Patents by Inventor Harry Hang ZHU

Harry Hang ZHU 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).

  • Method and apparatus for digital VSWR measurement in advanced antenna systems (AAS)
    Patent number: 11867735
    Abstract: A method and transmitter for determining voltage standing wave ratios, VSWR, of an antenna array having multiple subarrays, each subarray having two branches. According to one aspect, a method includes grouping the branches of the 5 antenna array to form a number of groups, each group being formed so that nearest branches in group are separated by at least one branch not in the group. For each group, the method includes combining reflected signals from the branches of the group to produce a first signal YREFL and combining forward signals from the 10 branches of the group to produce a second signal YFWD; calculating a reflected power PREFL and a forward power PFWD and calculating a VSWR for the group based on the reflected power PREFL and the forward power PFWD.
    Type: Grant
    Filed: October 15, 2018
    Date of Patent: January 9, 2024
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Ahmed Badawy, Marthinus Willem Da Silveira, Harry Hang Zhu
  • METHOD AND APPARATUS FOR DIGITAL VSWR MEASUREMENT IN ADVANCED ANTENNA SYSTEMS (AAS)
    Publication number: 20210389357
    Abstract: A method and transmitter for determining voltage standing wave ratios, VSWR, of an antenna array having multiple subarrays, each subarray having two branches. According to one aspect, a method includes grouping the branches of the 5 antenna array to form a number of groups, each group being formed so that nearest branches in group are separated by at least one branch not in the group. For each group, the method includes combining reflected signals from the branches of the group to produce a first signal YREFL and combining forward signals from the 10 branches of the group to produce a second signal YFWD; calculating a reflected power PREFL and a forward power PFWD and calculating a VSWR for the group based on the reflected power PREFL and the forward power PFWD.
    Type: Application
    Filed: October 15, 2018
    Publication date: December 16, 2021
    Inventors: Ahmed BADAWY, Marthinus Willem DA SILVEIRA, Harry Hang ZHU