Patents by Inventor Vikas Vinayak
Vikas Vinayak 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: 8018277Abstract: A power amplifier controller circuit controls an adjustable impedance matching network at the output of a power amplifier to vary its load line to improve the efficiency of the RF PA. The PA controller circuit comprises an amplitude control loop that determines an amplitude correction signal. The amplitude loop is configured to control or correct for distortion from the adjustable matching network based upon the amplitude correction signal.Type: GrantFiled: August 20, 2010Date of Patent: September 13, 2011Assignee: Quantance, Inc.Inventors: Serge Francois Drogi, Vikas Vinayak
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Patent number: 8013674Abstract: An RF power amplifier system adjusts the supply voltage to the power amplifier based upon an amplitude correction signal indicating the amplitude difference between the amplitude of the RF input signal and an attenuated amplitude of the RF output signal of the power amplifier. A variable gain amplifier (VGA) adjusts the amplitude of the RF input signal, thus providing a second means of adjusting the amplitude of the output of the power amplifier. The gain of the VGA or the supply voltage to the power amplifier is controlled based on the AC components of the amplitude correction signal, while the DC components of the amplitude correction signal are blocked from controlling the VGA or the supply voltage to the power amplifier. The DC level of the gain control of the VGA, the average supply voltage to the power amplifier, or the closed loop gain of the overall amplitude correction loop is controlled separately by a compression control signal.Type: GrantFiled: August 10, 2010Date of Patent: September 6, 2011Assignee: Quantance, Inc.Inventors: Serge Francois Drogi, Vikas Vinayak
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Patent number: 8014735Abstract: A radio frequency (RF) power amplifier system is provided, in which a distortion of the RF output signal from the power amplifier is estimated by comparing the RF output signal with reference modulation information. The supply voltage to the power amplifier is adjusted so that the estimated distortion of the RF output signal corresponds to a predetermined distortion level. The predetermined distortion level is set to represent an acceptable distortion level at the RF output signal.Type: GrantFiled: November 6, 2007Date of Patent: September 6, 2011Assignee: Quantance, Inc.Inventors: Vikas Vinayak, Serge Francois Drogi, Martin Tomasz
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Publication number: 20110189966Abstract: A power amplifier controller circuit controls a power amplifier based upon an amplitude correction signal indicating the amplitude difference between the amplitude of the input signal and an attenuated amplitude of the output signal. The power amplifier controller circuit comprises an amplitude control loop and a phase control loop. The amplitude control loop adjusts the supply voltage to the power amplifier based upon the amplitude correction signal. The amplitude correction signal may also be split into two or more signals with different frequency ranges and provided respectively to different types of power supplies with different efficiencies to generate the adjusted supply voltage to the power amplifier. The phase control loop adjusts the phase of the input signal based upon a phase error signal indicating a phase difference between phases of the input signal and the output signal to reduce phase distortion generated by the power amplifier.Type: ApplicationFiled: April 8, 2011Publication date: August 4, 2011Applicant: QUANTANCE, INC.Inventors: Vikas Vinayak, Serge Francois Drogi
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Publication number: 20110148519Abstract: A power amplifier power controller in the power amplifier system monitors various operating conditions of the power amplifier, and controls the output transmit power of the power amplifier by coordinated control of both the input drive level to the power amplifier and the gain of the power amplifier. The power amplifier power controller controls the input drive level to the power amplifier so that the input drive level does not change substantially while adjusting the gain of the power amplifier to maximize the transmit power. The power amplifier power controller may also adjust the input drive level by some portion of the overall change required to the power of the power amplifier, while adjusting the gain of the power amplifier by the remaining portion of such overall change.Type: ApplicationFiled: December 18, 2009Publication date: June 23, 2011Applicant: Quantance, Inc.Inventors: Serge Francois Drogi, Martin Tomasz, Vikas Vinayak
