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公开(公告)号：US07471142B2
公开(公告)日：2008-12-30
申请号：US11430575
申请日：2006-05-09
申请人： Qiang (Tom) Li , Hooman Darabi
发明人： Qiang (Tom) Li , Hooman Darabi
IPC分类号： H03B1/00
CPC分类号： H03H11/0472 , H03F3/72 , H03F2200/381 , H03F2203/7221 , H03H11/0444 , H03H11/52 , H03H2210/025 , H03H2210/036 , H03H2210/04
摘要： Various embodiments are disclosed relating filter calibration with cell re-use. According to an example embodiment, an apparatus includes a first circuit, including a variable circuit element. The first circuit is adapted to output an output frequency signal during a calibration mode and to operate as a filter during a filter mode. A control circuit is coupled to the first circuit and is adapted to receive a reference frequency signal and to calibrate the first circuit by adjusting the variable circuit element based on the reference frequency signal and the output frequency signal during the calibration mode. The calibrated first circuit is configured to then operate as a filter during the filter mode.
摘要翻译： 公开了关于过滤器校准与细胞再利用的各种实施例。 根据示例实施例，一种装置包括包括可变电路元件的第一电路。 第一电路适于在校准模式期间输出输出频率信号，并且在滤波器模式期间用作滤波器。 控制电路耦合到第一电路，并且适于接收参考频率信号并且通过在校准模式期间基于参考频率信号和输出频率信号调整可变电路元件来校准第一电路。 校准的第一电路被配置为在滤波器模式期间作为滤波器工作。
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公开(公告)号：US07826565B2
公开(公告)日：2010-11-02
申请号：US12464156
申请日：2009-05-12
申请人： Qiang (Tom) Li , Hooman Darabi
发明人： Qiang (Tom) Li , Hooman Darabi
CPC分类号： H03H11/1291
摘要： A multiple stage band pass filter of a Radio Frequency (RF) Integrated Circuit is provided with a low pass mixer output filter coupled to receive a down sampled analog information signal, a buffer coupled to an output of the low pass mixer output filter, a low pass buffer output filter coupled to an output of the buffer and a plurality of band pass filters coupled to an output of the low pass buffer output filter.
摘要翻译： 射频（RF）集成电路的多级带通滤波器被提供有低通混频器输出滤波器，其被耦合以接收下采样的模拟信息信号，耦合到低通混频器输出滤波器的输出的缓冲器，低 耦合到缓冲器的输出的多通道缓冲器输出滤波器以及耦合到低通缓冲器输出滤波器的输出的多个带通滤波器。
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公开(公告)号：US20090221260A1
公开(公告)日：2009-09-03
申请号：US12464156
申请日：2009-05-12
申请人： Qiang (Tom) Li , Hooman Darabi
发明人： Qiang (Tom) Li , Hooman Darabi
CPC分类号： H03H11/1291
摘要： A multiple stage band pass filter of a Radio Frequency (RF) Integrated Circuit is provided with a low pass mixer output filter coupled to receive a down sampled analog information signal, a buffer coupled to an output of the low pass mixer output filter, a low pass buffer output filter coupled to an output of the buffer and a plurality of band pass filters coupled to an output of the low pass buffer output filter.
