Patents by Inventor Thomas Marra
Thomas Marra 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: 10651799Abstract: Certain aspects of the present disclosure provide methods and apparatus for generating an envelope tracking power supply voltage. For example, certain aspects of the present disclosure provide an envelope tracking power supply having a linear amplifier having an output coupled to a power supply node of an amplifier, wherein a power supply node of the linear amplifier is coupled to a first voltage supply node. The envelope tracking power supply may also include a switch mode power supply having an output coupled to the power supply node of the amplifier. Certain aspects also include a circuit having a first switch coupled to the first voltage supply node and a second switch coupled to a second voltage supply node, wherein a power supply node of the switch mode power supply is coupled to the first switch and the second switch.Type: GrantFiled: June 28, 2019Date of Patent: May 12, 2020Assignee: QUALCOMM IncorporatedInventors: Zhiqing Zhang, Chi Fan Yung, Joseph Duncan, Jun Hua, Song Shi, Thomas Marra
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Publication number: 20190326858Abstract: Certain aspects of the present disclosure provide methods and apparatus for generating an envelope tracking power supply voltage. For example, certain aspects of the present disclosure provide an envelope tracking power supply having a linear amplifier having an output coupled to a power supply node of an amplifier, wherein a power supply node of the linear amplifier is coupled to a first voltage supply node. The envelope tracking power supply may also include a switch mode power supply having an output coupled to the power supply node of the amplifier. Certain aspects also include a circuit having a first switch coupled to the first voltage supply node and a second switch coupled to a second voltage supply node, wherein a power supply node of the switch mode power supply is coupled to the first switch and the second switch.Type: ApplicationFiled: June 28, 2019Publication date: October 24, 2019Inventors: Zhiqing ZHANG, Chi Fan YUNG, Joseph DUNCAN, Jun HUA, Song SHI, Thomas MARRA
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Patent number: 10340854Abstract: Certain aspects of the present disclosure provide methods and apparatus for generating an envelope tracking power supply voltage. For example, certain aspects of the present disclosure provide an envelope tracking power supply having a linear amplifier having an output coupled to a power supply node of an amplifier, wherein a power supply node of the linear amplifier is coupled to a first voltage supply node. The envelope tracking power supply may also include a switch mode power supply having an output coupled to the power supply node of the amplifier. Certain aspects also include a circuit having a first switch coupled to the first voltage supply node and a second switch coupled to a second voltage supply node, wherein a power supply node of the switch mode power supply is coupled to the first switch and the second switch.Type: GrantFiled: July 6, 2017Date of Patent: July 2, 2019Assignee: QUALCOMM IncorporatedInventors: Zhiqing Zhang, Chi Fan Yung, Joseph Duncan, Jun Hua, Song Shi, Thomas Marra
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Publication number: 20190044481Abstract: A power supply to power amplifier (PA) distribution network may include a first power supply. The PA distribution network may further include at least one power amplifier. The power amplifier may be coupled to the first power supply. The power amplifier may include a driver stage and a power stage. The power amplifier may be coupled to the first power supply via a first switch.Type: ApplicationFiled: April 23, 2018Publication date: February 7, 2019Inventors: Antonino SCUDERI, Thomas MARRA
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Patent number: 10128798Abstract: Certain aspects of the present disclosure provide methods and apparatus for operating an envelope tracking power supply. The method may include receiving, from a modem of a device, information indicative of a transmit waveform statistic of a signal to be wirelessly transmitted by the device. The method may further include adjusting a configuration of the envelope tracking power supply based on the transmit waveform statistic of the signal.Type: GrantFiled: July 6, 2017Date of Patent: November 13, 2018Assignee: QUALCOMM IncorporatedInventors: Joseph Duncan, Thomas Marra, Song Shi, Iulian Mirea
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Publication number: 20180034416Abstract: Certain aspects of the present disclosure provide methods and apparatus for operating an envelope tracking power supply. The method may include receiving, from a modem of a device, information indicative of a transmit waveform statistic of a signal to be wirelessly transmitted by the device. The method may further include adjusting a configuration of the envelope tracking power supply based on the transmit waveform statistic of the signal.Type: ApplicationFiled: July 6, 2017Publication date: February 1, 2018Inventors: Joseph DUNCAN, Thomas MARRA, Song SHI, Iulian MIREA
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Publication number: 20180034415Abstract: Certain aspects of the present disclosure provide methods and apparatus for generating an envelope tracking power supply voltage. For example, certain aspects of the present disclosure provide an envelope tracking power supply having a linear amplifier having an output coupled to a power supply node of an amplifier, wherein a power supply node of the linear amplifier is coupled to a first voltage supply node. The envelope tracking power supply may also include a switch mode power supply having an output coupled to the power supply node of the amplifier. Certain aspects also include a circuit having a first switch coupled to the first voltage supply node and a second switch coupled to a second voltage supply node, wherein a power supply node of the switch mode power supply is coupled to the first switch and the second switch.Type: ApplicationFiled: July 6, 2017Publication date: February 1, 2018Inventors: Zhiqing ZHANG, Chi Fan YUNG, Joseph DUNCAN, Jun HUA, Song SHI, Thomas MARRA
