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公开(公告)号：US20200301001A1
公开(公告)日：2020-09-24
申请号：US16870227
申请日：2020-05-08
Applicant: Infineon Technologies AG
Inventor： Florian Starzer , Helmut KOLLMANN , Alexander MELZER , Rainer STUHLBERGER , Roland VUKETICH , Mathias ZINNOECKER
Abstract: A radar method is described. According to one exemplary embodiment, the method includes generating a first RF oscillator signal in a first chip and supplying the first RF oscillator signal to a transmission (TX) channel of the first chip and transmitting the first RF oscillator signal from the TX channel of the first chip to the second chip via a transmission line.
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公开(公告)号：US20190271764A1
公开(公告)日：2019-09-05
申请号：US16285863
申请日：2019-02-26
Applicant: Infineon Technologies AG
Inventor： Alexander ONIC , Bernhard GSTOETTENBAUER , Thomas LANGSCHWERT , Jochen O. Schrattenecker , Rainer STUHLBERGER
Abstract: A method for testing at least one reception path in a radar receiver is provided. The reception path contains a mixer and a downstream signal processing circuit. The method involves injecting a test signal into the reception path, so that at least a first test tone having a frequency in a passband of the signal processing circuit and a second test tone having a frequency outside the passband are present on the reception path downstream of the mixer. Further, the method involves tapping off a baseband signal, generated by the signal processing circuit, from the reception path, the baseband signal being based on the test signal.
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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：US20190068295A1
公开(公告)日：2019-02-28
申请号：US16174867
申请日：2018-10-30
Applicant: Infineon Technologies AG
Inventor： Karl DOMINIZI , Oliver FRANK , Herbert JAEGER , Herbert KNAPP , Hao LI , Florian STARZER , Rainer STUHLBERGER , Jonas WURSTHORN
Abstract: One exemplary embodiment of the present invention relates to a circuit that includes at least one RF signal path for an RF signal and at least one power sensor, which is coupled to the RF signal path and configured to generate a sensor signal representing the power of the RF signal during normal operation of the circuit. The circuit further includes a circuit node for receiving an RF test signal during calibration operation of the circuit. The circuit node is coupled to the at least one power sensor, so that the at least one power sensor receives the RF test signal additionally or alternatively to the RF signal and generates the sensor signal as representing the power of the RF test signal.
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公开(公告)号：US20180113193A1
公开(公告)日：2018-04-26
申请号：US15726433
申请日：2017-10-06
Applicant: Infineon Technologies AG
Inventor： Mario HUEMER , Alexander MELZER , Alexander ONIC , Rainer STUHLBERGER
CPC classification number: G01S7/2813 , G01S7/038 , G01S7/35 , G01S7/4056 , G01S13/34 , G01S13/343 , G01S13/931 , G01S2007/028 , G01S2007/406 , G01S2007/4065 , H03B1/04 , H03B2202/073
Abstract: A method for cancelling phase noise in a radar signal is described herein. In accordance with one embodiment, the method includes transmitting an RF oscillator signal, which represents a local oscillator signal including phase noise, to a radar channel and receiving a respective first RF radar signal from the radar channel. The first RF radar signal included at least one radar echo of the transmitted RF oscillator signal. Further, the method includes applying the RF oscillator signal to an artificial radar target composed of circuitry, which applies a delay and a gain to the RF oscillator signal, to generate a second RF radar signal. The second RF radar signal is modulated by a modulation signal thus generating a frequency-shifted RF radar signal. Further, the method includes subtracting the frequency-shifted RF radar signal from the first RF radar signal.
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Patent Agency Ranking
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：US20220113375A1
公开(公告)日：2022-04-14
申请号：US17560366
申请日：2021-12-23
Applicant: Infineon Technologies AG
Inventor： Alexander ONIC , Bernhard GSTOETTENBAUER , Thomas LANGSCHWERT , Jochen O. Schrattenecker , Rainer STUHLBERGER
Abstract: A method for testing at least one reception path in a radar receiver is provided. The reception path contains a mixer and a downstream signal processing circuit. The method includes injecting a test signal into the radar reception path so that at least a first test tone having a first test tone frequency in a passband of the downstream signal processing circuit and a second test tone having a second test tone frequency outside the passband are present on the radar reception path downstream of the mixer; and determining a characteristic of the radar reception path based on a first characteristic of a baseband signal at the first test tone frequency and a second characteristic of the baseband signal at the second test tone frequency.
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公开(公告)号：US20210382159A1
公开(公告)日：2021-12-09
申请号：US17403096
申请日：2021-08-16
Applicant: Infineon Technologies AG
Inventor： Florian STARZER , Helmut KOLLMANN , Alexander MELZER , Rainer STUHLBERGER , Roland VUKETICH , Mathias ZINNOECKER
Abstract: A radar method is described. According to one exemplary embodiment, the method includes generating a first RF oscillator signal in a first chip and supplying the first RF oscillator signal to a transmission (TX) channel of the first chip and transmitting the first RF oscillator signal from the TX channel of the first chip to the second chip via a transmission line.
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公开(公告)号：US20190235051A1
公开(公告)日：2019-08-01
申请号：US16259160
申请日：2019-01-28
Applicant: Infineon Technologies AG
Inventor： Alexander MELZER , Michael GERSTMAIR , Mario HUEMER , Alexander ONIC , Christian SCHMID , Rainer STUHLBERGER
CPC classification number: G01S7/40 , G01S7/03 , G01S7/032 , G01S7/354 , G01S7/4017 , G01S13/343 , G01S13/87 , G01S13/931
Abstract: A method is described that, according to one exemplary embodiment, involves the following: generating a first radio frequency (RF) signal by a first RF oscillator and a second RF signal by a second RF oscillator, mixing the first RF signal and the second RF signal by a mixer to generate a mixer output signal, digitizing the mixer output signal to generate a digitized signal, and calculating an estimate for a power spectral density of the mixer output signal from the digitized signal. Based on the estimate for the power spectral density of the mixer output signal, an estimate for a noise power spectral density characterizing the noise contained in the first and the second RF signals is calculated.
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公开(公告)号：US20180175868A1
公开(公告)日：2018-06-21
申请号：US15843589
申请日：2017-12-15
Applicant: Infineon Technologies AG
Inventor： Rainer STUHLBERGER , Lukas HESCHL
CPC classification number: H03L7/146 , G01S7/35 , G01S13/343 , G01S2013/9321 , H03G3/3047 , H03L7/0814 , H03L7/0816 , H03L7/101
Abstract: A circuit includes an RF oscillator coupled in a phase-locked loop. The phase-locked loop is configured to receive a digital input signal, which is a sequence of digital words, and to generate a feedback signal for the RF oscillator based on the digital input signal. The circuit further includes a digital-to-analog conversion unit that includes a pre-processing stage configured to pre-process the sequence of digital words and a digital-to-analog-converter configured to convert the pre-processed sequence of digital words into the analog output signal. The circuit includes circuitry configured to combine the analog output signal and the feedback signal to generate a control signal for the RF oscillator. The pre-processing stage includes a word-length adaption unit configured to reduce the word-lengths of the digital words and a sigma-delta modulator coupled to the word-length adaption unit downstream thereof and configured to modulate the sequence of digital words having reduced word-lengths.
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