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公开(公告)号：US20090315621A1
公开(公告)日：2009-12-24
申请号：US12143669
申请日：2008-06-20
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。
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公开(公告)号：US08035443B2
公开(公告)日：2011-10-11
申请号：US12143669
申请日：2008-06-20
IPC分类号： H03F1/14
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。
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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
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。
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公开(公告)号：US08599938B2
公开(公告)日：2013-12-03
申请号：US12277913
申请日：2008-11-25
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。
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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。
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公开(公告)号：US08099127B2
公开(公告)日：2012-01-17
申请号：US12184341
申请日：2008-08-01
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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公开(公告)号：US07863986B2
公开(公告)日：2011-01-04
申请号：US12189756
申请日：2008-08-11
IPC分类号： H03F3/04
CPC分类号： H03F1/565 , H03F1/42 , H03F3/195 , H03F3/245 , H03F3/72 , H03F2200/06 , H03F2200/294 , H03F2200/36 , H03F2200/451 , H03F2200/489 , H03F2200/534 , H03F2203/7203 , H03H7/42
摘要： Techniques for improving the quality factor (“Q”) of a balun in the presence of loading stages are disclosed. In an exemplary embodiment, the ground node of a balun secondary (single-ended) element is connected to a source node of an amplifier stage via a common ground node. The connection may be made physically short to minimize any parasitic elements. In another exemplary embodiment, the common ground node may be coupled to an off-chip ground voltage via a peaking inductor. The peaking inductor may be implemented on-chip, e.g., as a spiral inductor, or off-chip e.g., using bondwires.
摘要翻译： 披露了在负载阶段存在下改善平衡不平衡转换器的品质因数（“Q”）的技术。 在示例性实施例中，平衡不平衡变压器次级（单端）元件的接地节点通过公共接地节点连接到放大器级的源节点。 连接可以在物理上短，以最小化任何寄生元件。 在另一个示例性实施例中，公共接地节点可以经由峰值电感器耦合到片外接地电压。 峰值电感器可以在芯片上实现，例如作为螺旋电感器，或者例如使用键合线芯片来实现。
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公开(公告)号：US20100033253A1
公开(公告)日：2010-02-11
申请号：US12189756
申请日：2008-08-11
IPC分类号： H03F3/04
CPC分类号： H03F1/565 , H03F1/42 , H03F3/195 , H03F3/245 , H03F3/72 , H03F2200/06 , H03F2200/294 , H03F2200/36 , H03F2200/451 , H03F2200/489 , H03F2200/534 , H03F2203/7203 , H03H7/42
摘要： Techniques for improving the quality factor (“Q”) of a balun in the presence of loading stages are disclosed. In an exemplary embodiment, the ground node of a balun secondary (single-ended) element is connected to a source node of an amplifier stage via a common ground node. The connection may be made physically short to minimize any parasitic elements. In another exemplary embodiment, the common ground node may be coupled to an off-chip ground voltage via a peaking inductor. The peaking inductor may be implemented on-chip, e.g., as a spiral inductor, or off-chip e.g., using bondwires.
摘要翻译： 披露了在负载阶段存在下改善平衡不平衡转换器的品质因数（“Q”）的技术。 在示例性实施例中，平衡不平衡变压器次级（单端）元件的接地节点通过公共接地节点连接到放大器级的源节点。 连接可以在物理上短，以最小化任何寄生元件。 在另一个示例性实施例中，公共接地节点可以经由峰值电感器耦合到片外接地电压。 峰值电感器可以在芯片上实现，例如作为螺旋电感器，或者例如使用键合线芯片来实现。
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公开(公告)号：US20100029227A1
公开(公告)日：2010-02-04
申请号：US12184341
申请日：2008-08-01
IPC分类号： 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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公开(公告)号：US20090190692A1
公开(公告)日：2009-07-30
申请号：US12277913
申请日：2008-11-25
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。
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