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Publication number: 20180034417Abstract: Certain aspects of the present disclosure provide methods and apparatus for adjusting voltage regulators of a power supply, such as an envelope tracking power supply. Certain aspects provide a power supply. The power supply may include a first voltage regulator having an output coupled to a voltage supply node of an amplifier. The power supply may further include a second voltage regulator having an output coupled to the voltage supply node of the amplifier. The power supply may further include a controller for adjusting a ratio of an average current supplied by the first voltage regulator to an average current supplied by the second voltage regulator to the voltage supply node of the amplifier based on an output voltage supplied to the voltage supply node of the amplifier by the first voltage regulator and the second voltage regulator.Type: ApplicationFiled: July 7, 2017Publication date: February 1, 2018Inventors: Joseph DUNCAN, Jongrit LERDWORATAWEE, Song SHI, Thomas MARRA
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Patent number: 8618876Abstract: An exemplary embodiment discloses a digital control block for dynamically regulating power consumption of the transmitter; and a first driver amplifier circuit comprising a plurality of bias-modes each corresponding to a power consumption level in the transmitter, the digital control block to instruct the first driver amplifier circuit to operate in a selected bias-mode to regulate power consumption of the transmitter.Type: GrantFiled: May 30, 2008Date of Patent: December 31, 2013Assignee: QUALCOMM IncorporatedInventors: Junxiong Deng, Gurkanwal Singh Sahota, Prashanth Akula, Thomas Marra, Vladimir Aparin
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Publication number: 20120236958Abstract: An exemplary embodiment discloses a digital control block for dynamically regulating power consumption of the transmitter; and a first driver amplifier circuit comprising a plurality of bias-modes each corresponding to a power consumption level in the transmitter, the digital control block to instruct the first driver amplifier circuit to operate in a selected bias-mode to regulate power consumption of the transmitter.Type: ApplicationFiled: May 30, 2008Publication date: September 20, 2012Applicant: QUALCOMM IncorporatedInventors: Junxiong Deng, Gurkanwal Singh Sahota, Prashanth Akula, Thomas Marra, Vladimir Aparin
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Patent number: 7068984Abstract: Bandwidth reduction of amplitude and/or phase components of relatively wide bandwidth composite signal. In an exemplary embodiment, an EER amplifier system for CDMA signal amplification includes an amplitude bandwidth reduction module included in an amplitude signal component path and a phase bandwidth reduction module is included in a phase signal component path, for controlling an RF amplifier. The phase bandwidth reduction module may reduce the phase component bandwidth of the input signal by, for example, generating a non-linear relationship between phase signal amplitude and input signal amplitude. The amplitude bandwidth reduction module may reduce the amplitude component bandwidth of the input signal by, for example, generating a non-linear relationship between the supply voltage to the RF amplifier and an input signal amplitude.Type: GrantFiled: June 15, 2001Date of Patent: June 27, 2006Assignee: Telefonaktiebolaget LM Ericsson (publ)Inventors: Lennart Mathe, Thomas Marra
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Patent number: 6893101Abstract: A biasing circuit for biasing a device (e.g., a GaAs field effect transistor) used for amplifying a radio frequency (RF) signal, the biasing circuit including an active element in series with a resistor, the active element providing a relatively low impedance over a bandwidth comparable to an amplitude modulation bandwidth of the RF signal, such that a DC bias voltage applied at the active element has a fixed DC voltage at the resistor input, i.e., without any memory effect, thereby allowing for improved predistortion compensation of non-linear voltage of the RF signal.Type: GrantFiled: July 27, 2001Date of Patent: May 17, 2005Assignee: Telefonaktiebolaget L.M. EricssonInventors: Thomas Marra, Lennart Mathe
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Patent number: 6670801Abstract: Second-order harmonic tuning of an active device, such as a transistor used in a radio frequency (RF) power amplifier circuit, is accomplished by positioning a quarter-wavelength stub along a transmission line coupled to an output of the device, such that the output is presented with a desired impedance for the second harmonic.Type: GrantFiled: July 31, 2001Date of Patent: December 30, 2003Assignee: Telefonaktiebolaget L.M. EricssonInventors: Heng-Yu Jian, Thomas Marra
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Publication number: 20030025487Abstract: Second-order harmonic tuning of an active device, such as a transistor used in a radio frequency (RF) power amplifier circuit, is accomplished by positioning a quarter-wavelength stub along a transmission line coupled to an output of the device, such that the output is presented with a desired impedance for the second harmonic.Type: ApplicationFiled: July 31, 2001Publication date: February 6, 2003Applicant: Telefonaktiebolaget LM EricssonInventors: Heng-Yu Jian, Thomas Marra
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Publication number: 20030020546Abstract: A biasing circuit for biasing a device (e.g., a GaAs field effect transistor) used for amplifying a radio frequency (RF) signal, the biasing circuit including an active element in series with a resistor, the active element providing a relatively low impedance over a bandwidth comparable to an amplitude modulation bandwidth of the RF signal, such that a DC bias voltage applied at the active element has a fixed DC voltage at the resistor input, i.e., without any memory effect, thereby allowing for improved predistortion compensation of non-linear voltage of the RF signal.Type: ApplicationFiled: July 27, 2001Publication date: January 30, 2003Applicant: Telefonaktiebolaget LM EricssonInventors: Thomas Marra, Lennart Mathe
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Publication number: 20020193085Abstract: Bandwidth reduction of amplitude and/or phase components of relatively wide bandwidth composite signal. In an exemplary embodiment, an EER amplifier system for CDMA signal amplification includes an amplitude bandwidth reduction module included in an amplitude signal component path and a phase bandwidth reduction module is included in a phase signal component path, for controlling an RF amplifier. The phase bandwidth reduction module may reduce the phase component bandwidth of the input signal by, for example, generating a non-linear relationship between phase signal amplitude and input signal amplitude. The amplitude bandwidth reduction module may reduce the amplitude component bandwidth of the input signal by, for example, generating a non-linear relationship between the supply voltage to the RF amplifier and an input signal amplitude.Type: ApplicationFiled: June 15, 2001Publication date: December 19, 2002Applicant: Telefonaktiebolaget LM EricssonInventors: Lennart Mathe, Thomas Marra