Patents by Inventor Ali Asghar Talebi

Ali Asghar Talebi 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-frequency drain power supply to decrease power dissipation in class-AB power amplifiers
    Patent number: 9490754
    Abstract: The present invention relates to the control of power amplifiers in order to enhance the efficiency of the amplifier by tracking the envelope of input signal and applying the same envelope into the drain voltage of a last stage power transistor. This invention can be used in each and every wireless communication transmitter, since there is definitely a power amplifier in the last part of the transmitter before the antenna, and every power amplifier has limited power performance, depending on type of modulation, due to its input-output curve. We are aiming to enhance the power utility of power amplifiers in different applications through introducing a new method and circuit for supplying power into a power amplifier, wherein the power supplied to the drain of the power amplifier is made to follow the envelope of the transmitted RF signal.
    Type: Grant
    Filed: September 10, 2013
    Date of Patent: November 8, 2016
    Assignee: INNOVARADIO SA
    Inventors: Amir Hooshang Farahani Samani, Alexander Greber, Jeyran Hezaveh, Ali Asghar Talebi
  • HIGH-FREQUENCY DRAIN POWER SUPPLY TO DECREASE POWER DISSIPATION IN CLASS-AB POWER AMPLIFIERS
    Publication number: 20150249432
    Abstract: The present invention relates to the control of power amplifiers in order to enhance the efficiency of the amplifier by tracking the envelope of input signal and applying the same envelope into the drain voltage of a last stage power transistor. This invention can be used in each and every wireless communication transmitter, since there is definitely a power amplifier in the last part of the transmitter before the antenna, and every power amplifier has limited power performance, depending on type of modulation, due to its input-output curve. We are aiming to enhance the power utility of power amplifiers in different applications through introducing a new method and circuit for supplying power into a power amplifier, wherein the power supplied to the drain of the power amplifier is made to follow the envelope of the transmitted RF signal.
    Type: Application
    Filed: September 10, 2013
    Publication date: September 3, 2015
    Inventors: Amir Hooshang Farahani Samani, Alexander Greber, Jeyran Hezaveh, Ali Asghar Talebi