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Publication number: 20110140777Abstract: An RF power amplifier system comprises an amplitude control loop and a phase control loop. The amplitude control loop adjusts the supply voltage to the power amplifier based upon the amplitude correction signal indicating the amplitude difference between the amplitude of the input signal and an attenuated amplitude of the output signal. The phase control loop adjusts the phase of the input signal based upon a phase error signal indicating a phase difference between phases of the input signal and the output signal. The phase control loop may comprise one or more variable phase delays introducing a relative phase delay to allow the phase differences between the input and output signals of the PA circuit to be within a range compatible with a phase comparator generating the phase error signal, and a low frequency blocking module that removes the larger extent, lower frequency components of the phase error signal.Type: ApplicationFiled: February 24, 2011Publication date: June 16, 2011Applicant: QUANTANCE, INC.Inventors: Serge Francois Drogi, Vikas Vinayak, Mark Gehring, Cary Renzema, Jeremy Lubkin
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Patent number: 7933570Abstract: A power amplifier controller circuit controls a power amplifier based upon an amplitude correction signal indicating the amplitude difference between the amplitude of the input signal and an attenuated amplitude of the output signal. The power amplifier controller circuit comprises an amplitude control loop and a phase control loop. The amplitude control loop adjusts the supply voltage to the power amplifier based upon the amplitude correction signal. The amplitude correction signal may also be split into two or more signals with different frequency ranges and provided respectively to different types of power supplies with different efficiencies to generate the adjusted supply voltage to the power amplifier. The phase control loop adjusts the phase of the input signal based upon a phase error signal indicating a phase difference between phases of the input signal and the output signal to reduce phase distortion generated by the power amplifier.Type: GrantFiled: May 4, 2006Date of Patent: April 26, 2011Assignee: Quantance, Inc.Inventors: Vikas Vinayak, Serge Francois Drogi
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Patent number: 7917105Abstract: A power amplifier controller circuit controls a power amplifier based upon an amplitude correction signal indicating the amplitude difference between the amplitude of the input signal and an attenuated amplitude of the output signal. The power amplifier controller circuit comprises an amplitude control loop and a phase control loop. The amplitude control loop adjusts the supply voltage to the power amplifier based upon the amplitude correction signal. The amplitude control loop may also compensate for impedance mismatch with the load by increasing the power delivered from the power amplifier to the load, or decrease the output power of the power amplifier upon detection of excessive power dissipation in the power amplifier. The phase control loop adjusts the phase of the input signal based upon a phase error signal indicating a phase difference between phases of the input signal and the output signal to reduce phase distortion generated by the power amplifier.Type: GrantFiled: June 14, 2010Date of Patent: March 29, 2011Assignee: Quantance, Inc.Inventors: Serge Francois Drogi, Vikas Vinayak, Martin Tomasz
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Patent number: 7917106Abstract: An RF power amplifier system comprises an amplitude control loop and a phase control loop. The amplitude control loop adjusts the supply voltage to the power amplifier based upon the amplitude correction signal indicating the amplitude difference between the amplitude of the input signal and an attenuated amplitude of the output signal. The phase control loop adjusts the phase of the input signal based upon a phase error signal indicating a phase difference between phases of the input signal and the output signal. The phase control loop may comprise one or more variable phase delays introducing a relative phase delay to allow the phase differences between the input and output signals of the PA circuit to be within a range compatible with a phase comparator generating the phase error signal, and a low frequency blocking module that removes the larger extent, lower frequency components of the phase error signal.Type: GrantFiled: January 31, 2007Date of Patent: March 29, 2011Assignee: Quantance, Inc.Inventors: Serge Francois Drogi, Vikas Vinayak, Mark Gehring, Cary Renzema, Jeremy Lubkin
