Patents by Inventor Theodoros Georgantas
Theodoros Georgantas 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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Patent number: 8843094Abstract: Aspects of a method and system for integrated blocker detection and automatic gain control are provided. In this regard, a communication device may generate one or more first signal strength indications based on a strength of a received signal at a first point in the analog front-end of the communication device. The communication device may generate one or more second signal strength indications based on a strength of the received signal at a second point in a digital processing module of the communication device. The first point in the analog front-end may be an input or an output of a down-conversion mixer. The second point in the digital processing module may be an output of an analog-to-digital converter or an output of a channel selection filter. The communication device may control, utilizing the first signal strength indication(s) and the second signal strength indication(s), a gain of one or more components of the communication device.Type: GrantFiled: August 9, 2010Date of Patent: September 23, 2014Assignee: Broadcom CorporationInventors: Walid Ahmed, John Leung, Theodoros Georgantas, Morten Damgaard, Nelson Sollenberger
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Patent number: 8749318Abstract: Enhanced polar modulator for transmitter. Within a phase locked loop (PLL), two point modulation topology is employed in which phase information passes through a limiter (e.g., a ±90° or ±?/2), the phase information dynamic range is divided by a factor (e.g., by 2), and a maximum frequency deviation is also divided by a factor (e.g., by 2). Then, a double balanced up-converter mixer/modulator performs gain adjustment (e.g., magnitude and/or amplitude adjustment) and phase changes of 0° and +180° or 0 and +? (e.g., negative gains values may be employed). Phase adjustment in such an architecture is split and provided to both the PLL and to the mixer/modulator of such a polar modulator within a transmitter module such as may be implemented within a communication device (e.g., which may be a wireless communication device). This architecture that includes a PLL with a double balanced up-converter mixer/modulator suppresses even harmonics.Type: GrantFiled: March 5, 2012Date of Patent: June 10, 2014Assignee: Broadcom CorporationInventors: Sofoklis Plevridis, Theodoros Georgantas, Konstantinos D. Vavelidis
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Patent number: 8620228Abstract: Wideband-Code Division Multiple Access (W-CDMA) transmit architecture. A baseband digital processing module operates cooperatively with an analog signal processing module to effectuate highly adjustable and highly accurate gain adjustment in accordance with transmitter processing within a communication device. The gain adjustment and/or gain control is partitioned between the digital and analog domains by employing two cooperatively operating digital and analog modules, respectively. Gain adjustment in the analog domain is performed in a relatively more coarse fashion that in the digital domain. If desired, gain adjustment in each of the analog and digital domains is performed across a range of discrete steps. The discrete steps in the analog domain are larger than the discrete steps in the digital domain. Also, the discrete steps in the digital domain may be interposed between two successive discrete steps in the analog domain.Type: GrantFiled: April 30, 2012Date of Patent: December 31, 2013Assignee: Broadcom CorporationInventors: Theodoros Georgantas, Konstantinos D. Vavelidis, Sofoklis Plevridis, Babis (Charalampos) Kapnistis, Spyridon Kavadias
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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: 8280315Abstract: An RF integrated circuit (IC) includes a first IC port for coupling a first transmit signal in a first frequency band to at least one external device and a second IC port for coupling a second transmit signal in a second frequency band to the at least one external device. A transmitter module responds to outbound data to generate the first transmit signal in a first mode of operation and to generate the second transmit signal in a second mode of operation, wherein the transmitter module generates the first transmit signal and the second transmit signal in a selected one of a plurality of wireless telephony formats based on a control signal, and wherein the plurality of wireless telephony formats includes a UMTS format and at least one non-UMTS format.Type: GrantFiled: October 14, 2011Date of Patent: October 2, 2012Assignee: Broadcom CorporationInventors: Theodoros Georgantas, Konstantinos D. Vavelidis, Sofoklis Plevridis, Ilias Bouras
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Publication number: 20120220244Abstract: Wideband-Code Division Multiple Access (W-CDMA) transmit architecture. A baseband digital processing module operates cooperatively with an analog signal processing module to effectuate highly adjustable and highly accurate gain adjustment in accordance with transmitter processing within a communication device. The gain adjustment and/or gain control is partitioned between the digital and analog domains by employing two cooperatively operating digital and analog modules, respectively. Gain adjustment in the analog domain is performed in a relatively more coarse fashion that in the digital domain. If desired, gain adjustment in each of the analog and digital domains is performed across a range of discrete steps. The discrete steps in the analog domain are larger than the discrete steps in the digital domain. Also, the discrete steps in the digital domain may be interposed between two successive discrete steps in the analog domain.Type: ApplicationFiled: April 30, 2012Publication date: August 30, 2012Applicant: BROADCOM CORPORATIONInventors: Theodoros Georgantas, Konstantinos D. Vavelidis, Sofoklis Plevridis, Babis (Charalampos) Kapnistis, Spyridon Kavadias
