Patents by Inventor Lup Meng Loh
Lup Meng Loh 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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Publication number: 20240063831Abstract: Configurable filter bands for radio frequency communication are disclosed. In one aspect, a radio frequency module includes a plurality of n-plexers, each of the n-plexers including n filters, each of the filters configured to pass at least one radio frequency band, and at least two of the radio frequency bands having overlapping frequencies, an antenna terminal, and an antenna switch module configured to connect two or more of the n-plexers to the antenna terminal.Type: ApplicationFiled: August 17, 2023Publication date: February 22, 2024Inventors: Roman Zbigniew Arkiszewski, Daniel Louis Longstreet, Lup Meng Loh
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Patent number: 11855663Abstract: The radio frequency front-end systems herein include modules having bandwidth controllable components, such as amplifier and filters. By implementing the modules with bandwidth control, the same module can be used for operation of multiple frequency bands including a first frequency band and a second frequency band. Thus, when implementing features such as carrier aggregation, multiple-input multiple-output (MIMO), and/or sounding resource signaling (SRS) for supporting the multiple frequency bands, the total number of modules used can be reduced and/or additional feature support can be provided compared to an implementation in which each module supports a single frequency band.Type: GrantFiled: January 31, 2023Date of Patent: December 26, 2023Assignee: Skyworks Solutions, Inc.Inventors: Lup Meng Loh, Aleksey A. Lyalin, David Richard Pehlke, Anand Raghavan, Jin Hoon Cho
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Publication number: 20230412198Abstract: The radio frequency front-end systems herein include modules having bandwidth controllable components, such as amplifier and filters. By implementing the modules with bandwidth control, the same module can be used for operation of multiple frequency bands including a first frequency band and a second frequency band. Thus, when implementing features such as carrier aggregation, multiple-input multiple-output (MIMO), and/or sounding resource signaling (SRS) for supporting the multiple frequency bands, the total number of modules used can be reduced and/or additional feature support can be provided compared to an implementation in which each module supports a single frequency band.Type: ApplicationFiled: August 31, 2023Publication date: December 21, 2023Inventors: Lup Meng Loh, Aleksey A. Lyalin, David Richard Pehlke, Anand Raghavan, Jin Hoon Cho
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Publication number: 20230344452Abstract: Radio frequency front-end systems with filter reuse. In certain embodiments, a front-end system includes a filter, a low noise amplifier (LNA), and a switch interposed between the filter and an input to the LNA. In a first state of the switch, the filter serves to filter a radio frequency signal that is amplified by the LNA. The front-end system further includes a power amplifier that is coupled to the switch. Additionally, in a second state of the switch, the filter serves to filter an amplified radio frequency transmit signal provided by the power amplifier. Accordingly, a filter along a receive path of the front-end system is reused for transmit.Type: ApplicationFiled: April 27, 2023Publication date: October 26, 2023Inventors: Lup Meng Loh, Aleksey A. Lyalin, David Richard Pehlke, Anand Raghavan, Jin Hoon Cho
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Publication number: 20230179234Abstract: The radio frequency front-end systems herein include modules having bandwidth controllable components, such as amplifier and filters. By implementing the modules with bandwidth control, the same module can be used for operation of multiple frequency bands including a first frequency band and a second frequency band. Thus, when implementing features such as carrier aggregation, multiple-input multiple-output (MIMO), and/or sounding resource signaling (SRS) for supporting the multiple frequency bands, the total number of modules used can be reduced and/or additional feature support can be provided compared to an implementation in which each module supports a single frequency band.Type: ApplicationFiled: January 31, 2023Publication date: June 8, 2023Inventors: Lup Meng Loh, Aleksey A. Lyalin, David Richard Pehlke, Anand Raghavan, Jin Hoon Cho
