Patents by Inventor Kong Lim Toh

Kong Lim Toh 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).

  • Electronically controllable RF switch
    Patent number: 7609127
    Abstract: An RF switch circuit (10) and a tuner (12) comprising an RF switch circuit are described. The switch circuit comprises at least two input terminals and one output terminal. The input terminals are connected to different RF signal sources, e. g. a terrestrial TV antenna (16) and a TV cable network (18). The circuit comprises first SPST switches (28, 30), each connected to one of the input terminals and a second, SPDT switch (32) connected to the first SPST switches. The switch circuit achieves high isolation performance between the input terminals (20, 22).
    Type: Grant
    Filed: March 11, 2004
    Date of Patent: October 27, 2009
    Assignee: NXP B.V.
    Inventor: Kong Lim Toh