Patents by Inventor Jun Jun Xu

Jun Jun Xu 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).

  • MOBILE WIRELESS COMMUNICATIONS DEVICE WITH ANTENNA CONTACT HAVING REDUCED RF INDUCTANCE
    Publication number: 20110163924
    Abstract: A mobile wireless communications device includes a housing and at least one circuit board. Radio frequency (RF) circuitry is carried by the circuit board and includes a transceiver. A processor is carried by the at least one circuit board and operative with the RF circuitry. An antenna is mounted within the housing. An antenna contact is secured on the at least one circuit board and operatively connects the RF circuitry and engages the antenna at an antenna contact point. Electromagnetic interference (EMI) shielding is positioned at the antenna contact point and reduces RF inductance effects.
    Type: Application
    Filed: March 15, 2011
    Publication date: July 7, 2011
    Applicant: Research In Motion Limited
    Inventors: Lizhong ZHU, George Mankaruse, Michael Corrigan, Perry Jarmuszewski, Jun Jun Xu
  • Mobile wireless communications device with antenna contact having reduced RF inductance
    Patent number: 7932864
    Abstract: A mobile wireless communications device includes a housing and at least one circuit board. Radio frequency (RF) circuitry is carried by the circuit board and includes a transceiver. A processor is carried by the at least one circuit board and operative with the RF circuitry. An antenna is mounted within the housing. An antenna contact is secured on the at least one circuit board and operatively connects the RF circuitry and engages the antenna at an antenna contact point. Electromagnetic interference (EMI) shielding is positioned at the antenna contact point and reduces RF inductance effects.
    Type: Grant
    Filed: July 15, 2008
    Date of Patent: April 26, 2011
    Assignee: Research In Motion Limited
    Inventors: Lizhong Zhu, George Mankaruse, Michael Corrigan, Perry Jarmuszewski, Jun Jun Xu
  • MOBILE WIRELESS COMMUNICATIONS DEVICE WITH ANTENNA CONTACT HAVING REDUCED RF INDUCTANCE
    Publication number: 20100013718
    Abstract: A mobile wireless communications device includes a housing and at least one circuit board. Radio frequency (RF) circuitry is carried by the circuit board and includes a transceiver. A processor is carried by the at least one circuit board and operative with the RF circuitry. An antenna is mounted within the housing. An antenna contact is secured on the at least one circuit board and operatively connects the RF circuitry and engages the antenna at an antenna contact point. Electromagnetic interference (EMI) shielding is positioned at the antenna contact point and reduces RF inductance effects.
    Type: Application
    Filed: July 15, 2008
    Publication date: January 21, 2010
    Applicant: Research In Motion Limited
    Inventors: Lizhong ZHU, George Mankaruse, Michael Corrigan, Perry Jarmuszewski, Jun Jun Xu