Patents by Inventor Nikolaos C. Haralabidis

Nikolaos C. Haralabidis 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: 9634716
    Abstract: Enhanced granularity operational parameters adjustment of components and modules in a multi-band, multi-standard communication device. For supporting two-way communications, a communication device includes receiver and transmitter modules. Each module includes various components that are configurable and/or programmable based on a protocol and band pair by which the communication device is operating. The communication device is a multi-protocol and multi-band capable communication device capable to operate in accordance with any one protocol and band at a first time and another protocol and band at a second time. The various components within each of the receiver and transmitter modules can be adjusted using one or more operational parameters. In some instances, a given component can be controlled by more than one operational parameter. Alternatively, certain components are controlled only one operational parameter.
    Type: Grant
    Filed: March 5, 2015
    Date of Patent: April 25, 2017
    Assignee: Avago Technologies General IP (Singapore) Pte. Ltd
    Inventors: Nikolaos C. Haralabidis, Theodoros Georgantas
  • Publication number: 20150188598
    Abstract: Enhanced granularity operational parameters adjustment of components and modules in a multi-band, multi-standard communication device. For supporting two-way communications, a communication device includes receiver and transmitter modules. Each module includes various components that are configurable and/or programmable based on a protocol and band pair by which the communication device is operating. The communication device is a multi-protocol and multi-band capable communication device capable to operate in accordance with any one protocol and band at a first time and another protocol and band at a second time. The various components within each of the receiver and transmitter modules can be adjusted using one or more operational parameters. In some instances, a given component can be controlled by more than one operational parameter. Alternatively, certain components are controlled only one operational parameter.
    Type: Application
    Filed: March 5, 2015
    Publication date: July 2, 2015
    Applicant: BROADCOM CORPORATION
    Inventors: Nikolaos C. Haralabidis, Theodoros Georgantas
  • Patent number: 8989808
    Abstract: Enhanced granularity operational parameters adjustment of components and modules in a multi-band, multi-standard communication device. For supporting two-way communications, a communication device includes receiver and transmitter modules. Each module includes various components that are configurable and/or programmable based on a protocol and band pair by which the communication device is operating. The communication device is a multi-protocol and multi-band capable communication device capable to operate in accordance with any one protocol and band at a first time and another protocol and band at a second time. The various components within each of the receiver and transmitter modules can be adjusted using one or more operational parameters. In some instances, a given component can be controlled by more than one operational parameter. Alternatively, certain components are controlled only one operational parameter.
    Type: Grant
    Filed: May 26, 2013
    Date of Patent: March 24, 2015
    Assignee: Broadcom Corporation
    Inventors: Nikolaos C. Haralabidis, Theodoros Georgantas
  • Publication number: 20130252664
    Abstract: Enhanced granularity operational parameters adjustment of components and modules in a multi-band, multi-standard communication device. For supporting two-way communications, a communication device includes receiver and transmitter modules. Each module includes various components that are configurable and/or programmable based on a protocol and band pair by which the communication device is operating. The communication device is a multi-protocol and multi-band capable communication device capable to operate in accordance with any one protocol and band at a first time and another protocol and band at a second time. The various components within each of the receiver and transmitter modules can be adjusted using one or more operational parameters. In some instances, a given component can be controlled by more than one operational parameter. Alternatively, certain components are controlled only one operational parameter.
    Type: Application
    Filed: May 26, 2013
    Publication date: September 26, 2013
    Applicant: BROADCOM CORPORATION
    Inventors: Nikolaos C. Haralabidis, Theodoros Georgantas
  • Patent number: 8452241
    Abstract: Enhanced granularity operational parameters adjustment of components and modules in a multi-band, multi-standard communication device. For supporting two-way communications, a communication device includes receiver and transmitter modules. Each module includes various components that are configurable and/or programmable based on a protocol and band pair by which the communication device is operating. The communication device is a multi-protocol and multi-band capable communication device capable to operate in accordance with any one protocol and band at a first time and another protocol and band at a second time. The various components within each of the receiver and transmitter modules can be adjusted using one or more operational parameters. In some instances, a given component can be controlled by more than one operational parameter. Alternatively, certain components are controlled only one operational parameter.
