Patents by Inventor Chiewcharn Narathong
Chiewcharn Narathong 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: 20240106466Abstract: Methods and apparatus for transmitting wireless signals using multiple transmit chains that share hardware components to reduce transmitter circuit area. One example transmitter circuit for wireless communications generally includes a first transmit chain and a second transmit chain. The first transmit chain and the second transmit chain share a digital-to-analog converter (DAC). For certain aspects, the first transmit chain and the second transmit chain may also share a frequency synthesizer and/or a baseband processor.Type: ApplicationFiled: September 22, 2022Publication date: March 28, 2024Inventors: Lai Kan LEUNG, Bo YANG, Osama ELHADIDY, Chiewcharn NARATHONG
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Publication number: 20240030952Abstract: Embodiments of this disclosure may include a receiver with a reconfigurable processing path for different signal conditions. Such a receiver may reconfigure between a mixer-first configuration and an amplifier-first configuration. In the mixer-first configuration, an RF input signal is not passed through an LNA for amplification before processing the RF input signal for downconversion to baseband and eventual extraction of the information in the signal. In the amplifier-first configuration, an RF input signal is passed through an LNA for amplification before processing the RF input signal for downconversion to baseband and eventual extraction of the information in the signal. Reconfiguring the receiver between mixer-first and amplifier-first configurations may be performed based on detection of jammer signals and/or measurement of signal-to-noise ratio (SNR).Type: ApplicationFiled: October 5, 2023Publication date: January 25, 2024Inventors: Jang Joon Lee, Kyle David Holland, Jian Kang, Aleksandar Miodrag Tasic, Chih-Fan Liao, Yingying Li, Lai Kan Leung, Chiewcharn Narathong
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Patent number: 11799507Abstract: Embodiments of this disclosure may include a receiver with a reconfigurable processing path for different signal conditions. Such a receiver may reconfigure between a mixer-first configuration and an amplifier-first configuration. In the mixer-first configuration, an RF input signal is not passed through an LNA for amplification before processing the RF input signal for downconversion to baseband and eventual extraction of the information in the signal. In the amplifier-first configuration, an RF input signal is passed through an LNA for amplification before processing the RF input signal for downconversion to baseband and eventual extraction of the information in the signal. Reconfiguring the receiver between mixer-first and amplifier-first configurations may be performed based on detection of jammer signals and/or measurement of signal-to-noise ratio (SNR).Type: GrantFiled: September 22, 2021Date of Patent: October 24, 2023Assignee: QUALCOMM IncorporatedInventors: Jang Joon Lee, Kyle David Holland, Jian Kang, Aleksandar Miodrag Tasic, Chih-Fan Liao, Yingying Li, Lai Kan Leung, Chiewcharn Narathong
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Patent number: 11658764Abstract: The disclosure relates to an apparatus including a receiver configured to process a radio frequency (RF) signal to generate a baseband signal; a radio frequency (RF) jammer detector configured to generate a signal indicative of whether an RF jammer is present at an input of the receiver; and a receiver bias circuit configured to generate a supply voltage for the receiver based on the RF jammer indication signal. In another aspect, the apparatus includes constant gain bias circuit to maintain the gain of the receiver constant in response to changes in the supply voltage. In other aspects, the receiver bias circuit may suspend the generating of the supply voltage based on the RF jammer indication signal if the power level of the target received signal is above a threshold. In other aspects, the receiver bias circuit changes the supply voltage during cyclic prefix (CP) intervals between downlink intervals.Type: GrantFiled: December 16, 2020Date of Patent: May 23, 2023Assignee: QUALCOMM IncorporatedInventors: Lai Kan Leung, Aleksandar Miodrag Tasic, Francesco Gatta, Chiewcharn Narathong, Kyle David Holland
