Patents by Inventor Jang Joon Lee
Jang Joon Lee 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: 20240120658Abstract: An exemplary embodiment provides a signal receiver device capable of detecting a radio communication signal with a high signal-to-noise ratio while internally canceling an environmental noise. A signal receiver device according to an exemplary embodiment includes a first signal detection element; and a second signal detection element electrically connected to the first signal detection element and provided with a blocking member for attenuating a communication signal among received RF signals. The signal receiver device is configured to output a difference between a first detection signal detected by the first signal detection element and a second detection signal detected by the second signal detection element as a detected receive signal.Type: ApplicationFiled: October 5, 2023Publication date: April 11, 2024Inventors: In Kui CHO, Jang Yeol KIM, Jung Hoon OH, Hyun Joon LEE
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Publication number: 20240083767Abstract: A precursor for a positive electrode active material and a method of making the same are disclosed herein. In some embodiments a method includes forming precursor seeds for a positive electrode active material by a co-precipitation reaction while supplying a transition metal aqueous solution, an ammonium cationic complexing agent, and a basic compound to a reaction solution, and growing precursor particles for a positive electrode active material by a co-precipitation reaction while supplying a transition metal aqueous solution, an ammonium cationic complexing agent, and a basic compound to the reaction solution containing the precursor seeds, wherein the co-precipitation reaction to grow the precursor particles proceeds while continuously increasing feed rates of the transition metal aqueous solution and the ammonium cationic complexing agent.Type: ApplicationFiled: February 18, 2022Publication date: March 14, 2024Applicant: LG Chem, Ltd.Inventors: Min Joon Lee, Seong Ji Ye, Seung Beom Cho, Jang Soo Lee, Yoon Bin Park
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Publication number: 20240088929Abstract: This disclosure provides systems, methods, and devices for wireless communications that support downconversion in a radio frequency (RF) system. In a first aspect, an apparatus for wireless communications includes a first mixer coupled to an input node; a second mixer coupled to the input node; and a first mixer bias circuit configured to output a first local oscillator (LO) signal, the first mixer bias circuit coupled to the first mixer and to the second mixer to output the first LO signal to the first mixer and to the second mixer. Other aspects and features are also claimed and described.Type: ApplicationFiled: September 13, 2022Publication date: March 14, 2024Inventors: Kyle David Holland, Jang Joon Lee, Aleksandar Miodrag Tasic, Prakash Thoppay Egambaram, Jian Kang
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Patent number: 11923884Abstract: This disclosure provides systems, methods, and devices for wireless communication that support reconfiguring degeneration components in a converged RF transceiver supporting carrier aggregation across sub-6 GHz frequency bands and mmWave frequency bands. In a first aspect, an apparatus includes an input port configured to receive a mixer input signal; a first mixer forming at least a portion of an HRM mixer and coupled to the input port; a first configurable degeneration component of a first processing path coupled between the input port and the first mixer; and a controller coupled to the first degeneration component, wherein the controller is configured to control a first aspect of a first degeneration component. Other aspects and features are also claimed and described.Type: GrantFiled: September 24, 2021Date of Patent: March 5, 2024Assignee: QUALCOMM IncorporatedInventors: Kyle David Holland, Jang Joon Lee, Prakash Thoppay Egambaram, Aleksandar Miodrag Tasic
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Patent number: 11922871Abstract: An emissive display device includes a display area which includes a plurality of pixels, and a driver disposed at a side of the display area, where the driver includes at least two emission signal stages disposed in one row, and an input signal line connected to the emission signal stages, and the at least two emission signal stages are connected to the same input signal line.Type: GrantFiled: July 29, 2021Date of Patent: March 5, 2024Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Hae Min Kim, Min Jae Jeong, Jang Mi Kang, Hyun Joon Kim, Jun Hyun Park, Cheol-Gon Lee
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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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Publication number: 20230421195Abstract: Carrier aggregation (CA) may cause interference between operation on two or more carriers within a user equipment (UE). This interference can degrade signal quality on one or more of the carriers involved in the carrier aggregation, which may be referred to as “desensing” one or more carriers. One or more isolating buffers may be coupled at a down-conversion mixer at a point where the down-conversion mixer receives a signal from a transmission line for isolating the transmission line from other transmission lines. The isolating buffer may reduce the effect of interference between multiple transmission lines carrying different carriers during carrier aggregation (CA) operation. The isolating buffers may be used in an RF transceiver supporting both 5G sub-7 GHz and 5G mmWave wireless networks and carrier aggregation across sub-7 GHz and mmWave bands.Type: ApplicationFiled: June 21, 2023Publication date: December 28, 2023Inventors: Jang Joon LEE, Kyle David HOLLAND, Prakash THOPPAY EGAMBARAM, Aleksandar Miodrag TASIC
