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).
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Patent number: 9634716Abstract: 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: GrantFiled: March 5, 2015Date of Patent: April 25, 2017Assignee: Avago Technologies General IP (Singapore) Pte. LtdInventors: Nikolaos C. Haralabidis, Theodoros Georgantas
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Publication number: 20150188598Abstract: 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: ApplicationFiled: March 5, 2015Publication date: July 2, 2015Applicant: BROADCOM CORPORATIONInventors: Nikolaos C. Haralabidis, Theodoros Georgantas
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Patent number: 8989808Abstract: 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: GrantFiled: May 26, 2013Date of Patent: March 24, 2015Assignee: Broadcom CorporationInventors: Nikolaos C. Haralabidis, Theodoros Georgantas
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Publication number: 20130252664Abstract: 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: ApplicationFiled: May 26, 2013Publication date: September 26, 2013Applicant: BROADCOM CORPORATIONInventors: Nikolaos C. Haralabidis, Theodoros Georgantas
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Patent number: 8452241Abstract: 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: GrantFiled: May 12, 2008Date of Patent: May 28, 2013Assignee: Broadcom CorporationInventors: Nikolaos C. Haralabidis, Theodoros Georgantas
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Patent number: 8009786Abstract: 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: GrantFiled: February 26, 2008Date of Patent: August 30, 2011Assignee: Broadcom CorporationInventors: Nikolaos C. Haralabidis, Theodoros Georgantas
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Patent number: 7924944Abstract: 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: GrantFiled: March 21, 2006Date of Patent: April 12, 2011Assignee: Broadcom CorporationInventors: 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
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Publication number: 20100173598Abstract: 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: ApplicationFiled: March 15, 2010Publication date: July 8, 2010Inventors: Spyridon C. Kavadias, Konstantinos D. Vavelidis, Nikolaos C. Haralabidis
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Patent number: 7680227Abstract: 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: GrantFiled: May 11, 2006Date of Patent: March 16, 2010Assignee: Broadcom CorporationInventors: Spyridon C. Kavadias, Konstantinos D. Vavelidis, Nikolaos C. Haralabidis
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Publication number: 20090253382Abstract: 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: ApplicationFiled: May 12, 2008Publication date: October 8, 2009Applicant: BROADCOM CORPORATIONInventors: NIKOLAOS C. HARALABIDIS, THEODOROS GEORGANTAS
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Publication number: 20090213974Abstract: 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: ApplicationFiled: February 26, 2008Publication date: August 27, 2009Applicant: BROADCOM CORPORATIONInventors: Nikolaos C. Haralabidis, Theodoros Georgantas
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Patent number: 7570124Abstract: 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: GrantFiled: January 3, 2008Date of Patent: August 4, 2009Assignee: Broadcom CorporationInventors: Nikolaos C. Haralabidis, Nikolaos A. Kanakaris
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Publication number: 20090174486Abstract: 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: ApplicationFiled: January 3, 2008Publication date: July 9, 2009Applicant: BROADCOM CORPORATIONInventors: Nikolaos C. Haralabidis, Nikolaos A. Kanakaris
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Publication number: 20090128992Abstract: 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: ApplicationFiled: November 19, 2007Publication date: May 21, 2009Applicant: Broadcom CorporationInventors: Nikolaos C. Haralabidis, Ioannis G. Kokolakis