Patents by Inventor Weiheng CHANG
Weiheng CHANG 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: 11942912Abstract: This disclosure describes amplifiers that include impedance circuits that are configured to adapt to various contexts. For example, a variable-gain amplifier can include a gain circuit configured to amplify a signal and to operate in a plurality of gain modes, and an impedance circuit coupled to the gain circuit. The impedance circuit can include an inductor and a switching-capacitive arm coupled in parallel to the inductor. The impedance circuit can be configured to operate based at least in part on a gain mode from among the plurality of gain modes.Type: GrantFiled: September 17, 2020Date of Patent: March 26, 2024Assignee: Skyworks Solutions, Inc.Inventor: Weiheng Chang
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Publication number: 20240072750Abstract: This disclosure relates to variable-gain amplifiers that include degeneration circuits configured to adapt to a gain mode that is currently being implemented. For example, a variable-gain amplifier can operate in a plurality of gain modes to amplify a signal with different levels of amplification. The variable-gain amplifier can include a gain circuit configured to amplify a signal and a degeneration circuit coupled to the gain circuit. The degeneration circuit can include an inductor and a switching-capacitive arm coupled in parallel to the inductor. The degeneration circuit can operate based on a current gain mode to change an inductance for the variable-gain amplifier.Type: ApplicationFiled: September 1, 2023Publication date: February 29, 2024Inventors: Xingyi HUA, Weiheng CHANG
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Patent number: 11784620Abstract: This disclosure relates to variable-gain amplifiers that include degeneration circuits configured to adapt to a gain mode that is currently being implemented. For example, a variable-gain amplifier can operate in a plurality of gain modes to amplify a signal with different levels of amplification. The variable-gain amplifier can include a gain circuit configured to amplify a signal and a degeneration circuit coupled to the gain circuit. The degeneration circuit can include an inductor and a switching-capacitive arm coupled in parallel to the inductor. The degeneration circuit can operate based on a current gain mode to change an inductance for the variable-gain amplifier.Type: GrantFiled: February 4, 2022Date of Patent: October 10, 2023Assignee: Skyworks Solutions, Inc.Inventors: Xingyi Hua, Weiheng Chang
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Publication number: 20220255521Abstract: This disclosure relates to variable-gain amplifiers that include degeneration circuits configured to adapt to a gain mode that is currently being implemented. For example, a variable-gain amplifier can operate in a plurality of gain modes to amplify a signal with different levels of amplification. The variable-gain amplifier can include a gain circuit configured to amplify a signal and a degeneration circuit coupled to the gain circuit. The degeneration circuit can include an inductor and a switching-capacitive arm coupled in parallel to the inductor. The degeneration circuit can operate based on a current gain mode to change an inductance for the variable-gain amplifier.Type: ApplicationFiled: February 4, 2022Publication date: August 11, 2022Inventors: Xingyi HUA, Weiheng CHANG
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Patent number: 11323073Abstract: Front-end for processing 2G signal using 3G/4G paths. In some embodiments, a front-end architecture can include a first amplification path and a second amplification path, with each being configured to amplify a 3G/4G signal, and the first amplification path including a phase shifting circuit. The front-end architecture can further include a splitter configured to receive a 2G signal and split the 2G signal into the first and second amplification paths, and a combiner configured to combine amplified 2G signals from the first and second amplification paths into a common output path. The front-end architecture can further include an impedance transformer implemented along the common output path to provide a desired impedance for the combined 2G signal.Type: GrantFiled: December 4, 2018Date of Patent: May 3, 2022Assignee: Skyworks Solutions, Inc.Inventors: Joel Richard King, Hyeong Tae Jeong, Nick Cheng, Weiheng Chang, Doel Roy
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Patent number: 11245372Abstract: This disclosure relates to variable-gain amplifiers that include degeneration circuits configured to adapt to a gain mode that is currently being implemented. For example, a variable-gain amplifier can operate in a plurality of gain modes to amplify a signal with different levels of amplification. The variable-gain amplifier can include a gain circuit configured to amplify a signal and a degeneration circuit coupled to the gain circuit. The degeneration circuit can include an inductor and a switching-capacitive arm coupled in parallel to the inductor. The degeneration circuit can operate based on a current gain mode to change an inductance for the variable-gain amplifier.Type: GrantFiled: August 27, 2020Date of Patent: February 8, 2022Assignee: Skyworks Solutions, Inc.Inventors: Xingyi Hua, Weiheng Chang
