Patents by Inventor Shi-Yung Wang

Shi-Yung Wang 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).

  • Tri-frequency duplexer circuit and multi-frequency duplexer circuit
    Patent number: 7994875
    Abstract: The present invention discloses a tri-frequency duplexer circuit and multi-frequency duplexer circuit. The tri-frequency duplexer circuit comprises a microstrip line circuit, two first mushrooms, two second mushrooms and two third mushrooms. The microstrip line circuit comprises a first Input/Output (I/O) port, a second I/O port, a third I/O port and a fourth I/O port. The two first mushrooms are respectively disposed at transmission line paths between the first I/O port and the second I/O port and between the first I/O port and the third I/O port. The two second mushrooms are respectively disposed at transmission line paths between the first I/O port and the second I/O port and between the first I/O port and the fourth I/O port. The two third mushrooms are respectively disposed at transmission line paths between the first I/O port and the third I/O port and between the first I/O port and the fourth I/O port.
    Type: Grant
    Filed: May 21, 2009
    Date of Patent: August 9, 2011
    Assignee: National Chiao Tung University
    Inventors: Fu-Chiarng Chen, Shi-Yung Wang
  • TRI-FREQUENCY DUPLEXER CIRCUIT AND MULTI-FREQUENCY DUPLEXER CIRCUIT
    Publication number: 20100283553
    Abstract: The present invention discloses a tri-frequency duplexer circuit and multi-frequency duplexer circuit. The tri-frequency duplexer circuit comprises a microstrip line circuit, two first mushrooms, two second mushrooms and two third mushrooms. The microstrip line circuit comprises a first Input/Output (I/O) port, a second I/O port, a third I/O port and a fourth I/O port. The two first mushrooms are respectively disposed at transmission line paths between the first I/O port and the second I/O port and between the first I/O port and the third I/O port. The two second mushrooms are respectively disposed at transmission line paths between the first I/O port and the second I/O port and between the first I/O port and the fourth I/O port. The two third mushrooms are respectively disposed at transmission line paths between the first I/O port and the third I/O port and between the first I/O port and the fourth I/O port.
    Type: Application
    Filed: May 21, 2009
    Publication date: November 11, 2010
    Applicant: NATIONAL CHIAO TUNG UNIVERSITY
    Inventors: Fu-Chiarng Chen, Shi-Yung Wang