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1. 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。

2. 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。

3. 发明申请

US20110316637A1 AMPLIFIER MODULE WITH MULTIPLE OPERATING MODES 有权
标题翻译：具有多种操作模式的放大器模块
公开(公告)号：US20110316637A1
公开(公告)日：2011-12-29
申请号：US13226400
申请日：2011-09-06
申请人： Nathan M. Pletcher , Aristotele Hadjichristos , Babak Nejati
发明人： Nathan M. Pletcher , Aristotele Hadjichristos , Babak Nejati
IPC分类号： H03F3/04
CPC分类号： H03F1/0277 , H03F1/56 , H03F3/195 , H03F3/211 , H03F3/245 , H03F3/72 , H03F2200/222 , H03F2200/27 , H03F2200/318 , H03F2200/387 , H03F2200/411 , H03F2200/451 , H03F2200/522 , H03F2200/75 , H03F2203/21136 , H03F2203/21139 , H03F2203/21142 , H03F2203/21157 , H03F2203/21175 , H03F2203/21196 , H03F2203/7206 , H03F2203/7236 , H03G1/0088
摘要： An amplifier module with multiple operating modes is described. In an exemplary design, an apparatus includes a plurality of amplifiers. The apparatus may also include a plurality of switches, each switch coupled to an output of an associated amplifier in the plurality of amplifiers and configured to provide an amplified signal in a first mode and bypass the associated amplifier and provide an associated bypass signal in a second mode. Further, the apparatus may include an output circuit including a plurality of matching circuits, each matching circuit coupled to an associated amplifier in the plurality of amplifiers and an associated switch in the plurality of switches.
摘要翻译：描述具有多种工作模式的放大器模块。在示例性设计中，装置包括多个放大器。该装置还可以包括多个开关，每个开关耦合到多个放大器中的相关联的放大器的输出，并且被配置为以第一模式提供放大的信号并且旁路相关的放大器并在第二模式中提供相关的旁路信号模式。此外，该装置可以包括包括多个匹配电路的输出电路，每个匹配电路耦合到多个放大器中的相关联的放大器以及多个开关中的关联开关。

4. 发明申请

US20110316636A1 DIGITAL TUNABLE INTER-STAGE MATCHING CIRCUIT 有权
标题翻译：数字可调节间歇匹配电路
公开(公告)号：US20110316636A1
公开(公告)日：2011-12-29
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： H03H11/28 , H03F3/04
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。

5. 发明申请

US20110037516A1 MULTI-STAGE IMPEDANCE MATCHING 有权
标题翻译：多级阻抗匹配
公开(公告)号：US20110037516A1
公开(公告)日：2011-02-17
申请号：US12641228
申请日：2009-12-17
申请人： Babak Nejati , Yu Zhao , Nathan M. Pletcher , Aristotele Hadjichristos , Puay Hoe See
发明人： Babak Nejati , Yu Zhao , Nathan M. Pletcher , Aristotele Hadjichristos , Puay Hoe See
IPC分类号： H03F3/68
CPC分类号： H03F1/565 , H03F3/211 , H03F3/72
摘要： Exemplary techniques for performing impedance matching are described. In an exemplary embodiment, the apparatus may include an amplifier (e.g., a power amplifier) coupled to first and second matching circuits. The first matching circuit may include multiple stages coupled to a first node and may provide input impedance matching for the amplifier. The second matching circuit may include multiple stages coupled to a second node and may provide output impedance matching for the amplifier. At least one switch may be coupled between the first and second nodes and may bypass or select the amplifier. The first and second nodes may have a common impedance. The apparatus may further include a second amplifier coupled in parallel with the amplifier and further to the matching circuits. The second matching circuit may include a first input stage coupled to the amplifier, a second input stage coupled to the second amplifier, and a second stage coupled to the two input stages via switches.
摘要翻译：描述了用于执行阻抗匹配的示例性技术。在示例性实施例中，该装置可以包括耦合到第一和第二匹配电路的放大器（例如，功率放大器）。第一匹配电路可以包括耦合到第一节点的多个级并且可以为放大器提供输入阻抗匹配。第二匹配电路可以包括耦合到第二节点的多个级并且可以为放大器提供输出阻抗匹配。至少一个开关可以耦合在第一和第二节点之间，并且可以旁路或选择放大器。第一和第二节点可以具有公共阻抗。该装置还可以包括与放大器并联并且进一步耦合到匹配电路的第二放大器。第二匹配电路可以包括耦合到放大器的第一输入级，耦合到第二放大器的第二输入级，以及经由开关耦合到两个输入级的第二级。