    Type: Grant
    Filed: May 12, 2008
    Date of Patent: May 28, 2013
    Assignee: Broadcom Corporation
    Inventors: Nikolaos C. Haralabidis, Theodoros Georgantas
  • Patent number: 8009786
    Abstract: A technique for agile region and band conscious frequency planning for wireless transceivers in which a comparison frequency is selected for generating a local oscillator signal. The comparison frequency (Fcomp) is selected for a frequency band of a particular communication standard or protocol, in order not to introduce harmonic components of the selected comparison frequency in a transmitted signal from the wireless device that generates spurious emissions restricted by the particular communication protocol or another protocol. The Fcomp selection may also take into consideration restrictive region-specific criteria for out-of band spurious emissions.
    Type: Grant
    Filed: February 26, 2008
    Date of Patent: August 30, 2011
    Assignee: Broadcom Corporation
    Inventors: Nikolaos C. Haralabidis, Theodoros Georgantas
  • Patent number: 7924944
    Abstract: Aspects of a method and system for a multi-band direct conversion complementary metal-oxide-semiconductor (CMOS) mobile television tuner are provided. A single-chip multi-band radio frequency (RF) receiver in a mobile terminal comprising UHF and L-band front-ends receives and amplifies an RF signal utilizing a low noise amplifier (LNA) an LNA integrated into the front-end that corresponds to the type of signal received. A received signal strength indicator (RSSI) value may be determined for the amplified signal within the receiver and may be utilized to adjust a gain of the LNA. The adjustment may be made via on-chip or off-chip processing of the RSSI value. The receiver may directly convert the amplified signal to a baseband frequency signal and generate in-phase and quadrature components. The components of the baseband frequency signal may be filtered and/or amplified via programmable devices within the receiver. Circuitry within the receiver may be controller via an on-chip digital interface.
    Type: Grant
    Filed: March 21, 2006
    Date of Patent: April 12, 2011
    Assignee: Broadcom Corporation
    Inventors: Iason F. Vassiliou, Konstantinos D. Vavelidis, Stamatios A. Bouras, Spyridon C. Kavadias, Ioannis G. Kokolakis, Georgios S. Kamoulakos, Aristeidis I. Kyranas, Charalampos P. Kapnistis, Nikolaos C. Haralabidis
  • Publication number: 20100173598
    Abstract: A method and system for filter calibration using fractional-N frequency synthesized signals are presented. Aspects of the method may include generating an LO signal by a PLL circuit within a chip. A reference signal may be generated based on the generated LO signal and a synthesizer control signal. A frequency response for a filter circuit integrated within the chip may be calibrated by adjusting parameters associated with the filter circuit based on the generated LO signal. Aspects of the system may include a single-chip multi-band RF receiver that enables generation of a LO signal by a PLL circuit within the single-chip, and enables calibration of a frequency response for a filter circuit integrated within the chip. A reference signal may be generated based on the generated LO signal and a synthesizer control signal. The frequency response may be calibrated by adjusting the filter based on the generated reference signal.
    Type: Application
    Filed: March 15, 2010
    Publication date: July 8, 2010
    Inventors: Spyridon C. Kavadias, Konstantinos D. Vavelidis, Nikolaos C. Haralabidis
  • Patent number: 7680227
    Abstract: A method and system for filter calibration using fractional-N frequency synthesized signals are presented. The method may include generating an Local Oscillator (LO) signal by a Phase Locked Loop (PLL) circuit within a chip. A reference signal may be generated based on the generated LO signal and a synthesizer control signal. A frequency response for a filter circuit integrated within the chip may be calibrated by adjusting parameters associated with the filter circuit based on the generated LO signal. The system may include a single-chip multi-band RF receiver that enables generation of a LO signal by a PLL circuit within the single-chip, and enables calibration of a frequency response for a filter circuit integrated within the chip. A reference signal may be generated based on the generated LO signal and a synthesizer control signal. The frequency response may be calibrated by adjusting the filter based on the generated reference signal.
