Patents by Inventor Kong Toh

Kong 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
    Publication number: 20060208826
    Abstract: An RF switch circuit (10) and a turner (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: Application
    Filed: March 11, 2004
    Publication date: September 21, 2006
    Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V.
    Inventor: Kong Toh