Patents by Inventor Mitra Nasresfahani

Mitra Nasresfahani 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).

  • Three dimensional tunable filters with an absolute constant bandwidth and method
    Patent number: 10056664
    Abstract: A tunable bandpass filter to provide a constant absolute bandwidth across the entire tuning range. The filter comprises of a plurality of tunable resonators, each having an enclosure. A resonating structure extending upwardly from the bottom surface of the enclosure and a tuning screw with a flat head extending downwardly from the top surface of the enclosure, wherein the resonating structure and the flat head of the screw face each other and form a gap. The height of the tuning screw can be adjusted to change the gap between the resonating structure and the flat head. The adjustable gap of the present filter allows for tunable filter operation.
    Type: Grant
    Filed: August 17, 2015
    Date of Patent: August 21, 2018
    Inventors: Fengxi Huang, Siamak Fouladi Azarnaminy, Mitra Nasresfahani, Raafat R. Mansour
  • THREE DIMENSIONAL TUNABLE FILTERS WITH AN ABSOLUTE CONSTANT BANDWIDTH AND METHOD
    Publication number: 20160049710
    Abstract: A tunable bandpass filter to provide a constant absolute bandwidth across the entire tuning range. The filter comprises of a plurality of tunable resonators, each having an enclosure. A resonating structure extending upwardly from the bottom surface of the enclosure and a tuning screw with a flat head extending downwardly from the top surface of the enclosure, wherein the resonating structure and the flat head of the screw face each other and form a gap. The height of the tuning screw can be adjusted to change the gap between the resonating structure and the flat head. The adjustable gap of the present filter allows for tunable filter operation.
    Type: Application
    Filed: August 17, 2015
    Publication date: February 18, 2016
    Inventors: Fengxi Huang, Siamak Fouladi Azarnaminy, Mitra Nasresfahani, Raafat R. Mansour