Patents by Inventor Jason Millard
Jason Millard 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: 9560596Abstract: This disclosure relates to adaptively reducing the peak power of harmonic distortions as a function of the operating conditions for transmission communications. Specifically, the bias of the amplifier is adaptively increased to reduce harmonic distortions when a small fraction of the resource blocks are active.Type: GrantFiled: September 13, 2012Date of Patent: January 31, 2017Assignee: Qorvo US, Inc.Inventors: Jason Millard, Arthur Nguyen
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Patent number: 9197182Abstract: The present disclosure relates to envelope power supply calibration of a multi-mode RF power amplifier (PA) to ensure adequate headroom when operating using one of multiple communications modes. The communications modes may include multiple modulation modes, a half-duplex mode, a full-duplex mode, or any combination thereof. As such, each communications mode may have specific peak-to-average power and linearity requirements for the multi-mode RF PA. As a result, each communications mode may have corresponding envelope power supply headroom requirements. The calibration may include determining a saturation operating constraint based on calibration data obtained during saturated operation of the multi-mode RF PA. During operation of the multi-mode RF PA, the envelope power supply may be restricted to provide a minimum allowable magnitude based on an RF signal level of the multi-mode RF PA, the communications mode, and the saturation operating constraint to provide adequate headroom.Type: GrantFiled: August 27, 2013Date of Patent: November 24, 2015Assignee: RF Micro Devices, Inc.Inventors: Brian Baxter, Jason Millard, Roman Zbigniew Arkiszewski, Steven Selby
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Patent number: 9031522Abstract: The present disclosure relates to envelope power supply calibration of a multi-mode RF power amplifier (PA) to ensure adequate headroom when operating using one of multiple communications modes. The communications modes may include multiple modulation modes, a half-duplex mode, a full-duplex mode, or any combination thereof. As such, each communications mode may have specific peak-to-average power and linearity requirements for the multi-mode RF PA. As a result, each communications mode may have corresponding envelope power supply headroom requirements. The calibration may include determining a saturation operating constraint based on calibration data obtained during saturated operation of the multi-mode RF PA. During operation of the multi-mode RF PA, the envelope power supply may be restricted to provide a minimum allowable magnitude based on an RF signal level of the multi-mode RF PA, the communications mode, and the saturation operating constraint to provide adequate headroom.Type: GrantFiled: August 27, 2013Date of Patent: May 12, 2015Assignee: RF Micro Devices, Inc.Inventors: Brian Baxter, Jason Millard, Roman Zbigniew Arkiszewski, Steven Selby
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Patent number: 9020452Abstract: The present disclosure relates to envelope power supply calibration of a multi-mode RF power amplifier (PA) to ensure adequate headroom when operating using one of multiple communications modes. The communications modes may include multiple modulation modes, a half-duplex mode, a full-duplex mode, or any combination thereof. As such, each communications mode may have specific peak-to-average power and linearity requirements for the multi-mode RF PA. As a result, each communications mode may have corresponding envelope power supply headroom requirements. The calibration may include determining a saturation operating constraint based on calibration data obtained during saturated operation of the multi-mode RF PA. During operation of the multi-mode RF PA, the envelope power supply may be restricted to provide a minimum allowable magnitude based on an RF signal level of the multi-mode RF PA, the communications mode, and the saturation operating constraint to provide adequate headroom.Type: GrantFiled: August 27, 2013Date of Patent: April 28, 2015Assignee: RF Micro Devices, Inc.Inventors: Brian Baxter, Jason Millard, Roman Zbigniew Arkiszewski, Steven Selby
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Patent number: 8712349Abstract: A power amplifier (PA) envelope power supply and a process to select a converter operating mode of the PA envelope power supply are disclosed. The PA envelope power supply operates in one of a first converter operating mode and a second converter operating mode. The process for selecting the converter operating mode is based on a selected communications mode of a radio frequency (RF) communications system, a target output power from RF PA circuitry of the RF communications system, and a direct current (DC) power supply voltage.Type: GrantFiled: November 28, 2011Date of Patent: April 29, 2014Assignee: RF Micro Devices, Inc.Inventors: William David Southcombe, Jason Millard, Chris Levesque, Brian Baxter, Roman Zbigniew Arkiszewski, David E. Jones, Scott Yoder, Terry J. Stockert