6. 发明申请

US20110032035A1 AMPLIFIER MODULE WITH MULTIPLE OPERATING MODES 有权
标题翻译：具有多种操作模式的放大器模块
公开(公告)号：US20110032035A1
公开(公告)日：2011-02-10
申请号：US12757679
申请日：2010-04-09
申请人： Nathan M. Pletcher , Aristotele Hadjichristos , Babak Nejati
发明人： Nathan M. Pletcher , Aristotele Hadjichristos , Babak Nejati
IPC分类号： H03F3/16 , H03F1/00 , H03F3/68
CPC分类号： H03F1/0277 , H03F1/56 , H03F3/195 , H03F3/211 , H03F3/245 , H03F3/72 , H03F2200/222 , H03F2200/27 , H03F2200/318 , H03F2200/387 , H03F2200/411 , H03F2200/451 , H03F2200/522 , H03F2200/75 , H03F2203/21136 , H03F2203/21139 , H03F2203/21142 , H03F2203/21157 , H03F2203/21175 , H03F2203/21196 , H03F2203/7206 , H03F2203/7236 , H03G1/0088
摘要： An amplifier module with multiple operating modes is described. In an exemplary design, the amplifier module includes an amplifier (e.g., a power amplifier), a switch, and an output circuit. The amplifier receives and amplifies an input signal and provides an amplified signal in a first mode. The switch is coupled to the output of the amplifier and bypasses the amplifier and provides a bypass signal in a second mode. The output circuit is coupled to the amplifier and the switch. The output circuit performs output impedance matching for the amplifier in the first mode. The output circuit also (i) receives the amplified signal and provides an output signal in the first mode and (ii) receives the bypass signal and provides the output signal in the second mode. The amplifier is enabled in the first mode and disabled in the second mode.
摘要翻译：描述具有多种工作模式的放大器模块。在示例性设计中，放大器模块包括放大器（例如，功率放大器），开关和输出电路。放大器接收并放大输入信号并在第一模式中提供放大的信号。开关耦合到放大器的输出端，并且旁路放大器并在第二模式中提供旁路信号。输出电路耦合到放大器和开关。输出电路在第一模式下对放大器执行输出阻抗匹配。输出电路还（i）接收放大的信号并在第一模式中提供输出信号，并且（ii）接收旁路信号并在第二模式中提供输出信号。放大器在第一种模式下使能，在第二种模式下禁用。

7. 发明授权

US06738432B2 System and method for RF signal amplification 有权
标题翻译： RF信号放大的系统和方法
公开(公告)号：US06738432B2
公开(公告)日：2004-05-18
申请号：US09813741
申请日：2001-03-21
申请人： David R. Pehlke , Aristotele Hadjichristos
发明人： David R. Pehlke , Aristotele Hadjichristos
IPC分类号： H04L2704
CPC分类号： H03F1/0222 , H03F1/0277 , H03F2200/331 , H03F2200/504
摘要： A branched power amplifier circuit includes two or more amplifier segments or branches, each with a corresponding lossy modulator. The branched power amplifier may be dynamically resized by enabling different ones of its branches, to deliver peak efficiency at a number of different amplifier output power levels. Each amplifier branch operates in a saturated mode and selectively amplifies an RF input signal. The lossy modulators provide either supply voltage or supply current modulation to corresponding amplifier branches, thus imparting highly linear amplitude modulation to the overall output signal generated by branched power amplifier, despite its saturated mode operation. The branched power amplifier circuit may be configured such that particular combinations of segments have peak efficiencies matched to the needs of one or more air interface standards used in wireless mobile communication systems.
摘要翻译：分支功率放大器电路包括两个或更多个放大器段或分支，每个具有相应的有损调制器。分支功率放大器可以通过使其不同的分支动态地调整大小，以在多个不同的放大器输出功率电平上提供峰值效率。每个放大器分支工作在饱和模式，并有选择地放大RF输入信号。有损调制器为相应的放大器分支提供电源电压或电源电流调制，从而对分支功率放大器产生的总体输出信号赋予高度线性的幅度调制，尽管其饱和模式操作。分支功率放大器电路可以被配置为使得段的特定组合具有与在无线移动通信系统中使用的一个或多个空中接口标准的需要相匹配的峰值效率。

8. 发明授权

US6078219A Wide range single stage variable gain amplifier 有权
标题翻译：宽范围单级可变增益放大器
公开(公告)号：US6078219A
公开(公告)日：2000-06-20
申请号：US181361
申请日：1998-10-28
申请人： Aristotele Hadjichristos , Scott R. Justice
发明人： Aristotele Hadjichristos , Scott R. Justice
IPC分类号： H03G1/00 , H03F3/45
CPC分类号： H03G1/0023
摘要： A wide range single stage variable gain amplifier is provided for receiving an input signal and outputting an amplitude varied version of the received input signal. In its most basic form, the wide range single stage variable gain amplifier includes an input circuit receiving an input signal and developing an input current, a first control circuit receiving the input current, the first control circuit being selectively controllable to output an attenuated version of the received input current, a second control circuit directly connected to the first control circuit for receiving the attenuated input current therefrom, the second control circuit being selectively controllable to output a further attenuated version of the attenuated input current, and an output circuit receiving the further attenuated input current and developing an amplitude varied version of the received input signal.
摘要翻译：提供宽范围的单级可变增益放大器，用于接收输入信号并输出所接收的输入信号的幅度变化版本。在其最基本的形式中，宽范围的单级可变增益放大器包括接收输入信号和显影输入电流的输入电路，接收输入电流的第一控制电路，第一控制电路被选择性地控制以输出衰减版本所接收的输入电流，直接连接到第一控制电路的第二控制电路，用于从其接收衰减的输入电流，第二控制电路是可选择的可控制的，以输出衰减的输入电流的进一步的衰减版本;以及输出电路，衰减的输入电流并且形成接收到的输入信号的幅度变化的版本。

9. 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。

10. 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。

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