Patents by Inventor Irfan Ashiq

Irfan Ashiq 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).

  • Ultra-broadband diplexer using waveguide and planar transmission lines
    Patent number: 9252470
    Abstract: A hybrid diplexer combining planar transmission line(s) and a waveguide is disclosed. In one embodiment, a diplexer includes first, second, and third ports. The diplexer also includes a first signal path and a second signal path. The first signal path may be used to convey lower frequencies, and may be implemented using planar transmission lines. The second signal path may be used to convey higher frequencies, and may be implemented, at least in part, using a waveguide. The first signal path may be coupled between the first port and the second port, while the second signal path may be coupled between the first port and the third port. In one embodiment, the first signal path may implement a low-pass filter, while the second signal path may implement a high-pass filter.
    Type: Grant
    Filed: September 17, 2013
    Date of Patent: February 2, 2016
    Assignee: National Instruments Corporation
    Inventors: Amarpal S. Khanna, Irfan Ashiq
  • Ultra-Broadband Diplexer Using Waveguide and Planar Transmission Lines
    Publication number: 20150077195
    Abstract: A hybrid diplexer combining planar transmission line(s) and a waveguide is disclosed. In one embodiment, a diplexer includes first, second, and third ports. The diplexer also includes a first signal path and a second signal path. The first signal path may be used to convey lower frequencies, and may be implemented using planar transmission lines. The second signal path may be used to convey higher frequencies, and may be implemented, at least in part, using a waveguide. The first signal path may be coupled between the first port and the second port, while the second signal path may be coupled between the first port and the third port. In one embodiment, the first signal path may implement a low-pass filter, while the second signal path may implement a high-pass filter.
    Type: Application
    Filed: September 17, 2013
    Publication date: March 19, 2015
    Applicant: National Instruments Corporation
    Inventors: Amarpal S. Khanna, Irfan Ashiq