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1. 发明授权

US08929840B2 Local oscillator buffer and mixer having adjustable size 有权
标题翻译：具有可调大小的本地振荡器缓冲器和混频器
公开(公告)号：US08929840B2
公开(公告)日：2015-01-06
申请号：US12209164
申请日：2008-09-11
申请人： Sankaran Aniruddhan , Chiewcharn Narathong , Sriramgopal Sridhara , Ravi Sridhara , Gurkanwal Singh Sahota , Frederic Bossu , Ojas M. Choksi
发明人： Sankaran Aniruddhan , Chiewcharn Narathong , Sriramgopal Sridhara , Ravi Sridhara , Gurkanwal Singh Sahota , Frederic Bossu , Ojas M. Choksi
IPC分类号： H04B1/02 , H04B1/06 , H04B7/00 , H04B1/26 , H03D7/16 , H03D7/14 , H03G3/30
CPC分类号： H03D7/166 , H03D7/1441 , H03D7/1483 , H03D7/165 , H03D2200/0025 , H03G3/3052
摘要： Selectable sizes for a local oscillator (LO) buffer and mixer are disclosed. In an exemplary embodiment, LO buffer and/or mixer size may be increased when a receiver or transmitter operates in a high gain mode, while LO buffer and/or mixer size may be decreased when the receiver or transmitter operates in a low gain mode. In an exemplary embodiment, LO buffer and mixer sizes are increased and decreased in lock step. Circuit topologies and control schemes for specific exemplary embodiments of LO buffers and mixers having adjustable size are disclosed.
摘要翻译：公开了本地振荡器（LO）缓冲器和混频器的可选尺寸。在示例性实施例中，当接收机或发射机以高增益模式工作时，可以增加LO缓冲器和/或混频器大小，而当接收机或发射机以低增益模式工作时，LO缓冲器和/或混频器大小可能会减小。在示例性实施例中，锁定步骤中LO缓冲器和混合器尺寸增加和减小。公开了具有可调节尺寸的LO缓冲器和混合器的具体示例性实施例的电路拓扑和控制方案。

2. 发明申请

US20090075620A1 LOCAL OSCILLATOR BUFFER AND MIXER HAVING ADJUSTABLE SIZE 有权
标题翻译：本地振荡器缓冲器和具有可调整尺寸的混频器
公开(公告)号：US20090075620A1
公开(公告)日：2009-03-19
申请号：US12209164
申请日：2008-09-11
申请人： Sankaran Aniruddhan , Chiewcharn Narathong , Sriramgopal Sridhara , Ravi Sridhara , Gurkanwal Singh Sahota , Frederic Bossu , Ojas M. Choksi
发明人： Sankaran Aniruddhan , Chiewcharn Narathong , Sriramgopal Sridhara , Ravi Sridhara , Gurkanwal Singh Sahota , Frederic Bossu , Ojas M. Choksi
IPC分类号： H04B1/26
CPC分类号： H03D7/166 , H03D7/1441 , H03D7/1483 , H03D7/165 , H03D2200/0025 , H03G3/3052
摘要： Selectable sizes for a local oscillator (LO) buffer and mixer are disclosed. In an exemplary embodiment, LO buffer and/or mixer size may be increased when a receiver or transmitter operates in a high gain mode, while LO buffer and/or mixer size may be decreased when the receiver or transmitter operates in a low gain mode. In an exemplary embodiment, LO buffer and mixer sizes are increased and decreased in lock step. Circuit topologies and control schemes for specific exemplary embodiments of LO buffers and mixers having adjustable size are disclosed.
摘要翻译：公开了本地振荡器（LO）缓冲器和混频器的可选尺寸。在示例性实施例中，当接收机或发射机以高增益模式工作时，可以增加LO缓冲器和/或混频器大小，而当接收机或发射机以低增益模式工作时，LO缓冲器和/或混频器大小可能会减小。在示例性实施例中，锁定步骤中LO缓冲器和混合器尺寸增加和减小。公开了具有可调节尺寸的LO缓冲器和混合器的具体示例性实施例的电路拓扑和控制方案。