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Publication number: 20120161892Abstract: Enhanced polar modulator for transmitter. Within a phase locked loop (PLL), two point modulation topology is employed in which phase information passes through a limiter (e.g., a ±90° or ±?/2), the phase information dynamic range is divided by a factor (e.g., by 2), and a maximum frequency deviation is also divided by a factor (e.g., by 2). Then, a double balanced up-converter mixer/modulator performs gain adjustment (e.g., magnitude and/or amplitude adjustment) and phase changes of 0° and +180° or 0 and +? (e.g., negative gains values may be employed). Phase adjustment in such an architecture is split and provided to both the PLL and to the mixer/modulator of such a polar modulator within a transmitter module such as may be implemented within a communication device (e.g., which may be a wireless communication device). This architecture that includes a PLL with a double balanced up-converter mixer/modulator suppresses even harmonics.Type: ApplicationFiled: March 5, 2012Publication date: June 28, 2012Applicant: BROADCOM CORPORATIONInventors: Sofoklis Plevridis, Theodoros Georgantas, Konstantinos D. Vavelidis
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Patent number: 8170501Abstract: A baseband digital processing module operates cooperatively with an analog signal processing module to effectuate highly adjustable and highly accurate gain adjustment in accordance with transmitter processing within a communication device. The gain adjustment and/or gain control is partitioned between the digital and analog domains by employing two cooperatively operating digital and analog modules, respectively. Gain adjustment in the analog domain is performed in a relatively more coarse fashion that in the digital domain. If desired, gain adjustment in each of the analog and digital domains is performed across a range of discrete steps. The discrete steps in the analog domain are larger than the discrete steps in the digital domain. Also, the discrete steps in the digital domain may be interposed between two successive discrete steps in the analog domain.Type: GrantFiled: April 28, 2011Date of Patent: May 1, 2012Assignee: Broadcom CorporationInventors: Theodoros Georgantas, Konstantinos D. Vavelidis, Sofoklis Plevridis, Babis (Charalampos) Kapnistis, Spyridon Kavadias
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Patent number: 8143965Abstract: Enhanced polar modulator for transmitter. Within a phase locked loop (PLL), a two point modulation topology is employed in which phase information passes through a limiter (e.g., a ±90° or ±?/2) in which the phase information dynamic range is divide by a factor (e.g., by 2) and a maximum frequency deviation is also divided by a factor (e.g., by 2). Then, a double balanced up-converter mixer/modulator is implemented to perform gain adjustment (e.g., magnitude and/or amplitude adjustment) and phase changes of 0° and +180° or 0 and +? (e.g., negative gains values may be employed). Phase adjustment in such an architecture is split and provided to both the PLL and to the mixer/modulator of such a polar modulator within a transmitter module such as may be implemented within a communication device (e.g., which may be a wireless communication device). This architecture that includes a PLL with a double balanced up-converter mixer/modulator suppresses even harmonics.Type: GrantFiled: July 1, 2010Date of Patent: March 27, 2012Assignee: Broadcom CorporationInventors: Sofoklis Plevridis, Theodoros Georgantas, Konstantinos D. Vavelidis
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Patent number: 8130051Abstract: Aspects of a method and system for varactor linearization are provided. In this regard, a relationship between control voltage and capacitance of a variable capacitor may be controlled utilizing a plurality of bias voltages communicatively coupled to a corresponding plurality of bias terminals of said variable capacitor. The variable capacitor may comprise a plurality of two-terminal unit varactors and a first terminal of each unit varactor may be coupled to an RF terminal of the variable capacitor, a second terminal of one of the unit varactors may be coupled to the control voltage, and a second terminal of each of the remaining unit varactors may be coupled to one of the bias voltages. The bias voltages may be generated via a resistor ladder and/or via the resistive nature of a portion of semiconductor substrate. The bias voltages may linearize the relationship between the control voltage and the capacitance.Type: GrantFiled: February 6, 2008Date of Patent: March 6, 2012Assignee: Broadcom CorporationInventors: Konstantinos Dimitrios Vavelidis, Theodoros Georgantas, Sofoklis Emmanouel Plevridis
