Patents by Inventor Ta-Fu Cheng

Ta-Fu Cheng 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).

  • Circular polarized repeater and transmission method thereof
    Publication number: 20090264066
    Abstract: A circular polarized repeater includes a circular polarized receiving antenna for receiving a circular polarized signal, an amplifying circuit electrically connected to the circular polarized receiving antenna which is provided for amplifying the received signal, a circular polarized emitting antenna connected to the amplifying circuit for outputting the amplified signal. The circular polarized repeater is used for a transmission system and the signal is received and then outputted to a predetermined area by the circular polarized repeater so as to improve the quality and efficiency of the system.
    Type: Application
    Filed: April 17, 2008
    Publication date: October 22, 2009
    Inventors: Ta-Fu Cheng, Yueh-Pi Huang, Hao-Chang Su