Patents by Inventor Seiichiro KITAGAWA

Seiichiro KITAGAWA 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-variable terahertz oscillator and method for manufacturing the same
    Patent number: 10270390
    Abstract: A small-sized frequency-variable terahertz oscillator has a successive and large frequency-sweeping width even at a room temperature. The frequency-variable terahertz oscillator includes a slot antenna, a resonant tunneling diode and a varactor diode arranged parallel to each other along the slot antenna. The frequency-variable terahertz oscillator oscillates in a terahertz frequency range when the resonant tunneling diode and the varactor diode are separately applied with a direct voltage.
    Type: Grant
    Filed: September 5, 2014
    Date of Patent: April 23, 2019
    Assignee: TOKYO INSTITUTE OF TECHNOLOGY
    Inventors: Safumi Suzuki, Seiichiro Kitagawa, Masahiro Asada
  • FREQUENCY-VARIABLE TERAHERTZ OSCILLATOR AND METHOD FOR MANUFACTURING THE SAME
    Publication number: 20170155361
    Abstract: A small-sized frequency-variable terahertz oscillator has a successive and large frequency-sweeping width even at a room temperature. The frequency-variable terahertz oscillator includes a slot antenna, a resonant tunneling diode and a varactor diode arranged parallel to each other along the slot antenna. The frequency-variable terahertz oscillator oscillates in a terahertz frequency range when the resonant tunneling diode and the varactor diode are separately applied with a direct voltage.
    Type: Application
    Filed: September 5, 2014
    Publication date: June 1, 2017
    Inventors: Safumi SUZUKI, Seiichiro KITAGAWA, Masahiro ASADA