Patents by Inventor Ibrahim Chamas

Ibrahim Chamas 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).

  • Communication circuit including a transmitter
    Patent number: 10454509
    Abstract: A communication circuit may include a first pair of digital-to-analog converters (DACs) coupled to an input of a first mixer and configured to generate first baseband signals. The communication circuit may further include a second pair of DACs coupled to an input of a second mixer and configured to generate second baseband signals. The second baseband signals may be shifted in phase relative to the first baseband signals.
    Type: Grant
    Filed: April 25, 2018
    Date of Patent: October 22, 2019
    Assignee: QUALCOMM Incorporated
    Inventors: Bhushan Shanti Asuri, Krishnaswamy Thiagarajan, Ashok Swaminathan, Shahin Mehdizad Taleie, Yen-Wei Chang, Vinod Panikkath, Sameer Vasantlal Vora, Ayush Mittal, Tonmoy Biswas, Sy-Chyuan Hwu, Zhilong Tang, Ibrahim Chamas, Ping Wing Lai, Behnam Sedighi, Dongwon Seo, Nitz Saputra
  • COMMUNICATION CIRCUIT INCLUDING A TRANSMITTER
    Publication number: 20190288722
    Abstract: A communication circuit may include a first pair of digital-to-analog converters (DACs) coupled to an input of a first mixer and configured to generate first baseband signals. The communication circuit may further include a second pair of DACs coupled to an input of a second mixer and configured to generate second baseband signals. The second baseband signals may be shifted in phase relative to the first baseband signals.
    Type: Application
    Filed: April 25, 2018
    Publication date: September 19, 2019
    Inventors: Bhushan Shanti ASURI, Krishnaswamy THIAGARAJAN, Ashok SWAMINATHAN, Shahin MEHDIZAD TALEIE, Yen-Wei CHANG, Vinod PANIKKATH, Sameer Vasantlal VORA, Ayush MITTAL, Tonmoy BISWAS, Sy-Chyuan HWU, Zhilong TANG, Ibrahim CHAMAS, Ping Wing LAI, Behnam SEDIGHI, Dongwon SEO, Nitz SAPUTRA
  • Amplifier Configuration for Load-Line Enhancement
    Publication number: 20190097583
    Abstract: Amplifier configuration for load-line enhancement is described herein. In some implementations, an apparatus includes an amplifier. The amplifier includes at least one plus transistor stack, at least one minus transistor stack, and at least one inductor. The at least one plus transistor stack is coupled to a plus amplifier node and a plus input node. The at least one minus transistor stack is coupled to a minus amplifier node and a minus input node. The at least one inductor is coupled between the plus amplifier node and the minus amplifier node, with the at least one inductor including an inter-inductor node. The amplifier also includes a minus power switch coupled between the minus amplifier node and one or more supply voltages and an inductor power switch coupled between the inter-inductor node and at least one supply voltage.
    Type: Application
    Filed: September 21, 2018
    Publication date: March 28, 2019
    Inventor: Ibrahim Chamas
  • BASEBAND FILTERS AND INTERFACES BETWEEN A DIGITAL-TO-ANALOG CONVERTER AND A BASEBAND FILTER
    Publication number: 20170141760
    Abstract: Exemplary embodiments of the present disclosure are related to baseband filters. A device may include a digital-to-analog converter (DAC) configured to output a DC current. The device may also include an operational amplifier coupled to an output of the DAC and configured to bias an input stage of the operational amplifier with the DC current.
    Type: Application
    Filed: November 13, 2015
    Publication date: May 18, 2017
    Inventor: Ibrahim Chamas
  • Baseband filters and interfaces between a digital-to-analog converter and a baseband filter
    Patent number: 9647639
    Abstract: Exemplary embodiments of the present disclosure are related to baseband filters. A device may include a digital-to-analog converter (DAC) configured to output a DC current. The device may also include an operational amplifier coupled to an output of the DAC and configured to bias an input stage of the operational amplifier with the DC current.
    Type: Grant
    Filed: November 13, 2015
    Date of Patent: May 9, 2017
    Assignee: Qualcomm Incorporated
    Inventor: Ibrahim Chamas