摘要翻译： 射频（RF）集成电路的多级带通滤波器设置有低通混频器输出滤波器，耦合以接收下采样的模拟信息信号，耦合到低通混频器输出滤波器的输出的缓冲器，低 耦合到缓冲器的输出的多通道缓冲器输出滤波器以及耦合到低通缓冲器输出滤波器的输出的多个带通滤波器。
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公开(公告)号：US08064867B2
公开(公告)日：2011-11-22
申请号：US12136706
申请日：2008-06-10
申请人： Qiang (Tom) Li , Hooman Darabi
发明人： Qiang (Tom) Li , Hooman Darabi
CPC分类号： H04B1/0071
摘要： A dual-band input transceiver block is formed to operably receive one of a 2.4 GHz radio frequency signal or a 5.0 GHz radio frequency transceiver signal in a manner that minimizes duplication of circuitry and creates a combined circuit path for RF front end input stages for much of the input stage. More specifically, the embodiments of the present invention include separate amplification and mixing stages whose outputs are combined by a stabilized load with circuitry for removing a common mode feedback signal. As such, downstream components, such as amplifiers, filters, analog-to-digital converters, and other input path circuit elements, are not duplicated and may be used regardless of whether the dual-band transceiver is operating in a first or second frequency band. Operation is, in the described embodiment, only one frequency input at a time though the invention is not limited to such operation. More specifically, a first input section is operably coupled to receive a first local oscillation input and a first frequency band signal input. A second input section is coupled to receive a second local oscillation input and a second frequency band signal input. Outputs of the first and second input sections are produced to a stabilized load with a common mode feedback block for removing a common mode feedback signal. As such, an output signal is produced having a regulated DC level and having any common mode feedback signal eliminated there from.
摘要翻译： 双波段输入收发器模块被形成为以最小化电路复制的方式可操作地接收2.4GHz射频信号或5.0GHz射频收发器信号中的一个，并为RF前端输入级创建多个组合电路路径 的输入级。 更具体地，本发明的实施例包括单独的放大和混合级，其输出通过稳定的负载与用于去除共模反馈信号的电路组合。 因此，诸如放大器，滤波器，模数转换器和其它输入路径电路元件的下游部件不被复制，并且可以被使用，而不管双频带收发器是工作在第一或第二频带 。 在所描述的实施例中，操作是一次只输入一个频率，尽管本发明不限于此。 更具体地，第一输入部分可操作地耦合以接收第一本地振荡输入和第一频带信号输入。 第二输入部分被耦合以接收第二本地振荡输入和第二频带信号输入。 第一和第二输入部分的输出通过用于去除共模反馈信号的共模反馈块产生到稳定的负载。 因此，产生具有调节的DC电平并且从那里消除任何共模反馈信号的输出信号。
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公开(公告)号：US07386290B2
公开(公告)日：2008-06-10
申请号：US10922531
申请日：2004-08-20
申请人： Qiang (Tom) Li , Hooman Darabi
发明人： Qiang (Tom) Li , Hooman Darabi
CPC分类号： H04B1/0071
摘要： A dual-band input transceiver block is formed to operably receive one of a 2.4 GHz radio frequency signal or a 5.0 GHz radio frequency transceiver signal in a manner that minimizes duplication of circuitry and creates a combined circuit path for RF front end input stages for much of the input stage. The embodiments include separate amplification and mixing stages whose outputs are combined by a stabilized load with circuitry for removing a common mode feedback signal. A first input section is operably coupled to receive a first local oscillation input and a first frequency band signal input. A second input section is coupled to receive a second local oscillation input and a second frequency band signal input. Outputs of the first and second input sections are produced to a stabilized load with a common mode feedback block for removing a common mode feedback signal.
摘要翻译： 双波段输入收发器模块被形成为以最小化电路复制的方式可操作地接收2.4GHz射频信号或5.0GHz射频收发器信号中的一个，并为RF前端输入级创建多个组合电路路径 的输入级。 这些实施例包括单独的放大和混合级，其输出通过稳定的负载与用于去除共模反馈信号的电路组合。 第一输入部分可操作地耦合以接收第一本地振荡输入和第一频带信号输入。 第二输入部分被耦合以接收第二本地振荡输入和第二频带信号输入。 第一和第二输入部分的输出通过用于去除共模反馈信号的共模反馈块产生到稳定的负载。
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6.发明申请Off-Chip LC Circuit for Lowest Ground and VDD Impedance for Power Amplifier 有权用于功率放大器的最低接地和VDD阻抗的片外LC电路公开(公告)号：US20070080736A1
公开(公告)日：2007-04-12
申请号：US11539674
申请日：2006-10-09
申请人： Jesus Castaneda , Qiang (Tom) Li
发明人： Jesus Castaneda , Qiang (Tom) Li
IPC分类号： H03H11/26
CPC分类号： H03F1/565 , H03F3/195 , H03F3/24 , H03F2200/09 , H03F2200/294 , H03F2200/372 , H03H7/38
摘要： Off-chip LC circuit for lowest ground and VDD impedance for power amplifier. A novel approach is made by which a chip to PCB (Printer Circuit Board) interface may be made such that the ground and VDD potential levels are effectively brought onto the die of the chip such that a true ground potential is maintained within the chip. This off-chip LC circuit operates cooperatively with an on-chip decoupling capacitor to reduce the overall effective inductance of the bond wires employed to bring signal and voltage levels from the die to the chip exterior. This circuit ensures a relatively low impedance for a PA (Power Amplifier) that is implemented within chip thereby providing for improved performance.
