Patents by Inventor Ashraf Uz Zaman

Ashraf Uz Zaman 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).

  • Patent number: 11936111
    Abstract: An antenna array with a layered structure having a base layer with a metamaterial structure, a printed circuit board (PCB) layers, a feed layer arranged on the opposite side of the PCB from the RF IC(s), and a radiating layer arranged on the feed layer. The radiating layer having a plurality of radiating elements. The metamaterial structure is arranged to attenuate electromagnetic radiation propagating between the at least two adjacent waveguides in the frequency band.
    Type: Grant
    Filed: February 4, 2020
    Date of Patent: March 19, 2024
    Assignee: GAPWAVES AB
    Inventors: Thomas Emanuelsson, Yang Jian, Ashraf Uz Zaman, Wai Yan Yong
  • Publication number: 20220109246
    Abstract: An antenna array with a layered structure comprising a base layer with a metamaterial structure; a printed circuit board (PCB) layer; a feed layer arranged on the opposite side of the PCB from the RF IC(s); and a radiating layer arranged on the feed layer comprising a plurality of radiating elements, wherein the metamaterial structure is arranged to attenuate electromagnetic radiation propagating between the at least two adjacent waveguides in the frequency band.
    Type: Application
    Filed: February 4, 2020
    Publication date: April 7, 2022
    Inventors: Thomas EMANUELSSON, Yang JIAN, Ashraf UZ ZAMAN, Wai YONG
  • Publication number: 20210356504
    Abstract: A measurement device (100) for measuring antenna characteristics of an antenna under test (150, AUT), the AUT having a radiating element (160), the measurement device (100) comprising an exterior surface (110), where a measurement aperture (120) is formed in the exterior surface, and a repetitive structure (130) is arranged on the exterior surface, the repetitive structure (130) comprising a plurality of protruding conductive elements (135) arranged to surround the measurement aperture (120) and to define a passage (140) into the measurement aperture (120), the repetitive structure (130) being configured to attenuate electromagnetic signal propagation in a frequency band past the repetitive structure (130) while allowing propagation via the passage (140).
    Type: Application
    Filed: September 19, 2018
    Publication date: November 18, 2021
    Inventors: Carlo BENCIVENNI, Thomas EMANUELSSON, Ashraf UZ ZAMAN, Arvid BJURKLINT
  • Patent number: 11121475
    Abstract: A phased array is disclosed, including: a base layer including a substrate with a plurality of protruding posts, for stopping wave propagation along the base layer, and a printed circuit board (PCB) arranged on the base layer, and including at least one phased array radio frequency (RF) integrated circuit (IC) on a first side of the PCB facing the base layer and the protruding posts. The PCB further includes feeds for transferring of RF signals from the phased array RF IC(s) to an opposite second side of the PCB. A radiating layer, including a plurality of radiating elements for transmitting and/or receiving RF signals from the phased array antenna is also provided, together with a feeding layer for transfer of RF signals, arranged between the feeds of the PCB on the second side and the radiating elements of the radiating layer.
    Type: Grant
    Filed: September 24, 2018
    Date of Patent: September 14, 2021
    Assignee: GAPWAVES AB
    Inventors: Jian Yang, Thomas Emanuelsson, Ashraf Uz Zaman
  • Patent number: 10811373
    Abstract: A packaging structure (100) having a split-block assembly with a first and a second conducting block section (10A,20A) and at least one transition between a first planar transmission line (2A) and a second transmission line (11A), and one or more input/output ports. The first transmission line (2A) is arranged on a substrate disposed on the first conducting block section (10A) and has a coupling section (3A), a cavity (4A) with a cavity opening in an upper surface of the first conducting block section (10A), and the second transmission line (11A) being in line with the first transmission line (2A) and located on an opposite side of the opening of the cavity (4A).
    Type: Grant
    Filed: October 5, 2016
    Date of Patent: October 20, 2020
    Assignee: GAPWAVES AB
    Inventors: Ashraf Uz Zaman, Jian Yang, Uttam Nandi
  • Publication number: 20200287291
    Abstract: A phased array is disclosed, including: a base layer including a substrate with a plurality of protruding posts, for stopping wave propagation along the base layer, and a printed circuit board (PCB) arranged on the base layer, and including at least one phased array radio frequency (RF) integrated circuit (IC) on a first side of the PCB facing the base layer and the protruding posts. The PCB further includes feeds for transferring of RF signals from the phased array RF IC(s) to an opposite second side of the PCB. A radiating layer, including a plurality of radiating elements for transmitting and/or receiving RF signals from the phased array antenna is also provided, together with a feeding layer for transfer of RF signals, arranged between the feeds of the PCB on the second side and the radiating elements of the radiating layer.
    Type: Application
    Filed: September 24, 2018
    Publication date: September 10, 2020
    Applicant: Gapwaves AB
    Inventors: Jian YANG, Thomas EMANUELSSON, Ashraf UZ ZAMAN
  • Publication number: 20200043875
    Abstract: The present invention relates to a packaging structure (100) comprising a split-block assembly with a first and a second conducting block section (10A,20A) and at least one transition between a first planar transmission line (2A) and a second transmission line (11A), and one or more input/output ports. The first transmission line (2A) is arranged on a substrate, e.g. an MMIC (1A), disposed on the first conducting block section (10A) and comprises a coupling section (3A), the first conducting block (10A) comprises a cavity (4A) with a cavity opening in an upper surface of the first conducting block section (10A) so arranged that, in an assembled state of the split-block assembly, the coupling section (3A) will be located above, or in, the opening of the cavity (4A), the second transmission line (11A) being in line with the first transmission line (2A) and located on an opposite side of the opening of the cavity (4A).
    Type: Application
    Filed: October 5, 2016
    Publication date: February 6, 2020
    Inventors: Ashraf Uz ZAMAN, Jian YANG, Uttam NANDI
  • Patent number: 10381317
    Abstract: The present invention relates to a transition arrangement (100) comprising a transition between a substrate integrated waveguide, SIW, (20) of a circuit arrangement and a waveguide and/or antenna structure (10). It comprises a first conducting plate (1) and a second conducting plate (2). The SIW (20) is arranged on said first conducting plate, and an impedance matching structure (4) is connected to the second conducting plate.
    Type: Grant
    Filed: January 18, 2017
    Date of Patent: August 13, 2019
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Rob Maaskant, Alhassan Aljarosha, Ashraf Uz Zaman
  • Publication number: 20190057945
    Abstract: The present invention relates to a transition arrangement (100) comprising a transition between a substrate integrated waveguide, SIW, (20) of a circuit arrangement and a waveguide and/or antenna structure (10). It comprises a first conducting plate (1) and a second conducting plate (2). The SIW (20) is arranged on said first conducting plate, and an impedance matching structure (4) is connected to the second conducting plate.
    Type: Application
    Filed: January 18, 2017
    Publication date: February 21, 2019
    Inventors: Rob Maaskant, Alhassan Aljarosha, Ashraf Uz Zaman