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Patent number: 11671122Abstract: Radio frequency front-end systems with filter reuse. In certain embodiments, a front-end system includes a filter, a low noise amplifier (LNA), and a switch interposed between the filter and an input to the LNA. In a first state of the switch, the filter serves to filter a radio frequency signal that is amplified by the LNA. The front-end system further includes a power amplifier that is coupled to the switch. Additionally, in a second state of the switch, the filter serves to filter an amplified radio frequency transmit signal provided by the power amplifier. Accordingly, a filter along a receive path of the front-end system is reused for transmit.Type: GrantFiled: August 25, 2021Date of Patent: June 6, 2023Assignee: Skyworks Solutions, Inc.Inventors: Lup Meng Loh, Aleksey A. Lyalin, David Richard Pehlke, Anand Raghavan, Jin Hoon Cho
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Patent number: 11601144Abstract: The radio frequency front-end systems herein include modules having bandwidth controllable components, such as amplifier and filters. By implementing the modules with bandwidth control, the same module can be used for operation of multiple frequency bands including a first frequency band and a second frequency band. Thus, when implementing features such as carrier aggregation, multiple-input multiple-output (MIMO), and/or sounding resource signaling (SRS) for supporting the multiple frequency bands, the total number of modules used can be reduced and/or additional feature support can be provided compared to an implementation in which each module supports a single frequency band.Type: GrantFiled: August 25, 2021Date of Patent: March 7, 2023Assignee: Skyworks Solutions, Inc.Inventors: Lup Meng Loh, Aleksey A. Lyalin, David Richard Pehlke, Anand Raghavan, Jin Hoon Cho
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Publication number: 20220069846Abstract: The radio frequency front-end systems herein include modules having bandwidth controllable components, such as amplifier and filters. By implementing the modules with bandwidth control, the same module can be used for operation of multiple frequency bands including a first frequency band and a second frequency band. Thus, when implementing features such as carrier aggregation, multiple-input multiple-output (MIMO), and/or sounding resource signaling (SRS) for supporting the multiple frequency bands, the total number of modules used can be reduced and/or additional feature support can be provided compared to an implementation in which each module supports a single frequency band.Type: ApplicationFiled: August 25, 2021Publication date: March 3, 2022Inventors: Lup Meng Loh, Aleksey A. Lyalin, David Richard Pehlke, Anand Raghavan, Jin Hoon Cho
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Publication number: 20220069850Abstract: Radio frequency front-end systems with filter reuse. In certain embodiments, a front-end system includes a filter, a low noise amplifier (LNA), and a switch interposed between the filter and an input to the LNA. In a first state of the switch, the filter serves to filter a radio frequency signal that is amplified by the LNA. The front-end system further includes a power amplifier that is coupled to the switch. Additionally, in a second state of the switch, the filter serves to filter an amplified radio frequency transmit signal provided by the power amplifier. Accordingly, a filter along a receive path of the front-end system is reused for transmit.Type: ApplicationFiled: August 25, 2021Publication date: March 3, 2022Inventors: Lup Meng Loh, Aleksey A. Lyalin, David Richard Pehlke, Anand Raghavan, Jin Hoon Cho
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Publication number: 20210211145Abstract: Ultrahigh band (UHB) architectures for radio frequency (RF) front-ends are disclosed. In certain embodiments, an RF front-end for a mobile device includes a first ultrahigh band transmit/receive module connected to a first antenna, a second ultrahigh band transmit/receive module connected to the first antenna, and a first ultrahigh band receive module connected to a second antenna. The first ultrahigh band transmit/receive module is further connected to the second antenna by way of an auxiliary input of the first ultrahigh band receive module.Type: ApplicationFiled: January 7, 2021Publication date: July 8, 2021Inventors: Lup Meng Loh, Aleksey A. Lyalin, David Richard Pehlke
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Patent number: 9100099Abstract: An apparatus and method cancel transmitter leakage. The method includes generating a leakage cancelation signal by processing a downconverted signal for cancelation of a leakage signal caused by a transmitter and upconverting the downconverted signal to a radio frequency of the transmitter. The method also includes canceling at least some of the leakage signal in a received signal using the leakage cancelation signal.Type: GrantFiled: February 6, 2013Date of Patent: August 4, 2015Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventor: Lup Meng Loh
