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1.发明申请FREQUENCY SYNTHESIZER ARCHITECTURE IN A TIME-DIVISION DUPLEX MODE FOR A WIRELESS DEVICE 有权用于无线设备的时分双工模式的频率合成器架构公开(公告)号：US20130229954A1
公开(公告)日：2013-09-05
申请号：US13765992
申请日：2013-02-13
Applicant: QUALCOMM INCORPORATED
Inventor： Chiewcharn Narathong , Lai Kan Leung , Soon-Seng Lau , Shrenik Patel
IPC: H03B28/00
CPC classification number: H03B28/00 , H04B1/0475 , H04B1/406 , H04B1/408
Abstract: A dual frequency synthesizer architecture for a wireless device operating in a time division duplex (TDD) mode is disclosed. In an exemplary design, the wireless device includes first and second frequency synthesizers. The first frequency synthesizer generates a first oscillator signal used to generate a first/receive local oscillator (LO) signal at an LO frequency for the receiver. The second frequency synthesizer generates a second oscillator signal used to generate a second/transmit LO signal at the same LO frequency for the transmitter. The two frequency synthesizers generate their oscillator signals to obtain receive and transmit LO signals at the same LO frequency when the wireless device operates in the TDD mode.
Abstract translation: 公开了一种用于以时分双工（TDD）模式工作的无线设备的双频合成器架构。 在示例性设计中，无线设备包括第一和第二频率合成器。 第一频率合成器产生用于产生用于接收机的LO频率的第一/接收本地振荡器（LO）信号的第一振荡器信号。 第二频率合成器产生用于产生用于发射机的相同LO频率的第二/发射LO信号的第二振荡器信号。 当无线设备在TDD模式下工作时，两个频率合成器产生其振荡器信号以获得在相同LO频率下的接收和发送LO信号。
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Patent Agency Ranking
公开(公告)号：US20210242903A1
公开(公告)日：2021-08-05
申请号：US16780509
申请日：2020-02-03
Applicant: QUALCOMM Incorporated
Inventor： Lalan Jee Mishra , Richard Dominic Wietfeldt , Soon-Seng Lau
Abstract: Crosstalk amelioration systems and methods in a radio frequency front end (RFFE) communication system provide a host or master of an RFFE bus to monitor a weakly-driven data line in the RFFE bus while a clock line is actively providing a clock signal for trigger events at one or more slaves on the RFFE bus. If the host detects noise on the data line that looks like a sequence start condition (SSC) signal, the host further signals on the data line to negate the impact of the false SSC signal and thus avoid misinterpretation by the slaves.
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3.发明授权公开(公告)号：US09344270B2
公开(公告)日：2016-05-17
申请号：US13829232
申请日：2013-03-14
Applicant: QUALCOMM Incorporated
Inventor： Li Liu , Praveen-Kumar Sampath , Lai Kan Leung , Chiewcharn Narathong , Soon-Seng Lau , Ketan Humnabadkar , Raghu Narayan Challa , Devavrata Vasant Godbole
CPC classification number: H04L7/0331 , H03B21/01 , H03D3/009 , H04W52/02 , H04W52/0209 , Y02D70/1222 , Y02D70/1262 , Y02D70/142 , Y02D70/144 , Y02D70/164
Abstract: Techniques for detecting and correcting phase discontinuity of a local oscillator (LO) signal are disclosed. In one design, a wireless device includes an LO generator and a phase detector. The LO generator generates an LO signal used for frequency conversion and is periodically powered on and off. The phase detector detects the phase of the LO signal when the LO generator is powered on. The detected phase of the LO signal is used to identify phase discontinuity of the LO signal. The wireless device may further include (i) a single-tone generator that generates a single-tone signal used to detect the phase of the LO signal, (ii) a downconverter that downconverts the single-tone signal with the LO signal and provides a downconverted signal used by the phase detector to detect the phase of LO signal, and (iii) phase corrector that corrects phase discontinuity of the LO signal in the analog domain or digital domain.
