Patents by Inventor Adrian DOBROIU

Adrian DOBROIU 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).

  • Sub-carrier modulated terahertz radar
    Patent number: 11506774
    Abstract: The present invention is the sub-carrier modulated terahertz radar that modulates a main-carrier signal in the terahertz frequency band, which is generated from a resonant tunneling diode (RTD), by a sub-carrier signal in a gigahertz frequency band whose frequency varies periodically, irradiates a frequency-modulated irradiation light to a target, detects and demodulates a reflected light from the target, mixes a demodulated signal with the sub-carrier signal, performs a Fourier transform on a mixed signal, and measures a distance from an irradiation position to the target by using a Fourier-transformed frequency signal.
    Type: Grant
    Filed: December 21, 2020
    Date of Patent: November 22, 2022
    Assignee: TOKYO INSTITUTE OF TECHNOLOGY
    Inventors: Masahiro Asada, Safumi Suzuki, Adrian Dobroiu
  • SUB-CARRIER MODULATED TERAHERTZ RADAR
    Publication number: 20210190931
    Abstract: The present invention is the sub-carrier modulated terahertz radar that modulates a main-carrier signal in the terahertz frequency band, which is generated from a resonant tunneling diode (RTD), by a sub-carrier signal in a gigahertz frequency band whose frequency varies periodically, irradiates a frequency-modulated irradiation light to a target, detects and demodulates a reflected light from the target, mixes a demodulated signal with the sub-carrier signal, performs a Fourier transform on a mixed signal, and measures a distance from an irradiation position to the target by using a Fourier-transformed frequency signal.
    Type: Application
    Filed: December 21, 2020
    Publication date: June 24, 2021
    Inventors: Masahiro ASADA, Safumi SUZUKI, Adrian DOBROIU