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Publication number: 20210083636Abstract: This disclosure describes amplifiers that include impedance circuits that are configured to adapt to various contexts. For example, a variable-gain amplifier can include a gain circuit configured to amplify a signal and to operate in a plurality of gain modes, and an impedance circuit coupled to the gain circuit. The impedance circuit can include an inductor and a switching-capacitive arm coupled in parallel to the inductor. The impedance circuit can be configured to operate based at least in part on a gain mode from among the plurality of gain modes.Type: ApplicationFiled: September 17, 2020Publication date: March 18, 2021Inventor: Weiheng CHANG
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Publication number: 20210067121Abstract: This disclosure relates to variable-gain amplifiers that include degeneration circuits configured to adapt to a gain mode that is currently being implemented. For example, a variable-gain amplifier can operate in a plurality of gain modes to amplify a signal with different levels of amplification. The variable-gain amplifier can include a gain circuit configured to amplify a signal and a degeneration circuit coupled to the gain circuit. The degeneration circuit can include an inductor and a switching-capacitive arm coupled in parallel to the inductor. The degeneration circuit can operate based on a current gain mode to change an inductance for the variable-gain amplifier.Type: ApplicationFiled: August 27, 2020Publication date: March 4, 2021Inventors: Xingyi HUA, Weiheng CHANG
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Publication number: 20190386616Abstract: Front-end for processing 2G signal using 3G/4G paths. In some embodiments, a front-end architecture can include a first amplification path and a second amplification path, with each being configured to amplify a 3G/4G signal, and the first amplification path including a phase shifting circuit. The front-end architecture can further include a splitter configured to receive a 2G signal and split the 2G signal into the first and second amplification paths, and a combiner configured to combine amplified 2G signals from the first and second amplification paths into a common output path. The front-end architecture can further include an impedance transformer implemented along the common output path to provide a desired impedance for the combined 2G signal.Type: ApplicationFiled: December 4, 2018Publication date: December 19, 2019Inventors: Joel Richard KING, Hyeong Tae JEONG, Nick CHENG, Weiheng CHANG, Doel ROY
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Patent number: 10153736Abstract: Circuits and methods for 2G amplification using 3G/4G linear path combination. In some embodiments, a front-end architecture can include a first amplification path and a second amplification path, with each being configured to amplify a 3G/4G signal, and the first amplification path including a phase shifting circuit. The front-end architecture can further include a splitter configured to receive a 2G signal and split the 2G signal into the first and second amplification paths, and a combiner configured to combine amplified 2G signals from the first and second amplification paths into a common output path. The front-end architecture can further include an impedance transformer implemented along the common output path to provide a desired impedance for the combined 2G signal.Type: GrantFiled: August 17, 2015Date of Patent: December 11, 2018Assignee: Skyworks Solutions, Inc.Inventors: Joel Richard King, Hyeong Tae Jeong, Nick Cheng, Weiheng Chang, Doel Roy
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Publication number: 20160365908Abstract: Antenna swap architectures for time-division duplexing communication systems. In some embodiments, an antenna routing architecture can include first nodes including a transmit (Tx) node, a primary receive (PRx) node and a diversity receive (DRx) node. The antenna routing architecture can further include second nodes including a main antenna node and a diversity antenna node. The antenna routing architecture can further include a routing circuit configured to provide one or more radio-frequency (RF) signal paths between the first nodes and the second nodes. The routing circuit can be further configured such that each of the Tx node and the PRx node is capable of being independently coupled to the main antenna node or the diversity antenna node.Type: ApplicationFiled: June 9, 2016Publication date: December 15, 2016Inventors: Weiheng CHANG, David Richard PEHLKE
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Publication number: 20160191105Abstract: Circuits and methods for 2G amplification using 3G/4G linear path combination. In some embodiments, a front-end architecture can include a first amplification path and a second amplification path, with each being configured to amplify a 3G/4G signal, and the first amplification path including a phase shifting circuit. The front-end architecture can further include a splitter configured to receive a 2G signal and split the 2G signal into the first and second amplification paths, and a combiner configured to combine amplified 2G signals from the first and second amplification paths into a common output path. The front-end architecture can further include an impedance transformer implemented along the common output path to provide a desired impedance for the combined 2G signal.Type: ApplicationFiled: August 17, 2015Publication date: June 30, 2016Inventors: Joel Richard KING, Hyeong Tae JEONG, Nick CHENG, Weiheng CHANG, Doel ROY