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Publication number: 20130344828Abstract: The present disclosure relates to envelope power supply calibration of a multi-mode RF power amplifier (PA) to ensure adequate headroom when operating using one of multiple communications modes. The communications modes may include multiple modulation modes, a half-duplex mode, a full-duplex mode, or any combination thereof. As such, each communications mode may have specific peak-to-average power and linearity requirements for the multi-mode RF PA. As a result, each communications mode may have corresponding envelope power supply headroom requirements. The calibration may include determining a saturation operating constraint based on calibration data obtained during saturated operation of the multi-mode RF PA. During operation of the multi-mode RF PA, the envelope power supply may be restricted to provide a minimum allowable magnitude based on an RF signal level of the multi-mode RF PA, the communications mode, and the saturation operating constraint to provide adequate headroom.Type: ApplicationFiled: August 27, 2013Publication date: December 26, 2013Applicant: RF Micro Devices, Inc.Inventors: Brian Baxter, Jason Millard, Roman Zbigniew Arkiszewski, Steven Selby
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Publication number: 20130344833Abstract: The present disclosure relates to envelope power supply calibration of a multi-mode RF power amplifier (PA) to ensure adequate headroom when operating using one of multiple communications modes. The communications modes may include multiple modulation modes, a half-duplex mode, a full-duplex mode, or any combination thereof. As such, each communications mode may have specific peak-to-average power and linearity requirements for the multi-mode RF PA. As a result, each communications mode may have corresponding envelope power supply headroom requirements. The calibration may include determining a saturation operating constraint based on calibration data obtained during saturated operation of the multi-mode RF PA. During operation of the multi-mode RF PA, the envelope power supply may be restricted to provide a minimum allowable magnitude based on an RF signal level of the multi-mode RF PA, the communications mode, and the saturation operating constraint to provide adequate headroom.Type: ApplicationFiled: August 27, 2013Publication date: December 26, 2013Applicant: RF Micro Devices, IncInventors: Brian Baxter, Jason Millard, Roman Zbigniew Arkiszewski, Steven Selby
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Publication number: 20130342270Abstract: The present disclosure relates to envelope power supply calibration of a multi-mode RF power amplifier (PA) to ensure adequate headroom when operating using one of multiple communications modes. The communications modes may include multiple modulation modes, a half-duplex mode, a full-duplex mode, or any combination thereof. As such, each communications mode may have specific peak-to-average power and linearity requirements for the multi-mode RF PA. As a result, each communications mode may have corresponding envelope power supply headroom requirements. The calibration may include determining a saturation operating constraint based on calibration data obtained during saturated operation of the multi-mode RF PA. During operation of the multi-mode RF PA, the envelope power supply may be restricted to provide a minimum allowable magnitude based on an RF signal level of the multi-mode RF PA, the communications mode, and the saturation operating constraint to provide adequate headroom.Type: ApplicationFiled: August 27, 2013Publication date: December 26, 2013Applicant: RF Micro Devices, Inc.Inventors: Brian Baxter, Jason Millard, Roman Zbigniew Arkiszewski, Steven Selby
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Patent number: 8548398Abstract: The present disclosure relates to envelope power supply calibration of a multi-mode RF power amplifier (PA) to ensure adequate headroom when operating using one of multiple communications modes. The communications modes may include multiple modulation modes, a half-duplex mode, a full-duplex mode, or any combination thereof. As such, each communications mode may have specific peak-to-average power and linearity requirements for the multi-mode RF PA. As a result, each communications mode may have corresponding envelope power supply headroom requirements. The calibration may include determining a saturation operating constraint based on calibration data obtained during saturated operation of the multi-mode RF PA. During operation of the multi-mode RF PA, the envelope power supply may be restricted to provide a minimum allowable magnitude based on an RF signal level of the multi-mode RF PA, the communications mode, and the saturation operating constraint to provide adequate headroom.Type: GrantFiled: February 1, 2011Date of Patent: October 1, 2013Assignee: RF Micro Devices, Inc.Inventors: Brian Baxter, Jason Millard, Roman Zbigniew Arkiszewski, Steven Selby
