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71. 发明授权

US07639069B2 Tunable balanced loss compensation in an electronic filter 有权
标题翻译：电子滤波器可调谐平衡损耗补偿
公开(公告)号：US07639069B2
公开(公告)日：2009-12-29
申请号：US12151699
申请日：2008-05-08
申请人： Shaorui Li , John Thomas Bayruns
发明人： Shaorui Li , John Thomas Bayruns
IPC分类号： H03B1/00
CPC分类号： H03H11/1291 , H03H11/04
摘要： The invention provides a system for providing tunable balanced loss compensation in an electronic filter. Tunable balanced loss compensation is provided by using cross-connected balanced transconductors and self-connected balanced transconductors. The cross-connected balanced transconductors and the self-connected transconductors compensate the unbalanced loss across the electronic filter. The self-connected balanced transconductors compensate the balanced loss across the electronic filter. Further, the cross-connected and the self-connected balanced transconductors are tunable by adjusting the values of their transconductances, thereby providing tunable balanced loss compensation.
摘要翻译：本发明提供一种用于在电子滤波器中提供可调平衡损耗补偿的系统。可调平衡损耗补偿通过使用交叉连接的平衡跨导和自连接平衡跨导器来提供。交叉连接的平衡跨导体和自连接的跨导体补偿电子滤波器上的不平衡损耗。自连接平衡跨导器补偿电子滤波器的平衡损耗。此外，交叉连接和自连接的平衡跨导体可以通过调整它们的跨导值来调节，从而提供可调谐的平衡损耗补偿。

72. 发明授权

US07545218B1 Device and method for power amplifier noise reduction 有权
标题翻译：用于功率放大器降噪的装置和方法
公开(公告)号：US07545218B1
公开(公告)日：2009-06-09
申请号：US12054058
申请日：2008-03-24
申请人： Kenneth Sean Ozard
发明人： Kenneth Sean Ozard
IPC分类号： H03F3/04
CPC分类号： H03F3/19 , H03F1/26 , H03F2200/181 , H03F2200/372
摘要： A power amplifier for use in wireless communication devices is disclosed that reduces the noise generated at the output of the amplifier in the receive band of the wireless communication device. A resonant circuit is inserted between the base ballast resister and the lumped resister. The resonant frequency of the resonant circuit is adjusted to correspond to the frequency offset between the transmission frequency and the frequency corresponding to the peak noise in the receive band of the communication device.
摘要翻译：公开了一种用于无线通信设备的功率放大器，其降低了在无线通信设备的接收频带中的放大器的输出处产生的噪声。谐振电路插入在基极镇流器和集中电阻之间。谐振电路的谐振频率被调整为对应于通信设备的接收频带中与发送频率和对应于峰值噪声的频率之间的频率偏移。

73. 发明授权

US07459974B2 System and method for distortion cancellation in amplifiers 有权
标题翻译：放大器失真消除的系统和方法
公开(公告)号：US07459974B2
公开(公告)日：2008-12-02
申请号：US11945800
申请日：2007-11-27
申请人： Douglas M. Johnson , Rajah V. Vysyaraju , Steven Seiz
发明人： Douglas M. Johnson , Rajah V. Vysyaraju , Steven Seiz
IPC分类号： H03F1/00 , H03F3/68
CPC分类号： H03F1/3211 , H03F1/3223 , H03F3/45183 , H03F3/45188 , H03F2200/453 , H03F2203/45024 , H03F2203/45318 , H03F2203/45352 , H03F2203/45366 , H03F2203/45392
摘要： A distortion cancellation amplifier is described having a main amplifier and an error amplifier. The main amplifier, in response to an input signal, generates an output signal having an amplified signal component and a distortion signal component. The error amplifier is sized and biased to generate, in response to the same input signal, a distortion signal component that has substantially the same magnitude as the distortion signal component of the main amplifier. The distortion signal component from the error amplifier is subtracted from the output signal of the main amplifier.
摘要翻译：描述了具有主放大器和误差放大器的失真消除放大器。主放大器响应于输入信号，产生具有放大信号分量和失真信号分量的输出信号。误差放大器的尺寸和偏置被调整以响应于相同的输入信号产生具有与主放大器的失真信号分量基本上相同幅度的失真信号分量。来自误差放大器的失真信号分量从主放大器的输出信号中减去。