3. 发明授权

US08090332B2 Tracking filter for a receiver 有权
标题翻译：跟踪接收器的过滤器
公开(公告)号：US08090332B2
公开(公告)日：2012-01-03
申请号：US11955118
申请日：2007-12-12
申请人： Gurkanwal Singh Sahota , Chiewcharn Narathong , Ravi Sridhara
发明人： Gurkanwal Singh Sahota , Chiewcharn Narathong , Ravi Sridhara
IPC分类号： H04B1/10 , H04B1/26 , H03D1/00
CPC分类号： H04B1/18
摘要： A tracking filter for attenuating out-of-band signals and adjacent channel signals in a receiver is described. In one exemplary design, an apparatus includes a tracking filter, an LNA, and a downconverter. The tracking filter includes a summer, a filter, and an upconverter. The summer subtracts a feedback signal from an input signal and provides a first signal. The LNA amplifies the first signal and provides a second signal. The downconverter frequency downconverts the second signal and provides an output signal. The filter filters (e.g., differentiates) the output signal and provides a third signal. The filter blocks a desired signal and passes out-of-band signal components. The upconverter frequency upconverts the third signal and provides a fourth signal from which the feedback signal is derived. The tracking filter has an equivalent bandpass filter response and a variable center frequency determined based on the frequency of the desired signal.
摘要翻译：描述了用于衰减接收机中的带外信号和相邻信道信号的跟踪滤波器。在一个示例性设计中，装置包括跟踪滤波器，LNA和下变频器。跟踪过滤器包括夏季，过滤器和上变频器。夏季从输入信号中减去反馈信号并提供第一信号。 LNA放大第一个信号并提供第二个信号。下变频器降频转换第二信号并提供输出信号。滤波器（例如，微分）输出信号并提供第三信号。滤波器阻挡所需的信号并传出带外信号分量。上变频器对第三信号进行上变频，并提供第四信号，从中得到反馈信号。跟踪滤波器具有等效的带通滤波器响应和基于期望信号的频率确定的可变中心频率。

4. 发明申请

US20090156152A1 TRACKING FILTER FOR A RECEIVER 有权
标题翻译：跟踪接收器的过滤器
公开(公告)号：US20090156152A1
公开(公告)日：2009-06-18
申请号：US11955118
申请日：2007-12-12
申请人： Gurkanwal Singh Sahota , Chiewcharn Narathong , Ravi Sridhara
发明人： Gurkanwal Singh Sahota , Chiewcharn Narathong , Ravi Sridhara
IPC分类号： H04B1/10 , H04B1/16
CPC分类号： H04B1/18
摘要： A tracking filter for attenuating out-of-band signals and adjacent channel signals in a receiver is described. In one exemplary design, an apparatus includes a tracking filter, an LNA, and a downconverter. The tracking filter includes a summer, a filter, and an upconverter. The summer subtracts a feedback signal from an input signal and provides a first signal. The LNA amplifies the first signal and provides a second signal. The downconverter frequency downconverts the second signal and provides an output signal. The filter filters (e.g., differentiates) the output signal and provides a third signal. The filter blocks a desired signal and passes out-of-band signal components. The upconverter frequency upconverts the third signal and provides a fourth signal from which the feedback signal is derived. The tracking filter has an equivalent bandpass filter response and a variable center frequency determined based on the frequency of the desired signal.
摘要翻译：描述了用于衰减接收机中的带外信号和相邻信道信号的跟踪滤波器。在一个示例性设计中，装置包括跟踪滤波器，LNA和下变频器。跟踪过滤器包括夏季，过滤器和上变频器。夏季从输入信号中减去反馈信号并提供第一信号。 LNA放大第一个信号并提供第二个信号。下变频器降频转换第二信号并提供输出信号。滤波器（例如，微分）输出信号并提供第三信号。滤波器阻挡所需的信号并传出带外信号分量。上变频器对第三信号进行上变频，并提供第四信号，从中得到反馈信号。跟踪滤波器具有等效的带通滤波器响应和基于期望信号的频率确定的可变中心频率。

