Patents by Inventor Walid Al-Bondak

Walid Al-Bondak 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).

  • Subharmonic carrier-canceling baseband/K upconverter system
    Publication number: 20030060160
    Abstract: A subharmonic carrier-canceling baseband/K upconverter system uses a first splitter to separate an incoming RF signal into two equal components: in-phase (1) and quadrature (Q, 180 degrees delayed). A second splitter is used to separate a local oscillator signal into two equal components: in-phase (I) and quadrature (Q, 90 degrees delayed). A first subharmonic mixer is used to mix both I components, while a second subharmonic mixer is used to mix both Q components. The outputs of both mixers are then combined to produce an output RF signal having reduced second order harmonics close to said local oscillator frequency.
    Type: Application
    Filed: September 21, 2001
    Publication date: March 27, 2003
    Inventors: Xiaojuen Yuan, Adrian Gilbert, Shih-Chang Wu, Christopher Whiteside, Walid Al-Bondak, Janaki R. Potukuchi