Patents by Inventor Paul Joseph Draxler
Paul Joseph Draxler 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: 9831837Abstract: The present disclosure includes dynamic power divider circuits and methods. In one embodiment, a dynamic power divider includes first and second quarter wave lines that receive an input signal and produce first and second signal on second terminals of the lines. Dynamic power division of the input signal uses a variable impedance circuit between the second terminal of the first quarter wave line and the second terminal of the second quarter wave line. The variable impedance may reduce impedance between two output paths as the input signal power increases or increase impedance between the output paths as the input signal power decreases.Type: GrantFiled: November 5, 2014Date of Patent: November 28, 2017Assignee: QUALCOMM IncorporatedInventors: Joonhoi Hur, Paul Joseph Draxler
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Patent number: 9419561Abstract: The present disclosure includes circuits and methods for power amplifiers. In one embodiment, a main amplifier stage and peaking amplifier stage of a power amplifier receive a modulated supply voltage. The peaking amplifier stage is biased dynamically to adjust the bias of peaking stage to compensate for changes in the power supply voltage. A bias voltage may be increased as the supply voltage on the peaking stage decreases, and the bias voltage may be decreased as the supply voltage on the peaking stage increases. Accordingly, bias characteristics of the peaking stage are maintained across supply voltage variations, and the efficiency of the power amplifier is improved.Type: GrantFiled: April 9, 2014Date of Patent: August 16, 2016Assignee: QUALCOMM, IncorporatedInventors: Joonhoi Hur, Paul Joseph Draxler
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Patent number: 9344038Abstract: Exemplary embodiments are related to a tri-phase digital polar modulator. A device may include a modulator configured to generate a primary phase modulated signal including the most significant bits (MSBs) of a modulated signal, a leading phase modulated signal including a first least significant bits (LSB) of the modulated signal, and a lagging phase modulated signal including a second LSB of the modulated signal. The device may also include a combination unit configured to add the primary phase modulated signal, the leading phase modulated signal, and the lagging phase modulated signal.Type: GrantFiled: February 7, 2014Date of Patent: May 17, 2016Assignee: QUALCOMM IncorporatedInventors: Joonhoi Hur, Paul Joseph Draxler, Jeremy Darren Dunworth, Peter D Heidmann
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Publication number: 20160126921Abstract: The present disclosure includes dynamic power divider circuits and methods. In one embodiment, a dynamic power divider includes first and second quarter wave lines that receive an input signal and produce first and second signal on second terminals of the lines. Dynamic power division of the input signal uses a variable impedance circuit between the second terminal of the first quarter wave line and the second terminal of the second quarter wave line. The variable impedance may reduce impedance between two output paths as the input signal power increases or increase impedance between the output paths as the input signal power decreases.Type: ApplicationFiled: November 5, 2014Publication date: May 5, 2016Inventors: Joonhoi Hur, Paul Joseph Draxler
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Patent number: 9252713Abstract: Embodiments of the present disclosure include a bias circuit for generating bias voltages to stacked transistors. In one embodiment, stacked transistors are coupled between an input transistor and an output node. A modulated power supply voltage and an input signal produce a voltage at the output node. The modulated power supply voltage is provided as an input to the bias circuit. Bias voltages are generated that change with the power supply voltage. In one embodiment, particular transistors in the stack are biased so that their control terminals are effectively short circuited when the power supply voltage is reduced.Type: GrantFiled: June 6, 2014Date of Patent: February 2, 2016Assignee: QUALCOMM IncorporatedInventors: Joonhoi Hur, Paul Joseph Draxler, Calogero Presti, Marco Cassia
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Patent number: 9253735Abstract: A method of wireless communication includes determining spectral positions of intermodulation distortion products for a multi-cluster transmission. The method also includes mapping the spectral positions to corresponding spectral regions. The method further includes determining a maximum power reduction value of the multi-cluster transmission based on the corresponding spectral regions.Type: GrantFiled: October 1, 2013Date of Patent: February 2, 2016Assignee: QUALCOMM INCORPORATEDInventors: Philip David Coan, Paul Joseph Draxler, In Hyuck Yeo
