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1. 发明申请

US20080014896A1 SYSTEMS, METHODS, AND APPARATUS FOR FREQUENCY CONVERSION 有权
标题翻译：用于频率转换的系统，方法和装置
公开(公告)号：US20080014896A1
公开(公告)日：2008-01-17
申请号：US11531314
申请日：2006-09-13
申请人： Wei Zhuo , Aristotele Hadjichristos , Gurkanwal S. Sahota , Solti Peng
发明人： Wei Zhuo , Aristotele Hadjichristos , Gurkanwal S. Sahota , Solti Peng
IPC分类号： H04B1/26
CPC分类号： H03D7/166 , H03H19/008 , H03H2007/0192
摘要： A method according to one embodiment includes using a quadrature set of local oscillator signals having duty cycles of substantially less than fifty percent to perform a mixing operation on a radio-frequency current signal. Other embodiments include using a quadrature set of local oscillator signals having duty cycles of less than twenty-five percent.
摘要翻译：根据一个实施例的方法包括使用具有基本上小于百分之五十的占空比的本地振荡器信号的正交组来对射频电流信号执行混频操作。其他实施例包括使用占空比小于百分之二十五的本地振荡器信号的正交集合。

2. 发明授权

US07826816B2 Systems, methods, and apparatus for frequency conversion 有权
标题翻译：用于频率转换的系统，方法和装置
公开(公告)号：US07826816B2
公开(公告)日：2010-11-02
申请号：US11531314
申请日：2006-09-13
申请人： Wei Zhuo , Aristotele Hadjichristos , Gurkanwal S. Sahota , Solti Peng
发明人： Wei Zhuo , Aristotele Hadjichristos , Gurkanwal S. Sahota , Solti Peng
IPC分类号： H04B1/26
CPC分类号： H03D7/166 , H03H19/008 , H03H2007/0192
摘要： A method according to one embodiment includes using a quadrature set of local oscillator signals having duty cycles of substantially less than fifty percent to perform a mixing operation on a radio-frequency current signal. Other embodiments include using a quadrature set of local oscillator signals having duty cycles of less than twenty-five percent.
摘要翻译：根据一个实施例的方法包括使用具有基本上小于百分之五十的占空比的本地振荡器信号的正交组来对射频电流信号执行混频操作。其他实施例包括使用占空比小于百分之二十五的本地振荡器信号的正交集合。

3. 发明授权

US09559639B2 Protection circuit for power amplifier 有权
标题翻译：功率放大器保护电路
公开(公告)号：US09559639B2
公开(公告)日：2017-01-31
申请号：US12715250
申请日：2010-03-01
申请人： Wenjun Su , Aristotele Hadjichristos , Gurkanwal S. Sahota , Marco Cassia
发明人： Wenjun Su , Aristotele Hadjichristos , Gurkanwal S. Sahota , Marco Cassia
IPC分类号： H04B1/04 , H03F1/52 , H03F3/24 , H03G3/30
CPC分类号： H03F1/52 , H03F3/24 , H03F2200/435 , H03F2200/78 , H03G3/3042 , H04B2001/0408
摘要： Techniques for protecting a power amplifier (PA) are described. In an exemplary design, an apparatus includes (i) a PA module to amplify an input RF signal and provide an output RF signal and (ii) a protection circuit to control a transmitter gain to protect the PA module against high peak voltage. In an exemplary design, the protection circuit includes a set of comparators to quantize an analog input signal and provide digital comparator output signals used to adjust the transmitter gain. In another exemplary design, the protection circuit reduces and increases the transmitter gain with hysteresis. In yet another exemplary design, the protection circuit has faster response to rising amplitude than falling amplitude of the output RF signal. The hysteresis and/or the different rise and fall responses may allow the protection circuit to avoid toggling the transmitter gain under severe load mismatch and to handle time-varying envelope due to amplitude modulation.
摘要翻译：描述了用于保护功率放大器（PA）的技术。在示例性设计中，装置包括（i）PA模块，用于放大输入RF信号并提供输出RF信号，以及（ii）保护电路以控制发射机增益以保护PA模块免受高峰值电压。在示例性设计中，保护电路包括一组比较器，用于量化模拟输入信号并提供用于调整发射机增益的数字比较器输出信号。在另一示例性设计中，保护电路通过滞后减小并增加发射机增益。在又一示例性设计中，保护电路比对输出RF信号的下降幅度具有对振幅上升的响应更快。迟滞和/或不同的上升和下降响应可以允许保护电路避免在严重负载不匹配的情况下切换发射机增益，并且由于幅度调制来处理时变包络。

