Patents by Inventor Daixi ZHANG

Daixi ZHANG 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).

  • Grating- and fiber-coupled multi-beam coherent receiving system in mid- and far-infrared band
    Patent number: 11159246
    Abstract: A grating- and fiber-coupled multi-beam coherent receiving system in a mid- and far-infrared band includes a mid- and far-infrared local oscillator signal source, a phase grating, a multi-beam fiber coupling system, a 2×2 pixel mid- and far-infrared superconducting HEB mixer, a multi-channel DC bias source, a multi-channel cryogenic low-noise amplifier, and a room-temperature intermediate-frequency and high-resolution spectrum processing unit. In a 2×2 multi-beam superconducting receiving system, an echelle grating and a cryogenic optical fiber are used to distribute and couple the local oscillator signal, and the mid- and far-infrared band high-sensitivity superconducting HEB mixer is used to realize efficient local oscillator signal distribution and coupling, and ultimately achieve high-sensitivity and high-resolution multi-beam spectrum reception in the mid- and far-infrared band.
    Type: Grant
    Filed: July 16, 2020
    Date of Patent: October 26, 2021
    Assignee: PURPLE MOUNTAIN OBSERVATORY, CHINESE ACADEMY OF SCIENCES
    Inventors: Yuan Ren, Shengcai Shi, Daixi Zhang
  • GRATING- AND FIBER-COUPLED MULTI-BEAM COHERENT RECEIVING SYSTEM IN MID- AND FAR-INFRARED BAND
    Publication number: 20210266073
    Abstract: A grating- and fiber-coupled multi-beam coherent receiving system in a mid- and far-infrared band includes a mid- and far-infrared local oscillator signal source, a phase grating, a multi-beam fiber coupling system, a 2×2 pixel mid- and far-infrared superconducting HEB mixer, a multi-channel DC bias source, a multi-channel cryogenic low-noise amplifier, and a room-temperature intermediate-frequency and high-resolution spectrum processing unit. In a 2×2 multi-beam superconducting receiving system, an echelle grating and a cryogenic optical fiber are used to distribute and couple the local oscillator signal, and the mid- and far-infrared band high-sensitivity superconducting HEB mixer is used to realize efficient local oscillator signal distribution and coupling, and ultimately achieve high-sensitivity and high-resolution multi-beam spectrum reception in the mid- and far-infrared band.
    Type: Application
    Filed: July 16, 2020
    Publication date: August 26, 2021
    Applicant: Purple Mountain Observatory, Chinese Academy of Sciences
    Inventors: Yuan REN, Shengcai SHI, Daixi ZHANG