Patents by Inventor Pedro RITO

Pedro RITO 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).

  • Gain-control stage for a variable gain amplifier
    Patent number: 11183979
    Abstract: The invention relates to a gain-control stage (100) for generating gain-control signals (Vc+, Vc?) for controlling an external variable-gain amplifying unit (101). The gain-control stage comprises a first (102) and a second differential amplifier unit (112) that receive, at a respective input interface (104,114) a reference voltage signal (VRef) and a variable gain-control voltage signal (VGC). The second differential amplifier unit is configured to provide, via a second output interface (120), a control voltage signal (V1) to a controllable first current source (106) of the first differential amplifier unit (102). The first differential amplifier unit (102) is configured to provide, via a first output interface (110), the first and the second gain-control signal (VC+, VC?) in dependence on the variable gain-control voltage signal (VGC), the reference voltage signal (VRef) and a first biasing current (IB1) that depends on the control voltage signal.
    Type: Grant
    Filed: December 18, 2019
    Date of Patent: November 23, 2021
    Assignee: IHP GMBH—INNOVATIONS FOR HIGH PERFORMANCE MICROELECTRONICS/LEIBNIZ-INSTITUT FÜR INNOVATIVE MIKROELEKTRONIK
    Inventors: Pedro Rito, Iria Garcia Lopez, Minsu Ko, Dietmar Kissinger
  • Gain-control Stage for a Variable Gain Amplifier
    Publication number: 20200204127
    Abstract: The invention relates to a gain-control stage (100) for generating gain-control signals (Vc+, Vc?) for controlling an external variable-gain amplifying unit (101). The gain-control stage comprises a first (102) and a second differential amplifier unit (112) that receive, at a respective input interface (104,114) a reference voltage signal (VRef) and a variable gain-control voltage signal (VGC). The second differential amplifier unit is configured to provide, via a second output interface (120), a control voltage signal (V1) to a controllable first current source (106) of the first differential amplifier unit (102). The first differential amplifier unit (102) is configured to provide, via a first output interface (110), the first and the second gain-control signal (VC+, VC?) in dependence on the variable gain-control voltage signal (VGC), the reference voltage signal (VRef) and a first biasing current (IB1) that depends on the control voltage signal.
    Type: Application
    Filed: December 18, 2019
    Publication date: June 25, 2020
    Inventors: Pedro RITO, Iria Garcia LOPEZ, Minsu KO, Dietmar KISSINGER