5. 发明授权

US08599938B2 Linear and polar dual mode transmitter circuit 有权
标题翻译：线性和极性双模发射电路
公开(公告)号：US08599938B2
公开(公告)日：2013-12-03
申请号：US12277913
申请日：2008-11-25
申请人： Sankaran Aniruddhan , Chiewcharn Narathong , Ravi Sridhara , Babak Nejati
发明人： Sankaran Aniruddhan , Chiewcharn Narathong , Ravi Sridhara , Babak Nejati
IPC分类号： H04L27/00
CPC分类号： H03C5/00 , H03C3/40 , H03D7/1441 , H03D7/1458 , H03D7/1483 , H03D7/1491 , H03D7/165 , H03D7/166 , H03D2200/0023 , H03D2200/0084 , H03G3/3042 , H04L27/34 , H04L27/36 , H04L27/361 , H04L27/362 , H04L27/38 , H04L27/389
摘要： Method and apparatus for configuring a transmitter circuit to support linear or polar mode. In the linear mode, a baseband signal is specified by adjusting the amplitudes of in-phase (I) and quadrature (Q) signals, while in the polar mode, the information signal is specified by adjusting the phase of a local oscillator (LO) signal and the amplitude of either an I or a Q signal. In an exemplary embodiment, two mixers are provided for both linear and polar mode, with a set of switches selecting the appropriate input signals provided to one of the mixers based on whether the device is operating in linear or polar mode. In an exemplary embodiment, each mixer may be implemented using a scalable architecture that efficiently adjusts mixer size based on required transmit power.
摘要翻译：用于配置发射机电路以支持线性或极坐标模式的方法和装置。在线性模式中，通过调整同相（I）和正交（Q）信号的幅度来指定基带信号，而在极坐标模式中，通过调整本地振荡器（LO）的相位来指定信息信号，信号和I或Q信号的振幅。在示例性实施例中，为线性模式和极坐标模式提供两个混合器，一组开关基于装置是以线性模式还是极坐标模式选择提供给混合器之一的适当输入信号。在示例性实施例中，可以使用可升级架构来实现每个混合器，该架构可以基于所需的发射功率有效地调整混频器的大小。

6. 发明申请

US20090190692A1 LINEAR AND POLAR DUAL MODE TRANSMITTER CIRCUIT 有权
标题翻译：线性和极性双模发射机电路
公开(公告)号：US20090190692A1
公开(公告)日：2009-07-30
申请号：US12277913
申请日：2008-11-25
申请人： Sankaran Aniruddhan , Chiewcharn Narathong , Ravi Sridhara , Babak Nejati
发明人： Sankaran Aniruddhan , Chiewcharn Narathong , Ravi Sridhara , Babak Nejati
IPC分类号： H04B1/04 , H04L27/00
CPC分类号： H03C5/00 , H03C3/40 , H03D7/1441 , H03D7/1458 , H03D7/1483 , H03D7/1491 , H03D7/165 , H03D7/166 , H03D2200/0023 , H03D2200/0084 , H03G3/3042 , H04L27/34 , H04L27/36 , H04L27/361 , H04L27/362 , H04L27/38 , H04L27/389
摘要： Method and apparatus for configuring a transmitter circuit to support linear or polar mode. In the linear mode, a baseband signal is specified by adjusting the amplitudes of in-phase (I) and quadrature (Q) signals, while in the polar mode, the information signal is specified by adjusting the phase of a local oscillator (LO) signal and the amplitude of either an I or a Q signal. In an exemplary embodiment, two mixers are provided for both linear and polar mode, with a set of switches selecting the appropriate input signals provided to one of the mixers based on whether the device is operating in linear or polar mode. In an exemplary embodiment, each mixer may be implemented using a scalable architecture that efficiently adjusts mixer size based on required transmit power.
摘要翻译：用于配置发射机电路以支持线性或极坐标模式的方法和装置。在线性模式中，通过调整同相（I）和正交（Q）信号的幅度来指定基带信号，而在极坐标模式中，通过调整本地振荡器（LO）的相位来指定信息信号，信号和I或Q信号的振幅。在示例性实施例中，为线性模式和极坐标模式提供两个混合器，一组开关基于装置是以线性模式还是极坐标模式选择提供给混合器之一的适当输入信号。在示例性实施例中，可以使用可升级架构来实现每个混合器，该架构可以基于所需的发射功率有效地调整混频器的大小。

