer STUHLBERGER
CPC classification number: H04W24/06 , H03F3/195 , H03F2200/165 , H03F2200/333 , H03F2200/451 , H03M1/1245 , H04B1/16
Abstract: A radar sensor includes a mixer configured to receive an radio frequency (RF) input signal to down-convert the RF input signal into a base-band or intermediate frequency (IF) band, an analog-to-digital converter (ADC), and a signal processing chain coupled between the mixer and the ADC. The radar sensor further includes an oscillator circuit that is configured to generate a test signal. The ADC is coupled to an output of the signal processing chain, and is configured to generate a digital signal by digitizing an output signal of the signal processing chain, the output signal being derived from the test signal. The radar sensor further includes a digital signal processing circuit coupled to the ADC downstream thereof, the digital signal processing circuit being configured to perform a spectral analysis on frequency values of the digital signal.
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公开(公告)号：US20170353876A1
公开(公告)日：2017-12-07
申请号：US15610840
申请日：2017-06-01
Applicant: Infineon Technologies AG
Inventor： Florian STARZER , Peter BOGNER , Oliver FRANK , Guenter HAIDER , Michael KROPFITSCH , Thomas SAILER , Jochen O. SCHRATTENECKER , Rainer STUHLBERGER
CPC classification number: H04W24/06 , H03F3/195 , H03F2200/165 , H03F2200/333 , H03F2200/451 , H03M1/1245 , H04B1/16
Abstract: A radio frequency (RF) receive circuit is described herein. In accordance with one embodiment, the RF receive circuit includes a mixer configured to receive an RF input signal to down-convert the RF input signal into a base-band or intermediate frequency (IF) band, an analog-to-digital converter (ADC), and a signal processing chain coupled between the mixer and the ADC. The signal processing chain includes at least two circuit nodes. The RF receive circuit further includes an oscillator circuit that is configured to generate a test signal. The oscillator circuit is coupled to the signal processing chain and is configured to selectively feed the oscillator signal into one of the at least two circuit nodes.
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公开(公告)号：US20190140625A1
公开(公告)日：2019-05-09
申请号：US15808157
申请日：2017-11-09
Applicant: Infineon Technologies AG
Inventor： Dietmar STRAEUSSNIGG , Peter BOGNER , Michael KROPFITSCH , Jens BARRENSCHEEN
CPC classification number: H03H17/0664 , H02P27/08 , H03H17/0276 , H03H17/0286 , H03H17/0671 , H03H17/0685 , H03M1/12
Abstract: Filters are discussed where a first window function and a second window function are applied to a digital input signal, wherein a window length of the first window function is longer than a window length of the second window function. The results of this windowing are integrated.
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公开(公告)号：US20180172801A1
公开(公告)日：2018-06-21
申请号：US15834118
申请日：2017-12-07
Applicant: Infineon Technologies AG
Inventor： Jochen O. SCHRATTENECKER , Florian STARZER , Oliver FRANK , Michael KROPFITSCH , Georg KREBELDER , Helmut KOLLMANN , Thomas SAILER
IPC: G01S7/40
CPC classification number: G01S7/4021 , G01S7/032 , G01S7/352 , G01S2007/4069 , G01S2013/9321
Abstract: A radar device comprises a test signal generator including a digital harmonic oscillator that generates a digital oscillator signal with a first spectral component; a first digital-to-analog-converter that generates an analog oscillator signal based on the digital oscillator signal. Furthermore, the radar device comprises at least one radar channel receiving the analog oscillator signal during one or more self-tests.
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