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Publication number: 20150109977Abstract: A method and apparatus support carrier aggregation. The apparatus includes a first antenna configured to transmit or receive signals in both a first high frequency band and a first low frequency band and a second antenna configured to transmit or receive signals in both a second high frequency band and a second low frequency band. At least one of the first high frequency band and the second high frequency band or the first low frequency band and the second low frequency band are different frequency bands for carrier aggregation. The apparatus may also include a third antenna and a multiband filter. The third antenna may be configured to receive signals in both the first and second high frequency bands or both the first and second low frequency bands. The multiband filter may be configured to filter the signals received by the third antenna.Type: ApplicationFiled: August 21, 2014Publication date: April 23, 2015Inventor: Lup Meng Loh
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Patent number: 8995569Abstract: An RF transmitter comprises a digital-to-IF circuit block configured to receive a digital in-phase baseband signal and a digital quadrature baseband signal and to up-convert the digital in-phase and quadrature baseband signals to a digital in-phase IF signal and to a digital quadrature IF signal. The wireless RF transmitter further comprises an IF-to-RF circuit block configured to convert the digital in-phase and quadrature IF signals to analog signals and to up-convert the analog in-phase and quadrature IF signals to an RF output signal. The digital-to-IF circuit block comprises pre-compensation circuitry configured to reduce analog impairments associated with the IF-to-RF circuit block.Type: GrantFiled: December 30, 2011Date of Patent: March 31, 2015Assignee: Samsung Electronics Co., Ltd.Inventors: Lup Meng Loh, Imtinan Elahi, Naveen Yanduru, Michael L. Brobston
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Publication number: 20140327594Abstract: An apparatus for matching impedance for use in a wireless communication is provided. The apparatus includes a forward path carrying a transmission signal to an antenna. The apparatus further comprises a quadrature feedback path configured to extract and feed back in-phase and quadrature phase components from each of a forward signal being transmitted toward the antenna and a reverse signal reflected from the antenna. A tunable matching network (TMN) is coupled to the forward path, having a plurality of tunable elements for matching an internal impedance to an impedance of the antenna. A controller is configured to calculate TMN input impedance's amplitude and phase based on the in-phase and quadrature phase components from each of the forward signal and the reverse signal.Type: ApplicationFiled: May 2, 2013Publication date: November 6, 2014Applicant: Samsung Electronics Co., LTDInventors: Yaming Zhang, Lup Meng Loh, William Hurley, John Alex Interrante
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Publication number: 20140328433Abstract: An apparatus for envelope tracking calibration for use in a wireless communication is provided. The apparatus includes a transmission signal path configured to carry a transmission signal to an antenna. An envelope signal path configured to feed an envelope signal with an envelope tracking power amplifier. A controller is configured to transmit a normal envelope signal being generated in a normal operation mode and measure a first Adjacent Channel Leakage Ratio (ACLR) corresponding to the normal envelope signal. The controller is further configured to transmit a comparison envelope signal being generated in a comparison operation mode and measure a second ACLR corresponding to the comparison envelope signal. The controller is configured to calculate a time misalignment between the transmission signal path and the envelope signal path based on a difference between the first and second ACLRs.Type: ApplicationFiled: May 1, 2013Publication date: November 6, 2014Applicant: Samsung Electronics Co., LTD.Inventors: Lup Meng Loh, John Alex Interrante, William Hurley, Yaming Zhang
