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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。

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. 发明授权

US08270499B2 Receiver with balanced I/Q transformer 有权
标题翻译：接收器带有平衡I / Q变压器
公开(公告)号：US08270499B2
公开(公告)日：2012-09-18
申请号：US12467111
申请日：2009-05-15
申请人： Li-Chung Chang , Maulin P. Bhagat , Hanil Lee , Ravi Sridhara
发明人： Li-Chung Chang , Maulin P. Bhagat , Hanil Lee , Ravi Sridhara
IPC分类号： H04B3/00 , H04L27/00
CPC分类号： H03D7/1466 , H03D7/1458 , H03D7/165 , H03D2200/0082
摘要： A receiver with a balanced I/Q transformer is described. In an exemplary design, the receiver includes an LNA that amplifies a received RF signal and provides a single-ended RF signal to the balanced I/Q transformer. The balanced I/Q transformer includes at least one primary coil and first and second secondary coils. The first secondary coil is magnetically coupled to the at least one primary coil and provides a first differential RF signal to a first mixer. The second secondary coil is magnetically coupled to the at least one primary coil and provides a second differential RF signal to a second mixer. The first and second mixers downconvert the first and second differential RF signals with I and Q LO signals, respectively, and provide differential I and Q downconverted signals. The primary and secondary coils may be fabricated on two conductive layers of an integrated circuit.
摘要翻译：描述了具有平衡I / Q变压器的接收机。在示例性设计中，接收机包括放大接收到的RF信号的LNA，并向平衡I / Q变压器提供单端RF信号。平衡I / Q变压器包括至少一个初级线圈和第一和第二次级线圈。第一次级线圈磁耦合到至少一个初级线圈，并向第一混频器提供第一差分RF信号。第二次级线圈磁耦合到至少一个初级线圈，并向第二混频器提供第二差分RF信号。第一和第二混频器分别用I和Q LO信号下变频第一和第二差分RF信号，并提供差分I和Q下变频信号。初级和次级线圈可以制造在集成电路的两个导电层上。

7. 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。

8. 发明申请

US20110110463A1 RECEIVER WITH BALANCED I/Q TRANSFORMER 有权
标题翻译：接收器与平衡I / Q变压器
公开(公告)号：US20110110463A1
公开(公告)日：2011-05-12
申请号：US12467111
申请日：2009-05-15
申请人： Li-Chung Chang , Maulin P. Bhagat , Hanil Lee , Ravi Sridhara
发明人： Li-Chung Chang , Maulin P. Bhagat , Hanil Lee , Ravi Sridhara
IPC分类号： H04L27/00
CPC分类号： H03D7/1466 , H03D7/1458 , H03D7/165 , H03D2200/0082
摘要： A receiver with a balanced I/Q transformer is described. In an exemplary design, the receiver includes an LNA that amplifies a received RF signal and provides a single-ended RF signal to the balanced I/Q transformer. The balanced I/Q transformer includes at least one primary coil and first and second secondary coils. The first secondary coil is magnetically coupled to the at least one primary coil and provides a first differential RF signal to a first mixer. The second secondary coil is magnetically coupled to the at least one primary coil and provides a second differential RF signal to a second mixer. The first and second mixers downconvert the first and second differential RF signals with I and Q LO signals, respectively, and provide differential I and Q downconverted signals. The primary and secondary coils may be fabricated on two conductive layers of an integrated circuit.
摘要翻译：描述了具有平衡I / Q变压器的接收机。在示例性设计中，接收机包括放大接收到的RF信号的LNA，并向平衡I / Q变压器提供单端RF信号。平衡I / Q变压器包括至少一个初级线圈和第一和第二次级线圈。第一次级线圈磁耦合到至少一个初级线圈，并向第一混频器提供第一差分RF信号。第二次级线圈磁耦合到至少一个初级线圈，并向第二混频器提供第二差分RF信号。第一和第二混频器分别用I和Q LO信号下变频第一和第二差分RF信号，并提供差分I和Q下变频信号。初级和次级线圈可以制造在集成电路的两个导电层上。

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