摘要翻译： 用于功率放大器的最低接地和VDD阻抗的片外LC电路。 可以制造一种新颖的方法，通过其可以制造芯片到PCB（打印机电路板）接口，使得接地和VDD电位有效地被带到芯片的管芯上，使得在芯片内保持真实的接地电位。 该片外LC电路与片上去耦电容协同工作，以减少用于将信号和电压电平从模具外部输送到芯片外部的接合线的整体有效电感。 该电路确保在芯片内实现的PA（功率放大器）具有相对低的阻抗，从而提供改进的性能。
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公开(公告)号：US07894778B2
公开(公告)日：2011-02-22
申请号：US11478667
申请日：2006-06-30
申请人： Qiang (Tom) Li
发明人： Qiang (Tom) Li
IPC分类号： H04B1/40
CPC分类号： H04B1/0082 , H03B19/00
摘要： According to an example embodiment, an apparatus is provided in a wireless transceiver. The apparatus may include a circuit configured to generate a first frequency signal (e.g., a VCO signal). A local oscillator (LO) generator may be provided that includes a frequency divider to divide the first frequency signal, and an image rejection mixer configured to mix the first frequency signal with an output of the frequency divider to generate an LO signal. In this manner, the LO generator may generate a desired LO signal while substantially rejecting or suppressing an unwanted sideband or image signal, according to an example embodiment.
摘要翻译： 根据示例实施例，在无线收发器中提供一种装置。 该装置可以包括被配置为产生第一频率信号（例如，VCO信号）的电路。 可以提供本地振荡器（LO）发生器，其包括用于分频第一频率信号的分频器和被配置为将第一频率信号与分频器的输出混合以产生LO信号的镜像抑制混频器。 以这种方式，根据示例实施例，LO发生器可以产生期望的LO信号，同时基本上拒绝或抑制不期望的边带或图像信号。
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8.发明授权Off-chip LC circuit for lowest ground and VDD impedance for power amplifier 有权用于功率放大器的最低接地和VDD阻抗的片外LC电路公开(公告)号：US07321273B2
公开(公告)日：2008-01-22
申请号：US11539674
申请日：2006-10-09
IPC分类号： H03F3/191
CPC分类号： H03F1/565 , H03F3/195 , H03F3/24 , H03F2200/09 , H03F2200/294 , H03F2200/372 , H03H7/38
摘要： Off-chip LC circuit for lowest ground and VDD impedance for power amplifier. A novel approach is made by which a chip to PCB (Printer Circuit Board) interface may be made such that the ground and VDD potential levels are effectively brought onto the die of the chip such that a true ground potential is maintained within the chip. This off-chip LC circuit operates cooperatively with an on-chip decoupling capacitor to reduce the overall effective inductance of the bond wires employed to bring signal and voltage levels from the die to the chip exterior. This circuit ensures a relatively low impedance for a PA (Power Amplifier) that is implemented within chip thereby providing for improved performance.