4. 发明授权

US09450665B2 Diversity receiver for wireless communication 有权
标题翻译：用于无线通信的分集接收机
公开(公告)号：US09450665B2
公开(公告)日：2016-09-20
申请号：US11548596
申请日：2006-10-11
申请人： Wesley Alan Sampson , Aristotele Hadjichristos , Gurkanwal S Sahota
发明人： Wesley Alan Sampson , Aristotele Hadjichristos , Gurkanwal S Sahota
IPC分类号： H04B7/10 , H04B7/08 , H04W88/06
CPC分类号： H04B7/0822 , H04B1/006 , H04B7/0825 , H04B7/0831 , H04B7/0871 , H04W88/06
摘要： A diversity receiver capable of receiving a CDMA system (e.g., a W-CDMA system) and a TDMA system (e.g., a GSM system), with receive diversity for at least one system, is described. W-CDMA is often referred to as UMTS. In one design, the diversity receiver includes a first receiver for GSM and a second receiver for UMTS. The first receiver may be implemented with one receiver design, may be spec-compliant for GSM, and may also support UMTS. The second receiver may be implemented with another receiver design, may be spec-compliant for UMTS, and may also support GSM. The first receiver may include a lowpass filter having a bandwidth that is adjustable for GSM and UMTS. The second receiver may include a bandpass filter used to attenuate a transmit frequency range for UMTS. Each receiver may include circuit blocks that are used for both GSM and UMTS.
摘要翻译：描述了能够接收具有用于至少一个系统的接收分集的CDMA系统（例如，W-CDMA系统）和TDMA系统（例如，GSM系统）的分集接收机。 W-CDMA通常被称为UMTS。在一种设计中，分集接收机包括用于GSM的第一接收机和用于UMTS的第二接收机。第一接收机可以用一个接收机设计来实现，可以对GSM进行规范兼容，并且还可以支持UMTS。第二接收机可以用另一个接收机设计来实现，可以对UMTS进行规范兼容，并且还可以支持GSM。第一接收机可以包括具有可针对GSM和UMTS调整的带宽的低通滤波器。第二接收机可以包括用于衰减UMTS的发射频率范围的带通滤波器。每个接收机可以包括用于GSM和UMTS的电路块。

5. 发明授权

US08385854B2 Adaptive parametric power amplifier protection circuit 有权
标题翻译：自适应参数功率放大器保护电路
公开(公告)号：US08385854B2
公开(公告)日：2013-02-26
申请号：US12470418
申请日：2009-05-21
申请人： Aristotele Hadjichristos , Gurkanwal S. Sahota
发明人： Aristotele Hadjichristos , Gurkanwal S. Sahota
IPC分类号： H01Q11/12 , H04B1/04 , H03G3/10
CPC分类号： H04B1/0466 , H03F1/523 , H03F3/24 , H03F2200/447 , H03F2200/468
摘要： A device including a gain control element coupled prior to or within a radio frequency (RF) power amplifier (PA) with an adaptive parametric PA protection circuit is described. In an exemplary embodiment, the device includes a gain control element coupled prior to a radio frequency power amplifier with a power stage with corresponding transistor breakdown threshold values, having an adaptive parametric PA protection circuit configured to receive at least one power stage drain-source voltage parameter value, at least one power stage drain-gate voltage parameter value, and at least one power stage drain-source current parameter value, and including an adaptive parametric PA protection circuit having a first section for processing the parameter values and a second section for generating a gain correction signal to adjust the gain control element with optimal power added efficiency (PAE) for the power stage within the corresponding transistor breakdown threshold values.
摘要翻译：描述了在具有自适应参数PA保护电路的射频（RF）功率放大器（PA）之前或之内耦合的增益控制元件的装置。在示例性实施例中，该装置包括增益控制元件，该增益控制元件在具有相应晶体管击穿阈值的功率级的射频功率放大器之前耦合，具有自适应参数PA保护电路，该自适应参数PA保护电路被配置为接收至少一个功率级漏 - 源电压参数值，至少一个功率级漏极栅极电压参数值和至少一个功率级漏源电流参数值，并且包括具有用于处理参数值的第一部分的自适应参数PA保护电路和用于产生增益校正信号，以在相应的晶体管击穿阈值内对功率级的最佳功率附加效率（PAE）调节增益控制元件。