74. 发明授权

US07443236B2 CDMA power amplifier design for low and high power modes 有权
标题翻译： CDMA功率放大器设计用于低功耗和高功率模式
公开(公告)号：US07443236B2
公开(公告)日：2008-10-28
申请号：US11784541
申请日：2007-04-06
申请人： Gee Samuel Dow , Jianwen Bao , Chun-Wen Paul Huang
发明人： Gee Samuel Dow , Jianwen Bao , Chun-Wen Paul Huang
IPC分类号： H03F1/14
CPC分类号： H03F1/30 , H03F1/14 , H03F1/3241 , H03F1/56 , H03F3/189 , H03F3/191 , H03F3/60 , H03F2200/318 , H03F2200/411 , H03F2200/75
摘要： An amplifier circuit responsive to a power mode signal improves efficiency at low power levels without compromising efficiency at high power levels. At low power levels, high impedance is presented with suitable adjustment in the phase of the signal. Also, providing for predistortion linearization improves high power efficiency and switching the predistortion linearizer OFF at low power levels contributes little more than a small insertion loss. The power amplifier also uses a bias circuit incorporating a dual harmonic resonance filter to provide high impedance at a fundamental frequency and low impedance at a second harmonic. These properties are of particularly advantageous since amplifiers in cell-phones are used in low power modes most of the time although they are designed to be most efficient at primarily the highest power levels.
摘要翻译：响应于功率模式信号的放大器电路在低功率水平下提高效率，而不会在高功率水平下降低效率。在低功率电平下，在信号的相位中适当调整高阻抗。此外，提供预失真线性化提高了高功率效率，并且在低功率电平下切换预失真线性化器关闭仅仅贡献小于小的插入损耗。功率放大器还使用包含双谐波谐振滤波器的偏置电路，以在基频处提供高阻抗，在二次谐波下提供低阻抗。这些特性是特别有利的，因为手机中的放大器大部分时间都以低功率模式使用，尽管它们被设计为在主要最高功率水平下是最有效的。

75. 发明申请

US20080211573A1 Tunable balanced loss compensation in an electronic filter 有权
标题翻译：电子滤波器可调谐平衡损耗补偿
公开(公告)号：US20080211573A1
公开(公告)日：2008-09-04
申请号：US12151699
申请日：2008-05-08
申请人： Shaorui Li , John Thomas Bayruns
发明人： Shaorui Li , John Thomas Bayruns
IPC分类号： H04B1/10
CPC分类号： H03H11/1291 , H03H11/04
摘要： The invention provides a system for providing tunable balanced loss compensation in an electronic filter. Tunable balanced loss compensation is provided by using cross-connected balanced transconductors and self-connected balanced transconductors. The cross-connected balanced transconductors and the self-connected transconductors compensate the unbalanced loss across the electronic filter. The self-connected balanced transconductors compensate the balanced loss across the electronic filter. Further, the cross-connected and the self-connected balanced transconductors are tunable by adjusting the values of their transconductances, thereby providing tunable balanced loss compensation.
摘要翻译：本发明提供一种用于在电子滤波器中提供可调平衡损耗补偿的系统。可调平衡损耗补偿通过使用交叉连接的平衡跨导和自连接平衡跨导器来提供。交叉连接的平衡跨导体和自连接的跨导体补偿电子滤波器上的不平衡损耗。自连接平衡跨导器补偿电子滤波器的平衡损耗。此外，交叉连接和自连接的平衡跨导体可以通过调整它们的跨导值来调节，从而提供可调谐的平衡损耗补偿。

