公开(公告)号：US10090939B2

公开(公告)日：2018-10-02

申请号：US15685542

申请日：2017-08-24

Applicant: Infineon Technologies AG

Inventor： Oliver Frank ,  Guenter Haider ,  Jochen O. Schrattenecker

IPC: H04B17/00 ,  H04B17/14 ,  H04B15/00

Abstract: An integrated circuit is described herein. According to one or more embodiments, the integrated circuit includes a local oscillator with a voltage-controlled oscillator (VCO) that generates a local oscillator signal. Further, the integrated circuit includes a frequency divider coupled to the VCO downstream thereof. The frequency divider provides a frequency-divided local oscillator signal by reducing the frequency of the local oscillator signal by a constant factor. A first test pad of the integrated circuit is configured to receive a reference oscillator signal. Further, the integrated circuit includes a first mixer that receives the reference oscillator signal and the frequency-divided local oscillator signal to down-convert the frequency-divided local oscillator signal.

公开(公告)号：US10057795B2

公开(公告)日：2018-08-21

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

IPC: H04B3/46 ,  H04B17/00 ,  H04Q1/20 ,  H04W24/06 ,  H04B1/16 ,  H03F3/195 ,  H03M1/12

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.

公开(公告)号：US10278084B2

公开(公告)日：2019-04-30

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

IPC: G01S19/23 ,  H04W24/06 ,  H04B1/16 ,  H03F3/195 ,  H03M1/12

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.

公开(公告)号：US10205541B2

公开(公告)日：2019-02-12

申请号：US16105431

申请日：2018-08-20

Applicant: Infineon Technologies AG

Inventor： Oliver Frank ,  Guenter Haider ,  Jochen O. Schrattenecker

IPC: H04B17/00 ,  G01R31/317 ,  H04B15/00 ,  H04B17/14

Abstract: An integrated circuit is described herein. According to one or more embodiments, the integrated circuit includes a local oscillator with a voltage-controlled oscillator (VCO) that generates a local oscillator signal. Further, the integrated circuit includes a frequency divider coupled to the VCO downstream thereof. The frequency divider provides a frequency-divided local oscillator signal by reducing the frequency of the local oscillator signal by a constant factor. A first test pad of the integrated circuit is configured to receive a reference oscillator signal. Further, the integrated circuit includes a first mixer that receives the reference oscillator signal and the frequency-divided local oscillator signal to down-convert the frequency-divided local oscillator signal.