6. 发明申请

US20110043956A1 PROTECTION CIRCUIT FOR POWER AMPLIFIER 有权
标题翻译：功率放大器保护电路
公开(公告)号：US20110043956A1
公开(公告)日：2011-02-24
申请号：US12715250
申请日：2010-03-01
申请人： Wenjun Su , Aristotele Hadjichristos , Gurkanwal S. Sahota , Marco Cassia
发明人： Wenjun Su , Aristotele Hadjichristos , Gurkanwal S. Sahota , Marco Cassia
IPC分类号： H02H3/20
CPC分类号： H03F1/52 , H03F3/24 , H03F2200/435 , H03F2200/78 , H03G3/3042 , H04B2001/0408
摘要： Techniques for protecting a power amplifier (PA) are described. In an exemplary design, an apparatus includes (i) a PA module to amplify an input RF signal and provide an output RF signal and (ii) a protection circuit to control a transmitter gain to protect the PA module against high peak voltage. In an exemplary design, the protection circuit includes a set of comparators to quantize an analog input signal and provide digital comparator output signals used to adjust the transmitter gain. In another exemplary design, the protection circuit reduces and increases the transmitter gain with hysteresis. In yet another exemplary design, the protection circuit has faster response to rising amplitude than falling amplitude of the output RF signal. The hysteresis and/or the different rise and fall responses may allow the protection circuit to avoid toggling the transmitter gain under severe load mismatch and to handle time-varying envelope due to amplitude modulation.
摘要翻译：描述了用于保护功率放大器（PA）的技术。在示例性设计中，装置包括（i）PA模块，用于放大输入RF信号并提供输出RF信号，以及（ii）保护电路以控制发射机增益以保护PA模块免受高峰值电压。在示例性设计中，保护电路包括一组比较器，用于量化模拟输入信号并提供用于调整发射机增益的数字比较器输出信号。在另一示例性设计中，保护电路通过滞后减小并增加发射机增益。在又一示例性设计中，保护电路比对输出RF信号的下降幅度具有对振幅上升的响应更快。迟滞和/或不同的上升和下降响应可以允许保护电路避免在严重负载不匹配的情况下切换发射机增益，并且由于幅度调制来处理时变包络。

7. 发明授权

US08472890B2 Adjustable local oscillator path in a communication device with a transmitter 有权
标题翻译：具有发射机的通信设备中的可调本地振荡器路径
公开(公告)号：US08472890B2
公开(公告)日：2013-06-25
申请号：US11947597
申请日：2007-11-29
申请人： Wei Zhuo , Aristotele Hadjichristos , Tzu-wang Pan
发明人： Wei Zhuo , Aristotele Hadjichristos , Tzu-wang Pan
IPC分类号： H04B1/40
CPC分类号： H04B1/109 , H04B1/525
摘要： A communication device includes a transmitter and a receiver. The receiver mixes a local oscillator (LO) signal with the received signal to downconvert the received signal to an intermediate frequency (IF). The LO path that feeds the LO signal to the downconverting mixer is controlled based on the transmit power of the transmitter. For high transmit power, the drive of the LO path is increased, thereby increasing the signal-to-noise ratio of the LO signal input into the mixer. For low transmit power levels, the drive to the LO path is decreased, reducing power consumption in the communication device. In this way, receiver path noise due to mixing of the LO phase noise with the self-generated transmitter signal is selectively controlled while incurring lower power consumption penalty. The communication device may be an access terminal configured for communication with a cellular radio network.
摘要翻译：通信设备包括发射机和接收机。接收器将本地振荡器（LO）信号与接收到的信号混合，以将接收到的信号下变频到中频（IF）。基于发射机的发射功率来控制将LO信号馈送到下变频混频器的LO路径。对于高发射功率，LO路径的驱动增加，从而增加输入混频器的LO信号的信噪比。对于低发射功率电平，降低LO路径的驱动，从而降低通信设备的功耗。以这种方式，由于LO相位噪声与自发送发射机信号的混合引起的接收机路径噪声被选择性地控制，同时产生较低的功耗损失。通信设备可以是被配置为与蜂窝无线电网络进行通信的接入终端。