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Publication number: 20120034950Abstract: An RF integrated circuit (IC) includes a first IC port for coupling a first transmit signal in a first frequency band to at least one external device and a second IC port for coupling a second transmit signal in a second frequency band to the at least one external device. A transmitter module responds to outbound data to generate the first transmit signal in a first mode of operation and to generate the second transmit signal in a second mode of operation, wherein the transmitter module generates the first transmit signal and the second transmit signal in a selected one of a plurality of wireless telephony formats based on a control signal, and wherein the plurality of wireless telephony formats includes a UMTS format and at least one non-UMTS format.Type: ApplicationFiled: October 14, 2011Publication date: February 9, 2012Applicant: Broadcom CorporationInventors: Theodoros Georgantas, Konstantinos D. Vavelidis, Sofoklis Plevridis, Ilias Bouras
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Patent number: 8112047Abstract: An RF transmitter includes a Cartesian to polar conversion section, a PLL, a DAC module, a mixing module, and a PA module. The Cartesian to polar conversion section converts a Cartesian based symbol stream into a polar based symbol stream. The PLL generates an oscillation when the RF transmitter is in a Cartesian mode or a phase modulated oscillation based on phase modulation information of the polar based symbol stream when the RF transmitter is in a polar mode. The mixing module mixes an analog Cartesian based signal with a local oscillation to produce a Cartesian based up converted signal when the RF transmitter is in the Cartesian mode and mixes an analog amplitude signal with a phase modulated local oscillation to produce a polar based up converted signal when the RF transmitter is in the polar mode.Type: GrantFiled: January 30, 2008Date of Patent: February 7, 2012Assignee: Broadcom CorporationInventors: Theodoros Georgantas, Konstantinos D. Vavelidis, Sofoklis Plevridis, Ilias Bouras
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Publication number: 20120004005Abstract: Aspects of a method and system for integrated blocker detection and automatic gain control are provided. In this regard, a communication device may generate one or more first signal strength indications based on a strength of a received signal at a first point in the analog front-end of the communication device. The communication device may generate one or more second signal strength indications based on a strength of the received signal at a second point in a digital processing module of the communication device. The first point in the analog front-end may be an input or an output of a down-conversion mixer. The second point in the digital processing module may be an output of an analog-to-digital converter or an output of a channel selection filter. The communication device may control, utilizing the first signal strength indication(s) and the second signal strength indication(s), a gain of one or more components of the communication device.Type: ApplicationFiled: August 9, 2010Publication date: January 5, 2012Inventors: Walid Ahmed, John Leung, Theodoros Georgantas, Morten Damgaard, Nelson Sollenberger
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Patent number: 8064842Abstract: An RF integrated circuit (IC) includes a first IC port for coupling a first transmit signal in a first frequency band to at least one external device and a second IC port for coupling a second transmit signal in a second frequency band to the at least one external device. A transmitter module responds to outbound data to generate the first transmit signal in a first mode of operation and to generate the second transmit signal in a second mode of operation, wherein the transmitter module generates the first transmit signal and the second transmit signal in a selected one of a plurality of wireless telephony formats based on a control signal, and wherein the plurality of wireless telephony formats includes a GSM format and at least one non-GSM format.Type: GrantFiled: April 11, 2011Date of Patent: November 22, 2011Assignee: Broadcom CorporationInventors: Theodoros Georgantas, Konstantinos D. Vavelidis, Sofoklis Plevridis, Ilias Bouras
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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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Publication number: 20110201286Abstract: A baseband digital processing module operates cooperatively with an analog signal processing module to effectuate highly adjustable and highly accurate gain adjustment in accordance with transmitter processing within a communication device. The gain adjustment and/or gain control is partitioned between the digital and analog domains by employing two cooperatively operating digital and analog modules, respectively. Gain adjustment in the analog domain is performed in a relatively more coarse fashion that in the digital domain. If desired, gain adjustment in each of the analog and digital domains is performed across a range of discrete steps. The discrete steps in the analog domain are larger than the discrete steps in the digital domain. Also, the discrete steps in the digital domain may be interposed between two successive discrete steps in the analog domain.Type: ApplicationFiled: April 28, 2011Publication date: August 18, 2011Applicant: BROADCOM CORPORATIONInventors: Theodoros Georgantas, Konstantinos D. Vavelidis, Sofoklis Plevridis, Babis (Charalampos) Kapnistis, Spyridon Kavadias