Patents by Inventor Kostis Vavelidis

Kostis Vavelidis 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: 9768727
    Abstract: An adjustable mixer is disclosed that is capable of operating in different modes in order to satisfy the mixing requirement of multiple radio access technologies (RATs). The adjustable mixer includes a LO signal generating portion and a mixing portion. Depending on the mixing requirements of the RAT, the adjustable mixer can operate in any one of multiple modes, each mode having a specific configuration for the LO signal generating portion and the mixing portion. The LO signal generating portion generates a LO signal having a particular duty cycle, depending on the selected mode, for use by the mixing portion. The mixing portion has an adjustable circuit configuration that can be dynamically reconfigured based on the selected mode, and which allows the mixing portion to successfully mix received signals using the corresponding LO signals generated by the LO signal generating portion.
    Type: Grant
    Filed: July 13, 2015
    Date of Patent: September 19, 2017
    Assignee: Avago Technologies General IP (Singapore) Pte. Ltd
    Inventors: Gerasimos Theodoratos, Konstantinos Vryssas, Hamed Peyravi, Kostis Vavelidis
  • Publication number: 20150318824
    Abstract: An adjustable mixer is disclosed that is capable of operating in different modes in order to satisfy the mixing requirement of multiple radio access technologies (RATs). The adjustable mixer includes a LO signal generating portion and a mixing portion. Depending on the mixing requirements of the RAT, the adjustable mixer can operate in any one of multiple modes, each mode having a specific configuration for the LO signal generating portion and the mixing portion. The LO signal generating portion generates a LO signal having a particular duty cycle, depending on the selected mode, for use by the mixing portion. The mixing portion has an adjustable circuit configuration that can be dynamically reconfigured based on the selected mode, and which allows the mixing portion to successfully mix received signals using the corresponding LO signals generated by the LO signal generating portion.
    Type: Application
    Filed: July 13, 2015
    Publication date: November 5, 2015
    Applicant: Broadcom Corporation
    Inventors: Gerasimos Theodoratos, Konstantinos Vryssas, Hamed Peyravi, Kostis Vavelidis
  • Patent number: 9093956
    Abstract: An adjustable mixer is disclosed that is capable of operating in different modes in order to satisfy the mixing requirement of multiple radio access technologies (RATs). The adjustable mixer includes a LO signal generating portion and a mixing portion. Depending on the mixing requirements of the RAT, the adjustable mixer can operate in any one of multiple modes, each mode having a specific configuration for the LO signal generating portion and the mixing portion. The LO signal generating portion generates a LO signal having a particular duty cycle, depending on the selected mode, for use by the mixing portion. The mixing portion has an adjustable circuit configuration that can be dynamically reconfigured based on the selected mode, and which allows the mixing portion to successfully mix received signals using the corresponding LO signals generated by the LO signal generating portion.
    Type: Grant
    Filed: March 30, 2012
    Date of Patent: July 28, 2015
    Assignee: Broadcom Corporation
    Inventors: Gerasimos Theodoratos, Konstantinos Vryssas, Hamed Peyravi, Kostis Vavelidis
  • Publication number: 20130115907
    Abstract: An adjustable mixer is disclosed that is capable of operating in different modes in order to satisfy the mixing requirement of multiple radio access technologies (RATs). The adjustable mixer includes a LO signal generating portion and a mixing portion. Depending on the mixing requirements of the RAT, the adjustable mixer can operate in any one of multiple modes, each mode having a specific configuration for the LO signal generating portion and the mixing portion. The LO signal generating portion generates a LO signal having a particular duty cycle, depending on the selected mode, for use by the mixing portion. The mixing portion has an adjustable circuit configuration that can be dynamically reconfigured based on the selected mode, and which allows the mixing portion to successfully mix received signals using the corresponding LO signals generated by the LO signal generating portion.
    Type: Application
    Filed: March 30, 2012
    Publication date: May 9, 2013
    Applicant: Broadcom Corporation
    Inventors: Gerasimos THEODORATOS, Konstantinos VRYSSAS, Hamed PEYRAVI, Kostis VAVELIDIS
  • Publication number: 20090116510
    Abstract: A high frequency (HF) communication device includes an antenna structure, an integrated circuit (IC), and an off-chip duplexer. The IC includes a receiver section and a transmitter section. The receiver section is operable in a receive portion of a first frequency band to support multiple communication protocols and converts a filtered inbound HF signal into a down converted inbound signal in accordance with the multiple communication protocols. The transmitter section is operable in a transmit portion of the first frequency band to support the multiple communication protocols, converts an outbound signal into a first up converted signal when a first one of the multiple communication protocols is active, and converts the outbound signal into a second up converted signal when a second one of the multiple communication protocols is active.
    Type: Application
    Filed: November 2, 2007
    Publication date: May 7, 2009
    Applicant: BROADCOM CORPORATION
    Inventors: Theodoros Georgantas, Kostis Vavelidis, Sofoklis Plevridis, Ilias Bouras
  • Publication number: 20090117938
    Abstract: An integrated circuit (IC) includes a receiver module, a transmitter module, an inbound digital module, and a local oscillation generation module. The receiver module is operable to convert an inbound high frequency signal into a down converted inbound signal based on a receive local oscillation independently of a protocol of the inbound high frequency signal. The inbound digital module is coupled to compensate the down converted inbound signal in accordance with a selected one of the first plurality of wireless communication protocols. The transmitter module is operable to convert a first outbound signal into a first up converted signal based on a transmit local oscillation when a first one of the first plurality of wireless communication protocols is active and to convert a second outbound signal into a second up converted signal based on the transmit local oscillation when a second one of the first plurality of wireless communication protocols is active.
    Type: Application
    Filed: November 2, 2007
    Publication date: May 7, 2009
    Applicant: BROADCOM CORPORATION
    Inventors: Theodoros Georgantas, Kostis Vavelidis, Sofoklis Plevridis, Babis (Charalampos) Kapnistis, Spyridon Kavadias