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Publication number: 20230099161Abstract: An amplifier may include multiple stages, with the multiple stages arranged in a fan-out configuration. The fan-out configuration provides multiple amplified signals at multiple amplifier output nodes, which may be coupled to a shared set of downconverters. The shared downconverters may support processing of only a smaller bandwidth than the largest possible bandwidth of an input RF signal input to the amplifier. For example, the downconverters may support a bandwidth matching a smallest bandwidth of a supported RF signal. For example, when the amplifier is intended to support 5G mmWave RF signals and 5G sub-6 GHz RF signals, the downconverters may each individually support a bandwidth of carriers in the 5G sub-6 GHz RF signals but not individually support the entire bandwidth of a possible 5G mmWave RF signal.Type: ApplicationFiled: September 24, 2021Publication date: March 30, 2023Inventors: Kyle David Holland, Jang Joon Lee, Rahul Kodkani, Aleksandar Miodrag Tasic, Chih-Fan Liao, Lai Kan Leung, Chiewcharn Narathong
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Publication number: 20230089220Abstract: Embodiments of this disclosure may include a receiver with a reconfigurable processing path for different signal conditions. Such a receiver may reconfigure between a mixer-first configuration and an amplifier-first configuration. In the mixer-first configuration, an RF input signal is not passed through an LNA for amplification before processing the RF input signal for downconversion to baseband and eventual extraction of the information in the signal. In the amplifier-first configuration, an RF input signal is passed through an LNA for amplification before processing the RF input signal for downconversion to baseband and eventual extraction of the information in the signal. Reconfiguring the receiver between mixer-first and amplifier-first configurations may be performed based on detection of jammer signals and/or measurement of signal-to-noise ratio (SNR).Type: ApplicationFiled: September 22, 2021Publication date: March 23, 2023Inventors: Jang Joon Lee, Kyle David Holland, Jian Kang, Aleksandar Miodrag Tasic, Chih-Fan Liao, Yingying Li, Lai Kan Leung, Chiewcharn Narathong
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Patent number: 11569865Abstract: Wireless signal processing may be improved by using a configurable baseband filter (BBF) in the receive path of a transceiver. A configurable BBF may accommodate processing of different wireless signals in a single integrated circuit (IC) chip. For example, a single IC may support processing of 5G mmWave RF signals and 5G sub-7 GHz RF signals by reconfiguring the BBF with settings appropriate for the different wireless signals. The reconfiguring of the BBF may include adjusting a bandwidth of the BBF and/or adjusting a filter order of the BBF. The reconfiguring of the BBF may be performed in response to detection of jammer signals to improve rejection of the jammer signals.Type: GrantFiled: September 24, 2021Date of Patent: January 31, 2023Assignee: QUALCOMM IncorporatedInventors: Chih-Fan Liao, Aleksandar Miodrag Tasic, Kyle David Holland, Jang Joon Lee, Jian Kang, Lai Kan Leung, Chiewcharn Narathong
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Publication number: 20220190950Abstract: The disclosure relates to an apparatus including a receiver configured to process a radio frequency (RF) signal to generate a baseband signal; a radio frequency (RF) jammer detector configured to generate a signal indicative of whether an RF jammer is present at an input of the receiver; and a receiver bias circuit configured to generate a supply voltage for the receiver based on the RF jammer indication signal. In another aspect, the apparatus includes constant gain bias circuit to maintain the gain of the receiver constant in response to changes in the supply voltage. In other aspects, the receiver bias circuit may suspend the generating of the supply voltage based on the RF jammer indication signal if the power level of the target received signal is above a threshold. In other aspects, the receiver bias circuit changes the supply voltage during cyclic prefix (CP) intervals between downlink intervals.Type: ApplicationFiled: December 16, 2020Publication date: June 16, 2022Inventors: Lai Kan LEUNG, Aleksandar Miodrag TASIC, Francesco GATTA, Chiewcharn NARATHONG, Kyle David HOLLAND
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Publication number: 20210367576Abstract: A programmable filter includes a first programmable filter instance comprising a first adjustable active inductance capacitively coupled to a signal receive path, the capacitive coupling comprising at least one adjustable capacitance, the adjustable active inductance and the at least one adjustable capacitance configurable to provide a filter response at a first selected frequency, and a second programmable filter instance comprising a second adjustable active inductance capacitively coupled to the signal receive path, the capacitive coupling comprising at least one adjustable capacitance, the second adjustable active inductance and the at least one adjustable capacitance configurable to provide a filter response at a second selected frequency.Type: ApplicationFiled: May 17, 2021Publication date: November 25, 2021Inventors: Lai Kan LEUNG, Aleksandar Miodrag TASIC, Chiewcharn NARATHONG
