Patents by Inventor Prasad Yenigalla

Prasad Yenigalla 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).

  • Combining networks for switchable path power amplifiers
    Patent number: 6472935
    Abstract: The present invention teaches a power amplifier having two or more output power devices and a combining network for switching the output path between these several power devices. The first output power device is designed for power efficient signal amplification at the power amplifier's highest output power level. The second output power device is designed for power efficient signal amplification at the output power level that the power amplifier is most likely to operate. Either the first or second output power device is enabled depending on the output power level. A combining network is used to transform the output impedance, as required, for the proper operation of the enabled power device. By switching between a range of power devices according to the output power level, a high level of power efficiency can be achieved across a broad range of operating states of the power amplifier.
    Type: Grant
    Filed: January 4, 2001
    Date of Patent: October 29, 2002
    Assignee: Maxim Integrated Products, Inc.
    Inventors: Joel R. King, Gordon A. Olsen, Prasad Yenigalla
  • Combining networks for switchable path power amplifiers
    Publication number: 20020021169
    Abstract: The present invention teaches a power amplifier having two or more output power devices and a combining network for switching the output path between these several power devices. The first output power device is designed for power efficient signal amplification at the power amplifier's highest output power level. The second output power device is designed for power efficient signal amplification at the output power level that the power amplifier is most likely to operate. Either the first or second output power device is enabled depending on the output power level. A combining network is used to transform the output impedance, as required, for the proper operation of the enabled power device. By switching between a range of power devices according to the output power level, a high level of power efficiency can be achieved across a broad range of operating states of the power amplifier.
    Type: Application
    Filed: January 4, 2001
    Publication date: February 21, 2002
    Inventors: Joel R. King, Gordon A. Olsen, Prasad Yenigalla