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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: 11777449Abstract: An apparatus is disclosed for mixing signals. In example aspects, the apparatus includes a mixer circuit having multiple local oscillator nodes, a first node corresponding to a first frequency, and multiple second nodes corresponding to a second frequency. The mixer circuit includes multiple capacitors coupled between the multiple local oscillator nodes and the multiple second nodes. The mixer circuit has multiple switches including a first switch, a second switch, a third switch, and a fourth switch. The multiple switches are coupled between the multiple capacitors and the multiple second nodes. The first switch and the second switch are coupled between the multiple capacitors and the first node. The first switch and the second switch are disposed between the fourth switch and the third switch.Type: GrantFiled: September 20, 2022Date of Patent: October 3, 2023Assignee: QUALCOMM IncorporatedInventors: Kyle David Holland, Jang Joon Lee, Dongling Pan, Aleksandar Miodrag Tasic
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Patent number: 11728838Abstract: Carrier aggregation (CA) may cause interference between operation on two or more carriers within a user equipment (UE). This interference can degrade signal quality on one or more of the carriers involved in the carrier aggregation, which may be referred to as “desensing” one or more carriers. One or more isolating buffers may be coupled at a down-conversion mixer at a point where the down-conversion mixer receives a signal from a transmission line for isolating the transmission line from other transmission lines. The isolating buffer may reduce the effect of interference between multiple transmission lines carrying different carriers during carrier aggregation (CA) operation. The isolating buffers may be used in an RF transceiver supporting both 5G sub-7 GHz and 5G mmWave wireless networks and carrier aggregation across sub-7 GHz and mmWave bands.Type: GrantFiled: September 21, 2021Date of Patent: August 15, 2023Assignee: QUALCOMM IncorporatedInventors: Jang Joon Lee, Kyle David Holland, Prakash Thoppay Egambaram, Aleksandar Miodrag Tasic
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Publication number: 20230097399Abstract: Certain aspects of the present disclosure generally relate to techniques and apparatus for operating a wireless receiver of the apparatus in a high linearity mode. An example method includes operating the apparatus in a first mode with transmission of a plurality of transmit signals. The method also includes attenuating a received signal via an attenuator while operating the apparatus in the first mode. The method further includes amplifying the attenuated signal with an amplifier while operating the apparatus in the first mode. For certain aspects, the method further involves operating the apparatus in a second mode, bypassing the attenuator while operating the apparatus in the second mode, and amplifying the received signal with the amplifier while operating the apparatus in the second mode.Type: ApplicationFiled: September 24, 2021Publication date: March 30, 2023Inventors: Ahmed ABBAS MOHAMED HELMY, Francesco GATTA, Balasubramanian RAMACHANDRAN, Abhishek Ananthrao KULKARNI, Prakash THOPPAY EGAMBARAM, Hasnain LAKDAWALA, Aleksandar Miodrag TASIC, Jang Joon LEE, 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: 20230101419Abstract: This disclosure provides systems, methods, and devices for wireless communication that support reconfiguring degeneration components in a converged RF transceiver supporting carrier aggregation across sub-6 GHz frequency bands and mmWave frequency bands. In a first aspect, an apparatus includes an input port configured to receive a mixer input signal; a first mixer forming at least a portion of an HRM mixer and coupled to the input port; a first configurable degeneration component of a first processing path coupled between the input port and the first mixer; and a controller coupled to the first degeneration component, wherein the controller is configured to control a first aspect of a first degeneration component. Other aspects and features are also claimed and described.Type: ApplicationFiled: September 24, 2021Publication date: March 30, 2023Inventors: Kyle David Holland, Jang Joon Lee, Prakash Thoppay Egambaram, Aleksandar Miodrag Tasic
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Publication number: 20230089569Abstract: Carrier aggregation (CA) may cause interference between operation on two or more carriers within a user equipment (UE). This interference can degrade signal quality on one or more of the carriers involved in the carrier aggregation, which may be referred to as “desensing” one or more carriers. One or more isolating buffers may be coupled at a down-conversion mixer at a point where the down-conversion mixer receives a signal from a transmission line for isolating the transmission line from other transmission lines. The isolating buffer may reduce the effect of interference between multiple transmission lines carrying different carriers during carrier aggregation (CA) operation. The isolating buffers may be used in an RF transceiver supporting both 5G sub-7 GHz and 5G mmWave wireless networks and carrier aggregation across sub-7 GHz and mmWave bands.Type: ApplicationFiled: September 21, 2021Publication date: March 23, 2023Inventors: Jang Joon Lee, Kyle David Holland, Prakash Thoppay Egambaram, Aleksandar Miodrag Tasic
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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