Patents by Inventor Sun Shuo

Sun Shuo 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).

  • Structure of dual directional couplers for multiple-band power amplifiers
    Patent number: 9647314
    Abstract: A directional coupler for a wireless communication device includes a first input port, a first output port, a second input port, a second output port, and a coupled port. The first input port and the first output port are respectively configured to receive and provide a first signal to be transmitted from the wireless communication device. The second input port and the second output port are respectively configured to receive and provide a second signal to be transmitted from the wireless communication device. A coupled port is configured to selectively provide a coupled signal corresponding to each of, in respective modes, the first signal and the second signal.
    Type: Grant
    Filed: May 7, 2015
    Date of Patent: May 9, 2017
    Assignee: Marvell International Ltd.
    Inventors: Huy Thong Nguyen, Poh Boon Leong, Xiaowei Zhong, Sun Shuo
  • Impedance matching for variable impedance antennas
    Patent number: 9473185
    Abstract: An impedance matching circuit for a wireless communication device includes: a first node that receives a first impedance; a second node that is connected to an antenna having a second impedance; a first variable capacitor that is connected between the first node and a third node; a second variable capacitor that is connected between the third node and a reference potential; a first inductive element that is connected in parallel with the second variable capacitor between the third node and the reference potential; and a third variable capacitor and a second inductive element that are connected in series between the third node and the second node.
    Type: Grant
    Filed: April 3, 2015
    Date of Patent: October 18, 2016
    Assignee: Marvell World Trade LTD.
    Inventors: Huy Thong Nguyen, Poh Boon Leong, Xiaowei Zhong, Sun Shuo
  • IMPEDANCE MATCHING FOR VARIABLE IMPEDANCE ANTENNAS
    Publication number: 20150288400
    Abstract: An impedance matching circuit for a wireless communication device includes: a first node that receives a first impedance; a second node that is connected to an antenna having a second impedance; a first variable capacitor that is connected between the first node and a third node; a second variable capacitor that is connected between the third node and a reference potential; a first inductive element that is connected in parallel with the second variable capacitor between the third node and the reference potential; and a third variable capacitor and a second inductive element that are connected in series between the third node and the second node.
    Type: Application
    Filed: April 3, 2015
    Publication date: October 8, 2015
    Inventors: Huy Thong Nguyen, Poh Boon Leong, Xiaowei Zhong, Sun Shuo