Patents by Inventor KUN-SUNG LIU

KUN-SUNG LIU 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).

  • Reader and RFID reader
    Patent number: 9520902
    Abstract: A reader is provided, including a power amplifier (PA), a low-noise amplifier (LNA), a circulator, an auto-tuning matching network, and a control circuit. The PA emits a first RF transmission signal. The LNA transmits a first RF induced signal corresponding to the first RF transmission signal. The circulator is coupled between the PA and LNA, transmits the first RF transmission signal to an RF connection terminal or receives the first RF induced signal from the RF connection terminal. The auto-tuning matching network is coupled to the circulator, matches impedances between the circulator and the RF connection terminal. The control circuit is coupled to the auto-tuning matching network, adjusts the auto-tuning matching network to match impedances between the circulator and the RF connection terminal.
    Type: Grant
    Filed: July 23, 2015
    Date of Patent: December 13, 2016
    Assignee: Wistron NeWeb Corp.
    Inventors: Chung-Ping Chang, Kun-Sung Liu, Chia-Chang Liu, Chun-Hsiung Chuang
  • READER AND RFID READER
    Publication number: 20160104015
    Abstract: A reader is provided, including a power amplifier (PA), a low-noise amplifier (LNA), a circulator, an auto-tuning matching network, and a control circuit. The PA emits a first RF transmission signal. The LNA transmits a first RF induced signal corresponding to the first RF transmission signal. The circulator is coupled between the PA and LNA, transmits the first RF transmission signal to an RF connection terminal or receives the first RF induced signal from the RF connection terminal. The auto-tuning matching network is coupled to the circulator, matches impedances between the circulator and the RF connection terminal. The control circuit is coupled to the auto-tuning matching network, adjusts the auto-tuning matching network to match impedances between the circulator and the RF connection terminal.
    Type: Application
    Filed: July 23, 2015
    Publication date: April 14, 2016
    Inventors: CHUNG-PING CHANG, KUN-SUNG LIU, CHIA-CHANG LIU, CHUN-HSIUNG CHUANG