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Patent number: 9231527Abstract: The present disclosure includes circuits and methods for power amplifiers. In one embodiment, a main and peaking amplifier receive dynamic power supply voltages to operate an RF power amplifier in a high efficiency range for a particular output voltage. The power supply voltages may be changed based on an output voltage so that the power amplifier operates within a high efficiency plateau. In one embodiment, different discrete power supply voltage levels are used for different output voltage ranges. In another embodiment, a continuous time varying power supply voltage is provided as the power supply voltage. A dynamic supply voltage may be generated having a lower frequency than a signal path of the power amplifier.Type: GrantFiled: November 22, 2013Date of Patent: January 5, 2016Assignee: QUALCOMM IncorporatedInventors: Joonhoi Hur, Paul Joseph Draxler
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Publication number: 20150295541Abstract: The present disclosure includes circuits and methods for power amplifiers. In one embodiment, a main amplifier stage and peaking amplifier stage of a power amplifier receive a modulated supply voltage. The peaking amplifier stage is biased dynamically to adjust the bias of peaking stage to compensate for changes in the power supply voltage. A bias voltage may be increased as the supply voltage on the peaking stage decreases, and the bias voltage may be decreased as the supply voltage on the peaking stage increases. Accordingly, bias characteristics of the peaking stage are maintained across supply voltage variations, and the efficiency of the power amplifier is improved.Type: ApplicationFiled: April 9, 2014Publication date: October 15, 2015Applicant: QUALCOMM IncorporatedInventors: Joonhoi Hur, Paul Joseph Draxler
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Publication number: 20150244322Abstract: Embodiments of the present disclosure include a bias circuit for generating bias voltages to stacked transistors. In one embodiment, stacked transistors are coupled between an input transistor and an output node. A modulated power supply voltage and an input signal produce a voltage at the output node. The modulated power supply voltage is provided as an input to the bias circuit. Bias voltages are generated that change with the power supply voltage. In one embodiment, particular transistors in the stack are biased so that their control terminals are effectively short circuited when the power supply voltage is reduced.Type: ApplicationFiled: June 6, 2014Publication date: August 27, 2015Inventors: Joonhoi Hur, Paul Joseph Draxler, Calogero Presti, Marco Cassia
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Publication number: 20150229272Abstract: Exemplary embodiments are related to a tri-phase digital polar modulator. A device may include a modulator configured to generate a primary phase modulated signal including the most significant bits (MSBs) of a modulated signal, a leading phase modulated signal including a first least significant bits (LSB) of the modulated signal, and a lagging phase modulated signal including a second LSB of the modulated signal.Type: ApplicationFiled: February 7, 2014Publication date: August 13, 2015Applicant: QUALCOMM IncorporatedInventors: Joonhoi Hur, Paul Joseph Draxler, Jeremy Darren Dunworth, Peter D. Heidmann
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Publication number: 20140092838Abstract: A method of wireless communication includes determining spectral positions of intermodulation distortion products for a multi-cluster transmission. The method also includes mapping the spectral positions to corresponding spectral regions. The method further includes determining a maximum power reduction value of the multi-cluster transmission based on the corresponding spectral regions.Type: ApplicationFiled: October 1, 2013Publication date: April 3, 2014Applicant: QUALCOMM IncorporatedInventors: Philip David COAN, Paul Joseph DRAXLER, In Hyuck YEO
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Patent number: 8483631Abstract: A method of predistorting a waveform for input to an amplifier includes receiving information associated with the waveform, the information comprising a modulation configuration of the waveform. The method further includes predicting a chain model for the waveform based on the modulation configuration. In addition, the method includes predistorting the waveform for input to the amplifier, based on the chain model, an ideal waveform, and target output power. An apparatus is also provided for predistorting a waveform for input to an amplifier.Type: GrantFiled: September 10, 2008Date of Patent: July 9, 2013Assignee: QUALCOMM IncorporatedInventors: Philip David Coan, Paul Joseph Draxler
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Publication number: 20100069023Abstract: A method of predistorting a waveform for input to an amplifier includes receiving information associated with the waveform, the information comprising a modulation configuration of the waveform. The method further includes predicting a chain model for the waveform based on the modulation configuration. In addition, the method includes predistorting the waveform for input to the amplifier, based on the chain model, an ideal waveform, and target output power. An apparatus is also provided for predistorting a waveform for input to an amplifier.Type: ApplicationFiled: September 10, 2008Publication date: March 18, 2010Applicant: QUALCOMM IncorporatedInventors: Philip David Coan, Paul Joseph Draxler