Patents by Inventor Arthur Liraneto Torres Costa

Arthur Liraneto Torres Costa 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).

  • High output current transconductance amplifier
    Patent number: 11522510
    Abstract: A transconductance amplifier (TCA) implemented with high electron mobility transistors (HEMTs) in a push-pull amplifier output stage provides a voltage controlled constant high output current to loads ranging from 10 m? to 1? with a bandwidth of 25 MHz. A driving stage for the HEMTs is implemented with variable gain amplifiers that amplify the input voltage signal and provide bias for the HEMTs. An automatic gain control may be connected between the TCA output and the variable gain amplifiers to ensure a constant current output for a varying load.
    Type: Grant
    Filed: June 2, 2020
    Date of Patent: December 6, 2022
    Assignee: Queen's University at Kingston
    Inventors: Carlos Saavedra, Arthur Liraneto Torres Costa
  • High Output Current Transconductance Amplifier
    Publication number: 20200389138
    Abstract: A transconductance amplifier (TCA) implemented with high electron mobility transistors (HEMTs) in a push-pull amplifier output stage provides a voltage controlled constant high output current to loads ranging from 10 m? to 1? with a bandwidth of 25 MHz. A driving stage for the HEMTs is implemented with variable gain amplifiers that amplify the input voltage signal and provide bias for the HEMTs. An automatic gain control may be connected between the TCA output and the variable gain amplifiers to ensure a constant current output for a varying load.
    Type: Application
    Filed: June 2, 2020
    Publication date: December 10, 2020
    Inventors: Carlos Saavedra, Arthur Liraneto Torres Costa