Patents by Inventor Ahmed El-Zayat

Ahmed El-Zayat 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).

  • Duplexer for integration in communication terminals
    Patent number: 8358182
    Abstract: There is described a duplexer comprising: a dielectric substrate having a circuit-receiving surface and an opposite surface; a ground structure deposited on the circuit-receiving surface or the opposite surface; a first filter connectable to a first terminal and having a first frequency bandpass; a second filter connectable to a second terminal and having a second frequency bandpass different from the first frequency bandpass, the first filter and the second filter each having at least one filter section deposited on the circuit-receiving surface; and an uncovered coupling circuit connectable to a third terminal and deposited on the circuit-receiving surface between the first filter and the second filter, the coupling circuit being spaced apart from the first and second filter by a coupling gap and configured for electromagnetically coupling the first filter and the second filter together.
    Type: Grant
    Filed: February 4, 2010
    Date of Patent: January 22, 2013
    Assignee: Ecole de Technologie Superieure
    Inventors: Ammar Kouki, Ahmed El-Zayat
  • DUPLEXER FOR INTEGRATION IN COMMUNICATION TERMINALS
    Publication number: 20110032050
    Abstract: There is described a duplexer comprising: a dielectric substrate having a circuit-receiving surface and an opposite surface; a ground structure deposited on the circuit-receiving surface or the opposite surface; a first filter connectable to a first terminal and having a first frequency bandpass; a second filter connectable to a second terminal and having a second frequency bandpass different from the first frequency bandpass, the first filter and the second filter each having at least one filter section deposited on the circuit-receiving surface; and an uncovered coupling circuit connectable to a third terminal and deposited on the circuit-receiving surface between the first filter and the second filter, the coupling circuit being spaced apart from the first and second filter by a coupling gap and configured for electromagnetically coupling the first filter and the second filter together.
    Type: Application
    Filed: February 4, 2010
    Publication date: February 10, 2011
    Inventors: Ammar Kouki, Ahmed El-Zayat