Patents by Inventor Ka Ming MAK

Ka Ming MAK 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: 10862220
    Abstract: A system and method for an antenna including two or more radiation elements on a side of a substrate; a ground plane on an opposite side of the substrate; and a feeding network including a plurality of branch feeding elements. Each of the radiation elements has one or more feeding ports such that each of the plurality of branch feeding element is connected to a feeding port of a respective one of the radiation elements.
    Type: Grant
    Filed: August 30, 2017
    Date of Patent: December 8, 2020
    Assignee: STAR SYSTEMS INTERNATIONAL LIMITED
    Inventors: Chi Lun Mak, Hau Wah Lai, Ka Ming Mak, Kwok Kan So, Hang Wong
  • Publication number: 20190319366
    Abstract: A system and method for an antenna including two or more radiation elements on a side of a substrate; a ground plane on an opposite side of the substrate; and a feeding network including a plurality of branch feeding elements. Each of the radiation elements has one or more feeding ports such that each of the plurality of branch feeding element is connected to a feeding port of a respective one of the radiation elements.
    Type: Application
    Filed: August 30, 2017
    Publication date: October 17, 2019
    Inventors: Chi Lun Mak, Hau Wah Lai, Ka Ming Mak, Kwok Kan So, Hang Wong
  • Patent number: 10033105
    Abstract: An aperture coupled, single fed, microstrip line feed for a circularly polarized patch antenna is provided that can transmit transmissions with a low profile, wide impedance, and axial ratio bandwidths. The circularly polarized patch antenna includes a double sided printed circuit board with a non-linear slots etched into a ground plane of one side of the printed circuit board, with a printed microstrip line printed on the opposite side of the printed circuit board. The microstrip line can be hook shaped and intersect each of the slots. The non linear slots can be radially arranged around a locus or area on the circuit board.
    Type: Grant
    Filed: October 30, 2017
    Date of Patent: July 24, 2018
    Assignee: CITY UNIVERSITY OF HONG KONG
    Inventors: Hau Wah Lai, Ka Ming Mak, Kwai Man Luk, Chi Hou Chan
  • Publication number: 20180048068
    Abstract: An aperture coupled, single fed, microstrip line feed for a circularly polarized patch antenna is provided that can transmit transmissions with a low profile, wide impedance, and axial ratio bandwidths. The circularly polarized patch antenna includes a double sided printed circuit board with a non-linear slots etched into a ground plane of one side of the printed circuit board, with a printed microstrip line printed on the opposite side of the printed circuit board. The microstrip line can be hook shaped and intersect each of the slots. The non linear slots can be radially arranged around a locus or area on the circuit board.
    Type: Application
    Filed: October 30, 2017
    Publication date: February 15, 2018
    Inventors: Hau Wah LAI, Ka Ming MAK, Kwai Man LUK, Chi Hou CHAN
  • Patent number: 9843102
    Abstract: Described herein are shorted bowtie patch antennas. The shorted bowtie patch antenna includes parasitic shorted patches. Signals are received by the shorted bowtie patch antenna. The received signals are propagated to a receiver. Signals sent from a transmitter are transmitted by the shorted bowtie patch antenna. Current is induced in the parasitic shorted patches during receiving and transmitting of signals.
    Type: Grant
    Filed: November 14, 2014
    Date of Patent: December 12, 2017
    Assignee: CITY UNIVERSITY OF HONG KONG
    Inventors: Hau Wah Lai, Ka Ming Mak, Kwai Man Luk, Chi Hou Chan
  • Patent number: 9819088
    Abstract: An aperture coupled, single fed, microstrip line feed for a circularly polarized patch antenna is provided that can transmit transmissions with a low profile, wide impedance, and axial ratio bandwidths. The circularly polarized patch antenna includes a double sided printed circuit board with a non-linear slots etched into a ground plane of one side of the printed circuit board, with a printed microstrip line printed on the opposite side of the printed circuit board. The microstrip line can be hook shaped and intersect each of the slots. The non linear slots can be radially arranged around a locus or area on the circuit board. A metal patch can placed above the ground plane and electromagnetic waves emanating from the microstrip line can couple to the patch through the non-linear strips and excite the patch such that it radiates an electromagnetic transmission.
    Type: Grant
    Filed: December 9, 2014
    Date of Patent: November 14, 2017
    Assignee: CITY UNIVERSITY OF HONG KONG
    Inventors: Hau Wah Lai, Ka Ming Mak, Kwai Man Luk, Chi Hou Chan
  • Publication number: 20160164182
    Abstract: An aperture coupled, single fed, microstrip line feed for a circularly polarized patch antenna is provided that can transmit transmissions with a low profile, wide impedance, and axial ratio bandwidths. The circularly polarized patch antenna includes a double sided printed circuit board with a non-linear slots etched into a ground plane of one side of the printed circuit board, with a printed microstrip line printed on the opposite side of the printed circuit board. The microstrip line can be hook shaped and intersect each of the slots. The non linear slots can be radially arranged around a locus or area on the circuit board.
    Type: Application
    Filed: December 9, 2014
    Publication date: June 9, 2016
    Inventors: Hau Wah LAI, Ka Ming MAK, Kwai Man LUK, Chi Hou CHAN
  • Publication number: 20160141757
    Abstract: Described herein are shorted bowtie patch antennas. The shorted bowtie patch antenna includes parasitic shorted patches. Signals are received by the shorted bowtie patch antenna. The received signals are propagated to a receiver. Signals sent from a transmitter are transmitted by the shorted bowtie patch antenna. Current is induced in the parasitic shorted patches during receiving and transmitting of signals.
    Type: Application
    Filed: November 14, 2014
    Publication date: May 19, 2016
    Inventors: Hau Wah LAI, Ka Ming MAK, Kwai Man LUK, Chi Hou CHAN