Patents by Inventor Robert Grant Irvine
Robert Grant Irvine 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: 10243527Abstract: A low noise amplifier comprising an adjustable gain and a variable impedance controller is provided. The low noise amplifier is configured to sink current and to adjust a shunt resistance substantially simultaneously.Type: GrantFiled: January 8, 2018Date of Patent: March 26, 2019Assignee: Futurewei Technologies, Inc.Inventors: Ping Yin, Robert Grant Irvine, Chengfang Liao, Zhihang Zhang
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Publication number: 20180131340Abstract: A low noise amplifier comprising an adjustable gain and a variable impedance controller is provided. The low noise amplifier is configured to sink current and to adjust a shunt resistance substantially simultaneously.Type: ApplicationFiled: January 8, 2018Publication date: May 10, 2018Inventors: Ping Yin, Robert Grant Irvine, Chengfang Liao, Zhihang Zhang
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Patent number: 9893693Abstract: A mobile device comprising an antenna, a receiver coupled to the antenna, and a transmitter coupled to the antenna, wherein the receiver, the transmitter, or both comprise a low noise amplifier comprising an adjustable gain and a variable impedance controller, and wherein the low noise amplifier is configured to sink current and to adjust a shunt resistance substantially simultaneously. Included is a method comprising receiving an electrical signal, substantially simultaneously adjusting an input impedance and a gain factor, amplifying the electrical signal, thereby producing an amplified signal, and outputting the amplified signal.Type: GrantFiled: December 7, 2012Date of Patent: February 13, 2018Assignee: Futurewei Technologies, Inc.Inventors: Ping Yin, Robert Grant Irvine, Chengfang Liao, Zhihang Zhang
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Patent number: 9596110Abstract: A system, apparatus and method is described for dynamically boosting (increasing) the power supply voltage to an envelope tracking (ET) modulator within a transmitter system when the target/desired power amplifier voltage supply is above a predetermined threshold (e.g., equal to the available power supply of the system, such as a battery). By boosting the power input supply to the ET modulator, the modulated power supply provided to the power amplifier (PA) is also increased. This reduces or eliminates clipping that normally occurs when the target/desired PA supply voltage is greater than the available power supply voltage and reduces distortion in the transmitted signal.Type: GrantFiled: April 2, 2015Date of Patent: March 14, 2017Assignee: Futurewei Technologies, Inc.Inventors: Hong Jiang, Wael Al-Qaq, Robert Grant Irvine, Matthew M. Kostelnik, Zhihang Zhang
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Publication number: 20160294587Abstract: A system, apparatus and method is described for dynamically boosting (increasing) the power supply voltage to an envelope tracking (ET) modulator within a transmitter system when the target/desired power amplifier voltage supply is above a predetermined threshold (e.g., equal to the available power supply of the system, such as a battery). By boosting the power input supply to the ET modulator, the modulated power supply provided to the power amplifier (PA) is also increased. This reduces or eliminates clipping that normally occurs when the target/desired PA supply voltage is greater than the available power supply voltage and reduces distortion in the transmitted signal.Type: ApplicationFiled: April 2, 2015Publication date: October 6, 2016Inventors: HONG JIANG, Wael AI-Qaq, Robert Grant Irvine, Matthew M. Kostelnik, Zhihang Zhang
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Patent number: 8886144Abstract: A receiver compensation method comprising receiving a radio frequency signal, amplifying the radio frequency signal, thereby producing an amplified signal, compensating the amplified signal, thereby producing a compensated signal, and mixing the compensated signal, thereby producing a mixed compensated signal, wherein the mixed compensated signal has a first gain difference between a positive differential from a center frequency and a negative differential from the center frequency and wherein the first gain differential is smaller than a second gain differential that would be obtained by mixing the amplified signal without compensating the amplified signal.Type: GrantFiled: November 2, 2012Date of Patent: November 11, 2014Assignee: Futurewei Technologies, Inc.Inventors: Ping Yin, Seong-Mo Yim, Feng Wang, Robert Grant Irvine, Chengfang Liao, Yusong Chi
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Publication number: 20140162732Abstract: A mobile device comprising an antenna, a receiver coupled to the antenna, and a transmitter coupled to the antenna, wherein the receiver, the transmitter, or both comprise a low noise amplifier comprising an adjustable gain and a variable impedance controller, and wherein the low noise amplifier is configured to sink current and to adjust a shunt resistance substantially simultaneously. Included is a method comprising receiving an electrical signal, substantially simultaneously adjusting an input impedance and a gain factor, amplifying the electrical signal, thereby producing an amplified signal, and outputting the amplified signal.Type: ApplicationFiled: December 7, 2012Publication date: June 12, 2014Applicant: Futurewei Technologies, Inc.Inventors: Ping Yin, Robert Grant Irvine, Chengfang Liao, Zhihang Zhang
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Patent number: 7181205Abstract: The amplitude and phase errors of the modulation and demodulation in a transceiver are corrected by a self-calibration procedure in which a test signal is applied to the baseband input of the transmitter, and the output of the modulator is looped back to the input of the demodulator. The amplitude and phase errors of the resulting signal at the baseband output of the receiver are detected, and the contributions of the transmitter and receiver to the errors are separated and resolved into amplitude and phase components. Adjustments are then made to the amplitude and phase balance in the transmit and receive signal paths to correct the errors.Type: GrantFiled: September 16, 2004Date of Patent: February 20, 2007Assignee: RF Micro Devices, Inc.Inventors: Baker Scott, David Reed, Robert Grant Irvine, Feng Wang