8. 发明申请

US20090130994A1 ADJUSTABLE LOCAL OSCILLATOR PATH IN A COMMUNICATION DEVICE WITH A TRANSMITTER 有权
标题翻译：在具有发射机的通信设备中可调谐的本地振荡器路径
公开(公告)号：US20090130994A1
公开(公告)日：2009-05-21
申请号：US11947597
申请日：2007-11-29
申请人： Wei Zhuo , Aristotele Hadjichristos , Tzu-wang Pan
发明人： Wei Zhuo , Aristotele Hadjichristos , Tzu-wang Pan
IPC分类号： H04B1/40 , H04B1/04
CPC分类号： H04B1/109 , H04B1/525
摘要： A communication device includes a transmitter and a receiver. The receiver mixes a local oscillator (LO) signal with the received signal to downconvert the received signal to an intermediate frequency (IF). The LO path that feeds the LO signal to the downconverting mixer is controlled based on the transmit power of the transmitter. For high transmit power, the drive of the LO path is increased, thereby increasing the signal-to-noise ratio of the LO signal input into the mixer. For low transmit power levels, the drive to the LO path is decreased, reducing power consumption in the communication device. In this way, receiver path noise due to mixing of the LO phase noise with the self-generated transmitter signal is selectively controlled while incurring lower power consumption penalty. The communication device may be an access terminal configured for communication with a cellular radio network.
摘要翻译：通信设备包括发射机和接收机。接收器将本地振荡器（LO）信号与接收到的信号混合，以将接收到的信号下变频到中频（IF）。基于发射机的发射功率来控制将LO信号馈送到下变频混频器的LO路径。对于高发射功率，LO路径的驱动增加，从而增加输入混频器的LO信号的信噪比。对于低发射功率电平，降低LO路径的驱动，从而降低通信设备的功耗。以这种方式，由于LO相位噪声与自发送发射机信号的混合引起的接收机路径噪声被选择性地控制，同时产生较低的功耗损失。通信设备可以是被配置为与蜂窝无线电网络进行通信的接入终端。

9. 发明授权

US09000847B2 Digital tunable inter-stage matching circuit 有权
标题翻译：数字可调谐级间匹配电路
公开(公告)号：US09000847B2
公开(公告)日：2015-04-07
申请号：US13226397
申请日：2011-09-06
申请人： Yu Zhao , Babak Nejati , Nathan M Pletcher , Aristotele Hadjichristos
发明人： Yu Zhao , Babak Nejati , Nathan M Pletcher , Aristotele Hadjichristos
IPC分类号： H03F3/04 , H03H7/40 , H03F1/22 , H03F1/42 , H03F3/193
CPC分类号： H03F1/42 , H03F1/223 , H03F3/193 , H03F2200/318 , H03H7/40
摘要： A tunable inter-stage matching circuit that can improve performance is described. In an exemplary design, an apparatus comprises a driver amplifier and a power amplifier. The apparatus may further include an inter-stage matching circuit tunable in discrete steps for matching impedances between the driver amplifier and the power amplifier. The tunable inter-stage matching circuit may include a bank of capacitors, each capacitor of the bank coupled in series with a switch for coupling the capacitor to a ground voltage.
摘要翻译：描述了可以提高性能的可调谐级间匹配电路。在示例性设计中，装置包括驱动器放大器和功率放大器。该装置还可以包括可以在离散步骤中调节的级间匹配电路，用于匹配驱动器放大器和功率放大器之间的阻抗。可调谐级间匹配电路可以包括一组电容器，该组的每个电容器与用于将电容器耦合到接地电压的开关串联耦合。

10. 发明授权

US08633777B2 Methods and apparatus for inductors with integrated passive and active elements 有权
标题翻译：具有集成无源和有源元件的电感器的方法和装置
公开(公告)号：US08633777B2
公开(公告)日：2014-01-21
申请号：US12628502
申请日：2009-12-01
申请人： Zhang Jin , Aristotele Hadjichristos , Ockgoo Lee , Hongyan Yan , Guy Klemens , Maulin P. Bhagat , Thomas Myers , Norman L. Frederick , Junxiong Deng , Aleksandar Tasic , Bhushan S. Asuri , Mohammad Farazian
发明人： Zhang Jin , Aristotele Hadjichristos , Ockgoo Lee , Hongyan Yan , Guy Klemens , Maulin P. Bhagat , Thomas Myers , Norman L. Frederick , Junxiong Deng , Aleksandar Tasic , Bhushan S. Asuri , Mohammad Farazian
IPC分类号： H03B1/00
CPC分类号： H01L25/16 , H01F17/0006 , H01F27/40 , H01L23/645 , H01L2924/0002 , H01L2924/00
摘要： An integrated circuit is described. The integrated circuit includes an inductor that has a large empty area in the center of the inductor. The integrated circuit also includes additional circuitry. The additional circuitry is located within the large empty area in the center of the inductor. The additional circuitry may include a capacitor bank, transistors, electrostatic discharge (ESD) protection circuitry and other miscellaneous passive or active circuits.
摘要翻译：描述了集成电路。集成电路包括在电感器中心具有大的空白区域的电感器。集成电路还包括附加电路。附加电路位于电感器中心的大空区域内。附加电路可以包括电容器组，晶体管，静电放电（ESD）保护电路和其它各种无源或有源电路。

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