Patents by Inventor Negar Reiskarimian

Negar Reiskarimian 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).

  • Circuits and methods for non-reciprocal circulators and transceivers using same
    Patent number: 10581135
    Abstract: In accordance with some embodiments, non-reciprocal circulators are provided, the circulators comprising: a 3?X/4-long ring section having a first end and a second end, wherein ? is an operating wavelength of the non-reciprocal circulator; and a N-path filter having a first port, a second port, and N-paths, each of the N-paths being connected to the first port and the second port. In some of these embodiments, the 3?/4-long ring section includes a transmit port, an antenna port, and a receive port. In some of these embodiments, the transmit port is ?/4 away from the antenna port. In some of these embodiments, the antenna port is ?/4 away from the receive port. In some of these embodiments, the receive port is at the first port of the N-path filter.
    Type: Grant
    Filed: December 7, 2016
    Date of Patent: March 3, 2020
    Assignee: The Trustees of Columbia University in the City of New York
    Inventors: Negar Reiskarimian, Harish Krishnaswamy
  • CIRCUITS AND METHODS FOR NON-RECIPROCAL CIRCULATORS AND TRANSCEIVERS USING SAME
    Publication number: 20180331408
    Abstract: In accordance with some embodiments, non-reciprocal circulators are provided, the circulators comprising: a 3?X/4-long ring section having a first end and a second end, wherein ? is an operating wavelength of the non-reciprocal circulator; and a N-path filter having a first port, a second port, and N-paths, each of the N-paths being connected to the first port and the second port. In some of these embodiments, the 3?/4-long ring section includes a transmit port, an antenna port, and a receive port. In some of these embodiments, the transmit port is ?/4 away from the antenna port. In some of these embodiments, the antenna port is ?/4 away from the receive port. In some of these embodiments, the receive port is at the first port of the N-path filter.
    Type: Application
    Filed: December 7, 2016
    Publication date: November 15, 2018
    Inventors: Negar Reiskarimian, Harish Krishnaswamy