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Publication number: 20110043282Abstract: A power amplifier controller circuit controls an adjustable impedance matching network at the output of a power amplifier to vary its load line to improve the efficiency of the RF PA. The PA controller circuit comprises an amplitude control loop that determines an amplitude correction signal. The amplitude loop is configured to control or correct for distortion from the adjustable matching network based upon the amplitude correction signal.Type: ApplicationFiled: August 20, 2010Publication date: February 24, 2011Applicant: QUANTANCE, INC.Inventors: Serge Francois Drogi, Vikas Vinayak
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Patent number: 7876853Abstract: A system including a phase comparator to compare a first signal and a second signal to generate a phase error signal, and a controller to generate an adjusted phase error signal from the phase error signal in response to an amplitude of at least one of the first signal and the second signal.Type: GrantFiled: April 15, 2010Date of Patent: January 25, 2011Assignee: Quantance, Inc.Inventors: Serge F. Drogi, Vikas Vinayak, Mark R. Gehring, Martin A. Tomasz
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Patent number: 7869542Abstract: A system including a phase comparator to compare a first signal and a second signal to generate a phase error signal, and a controller to generate an adjusted phase error signal from the phase error signal in response to an amplitude of at least one of the first signal and the second signal.Type: GrantFiled: February 5, 2007Date of Patent: January 11, 2011Assignee: Quantance, Inc.Inventors: Serge F. Drogi, Vikas Vinayak, Mark R. Gehring, Martin A. Tomasz
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Publication number: 20100321109Abstract: An RF power amplifier system adjusts the supply voltage to the power amplifier based upon an amplitude correction signal indicating the amplitude difference between the amplitude of the RF input signal and an attenuated amplitude of the RF output signal of the power amplifier. A variable gain amplifier (VGA) adjusts the amplitude of the RF input signal, thus providing a second means of adjusting the amplitude of the output of the power amplifier. The gain of the VGA or the supply voltage to the power amplifier is controlled based on the AC components of the amplitude correction signal, while the DC components of the amplitude correction signal are blocked from controlling the VGA or the supply voltage to the power amplifier. The DC level of the gain control of the VGA, the average supply voltage to the power amplifier, or the closed loop gain of the overall amplitude correction loop is controlled separately by a compression control signal.Type: ApplicationFiled: August 10, 2010Publication date: December 23, 2010Applicant: QUANTANCE, INC.Inventors: Serge Francois Drogi, Vikas Vinayak
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Publication number: 20100311365Abstract: A power amplifier controller controls a power amplifier and is coupled to a polar modulator. The polar modulator generates an amplitude component and a phase-modulated component of the desired RF modulated signal, and outputs to the power amplifier controller. The power amplifier controller regenerates a combined phase and amplitude modulated RF signal to generate an input signal to a power amplifier by adjusting the gain of a VGA based on the amplitude component of the desired RF modulated signal. Concurrently, the power amplifier controller both controls an adjusted supply voltage to the PA and adjusts the gain of the VGA based upon an amplitude correction signal or amplitude error signal.Type: ApplicationFiled: August 20, 2010Publication date: December 9, 2010Applicant: QUANTANCE, INC.Inventors: Vikas Vinayak, Serge Francois Drogi, Martin Tomasz
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Publication number: 20100301934Abstract: A power amplifier controller circuit controls a power amplifier based upon an amplitude correction signal indicating the amplitude difference between the amplitude of the input signal and an attenuated amplitude of the output signal. The power amplifier controller circuit comprises an amplitude control loop and a phase control loop. The amplitude control loop adjusts the supply voltage to the power amplifier based upon the amplitude correction signal. The amplitude control loop may also compensate for impedance mismatch with the load by increasing the power delivered from the power amplifier to the load, or decrease the output power of the power amplifier upon detection of excessive power dissipation in the power amplifier. The phase control loop adjusts the phase of the input signal based upon a phase error signal indicating a phase difference between phases of the input signal and the output signal to reduce phase distortion generated by the power amplifier.Type: ApplicationFiled: June 14, 2010Publication date: December 2, 2010Applicant: QUANTANCE, INC.Inventors: Serge Francois Drogi, Vikas Vinayak, Martin Tomasz