    Type: Grant
    Filed: May 11, 2006
    Date of Patent: March 16, 2010
    Assignee: Broadcom Corporation
    Inventors: Spyridon C. Kavadias, Konstantinos D. Vavelidis, Nikolaos C. Haralabidis
  • Publication number: 20090253382
    Abstract: Enhanced granularity operational parameters adjustment of components and modules in a multi-band, multi-standard communication device. For supporting two-way communications, a communication device includes receiver and transmitter modules. Each module includes various components that are configurable and/or programmable based on a protocol and band pair by which the communication device is operating. The communication device is a multi-protocol and multi-band capable communication device capable to operate in accordance with any one protocol and band at a first time and another protocol and band at a second time. The various components within each of the receiver and transmitter modules can be adjusted using one or more operational parameters. In some instances, a given component can be controlled by more than one operational parameter. Alternatively, certain components are controlled only one operational parameter.
    Type: Application
    Filed: May 12, 2008
    Publication date: October 8, 2009
    Applicant: BROADCOM CORPORATION
    Inventors: NIKOLAOS C. HARALABIDIS, THEODOROS GEORGANTAS
  • Publication number: 20090213974
    Abstract: A technique for agile region and band conscious frequency planning for wireless transceivers in which a comparison frequency is selected for generating a local oscillator signal. The comparison frequency (Fcomp) is selected for a frequency band of a particular communication standard or protocol, in order not to introduce harmonic components of the selected comparison frequency in a transmitted signal from the wireless device that generates spurious emissions restricted by the particular communication protocol or another protocol. The Fcomp selection may also take into consideration restrictive region-specific criteria for out-of band spurious emissions.
    Type: Application
    Filed: February 26, 2008
    Publication date: August 27, 2009
    Applicant: BROADCOM CORPORATION
    Inventors: Nikolaos C. Haralabidis, Theodoros Georgantas
  • Patent number: 7570124
    Abstract: A plurality of inverters are arranged serially to form a ring oscillator and coupled to receive a reference clock signal. The reference clock signal is used to switch the inverters on and off so that not all of the inverters are on at a same time. The ring oscillator circuit is used as a divider circuit to divide the frequency of the reference clock signal to produce a local oscillator signal at a second frequency.
    Type: Grant
    Filed: January 3, 2008
    Date of Patent: August 4, 2009
    Assignee: Broadcom Corporation
    Inventors: Nikolaos C. Haralabidis, Nikolaos A. Kanakaris
  • Publication number: 20090174486
    Abstract: A plurality of inverters are arranged serially to form a ring oscillator and coupled to receive a reference clock signal. The reference clock signal is used to switch the inverters on and off so that not all of the inverters are on at a same time. The ring oscillator circuit is used as a divider circuit to divide the frequency of the reference clock signal to produce a local oscillator signal at a second frequency.
    Type: Application
    Filed: January 3, 2008
    Publication date: July 9, 2009
    Applicant: BROADCOM CORPORATION
    Inventors: Nikolaos C. Haralabidis, Nikolaos A. Kanakaris
  • Publication number: 20090128992
    Abstract: A highly linearized capacitor structure is formed by a first capacitor, that is coupled between a first terminal and a common node, combine with a second capacitor, that is coupled between a second terminal and the common node. When a bias voltage is applied, the capacitance values of the first and second capacitors combine and a capacitance variation of the first capacitor is compensated by a capacitance variation of the second capacitor to reduce and linearize overall capacitance variation in the combined capacitor structure.
    Type: Application
    Filed: November 19, 2007
    Publication date: May 21, 2009
    Applicant: Broadcom Corporation
    Inventors: Nikolaos C. Haralabidis, Ioannis G. Kokolakis