7. 发明授权

US09154357B2 Multiple-input multiple-output (MIMO) low noise amplifiers for carrier aggregation 有权
标题翻译：用于载波聚合的多输入多输出（MIMO）低噪声放大器
公开(公告)号：US09154357B2
公开(公告)日：2015-10-06
申请号：US13593764
申请日：2012-08-24
申请人： Aleksandar Miodrag Tasic , Anosh Bomi Davierwalla , Berke Cetinoneri , Jusung Kim , Chiewcharn Narathong , Klaas van Zalinge , Gurkanwal Singh Sahota , James Ian Jaffee
发明人： Aleksandar Miodrag Tasic , Anosh Bomi Davierwalla , Berke Cetinoneri , Jusung Kim , Chiewcharn Narathong , Klaas van Zalinge , Gurkanwal Singh Sahota , James Ian Jaffee
IPC分类号： H04B1/18 , H04L27/26 , H03G3/20 , H03F1/22 , H03F3/193 , H03F3/68 , H03F3/72
CPC分类号： H04L27/2647 , H03F1/223 , H03F3/193 , H03F3/68 , H03F3/72 , H03G3/20
摘要： Multiple-input multiple-output (MIMO) low noise amplifiers (LNAs) supporting carrier aggregation are disclosed. In an exemplary design, an apparatus (e.g., a wireless device, an integrated circuit, etc.) includes a MIMO LNA having a plurality of gain circuits, a drive circuit, and a plurality of load circuits. The gain circuits receive at least one input radio frequency (RF) signal and provide at least one amplified RF signal. Each gain circuit receives and amplifies one input RF signal and provides one amplified RF signal when the gain circuit is enabled. The at least one input RF signal include transmissions sent on multiple carriers at different frequencies to the wireless device. The drive circuit receives the at least one amplified RF signal and provides at least one drive RF signal. The load circuits receive the at least one drive RF signal and provide at least one output RF signal.
摘要翻译：公开了支持载波聚合的多输入多输出（MIMO）低噪声放大器（LNA）。在示例性设计中，装置（例如，无线装置，集成电路等）包括具有多个增益电路的MIMO LNA，驱动电路和多个负载电路。增益电路接收至少一个输入射频（RF）信号并提供至少一个放大的RF信号。当增益电路使能时，每个增益电路接收并放大一个输入RF信号并提供一个放大的RF信号。所述至少一个输入RF信号包括以不同频率的多个载波发送到无线设备的传输。驱动电路接收至少一个放大的RF信号并提供至少一个驱动RF信号。负载电路接收至少一个驱动RF信号并提供至少一个输出RF信号。

8. 发明申请

US20130316670A1 MULTIPLE-INPUT MULTIPLE-OUTPUT (MIMO) LOW NOISE AMPLIFIERS FOR CARRIER AGGREGATION 有权
标题翻译：多输入多输出（MIMO）低噪声放大器，用于载波聚合
公开(公告)号：US20130316670A1
公开(公告)日：2013-11-28
申请号：US13593764
申请日：2012-08-24
申请人： Aleksandar Miodrag Tasic , Anosh Bomi Davierwalla , Berke Cetinoneri , Jusung Kim , Chiewcharn Narathong , Klaas van Zalinge , Gurkanwal Singh Sahota , James Ian Jaffee
发明人： Aleksandar Miodrag Tasic , Anosh Bomi Davierwalla , Berke Cetinoneri , Jusung Kim , Chiewcharn Narathong , Klaas van Zalinge , Gurkanwal Singh Sahota , James Ian Jaffee
IPC分类号： H03G3/20
CPC分类号： H04L27/2647 , H03F1/223 , H03F3/193 , H03F3/68 , H03F3/72 , H03G3/20
摘要： Multiple-input multiple-output (MIMO) low noise amplifiers (LNAs) supporting carrier aggregation are disclosed. In an exemplary design, an apparatus (e.g., a wireless device, an integrated circuit, etc.) includes a MIMO LNA having a plurality of gain circuits, a drive circuit, and a plurality of load circuits. The gain circuits receive at least one input radio frequency (RF) signal and provide at least one amplified RF signal. Each gain circuit receives and amplifies one input RF signal and provides one amplified RF signal when the gain circuit is enabled. The at least one input RF signal include transmissions sent on multiple carriers at different frequencies to the wireless device. The drive circuit receives the at least one amplified RF signal and provides at least one drive RF signal. The load circuits receive the at least one drive RF signal and provide at least one output RF signal.
摘要翻译：公开了支持载波聚合的多输入多输出（MIMO）低噪声放大器（LNA）。在示例性设计中，装置（例如，无线装置，集成电路等）包括具有多个增益电路的MIMO LNA，驱动电路和多个负载电路。增益电路接收至少一个输入射频（RF）信号并提供至少一个放大的RF信号。当增益电路使能时，每个增益电路接收并放大一个输入RF信号并提供一个放大的RF信号。所述至少一个输入RF信号包括以不同频率的多个载波发送到无线设备的传输。驱动电路接收至少一个放大的RF信号并提供至少一个驱动RF信号。负载电路接收至少一个驱动RF信号并提供至少一个输出RF信号。

