Patents by Inventor Kehuai WU

Kehuai WU 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).

  • Wireless communication system with a modulation bandwidth comparable to or exceeding the bandwidth of the transmitter and/or receiver antennas
    Patent number: 8514965
    Abstract: A wireless communication system includes a) a first device having a transmitter part with a Tx-antenna for transmitting an electrical signal having a signal bandwidth BWsig and b) a second device having a receiver part with an Rx-antenna for receiving the transmitted electromagnetic signal. At least one of the Tx- and Rx- antennas is a narrowband antenna having an antenna bandwidth BWant, wherein the Tx- and/or Rx-antenna bandwidths fulfil the relation BWant=k·BWsig. The system is adapted to provide that k is smaller than 1.25, and the antenna bandwidth BWant is defined as the ?3dB bandwidth of the loaded antenna when it is connected to the communication system, and the signal bandwidth BWsig is defined as the bandwidth within which 99% of the desired signal power is located.
    Type: Grant
    Filed: March 8, 2011
    Date of Patent: August 20, 2013
    Assignee: Oticon A/S
    Inventors: Kåre Tais Christensen, Kehuai Wu, Rasmus Glarborg Jensen
  • WIRELESS COMMUNICATION SYSTEM WITH A MODULATION BANDWIDTH COMPARABLE TO OR EXCEEDING THE BANDWIDTH OF THE TRANSMITTER AND/OR RECEIVER ANTENNAS
    Publication number: 20110222621
    Abstract: A wireless communication system includes a) a first device having a transmitter part with a Tx-antenna for transmitting an electrical signal having a signal bandwidth BWsig and b) a second device having a receiver part with an Rx-antenna for receiving the transmitted electromagnetic signal. At least one of the Tx- and Rx-antennas is a narrowband antenna having an antenna bandwidth BWant, wherein the Tx- and/or Rx-antenna bandwidths fulfil the relation BWant=k·BWsig. The system is adapted to provide that k is smaller than 1.25, and the antenna bandwidth BWant is defined as the ?3 dB bandwidth of the loaded antenna when it is connected to the communication system, and the signal bandwidth BWsig is defined as the bandwidth within which 99% of the desired signal power is located.
    Type: Application
    Filed: March 8, 2011
    Publication date: September 15, 2011
    Applicant: OTICON A/S
    Inventors: Kåre Tais CHRISTENSEN, Kehuai WU, Rasmus Glarborg JENSEN