Patents by Inventor Haisu Ju

Haisu Ju 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).

  • Radio frequency system with tunable filters including tunable filter with mutually coupled inductors
    Patent number: 11824569
    Abstract: Aspects of this disclosure relate to a radio frequency system with tunable notch filtering. The radio frequency system includes a first tunable filter and a second tunable filter. The first tunable filter is coupled between an output of a power amplifier and a radio frequency switch. The second tunable filter includes mutually coupled inductors and a tunable impedance circuit electrically connected to at least one of the mutually coupled inductors. The second tunable filter is coupled between an antenna switch and an antenna node. Related methods and wireless communication devices are also disclosed.
    Type: Grant
    Filed: August 24, 2021
    Date of Patent: November 21, 2023
    Assignee: Skyworks Solutions, Inc.
    Inventors: Fei Jia, Joshua Kawika Ellis, Kun Chen, Shayan Farahvash, Haisu Ju, Haibo Cao
  • RADIO FREQUENCY SYSTEM WITH TUNABLE NOTCH FILTERS
    Publication number: 20230318646
    Abstract: Aspects of this disclosure relate to a radio frequency system with tunable notch filtering. The radio frequency system includes a first tunable filter and a second tunable filter. The first tunable filter is coupled between an output of a power amplifier and a radio frequency switch. The second tunable filter includes mutually coupled inductors and a tunable impedance circuit electrically connected to at least one of the mutually coupled inductors. The second tunable filter is coupled between an antenna switch and an antenna node. Related methods and wireless communication devices are also disclosed.
    Type: Application
    Filed: June 8, 2023
    Publication date: October 5, 2023
    Inventors: Fei Jia, Joshua Kawika Ellis, Kun Chen, Shayan Farahvash, Haisu Ju, Haibo Cao
  • Radio frequency system with tunable filters including tunable filter with mutually coupled inductors
    Patent number: 11722163
    Abstract: Aspects of this disclosure relate to a radio frequency system with tunable notch filtering. The radio frequency system includes a first tunable filter and a second tunable filter. The first tunable filter is coupled between an output of a power amplifier and a radio frequency switch. The second tunable filter includes mutually coupled inductors and a tunable impedance circuit electrically connected to at least one of the mutually coupled inductors. The second tunable filter is coupled between an antenna switch and an antenna node. Related methods and wireless communication devices are also disclosed.
    Type: Grant
    Filed: August 24, 2021
    Date of Patent: August 8, 2023
    Assignee: Skyworks Solutions, Inc.
    Inventors: Fei Jia, Joshua Kawika Ellis, Kun Chen, Shayan Farahvash, Haisu Ju, Haibo Cao
  • RADIO FREQUENCY SYSTEM WITH TUNABLE FILTERS INCLUDING TUNABLE FILTER WITH MUTUALLY COUPLED INDUCTORS
    Publication number: 20220069854
    Abstract: Aspects of this disclosure relate to a radio frequency system with tunable notch filtering. The radio frequency system includes a first tunable filter and a second tunable filter. The first tunable filter is coupled between an output of a power amplifier and a radio frequency switch. The second tunable filter includes mutually coupled inductors and a tunable impedance circuit electrically connected to at least one of the mutually coupled inductors. The second tunable filter is coupled between an antenna switch and an antenna node. Related methods and wireless communication devices are also disclosed.
    Type: Application
    Filed: August 24, 2021
    Publication date: March 3, 2022
    Inventors: Fei Jia, Joshua Kawika Ellis, Kun Chen, Shayan Farahvash, Haisu Ju, Haibo Cao
  • RADIO FREQUENCY FRONT END WITH TUNABLE FILTERS
    Publication number: 20220069786
    Abstract: Aspects of this disclosure relate to a radio frequency system with tunable notch filtering. The radio frequency system includes a first tunable filter and a second tunable filter. The first tunable filter is coupled between an output of a power amplifier and a radio frequency switch. The second tunable filter is coupled between an antenna switch and an antenna node. The second tunable filter has a notch at a lower frequency than a notch of the first tunable filter. Related methods and wireless communication devices are also disclosed.
    Type: Application
    Filed: August 24, 2021
    Publication date: March 3, 2022
    Inventors: Fei Jia, Joshua Kawika Ellis, Kun Chen, Shayan Farahvash, Haisu Ju, Haibo Cao