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Patent number: 10439858Abstract: An apparatus includes a low noise amplifier (LNA) multiplexer configured to receive a plurality of radio frequency (RF) signals at a plurality of input terminals and to combine the plurality of RF signals into a combined RF signal that is output at an output terminal. The LNA multiplexer includes a plurality of input signal paths, and each input signal path is coupleable to a respective input terminal of the plurality of input terminals and is configured to receive a respective RF signal of the plurality of RF signals. The apparatus further includes an LNA demultiplexer configured to receive the combined RF signal at an input port coupled to the output terminal and to distribute the combined RF signal to a plurality of output ports, each output port of the plurality of output ports configured to output the combined RF signal to a respective downconverter of a plurality of downconverters.Type: GrantFiled: September 25, 2017Date of Patent: October 8, 2019Assignee: QUALCOMM IncorporatedInventors: Aleksandar Miodrag Tasic, Chiewcharn Narathong, Christian Holenstein, Dongling Pan, Yiwu Tang, Rajagopalan Rangarajan, Lai Kan Leung
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Patent number: 10390343Abstract: A carrier aggregation diversity antenna module with integrated low noise amplifier banks is disclosed. In an exemplary embodiment, an apparatus includes at least one switch configured to establish a transmit signal path to transmit an uplink signal from at least one diversity antenna and to establish a receive signal path to receive downlink diversity signals from the at least one diversity antenna. The apparatus also includes band selection filters configured to filter the downlink diversity signals to generate at least three diversity band signals. The apparatus also includes a multiplexing amplifier configured to amplify the diversity band signals to generate at least three amplified diversity band signals that are output to a transceiver.Type: GrantFiled: April 1, 2015Date of Patent: August 20, 2019Assignee: QUALCOMM IncorporatedInventors: Chiewcharn Narathong, Aleksandar Miodrag Tasic, Gurkanwal Singh Sahota
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Patent number: 10250314Abstract: Certain aspects of the present disclosure provide multi-way diversity receivers with multiple synthesizers. Such a multi-way diversity receiver may be implemented in a carrier aggregation (CA) transceiver. One example wireless reception diversity circuit generally includes three or more receive paths for processing received signals and two or more frequency synthesizing circuits configured to generate local oscillating signals to downconvert the received signals. Each of the frequency synthesizing circuits is shared by at most two of the receive paths, and each pair of the frequency synthesizing circuits may generate a pair of local oscillating signals having the same frequency.Type: GrantFiled: June 29, 2017Date of Patent: April 2, 2019Assignee: QUALCOMM IncorporatedInventors: Lai Kan Leung, Chiewcharn Narathong, Rajagopalan Rangarajan, Dongling Pan, Yiwu Tang, Aleksandar Miodrag Tasic
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Patent number: 10177722Abstract: A device includes a low-noise amplifier (LNA) and a matching circuit. The matching circuit is coupled to an output of the LNA and switchably coupled to at least one of a first and a second output of the device. The device may further include a power splitter switchably coupled between an output of the matching circuit and the first and/or the second output of the device.Type: GrantFiled: June 9, 2016Date of Patent: January 8, 2019Assignee: QUALCOMM IncorporatedInventors: Chuan Wang, Kevin Hsi Huai Wang, Chiewcharn Narathong, Mehmet Uzunkol, Prakash Thoppay Egambaram
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Patent number: 10033343Abstract: A device includes a reconfigurable receiver front end having variable gain and variable bandwidth configured to tune to a plurality of communication channels in a communication band, the reconfigurable receiver front end responsive to a signal power level.Type: GrantFiled: March 31, 2014Date of Patent: July 24, 2018Assignee: QUALCOMM IncorporatedInventors: Aleksandar Miodrag Tasic, Chiewcharn Narathong, Gurkanwal Singh Sahota, Shrenik Patel