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Patent number: 7057457Abstract: A low-noise amplifier circuit is specified which has a switchable gain ratio. For this purpose, a parallel circuit comprising a first and a second current path (3, 4) is provided between a radio-frequency signal input and output (1, 2), with the first current path (3) having a transistor which is connected in a common-base circuit for signal amplification, and the second current path (4) having a transistor which is connected in a common-emitter circuit (7) for signal amplification, and has input impedance matching (25, 27). Owing to the good noise characteristics and the good linearity characteristics, the described low-noise amplifier circuit is suitable for use in radio-frequency receivers in which adaptive pre-amplification is required even before a frequency converter, that is to say at the radio-frequency level, because the input signal has a wide dynamic range, such as that in the case of UMTS.Type: GrantFiled: June 19, 2002Date of Patent: June 6, 2006Assignee: Infineon Technologies AGInventors: Robert-Grant Irvine, Harald Pretl, Claus Stoeger, Wolfgang Thomann
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Publication number: 20050068106Abstract: A low-noise amplifier circuit is specified which has a switchable gain ratio. For this purpose, a parallel circuit comprising a first and a second current path (3, 4) is provided between a radio-frequency signal input and output (1, 2), with the first current path (3) having a transistor which is connected in a common-base circuit for signal amplification, and the second current path (4) having a transistor which is connected in a common-emitter circuit (7) for signal amplification, and has input impedance matching (25, 27). Owing to the good noise characteristics and the good linearity characteristics, the described low-noise amplifier circuit is suitable for use in radio-frequency receivers in which adaptive pre-amplification is required even before a frequency converter, that is to say at the radio-frequency level, because the input signal has a wide dynamic range, such as that in the case of UMTS.Type: ApplicationFiled: June 19, 2002Publication date: March 31, 2005Inventor: Robert-Grant Irvine
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Patent number: 6531904Abstract: A circuit configuration for generating an output signal orthogonal to an input signal includes a delay device having an input to which an input signal is applied, an output at which an output signal is available, and a control input for controlling a time lag. A multiplier device has inputs being coupled to the input and the output of the delay device and has an output. A device for low-pass filtering is connected between the output of the multiplier device and the control input of the delay device.Type: GrantFiled: May 24, 1996Date of Patent: March 11, 2003Assignee: Infineon Technologies AGInventors: Werner Veit, Josef Fenk, Robert-Grant Irvine
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Patent number: 6225859Abstract: The integrated low-pass filter has a resistor connected, on the one hand, to an input terminal and, on the other hand, to a first capacitor and to the control terminal of a transistor. The output circuit of the transistor is connected, on the one hand, to the first capacitor and to an output terminal of the circuit. Furthermore, the output circuit of the transistor is also connected, via a current source and a second capacitor, to a first reference potential. On the other end, the output circuit of the transistor is connected to a second reference potential.Type: GrantFiled: September 14, 1998Date of Patent: May 1, 2001Assignee: Infineon Technologies AGInventors: Robert Grant Irvine, Bernd Kolb
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Patent number: 6144254Abstract: A low noise radio frequency amplifier is switchable between a low gain state and a high gain state. A first, common-emitter transistor is active in the high gain state and inactive in the low gain state. The first transistor has a base coupled to a radio frequency input and a first bias input, an emitter coupled to ground, and a collector coupled to an amplified radio frequency output. A second, common-base transistor is active in the low gain state and inactive in the high gain state. The second transistor has an emitter coupled to the radio frequency input, a base coupled to a second bias input, and a collector coupled to the amplified radio frequency output.Type: GrantFiled: June 4, 1999Date of Patent: November 7, 2000Assignee: Infineon Technologies CorporationInventors: Robert Grant Irvine, Samuel Alfred Tiller
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Patent number: 5598128Abstract: An operational amplifier includes a symmetrical end stage being formed of emitter followers. The end stage has output terminals forming outputs of the operational amplifier and has input terminals. A voltage divider is connected between the output terminals of the end stage and has a tap. A first differential amplifier stage has input terminals forming symmetrical inputs of the operational amplifier and has output terminals each being coupled to a respective one of the input terminals of the end stage. Loads each terminate a respective one of the output terminals of the first differential amplifier stage. Two second parallel-connected differential amplifier stages each have a first input terminal connected to a reference potential, a second input terminal connected to the tap of the voltage divider, and an output terminal each being coupled to a respective one of the loads.Type: GrantFiled: May 5, 1995Date of Patent: January 28, 1997Assignee: Siemens AktiengesellschaftInventors: Werner Veit, Robert-Grant Irvine