Patents by Inventor Ahmed Elmaghraby

Ahmed Elmaghraby 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).

  • Patent number: 10992335
    Abstract: A transceiver for reducing a distortion component within a baseband receive signal is provided. The distortion component is caused by a baseband transmit signal. The transceiver includes a filter configured to filter the baseband transmit signal using a configurable transfer function to generate a modified baseband transmit signal. The configurable transfer function is based on a leakage component in the baseband receive signal, wherein the leakage component is caused by the baseband transmit signal. The transceiver further includes a processing unit configured to generate, based on the modified baseband transmit signal, an envelope signal representing the envelope of the modified baseband transmit signal. Moreover, the transceiver includes a combiner configured to combine the baseband receive signal and a signal related to the envelope signal.
    Type: Grant
    Filed: June 1, 2017
    Date of Patent: April 27, 2021
    Assignee: Apple Inc.
    Inventors: Ahmed Elmaghraby, Ram Kanumalli, Werner Schelmbauer, Stefan Herzinger, Peter Noest
  • Publication number: 20200119763
    Abstract: A transceiver for reducing a distortion component within a baseband receive signal is provided. The distortion component is caused by a baseband transmit signal. The transceiver includes a filter configured to filter the baseband transmit signal using a configurable transfer function to generate a modified baseband transmit signal. The configurable transfer function is based on a leakage component in the baseband receive signal, wherein the leakage component is caused by the baseband transmit signal. The transceiver further includes a processing unit configured to generate, based on the modified baseband transmit signal, an envelope signal representing the envelope of the modified baseband transmit signal. Moreover, the transceiver includes a combiner configured to combine the baseband receive signal and a signal related to the envelope signal.
    Type: Application
    Filed: June 1, 2017
    Publication date: April 16, 2020
    Inventors: Ahmed Elmaghraby, Ram Kanumalli, Werner Schelmbauer, Stefan Herzinger, Peter Noest
  • Patent number: 10587349
    Abstract: A transceiver that implements a frequency domain cancellation of a transmit (Tx)-modulated spur associated with a transceiver is disclosed. The transceiver comprises a baseband receive (Rx) path configured to propagate a receive signal in frequency domain, associated with an Rx signal path of the transceiver, forming a baseband Rx signal, wherein the baseband Rx signal comprises a wanted Rx signal and an unwanted transmit (Tx) modulated spur. The transceiver further comprises a baseband Tx path configured to propagate a Tx signal in frequency domain, associated with the Tx signal path of the transceiver, thereby forming a baseband Tx signal. In addition, the transceiver comprises a cancellation circuit coupled to the baseband Rx path, configured to receive the baseband Rx signal and the baseband Tx signal, and generate a cancellation signal based thereon, in order to cancel the unwanted Tx modulated spur from the baseband Rx signal.
    Type: Grant
    Filed: March 30, 2017
    Date of Patent: March 10, 2020
    Assignee: Apple Inc.
    Inventors: Ram Sunil Kanumalli, Andreas Mayer, Ahmed Elmaghraby, Mario Huemer, Burkhard Neurauter
  • Publication number: 20180287719
    Abstract: A transceiver that implements a frequency domain cancellation of a transmit (Tx)-modulated spur associated with a transceiver is disclosed. The transceiver comprises a baseband receive (Rx) path configured to propagate a receive signal in frequency domain, associated with an Rx signal path of the transceiver, forming a baseband Rx signal, wherein the baseband Rx signal comprises a wanted Rx signal and an unwanted transmit (Tx) modulated spur. The transceiver further comprises a baseband Tx path configured to propagate a Tx signal in frequency domain, associated with the Tx signal path of the transceiver, thereby forming a baseband Tx signal. In addition, the transceiver comprises a cancellation circuit coupled to the baseband Rx path, configured to receive the baseband Rx signal and the baseband Tx signal, and generate a cancellation signal based thereon, in order to cancel the unwanted Tx modulated spur from the baseband Rx signal.
    Type: Application
    Filed: March 30, 2017
    Publication date: October 4, 2018
    Inventors: Ram Sunil Kanumalli, Andreas Mayer, Ahmed Elmaghraby, Mario Huemer, Burkhard Neurauter