9. 发明申请

US20090315621A1 AMPLIFIER WITH GAIN EXPANSION STAGE 有权
标题翻译：具增益放大器的放大器
公开(公告)号：US20090315621A1
公开(公告)日：2009-12-24
申请号：US12143669
申请日：2008-06-20
申请人： Chiewcharn Narathong , Sankaran Aniruddhan , Wenjun Su
发明人： Chiewcharn Narathong , Sankaran Aniruddhan , Wenjun Su
IPC分类号： H03F1/14 , H03F3/68
CPC分类号： H03F1/3276 , H03F1/301 , H03F1/308 , H03F1/3241 , H03F3/245 , H03F3/3022 , H03F2200/336 , H03F2200/451 , H03F2200/453 , H03F2203/30099 , H03F2203/30132 , H03F2203/7231
摘要： Techniques are disclosed for extending an amplifier's linear operating range by concatenating an amplifier exhibiting gain compression with a gain expansion stage. In an exemplary embodiment, a gain expansion stage incorporates a Class-B stage, a Class-AB stage, or a combination of the two. In an exemplary embodiment, both the gain compression stage and gain expansion stage are provided with a replica current biasing scheme to ensure stable biasing current over variations in temperature, process, and/or supply voltage. Further disclosed is an output voltage biasing scheme to set the DC output voltage to ensure maximum linear operating range.
摘要翻译：公开了通过将展现增益压缩的放大器与增益扩展级相连接来扩展放大器的线性工作范围的技术。在示例性实施例中，增益扩展阶段包括B类阶段，AB类阶段或两者的组合。在示例性实施例中，增益压缩级和增益扩展级均被提供有复制电流偏置方案，以确保温度，过程和/或电源电压变化的稳定的偏置电流。进一步公开了一种用于设置直流输出电压以确保最大线性工作范围的输出电压偏置方案。

10. 发明授权

US08099127B2 Multi-mode configurable transmitter circuit 有权
标题翻译：多模式可配置发射机电路
公开(公告)号：US08099127B2
公开(公告)日：2012-01-17
申请号：US12184341
申请日：2008-08-01
申请人： Chiewcharn Narathong , Sankaran Aniruddhan
发明人： Chiewcharn Narathong , Sankaran Aniruddhan
IPC分类号： H04M1/00 , H04B1/04
CPC分类号： H04B1/0483 , H03F1/02 , H03F1/0277 , H03F3/195 , H03F3/211 , H03F3/24 , H03F3/245 , H03F3/68 , H03F3/72 , H03F2200/18 , H03F2200/27 , H03F2200/336 , H03F2200/411 , H03F2200/534 , H03F2203/21136 , H03F2203/7206 , H03F2203/7215 , H03F2203/7236 , H04B2001/045
摘要： Method and apparatus for configuring a transmitter circuit to support multiple modes and/or frequency bands. In an embodiment, a pre-driver amplifier (pDA) in a transmit (TX) signal path is selectively bypassed by a controllable switch. The switch can be controlled based on a mode of operation of the transmitter circuit. Further techniques are disclosed for selectively coupling the output of a driver amplifier (DA) to at least one of a plurality of off-chip connections, each connection coupling the DA output to a set of off-chip components.
摘要翻译：用于配置发射机电路以支持多个模式和/或频带的方法和装置。在一个实施例中，发射（TX）信号路径中的预驱动放大器（pDA）由可控开关选择性旁路。可以基于发射机电路的操作模式来控制开关。公开了用于选择性地将驱动器放大器（DA）的输出耦合到多个片外连接中的至少一个的其它技术，每个连接将DA输出耦合到一组片外部件。

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