Patents by Inventor Timo Haf

Timo Haf has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Frequency response calibration for radio frequency integrated circuit with multiple receiving channels
    Patent number: 11899128
    Abstract: A method of calibrating an analog front end (AFE) filter of a radio frequency integrated circuit (RFIC) includes: making a first measurement of the RFIC at a first measuring frequency while the AFE filter is bypassed; generating a first amplitude estimate and a first phase estimate at the first measuring frequency using the first measurement; making a second measurement of the RFIC at the first measuring frequency while the AFE filter is turned on; generating a second amplitude estimate and a second phase estimate at the first measuring frequency using the second measurement; and calculating a frequency response of the AFE filter at the first measuring frequency, which includes calculating an amplitude response of the AFE filter based on the second amplitude estimate and the first amplitude estimate; and calculating a phase response of the filter based on the first phase estimate and the second phase estimate.
    Type: Grant
    Filed: August 19, 2021
    Date of Patent: February 13, 2024
    Assignee: Infineon Technologies AG
    Inventors: Josef Kulmer, Patrick Hoelzl, Timo Haf
  • FREQUENCY RESPONSE CALIBRATION FOR RADIO FREQUENCY INTEGRATED CIRCUIT WITH MULTIPLE RECEIVING CHANNELS
    Publication number: 20230057105
    Abstract: A method of calibrating an analog front end (AFE) filter of a radio frequency integrated circuit (RFIC) includes: making a first measurement of the RFIC at a first measuring frequency while the AFE filter is bypassed; generating a first amplitude estimate and a first phase estimate at the first measuring frequency using the first measurement; making a second measurement of the RFIC at the first measuring frequency while the AFE filter is turned on; generating a second amplitude estimate and a second phase estimate at the first measuring frequency using the second measurement; and calculating a frequency response of the AFE filter at the first measuring frequency, which includes calculating an amplitude response of the AFE filter based on the second amplitude estimate and the first amplitude estimate; and calculating a phase response of the filter based on the first phase estimate and the second phase estimate.
    Type: Application
    Filed: August 19, 2021
    Publication date: February 23, 2023
    Inventors: Josef Kulmer, Patrick Hoelzl, Timo Haf