摘要翻译： 用于功率放大器的最低接地和VDD阻抗的片外LC电路。 可以制造一种新颖的方法，通过其可以制造芯片到PCB（打印机电路板）接口，使得接地和VDD电位有效地被带到芯片的管芯上，使得在芯片内保持真实的接地电位。 该片外LC电路与片上去耦电容协同工作，以减少用于将信号和电压电平从模具外部输送到芯片外部的接合线的整体有效电感。 该电路确保在芯片内实现的PA（功率放大器）具有相对低的阻抗，从而提供改进的性能。
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9.发明授权Off-chip LC circuit for lowest ground and VDD impedance for power amplifier 失效用于功率放大器的最低接地和VDD阻抗的片外LC电路公开(公告)号：US07119631B2
公开(公告)日：2006-10-10
申请号：US10844237
申请日：2004-05-12
IPC分类号： H03H7/38
CPC分类号： H03F1/565 , H03F3/195 , H03F3/24 , H03F2200/09 , H03F2200/294 , H03F2200/372 , H03H7/38
摘要： Off-chip LC circuit for lowest ground and VDD impedance for power amplifier. A novel approach is made by which a chip to PCB (Printer Circuit Board) interface may be made such that the ground and VDD potential levels are effectively brought onto the die of the chip such that a true ground potential is maintained within the chip. This off-chip LC circuit operates cooperatively with an on-chip decoupling capacitor to reduce the overall effective inductance of the bond wires employed to bring signal and voltage levels from the die to the chip exterior. This circuit ensures a relatively low impedance for a PA (Power Amplifier) that is implemented within chip thereby providing for improved performance.
摘要翻译： 用于功率放大器的最低接地和VDD阻抗的片外LC电路。 可以制造一种新颖的方法，通过其可以制造芯片到PCB（打印机电路板）接口，使得接地和VDD电位有效地被带到芯片的管芯上，使得在芯片内保持真实的接地电位。 该片外LC电路与片上去耦电容协同工作，以减少用于将信号和电压电平从模具外部输送到芯片外部的接合线的整体有效电感。 该电路确保在芯片内实现的PA（功率放大器）具有相对低的阻抗，从而提供改进的性能。
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公开(公告)号：US20050208901A1
公开(公告)日：2005-09-22
申请号：US10852470
申请日：2004-05-24
申请人： Janice Chiu , Shahla Khorram , Qiang (Tom) Li
发明人： Janice Chiu , Shahla Khorram , Qiang (Tom) Li
摘要： A transceiver front end includes a transmit/receive (T/R) switch, a first balun, a second balun, a low noise amplifier, a power amplifier, and compensation circuitry. The T/R switch is operably coupled to an antenna for receiving inbound radio frequency (RF) signals and for transmitting outbound RF signals. The first balun includes a single ended winding and a differential winding, where the single ended winding is operably coupled to the T/R switch. The second balun includes a single ended winding and a differential winding, where the single ended winding is operably coupled to the T/R switch. The low noise amplifier is operably coupled the differential winding of the first balun. The power amplifier is operably coupled to the differential winding of the second balun. The compensation circuitry is operably coupled to the first balun to compensate for at least one of phase imbalance, amplitude imbalance, and impedance imbalance of the first balun.
摘要翻译： 收发器前端包括发射/接收（T / R）开关，第一平衡 - 不平衡转换器，第二平衡 - 不平衡转换器，低噪声放大器，功率放大器和补偿电路。 T / R开关可操作地耦合到天线，用于接收入站射频（RF）信号和用于发送出站RF信号。 第一个平衡 - 不平衡变压器包括单端绕组和差动绕组，其中单端绕组可操作地耦合到T / R开关。 第二平衡 - 不平衡变压器包括单端绕组和差动绕组，其中单端绕组可操作地耦合到T / R开关。 低噪声放大器可操作地耦合第一平衡 - 不平衡变换器的差动绕组。 功率放大器可操作地耦合到第二巴伦的差动绕组。 补偿电路可操作地耦合到第一平衡 - 不平衡变换器，以补偿第一平衡 - 不平衡变换器的相位不平衡，幅度不平衡和阻抗不平衡中的至少一个。
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