Patents by Inventor Ngwe Thawdar

Ngwe Thawdar 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).

  • Smart Metal-Graphene Hybrid Reflectarray at THz Frequencies
    Publication number: 20220393363
    Abstract: A hybrid radiating element may comprise a dielectric substrate having a thickness, a top surface and a bottom surface, and an electrically conductive patch disposed on the top surface of the dielectric substrate. The hybrid radiating element may further comprise a graphene stub disposed on the top surface of the dielectric substrate. The graphene stub may be contiguous with, and electrically coupled to, the electrically conductive patch. The hybrid radiating element may further comprise an electrically conductive layer disposed on the bottom surface of the dielectric substrate. An array of hybrid radiating elements may be arranged in a grid pattern of M rows and N columns. A codebook set of biasing voltages may be arranged to drive the radiating elements in the array as a phase transformation matrix, thereby manipulating the reflection of an incoming electromagnetic wave.
    Type: Application
    Filed: May 27, 2022
    Publication date: December 8, 2022
    Inventors: Josep Miquel Jornet, Arjun Singh, Michael Andrello, Erik Einarsson, Ngwe Thawdar
  • Plasmonic phase modulator and method of modulating an SPP wave
    Patent number: 10996379
    Abstract: A plasmonic phase modulator is provided. The modulator has a conductive layer, and a dielectric layer disposed on the conductive layer. A plasmonic layer is disposed on the dielectric layer. A plasmonic layer is disposed on the dielectric layer. The plasmonic layer is conductive to surface plasmon polariton (SPP) waves. The plasmonic layer may be, for example, a graphene sheet. A voltage signal source is operatively connected between the conductive layer and the plasmonic layer for modulating a propagation speed of an SPP wave propagating on the plasmonic layer.
    Type: Grant
    Filed: April 9, 2018
    Date of Patent: May 4, 2021
    Assignees: The Research Foundation for The State University New York, The Research Foundation of CUNY
    Inventors: Josep Jornet, Prateek Kumar Singh, Gregory Aizin, Ngwe Thawdar, Michael Medley
  • PLASMONIC PHASE MODULATOR AND METHOD OF MODULATING AN SPP WAVE
    Publication number: 20210088699
    Abstract: A plasmonic phase modulator is provided. The modulator has a conductive layer, and a dielectric layer disposed on the conductive layer. A plasmonic layer is disposed on the dielectric layer. A plasmonic layer is disposed on the dielectric layer. The plasmonic layer is conductive to surface plasmon polariton (SPP) waves. The plasmonic layer may be, for example, a graphene sheet. A voltage signal source is operatively connected between the conductive layer and the plasmonic layer for modulating a propagation speed of an SPP wave propagating on the plasmonic layer.
    Type: Application
    Filed: April 9, 2018
    Publication date: March 25, 2021
    Inventors: Josep Jornet, Prateek Kumar Singh, Gregory Aizin, Ngwe Thawdar, Michael Medley