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Publication number: 20130064144Abstract: This disclosure relates to adaptively reducing the peak power of harmonic distortions as a function of the operating conditions for transmission communications. Specifically, the bias of the amplifier is adaptively increased to reduce harmonic distortions when a small fraction of the resource blocks are active.Type: ApplicationFiled: September 13, 2012Publication date: March 14, 2013Applicant: RF MICRO DEVICES, INC.Inventors: Jason Millard, Arthur Nguyen
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Publication number: 20120299646Abstract: A power amplifier (PA) envelope power supply and a process to select a converter operating mode of the PA envelope power supply are disclosed. The PA envelope power supply operates in one of a first converter operating mode and a second converter operating mode. The process for selecting the converter operating mode is based on a selected communications mode of a radio frequency (RF) communications system, a target output power from RF PA circuitry of the RF communications system, and a direct current (DC) power supply voltage.Type: ApplicationFiled: November 28, 2011Publication date: November 29, 2012Applicant: RF MICRO DEVICES, INC.Inventors: William David Southcombe, Jason Millard, Chris Levesque, Brian Baxter, Roman Zbigniew Arkiszewski, David E. Jones, Scott Yoder, Terry J. Stockert
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Publication number: 20120034893Abstract: The present disclosure relates to envelope power supply calibration of a multi-mode RF power amplifier (PA) to ensure adequate headroom when operating using one of multiple communications modes. The communications modes may include multiple modulation modes, a half-duplex mode, a full-duplex mode, or any combination thereof. As such, each communications mode may have specific peak-to-average power and linearity requirements for the multi-mode RF PA. As a result, each communications mode may have corresponding envelope power supply headroom requirements. The calibration may include determining a saturation operating constraint based on calibration data obtained during saturated operation of the multi-mode RF PA. During operation of the multi-mode RF PA, the envelope power supply may be restricted to provide a minimum allowable magnitude based on an RF signal level of the multi-mode RF PA, the communications mode, and the saturation operating constraint to provide adequate headroom.Type: ApplicationFiled: February 1, 2011Publication date: February 9, 2012Applicant: RF MICRO DEVICES, INC.Inventors: Brian Baxter, Jason Millard, Roman Zbigniew Arkiszewski, Steven Selby
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Publication number: 20060128325Abstract: A low-noise switching voltage regulator for supplying a voltage to a radio frequency (RF) power amplifier is disclosed. In one embodiment, the invention can be conceptualized as a power amplifier supply circuit, comprising a pair of oppositely polarized semiconductor switches, and a data formatter configured to supply a data stream having a voltage transition on at least every other bit to each of the pair of oppositely polarized semiconductor switches.Type: ApplicationFiled: February 1, 2006Publication date: June 15, 2006Inventors: Chris Levesque, Jaleh Komaili, Jason Millard
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Publication number: 20060035620Abstract: An adaptive band-pass filter for a wireless receiver comprises a band-pass filter associated with the receiver, the band-pass filter configured to selectively filter the received signal, and a switch responsive to a control signal, the switch configured to control the band-pass filter based on a level of the received signal.Type: ApplicationFiled: August 12, 2004Publication date: February 16, 2006Inventors: Jason Millard, William Domino, James Snider
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Publication number: 20050104657Abstract: A power control loop for a power amplifier is disclosed. Embodiments of the power control loop include deriving a secondary control signal. The secondary control signal may be used to control a gain applied to the power signal in the power control loop and to control a supply current or voltage delivered to a power amplifier.Type: ApplicationFiled: November 13, 2003Publication date: May 19, 2005Inventors: James Snider, Jason Millard