Abstract translation: 公开了用于检测和校正本地振荡器（LO）信号的相位不连续性的技术。 在一种设计中，无线设备包括LO发生器和相位检测器。 LO发生器产生用于频率转换的LO信号，并且周期性地通电和关断。 当LO发生器通电时，相位检测器检测LO信号的相位。 LO信号的检测相位用于识别LO信号的相位不连续性。 无线设备还可以包括（i）生成用于检测LO信号的相位的单音信号的单音发生器，（ii）下变频器，其使用LO信号对单音信号进行下变频，并提供 相位检测器用于检测LO信号的相位的下变频信号，以及（iii）校正模拟域或数字域中的LO信号的相位不连续性的相位校正器。
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公开(公告)号：US11177856B2
公开(公告)日：2021-11-16
申请号：US16780509
申请日：2020-02-03
Applicant: QUALCOMM Incorporated
Inventor： Lalan Jee Mishra , Richard Dominic Wietfeldt , Soon-Seng Lau
Abstract: Crosstalk amelioration systems and methods in a radio frequency front end (RFFE) communication system provide a host or master of an RFFE bus to monitor a weakly-driven data line in the RFFE bus while a clock line is actively providing a clock signal for trigger events at one or more slaves on the RFFE bus. If the host detects noise on the data line that looks like a sequence start condition (SSC) signal, the host further signals on the data line to negate the impact of the false SSC signal and thus avoid misinterpretation by the slaves.
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5.发明授权Frequency synthesizer architecture in a time-division duplex mode for a wireless device 有权用于无线设备的时分双工模式的频率合成器架构公开(公告)号：US09143085B2
公开(公告)日：2015-09-22
申请号：US13765992
申请日：2013-02-13
Applicant: QUALCOMM Incorporated
Inventor： Chiewcharn Narathong , Lai Kan Leung , Soon-Seng Lau , Shrenik Patel
CPC classification number: H03B28/00 , H04B1/0475 , H04B1/406 , H04B1/408
Abstract: A dual frequency synthesizer architecture for a wireless device operating in a time division duplex (TDD) mode is disclosed. In an exemplary design, the wireless device includes first and second frequency synthesizers. The first frequency synthesizer generates a first oscillator signal used to generate a first/receive local oscillator (LO) signal at an LO frequency for the receiver. The second frequency synthesizer generates a second oscillator signal used to generate a second/transmit LO signal at the same LO frequency for the transmitter. The two frequency synthesizers generate their oscillator signals to obtain receive and transmit LO signals at the same LO frequency when the wireless device operates in the TDD mode.
Abstract translation: 公开了一种用于以时分双工（TDD）模式工作的无线设备的双频合成器架构。 在示例性设计中，无线设备包括第一和第二频率合成器。 第一频率合成器产生用于产生用于接收机的LO频率的第一/接收本地振荡器（LO）信号的第一振荡器信号。 第二频率合成器产生用于产生用于发射机的相同LO频率的第二/发射LO信号的第二振荡器信号。 当无线设备在TDD模式下工作时，两个频率合成器产生其振荡器信号以获得在相同LO频率下的接收和发送LO信号。
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6.发明申请公开(公告)号：US20140270032A1
公开(公告)日：2014-09-18
申请号：US13829232
申请日：2013-03-14
Applicant: QUALCOMM INCORPORATED
Inventor： Li Liu , Praveen-Kumar Sampath , Lai Kan Leung , Chiewcharn Narathong , Soon-Seng Lau , Ketan Humnabadkar , Raghu Narayan Challa , Devavrata Vasant Godbole
CPC classification number: H04L7/0331 , H03B21/01 , H03D3/009 , H04W52/02 , H04W52/0209 , Y02D70/1222 , Y02D70/1262 , Y02D70/142 , Y02D70/144 , Y02D70/164
Abstract: Techniques for detecting and correcting phase discontinuity of a local oscillator (LO) signal are disclosed. In one design, a wireless device includes an LO generator and a phase detector. The LO generator generates an LO signal used for frequency conversion and is periodically powered on and off. The phase detector detects the phase of the LO signal when the LO generator is powered on. The detected phase of the LO signal is used to identify phase discontinuity of the LO signal. The wireless device may further include (i) a single-tone generator that generates a single-tone signal used to detect the phase of the LO signal, (ii) a downconverter that downconverts the single-tone signal with the LO signal and provides a downconverted signal used by the phase detector to detect the phase of LO signal, and (iii) phase corrector that corrects phase discontinuity of the LO signal in the analog domain or digital domain.
Abstract translation: 公开了用于检测和校正本地振荡器（LO）信号的相位不连续性的技术。 在一种设计中，无线设备包括LO发生器和相位检测器。 LO发生器产生用于频率转换的LO信号，并且周期性地通电和关断。 当LO发生器通电时，相位检测器检测LO信号的相位。 LO信号的检测相位用于识别LO信号的相位不连续性。 无线设备还可以包括（i）生成用于检测LO信号的相位的单音信号的单音发生器，（ii）下变频器，其使用LO信号对单音信号进行下变频，并提供 相位检测器用于检测LO信号的相位的下变频信号，以及（iii）校正模拟域或数字域中的LO信号的相位不连续性的相位校正器。
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