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Publication number: 20180013600Abstract: An apparatus includes a low noise amplifier (LNA) multiplexer configured to receive a plurality of radio frequency (RF) signals at a plurality of input terminals and to combine the plurality of RF signals into a combined RF signal that is output at an output terminal. The LNA multiplexer includes a plurality of input signal paths, and each input signal path is coupleable to a respective input terminal of the plurality of input terminals and is configured to receive a respective RF signal of the plurality of RF signals. The apparatus further includes an LNA demultiplexer configured to receive the combined RF signal at an input port coupled to the output terminal and to distribute the combined RF signal to a plurality of output ports, each output port of the plurality of output ports configured to output the combined RF signal to a respective downconverter of a plurality of downconverters.Type: ApplicationFiled: September 25, 2017Publication date: January 11, 2018Inventors: Aleksandar Miodrag Tasic, Chiewcharn Narathong, Christian Holenstein, Dongling Pan, Yiwu Tang, Rajagopalan Rangarajan, Lai Kan Leung
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Publication number: 20170302358Abstract: Certain aspects of the present disclosure provide multi-way diversity receivers with multiple synthesizers. Such a multi-way diversity receiver may be implemented in a carrier aggregation (CA) transceiver. One example wireless reception diversity circuit generally includes three or more receive paths for processing received signals and two or more frequency synthesizing circuits configured to generate local oscillating signals to downconvert the received signals. Each of the frequency synthesizing circuits is shared by at most two of the receive paths, and each pair of the frequency synthesizing circuits may generate a pair of local oscillating signals having the same frequency.Type: ApplicationFiled: June 29, 2017Publication date: October 19, 2017Inventors: Lai Kan LEUNG, Chiewcharn NARATHONG, Rajagopalan RANGARAJAN, Dongling PAN, Yiwu TANG, Aleksandar Miodrag TASIC
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Patent number: 9774485Abstract: Multiplex modules for use in carrier aggregation receivers are disclosed. In an exemplary embodiment, an apparatus includes an LNA multiplexer configured to receive a plurality of RF signals at a plurality of input terminals and to combine the RF signals into a combined RF signal that is output from an output terminal. The apparatus also includes an LNA demultiplexer configured to receive the combined RF signal at an input port that is connected to the output terminal and to distribute the combined RF signal to a plurality of output ports.Type: GrantFiled: March 20, 2015Date of Patent: September 26, 2017Assignee: QUALCOMM IncorporatedInventors: Aleksandar Miodrag Tasic, Chiewcharn Narathong, Christian Holenstein, Dongling Pan, Yiwu Tang, Rajagopalan Rangarajan, Lai Kan Leung
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Patent number: 9712226Abstract: Certain aspects of the present disclosure provide multi-way diversity receivers with multiple synthesizers. Such a multi-way diversity receiver may be implemented in a carrier aggregation (CA) transceiver. One example wireless reception diversity circuit generally includes three or more receive paths for processing received signals and two or more frequency synthesizing circuits configured to generate local oscillating signals to downconvert the received signals. Each of the frequency synthesizing circuits is shared by at most two of the receive paths, and each pair of the frequency synthesizing circuits may generate a pair of local oscillating signals having the same frequency.Type: GrantFiled: April 2, 2015Date of Patent: July 18, 2017Assignee: QUALCOMM IncorporatedInventors: Lai Kan Leung, Chiewcharn Narathong, Rajagopalan Rangarajan, Dongling Pan, Yiwu Tang, Aleksandar Miodrag Tasic
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Publication number: 20170201218Abstract: A device includes a low-noise amplifier (LNA) and a matching circuit. The matching circuit is coupled to an output of the LNA and switchably coupled to at least one of a first and a second output of the device. The device may further include a power splitter switchably coupled between an output of the matching circuit and the first and/or the second output of the device.Type: ApplicationFiled: June 9, 2016Publication date: July 13, 2017Inventors: Chuan WANG, Kevin Hsi Huai WANG, Chiewcharn NARATHONG, Mehmet UZUNKOL, Prakash THOPPAY EGAMBARAM
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Publication number: 20170201408Abstract: Wireless receivers are configured to support carrier aggregation. A device may include at least one low-noise amplifier (LNA). The device may also include a first input path configured to convey a first signal to a first input of the at least one LNA(s), and a second input path configured to convey a second signal to a second input of the LNA(s). Further, the device may include a transformer configured to inductively couple the first input path to the second input path.Type: ApplicationFiled: June 7, 2016Publication date: July 13, 2017Inventors: Yunfei FENG, Chuan WANG, Dongling PAN, Chiewcharn NARATHONG