Patents by Inventor Haolin LI

Haolin LI 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).

  • Sigma-delta modulated RF over fiber and filtering
    Patent number: 10567083
    Abstract: A communication system is provided for transmitting a RF signal, which has a frequency band. The communication system comprises: a sigma delta modulator for modulating the RF signal into a broadband signal wherein the signal to noise ratio of the broadband signal is higher in the frequency band of the RF signal than outside the frequency band of the RF signal; an optical transmitter connected with the sigma delta modulator and with an optical fiber for transmitting the broadband signal over the optical fiber; a photo-detector configured for receiving the broadband signal from the optical fiber and converting it into an electrical signal; an output device and a matching circuit configured for power matching and/or noise matching of the photo-detector, at the frequency band of the RF signal, with the output device.
    Type: Grant
    Filed: February 28, 2018
    Date of Patent: February 18, 2020
    Assignees: UNIVERSITEIT GENT, IMEC VZW
    Inventors: Guy Torfs, Johan Bauwelinck, Haolin Li, Laurens Breyne
  • SIGMA-DELTA MODULATED RF OVER FIBER AND FILTERING
    Publication number: 20180254829
    Abstract: A communication system is provided for transmitting a RF signal, which has a frequency band. The communication system comprises: a sigma delta modulator for modulating the RF signal into a broadband signal wherein the signal to noise ratio of the broadband signal is higher in the frequency band of the RF signal than outside the frequency band of the RF signal; an optical transmitter connected with the sigma delta modulator and with an optical fiber for transmitting the broadband signal over the optical fiber; a photo-detector configured for receiving the broadband signal from the optical fiber and converting it into an electrical signal; an output device and a matching circuit configured for power matching and/or noise matching of the photo-detector, at the frequency band of the RF signal, with the output device.
    Type: Application
    Filed: February 28, 2018
    Publication date: September 6, 2018
    Inventors: Guy TORFS, Johan BAUWELINCK, Haolin LI, Laurens BREYNE