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Patent number: 8873677Abstract: An apparatus for envelope tracking calibration for use in a wireless communication is provided. The apparatus includes a transmission signal path configured to carry a transmission signal to an antenna. An envelope signal path configured to feed an envelope signal with an envelope tracking power amplifier. A controller is configured to transmit a normal envelope signal being generated in a normal operation mode and measure a first Adjacent Channel Leakage Ratio (ACLR) corresponding to the normal envelope signal. The controller is further configured to transmit a comparison envelope signal being generated in a comparison operation mode and measure a second ACLR corresponding to the comparison envelope signal. The controller is configured to calculate a time misalignment between the transmission signal path and the envelope signal path based on a difference between the first and second ACLRs.Type: GrantFiled: May 1, 2013Date of Patent: October 28, 2014Assignee: Samsung Electronics Co., Ltd.Inventors: Lup Meng Loh, John Alex Interrante, William Hurley, Yaming Zhang
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Patent number: 8861431Abstract: An apparatus and method for mixed signal spread spectrum receiving and spectrum aggregation in a receiver having at least one antenna respectively receiving at least one signal are provided. The method includes modulating the at least one signal received by the receiver with at least one unique orthogonal pseudorandom (PN) code, downconverting the at least one modulated signal into at least one baseband signal, combining the at least baseband signal into an overlaid baseband signal and filtering the overlaid baseband signal, converting the overlaid baseband signal from an analog signal into a digital baseband signal, splitting the digital baseband signal into a plurality of signal paths each having the entirety of the digital baseband signal, applying one of the at least one unique orthogonal PN code to each of the plurality of signal paths, and multiplexing the plurality of signal paths into a combined digital baseband signal.Type: GrantFiled: January 11, 2013Date of Patent: October 14, 2014Assignee: Samsung Electronics Co., Ltd.Inventors: Lup Meng Loh, Michael L. Brobston
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Publication number: 20140220908Abstract: An apparatus and method cancel transmitter leakage. The method includes generating a leakage cancelation signal by processing a downconverted signal for cancelation of a leakage signal caused by a transmitter and upconverting the downconverted signal to a radio frequency of the transmitter. The method also includes canceling at least some of the leakage signal in a received signal using the leakage cancelation signal.Type: ApplicationFiled: February 6, 2013Publication date: August 7, 2014Inventor: Lup Meng Loh
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Patent number: 8798552Abstract: A reconfigurable wireless transceiver and method of use are disclosed. As one example, a reconfigurable wireless transceiver is disclosed, which includes a transmitter unit, a plurality of receiver units, and a processing unit coupled to the plurality of receiver units. A first receiver unit of the plurality of receiver units receives a first signal at a first frequency, and determines a strength level of the first signal. A second receiver unit of the plurality of receiver units searches for a second signal at a second frequency, detects the second signal at the second frequency, and determines a strength level of the detected second signal. The processing unit determines if the strength level of the detected second signal is greater than a predetermined value, and enables the second receiver unit to receive a third signal at substantially the second frequency, if the strength level of the detected second signal is greater than the predetermined value.Type: GrantFiled: August 22, 2006Date of Patent: August 5, 2014Assignee: Samsung Electronics Co., Ltd.Inventors: Michael Brobston, Seong Eun Kim, Lup Meng Loh
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Publication number: 20140198689Abstract: An apparatus and method for mixed signal spread spectrum receiving and spectrum aggregation in a receiver having at least one antenna respectively receiving at least one signal are provided. The method includes modulating the at least one signal received by the receiver with at least one unique orthogonal pseudorandom (PN) code, downconverting the at least one modulated signal into at least one baseband signal, combining the at least baseband signal into an overlaid baseband signal and filtering the overlaid baseband signal, converting the overlaid baseband signal from an analog signal into a digital baseband signal, splitting the digital baseband signal into a plurality of signal paths each having the entirety of the digital baseband signal, applying one of the at least one unique orthogonal PN code to each of the plurality of signal paths, and multiplexing the plurality of signal paths into a combined digital baseband signal.Type: ApplicationFiled: January 11, 2013Publication date: July 17, 2014Applicant: SAMSUNG ELECTRONICS CO. LTD.Inventors: Lup Meng LOH, Michael L. BROBSTON