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公开(公告)号：US20220107385A1
公开(公告)日：2022-04-07
申请号：US17061840
申请日：2020-10-02
Applicant: Infineon Technologies AG
Inventor： Alexander MELZER , Francesco LOMBARDO
Abstract: A radio frequency (RF) circuit includes an input terminal configured to receive a reception signal from an antenna; an output terminal configured to output a digital output signal; a receive path including a mixer and an analog-to-digital converter (ADC), wherein the receive path is coupled to and between the input and output terminals, wherein the receive path includes an analog portion and a digital portion, and wherein the ADC generates a digital signal based on an analog signal received from the analog portion; a test signal generator configured to generate an analog test signal injected into the analog portion of the receive path; and a digital processor configured to receive a digital test signal from the digital portion, the digital test signal being derived from the analog test signal, analyze a frequency spectrum of the digital test signal, and determine a quality of the digital test signal.
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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：US20200096603A1
公开(公告)日：2020-03-26
申请号：US16577282
申请日：2019-09-20
Applicant: Infineon Technologies AG
Inventor： Philipp SCHMIDT , Alexander MELZER , Andreas OCH
Abstract: A radar system includes a first integrated radar circuit having a plurality of first transmission paths and a local oscillator configured to generate a local oscillator signal. The first integrated radar circuit has a first terminal configured to output an oscillation signal based on the local oscillator signal. The radar system includes a second integrated radar circuit having a second transmission path and a second terminal. The radar system includes a partially reflective element coupled to the first terminal via a first line section and to the second terminal via a second line section. The partially reflective element is configured to reflect back a first portion of the oscillation signal as a reflected signal via the first line section to the first terminal and to pass on a second portion of the oscillation signal as a forward signal via the second line section to the second terminal.
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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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15.发明申请公开(公告)号：US20220034998A1
公开(公告)日：2022-02-03
申请号：US16943365
申请日：2020-07-30
Applicant: Infineon Technologies AG
Inventor： Francesco LOMBARDO , George EFTHIVOULIDIS , Rainer FINDENIG , Alexander MELZER
Abstract: A radar system is provided that includes a radar monolithic microwave integrated circuit (MIMIC). The radar MMIC includes a plurality of radar signal channels; and at least one sensor configured to measure a physical parameter related to a temperature of the radar MIMIC, and to generate sensor data corresponding to measured values of the physical parameter; and a controller configured to receive the sensor data from the at least one sensor, and to determine a channel operation of the plurality of radar signal channels, including selectively disabling at least a first radar signal channel of the plurality of radar signal channels and selectively enabling at least a second radar signal channel of the plurality of radar signal channels based on the measured values.
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Patent Agency Ranking
公开(公告)号：US20210391650A1
公开(公告)日：2021-12-16
申请号：US17412694
申请日：2021-08-26
Applicant: Infineon Technologies AG
Inventor： Jochen O. Schrattenecker , Niels CHRISTOFFERS , Vincenzo FIORE , Bernhard GSTOETTENBAUER , Helmut KOLLMANN , Alexander MELZER , Alexander ONIC , Rainer STUHLBERGER , Mathias ZINNOECKER
Abstract: A circuit includes a radio frequency (RF) channel including an input node and an output node and being configured to receive an RF oscillator signal at the input node and to provide an RF output signal at the output node; a mixer configured to mix an RF reference signal and an RF test signal representative of the RF output signal to generate a mixer output signal; an analog-to-digital converter configured to sample the mixer output signal in order to provide a sequence of sampled values; and a control circuit configured to provide a sequence of phase offsets by phase-shifting at least one of the RF test signal and the RF reference signal using one or more phase shifters, calculate a spectral value from the sequence of sampled values; and calculate estimated phase information indicating a phase of the RF output signal based on the spectral value.
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17.发明申请公开(公告)号：US20200382170A1
公开(公告)日：2020-12-03
申请号：US16423499
申请日：2019-05-28
Applicant: Infineon Technologies AG
Inventor： Oliver LANG , Werner ARRIOLA , Vincenzo FIORE , Alexander MELZER
Abstract: A circuit includes a transmission channel that outputs a continuous-wave signal based on a reference signal, a transmit monitoring signal path that couples out a portion of the transmit signal as a monitoring signal, a test phase shifter that receives the reference signal and generates a phase-shifted signal based on a sequence of phase offsets applied to the reference signal, a phase mixer that mixes the phase-shifted signal and the monitoring signal to generate a mixer output signal including a plurality of direct current (DC) values, an analog-to-digital converter that samples the mixer output signal in order to provide a sequence of DC values; and a monitor circuit that applies a discrete Fourier transform (DFT) to the sequence of DC values to generate a plurality of DFT bins with corresponding DFT bin values, and generate compensated phase information of the transmission channel using at least two DFT bin values.
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公开(公告)号：US20200025899A1
公开(公告)日：2020-01-23
申请号：US16105111
申请日：2018-08-20
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：US20190293784A1
公开(公告)日：2019-09-26
申请号：US16360818
申请日：2019-03-21
Applicant: Infineon Technologies AG
Inventor： Farhan Bin KHALID , Andreas OCH , Alexander MELZER , Clemens PFEFFER , Andre ROGER , Philipp SCHMIDT
Abstract: A radar system is described. In accordance with one example implementation, the radar system comprises a passive coupler arrangement and also a first radar chip, a second radar chip and a third radar chip. The radar chips each comprise at least one external RF contact and also a local oscillator designed to generate an RF oscillator signal at least in a switched-on state. The external RF contacts of the radar chips are coupled via the coupler arrangement in such a way that, in a first operating mode, the RF oscillator signal can be transferred from the first radar chip via the coupler arrangement to the second radar chip and the third radar chip, and that, in a second operating mode, the RF oscillator signal can be transferred from the second radar chip via the coupler arrangement to the third radar chip.
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公开(公告)号：US20190214724A1
公开(公告)日：2019-07-11
申请号：US16244712
申请日：2019-01-10
Applicant: Infineon Technologies AG
Inventor： Jochen O. SCHRATTENECKER , Niels CHRISTOFFERS , Vincenzo FIORE , Bernhard GSTOETTENBAUER , Helmut KOLLMANN , Alexander MELZER , Alexander ONIC , Rainer STUHLBERGER , Mathias ZINNOECKER
Abstract: A circuit is described herein. In accordance with one embodiment the circuit includes two or more RF channels, wherein each channel includes an input node, a phase shifter and an output node. Each channel is configured to receive an RF oscillator signal at the input node and to provide an RF output signal at the output node. The circuit further includes an RF combiner circuit that is coupled with the outputs of the RF channels and configured to generate a combined signal representing a combination of the RF output signals, and a monitor circuit that includes a mixer and is configured to receive and down-convert the combined signal using an RF reference signal. Thus a mixer output signal is generated that depends on the phases of the RF output signals.
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