Patents by Inventor Steven Selby
Steven Selby 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: 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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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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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: 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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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: 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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Patent number: 7857474Abstract: An example vehicle instrument panel includes a control panel having illuminated buttons formed with an illuminatable decorative surface. The disclosed decorative surface includes a translucent layer disposed between a background layer and a graphic layer. Material is removed from the background layer to reveal the underlying translucent and graphic layers. The depth within which material is removed is determined to fall within a thickness of the translucent layer such that any variation in depth is accommodated within the translucent layer.Type: GrantFiled: November 14, 2008Date of Patent: December 28, 2010Assignee: Continental Automotive Systems US, Inc.Inventors: Steven Selby, Vyacheslav B. Birman, Qiling Yu
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Publication number: 20090129050Abstract: A disclosed vehicle instrument panel includes a control panel having illuminated buttons formed with an illuminatable decorative surface. The disclosed decorative surface includes a translucent layer disposed between a background layer and a graphic layer. Material is removed from the background layer to reveal the underlying translucent and graphic layers. The depth within which material is removed is determined to fall within a thickness of the translucent layer such that any variation in depth is accommodated within the translucent layer.Type: ApplicationFiled: November 14, 2008Publication date: May 21, 2009Inventors: Steven Selby, Vyacheslav B. Birman, Qiling Yu