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Patent number: 7782134Abstract: A power amplifier controller circuit controls an adjustable impedance matching network at the output of a power amplifier to vary its load line to improve the efficiency of the RF PA. The PA controller circuit comprises an amplitude control loop that determines an amplitude correction signal. The amplitude loop is configured to control or correct for distortion from the adjustable matching network based upon the amplitude correction signal.Type: GrantFiled: February 5, 2009Date of Patent: August 24, 2010Assignee: Quantance, Inc.Inventors: Serge Francois Drogi, Vikas Vinayak
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Patent number: 7783269Abstract: A power amplifier controller controls a power amplifier and is coupled to a polar modulator. The polar modulator generates an amplitude component and a phase-modulated component of the desired RF modulated signal, and outputs to the power amplifier controller. The power amplifier controller regenerates a combined phase and amplitude modulated RF signal to generate an input signal to a power amplifier by adjusting the gain of a VGA based on the amplitude component of the desired RF modulated signal. Concurrently, the power amplifier controller both controls an adjusted supply voltage to the PA and adjusts the gain of the VGA based upon an amplitude correction signal or amplitude error signal.Type: GrantFiled: September 20, 2007Date of Patent: August 24, 2010Assignee: Quantance, Inc.Inventors: Vikas Vinayak, Serge Francois Drogi, Martin Tomasz
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Patent number: 7777566Abstract: An RF power amplifier system adjusts the supply voltage to the power amplifier based upon an amplitude correction signal indicating the amplitude difference between the amplitude of the RF input signal and an attenuated amplitude of the RF output signal of the power amplifier. A variable gain amplifier (VGA) adjusts the amplitude of the RF input signal, thus providing a second means of adjusting the amplitude of the output of the power amplifier. The gain of the VGA or the supply voltage to the power amplifier is controlled based on the AC components of the amplitude correction signal, while the DC components of the amplitude correction signal are blocked from controlling the VGA or the supply voltage to the power amplifier. The DC level of the gain control of the VGA, the average supply voltage to the power amplifier, or the closed loop gain of the overall amplitude correction loop is controlled separately by a compression control signal.Type: GrantFiled: February 5, 2009Date of Patent: August 17, 2010Assignee: Quantance, Inc.Inventors: Serge Francois Drogi, Vikas Vinayak
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Publication number: 20100201402Abstract: A system including a phase comparator to compare a first signal and a second signal to generate a phase error signal, and a controller to generate an adjusted phase error signal from the phase error signal in response to an amplitude of at least one of the first signal and the second signal.Type: ApplicationFiled: April 15, 2010Publication date: August 12, 2010Applicant: QUANTANCE, INC.Inventors: Serge F. Drogi, Vikas Vinayak, Mark R. Gehring, Martin A. Tomasz
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Publication number: 20100194476Abstract: An RF power amplifier system adjusts the supply voltage to the power amplifier based upon an amplitude correction signal indicating the amplitude difference between the amplitude of the RF input signal and an attenuated amplitude of the RF output signal of the power amplifier. A variable gain amplifier (VGA) adjusts the amplitude of the RF input signal, thus providing a second means of adjusting the amplitude of the output of the power amplifier. The gain of the VGA or the supply voltage to the power amplifier is controlled based on the AC components of the amplitude correction signal, while the DC components of the amplitude correction signal are blocked from controlling the VGA or the supply voltage to the power amplifier. The DC level of the gain control of the VGA, the average supply voltage to the power amplifier, or the closed loop gain of the overall amplitude correction loop is controlled separately by a compression control signal.Type: ApplicationFiled: February 5, 2009Publication date: August 5, 2010Applicant: QUANTANCE, INC.Inventors: Serge Francois Drogi, Vikas Vinayak