Patents by Inventor Ahmed Mohamed Mahmoud MOHAMED

Ahmed Mohamed Mahmoud MOHAMED 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).

  • Efficient power amplification over large operating average power range
    Patent number: 9768734
    Abstract: Embodiments of a Doherty power amplifier that maintain efficiency over a large operating average power range are disclosed. In one embodiment, the Doherty power amplifier includes reconfigurable main and auxiliary output matching networks and a fixed combining network. The reconfigurable main and auxiliary output matching networks can be reconfigured such that together the reconfigurable main output matching network, the reconfigurable auxiliary output matching network, and the fixed combining network provide proper load modulation for multiple different back-off power levels. As a result, the Doherty power amplifier maintains high efficiency over an extended back-off power level range.
    Type: Grant
    Filed: October 5, 2015
    Date of Patent: September 19, 2017
    Assignee: Telefonaktiebolaget L M Ericsson (publ)
    Inventors: Ahmed Mohamed Mahmoud Mohamed, Slim Boumaiza, Edward Sich
  • EFFICIENT POWER AMPLIFICATION OVER LARGE OPERATING AVERAGE POWER RANGE
    Publication number: 20160028352
    Abstract: Embodiments of a Doherty power amplifier that maintain efficiency over a large operating average power range are disclosed. In one embodiment, the Doherty power amplifier includes reconfigurable main and auxiliary output matching networks and a fixed combining network. The reconfigurable main and auxiliary output matching networks can be reconfigured such that together the reconfigurable main output matching network, the reconfigurable auxiliary output matching network, and the fixed combining network provide proper load modulation for multiple different back-off power levels. As a result, the Doherty power amplifier maintains high efficiency over an extended back-off power level range.
    Type: Application
    Filed: October 5, 2015
    Publication date: January 28, 2016
    Inventors: Ahmed Mohamed Mahmoud Mohamed, Slim Boumaiza, Edward Sich
  • Efficient power amplification over large operating average power range
    Patent number: 9154094
    Abstract: Embodiments of a Doherty power amplifier that maintain efficiency over a large operating average power range are disclosed. In one embodiment, the Doherty power amplifier includes reconfigurable main and auxiliary output matching networks and a fixed combining network. The reconfigurable main and auxiliary output matching networks can be reconfigured such that together the reconfigurable main output matching network, the reconfigurable auxiliary output matching network, and the fixed combining network provide proper load modulation for multiple different back-off power levels. As a result, the Doherty power amplifier maintains high efficiency over an extended back-off power level range.
    Type: Grant
    Filed: October 11, 2013
    Date of Patent: October 6, 2015
    Assignee: Telefonaktiebolaget L M Ericsson (publ)
    Inventors: Ahmed Mohamed Mahmoud Mohamed, Slim Boumaiza, Edward Sich
  • Multi-frequency multi-standard reconfigurable doherty amplifier
    Patent number: 8981850
    Abstract: A method and system for designing and implementing a reconfigurable Doherty amplifier system are disclosed. In one embodiment, a design method includes determining, using a processor, a first set of ABCD transmission parameters of a first output compensation network in a main path of a Doherty amplifier for the case where an auxiliary amplifier of the Doherty amplifier is off. The method further includes determining, using a processor, a second set of ABCD transmission parameters of a second output compensation network in an auxiliary path of the Doherty amplifier based on the first set of ABCD transmission parameters.
    Type: Grant
    Filed: January 25, 2013
    Date of Patent: March 17, 2015
    Assignee: Telefonaktiebolaget L M Ericsson (publ)
    Inventors: Slim Boumaiza, Ahmed Mohamed Mahmoud Mohamed
  • EFFICIENT POWER AMPLIFICATION OVER LARGE OPERATING AVERAGE POWER RANGE
    Publication number: 20140347125
    Abstract: Embodiments of a Doherty power amplifier that maintain efficiency over a large operating average power range are disclosed. In one embodiment, the Doherty power amplifier includes reconfigurable main and auxiliary output matching networks and a fixed combining network. The reconfigurable main and auxiliary output matching networks can be reconfigured such that together the reconfigurable main output matching network, the reconfigurable auxiliary output matching network, and the fixed combining network provide proper load modulation for multiple different back-off power levels. As a result, the Doherty power amplifier maintains high efficiency over an extended back-off power level range.
    Type: Application
    Filed: October 11, 2013
    Publication date: November 27, 2014
    Applicant: Telefonaktiebolaget L M Ericsson (publ)
    Inventors: Ahmed Mohamed Mahmoud Mohamed, Slim Boumaiza, Edward Sich
  • MULTI-FREQUENCY MULTI-STANDARD RECONFIGURABLE DOHERTY AMPLIFIER
    Publication number: 20140035681
    Abstract: A method and system for designing and implementing a reconfigurable Doherty amplifier system are disclosed. In one embodiment, a design method includes determining, using a processor, a first set of ABCD transmission parameters of a first output compensation network in a main path of a Doherty amplifier for the case where an auxiliary amplifier of the Doherty amplifier is off. The method further includes determining, using a processor, a second set of ABCD transmission parameters of a second output compensation network in an auxiliary path of the Doherty amplifier based on the first set of ABCD transmission parameters.
    Type: Application
    Filed: January 25, 2013
    Publication date: February 6, 2014
    Applicant: Telefonaktiebolaget L M Ericsson (publ)
    Inventors: Slim BOUMAIZA, Ahmed Mohamed Mahmoud MOHAMED