76. 发明授权

US07400873B2 Method and system for image rejection by using post mixer I/Q equalization 有权
标题翻译：使用后混合器I / Q均衡的图像抑制方法和系统
公开(公告)号：US07400873B2
公开(公告)日：2008-07-15
申请号：US11254386
申请日：2005-10-20
申请人： John Thomas Bayruns
发明人： John Thomas Bayruns
IPC分类号： H04B1/18
CPC分类号： H04B1/28 , H04L27/3818
摘要： The invention provides a system and method for tuning broadband signals by using post mixer I/Q equalization. An Image Rejection Mixer (IRM) is used for mixing Radio Frequency (RF) signals and rejecting image signals from the desired RF signals. The IRM includes an I/Q mixer and a filter. The I and Q paths resulting from the mixing operation in the I/Q mixer are equalized in amplitude and phase by an I/Q equalizer. Thereafter, the image signals are rejected from the desired RF signals using the filter.
摘要翻译：本发明提供一种通过使用后混频器I / Q均衡来调谐宽带信号的系统和方法。图像抑制混频器（IRM）用于混合射频（RF）信号，并从所需的RF信号中排除图像信号。 IRM包括I / Q混频器和滤波器。在I / Q混频器中由混合操作产生的I和Q路径在I / Q均衡器的幅度和相位上相等。此后，使用滤波器从所需的RF信号中拒绝图像信号。

77. 发明申请

US20070194839A1 Tunable balanced loss compensation in an electronic filter 审中-公开
标题翻译：电子滤波器可调谐平衡损耗补偿
公开(公告)号：US20070194839A1
公开(公告)日：2007-08-23
申请号：US11360257
申请日：2006-02-23
申请人： John Bayruns
发明人： John Bayruns
IPC分类号： H03K5/00
CPC分类号： H03H11/1291 , H03H11/04
摘要： The invention provides a system for providing tunable balanced loss compensation in an electronic filter. Tunable balanced loss compensation is provided by using cross-connected balanced transconductors and self-connected balanced transconductors. The cross-connected balanced transconductors and the self-connected transconductors compensate the unbalanced loss across the electronic filter. The self-connected balanced transconductors compensate the balanced loss across the electronic filter. Further, the cross-connected and the self-connected balanced transconductors are tunable by adjusting the values of their transconductances, thereby providing tunable balanced loss compensation.
摘要翻译：本发明提供一种用于在电子滤波器中提供可调平衡损耗补偿的系统。可调平衡损耗补偿通过使用交叉连接的平衡跨导和自连接平衡跨导器来提供。交叉连接的平衡跨导体和自连接的跨导体补偿电子滤波器上的不平衡损耗。自连接平衡跨导器补偿电子滤波器的平衡损耗。此外，交叉连接和自连接的平衡跨导体可以通过调整它们的跨导值来调节，从而提供可调谐的平衡损耗补偿。

78. 发明授权

US07248111B1 Multi-mode digital bias control for enhancing power amplifier efficiency 有权
标题翻译：多模数字偏置控制，提高功率放大器的效率
公开(公告)号：US07248111B1
公开(公告)日：2007-07-24
申请号：US11106254
申请日：2005-04-14
申请人： Sheldon Xu , Thomas William Arell , Mahendra Singh , Mohammed Ali Khatibzadeh
发明人： Sheldon Xu , Thomas William Arell , Mahendra Singh , Mohammed Ali Khatibzadeh
IPC分类号： H03G5/16
CPC分类号： H03G1/0088 , H03F1/0205 , H03F1/0261 , H03F1/302 , H03F3/191 , H03F3/343 , H03F2200/18 , H03F2200/222 , H03F2200/318 , H03F2200/387 , H03F2200/411 , H03G3/3047
摘要： A power amplifier with a multi-mode digital bias control circuit is provided. The power amplifier utilizes a complementary reference voltage generation circuit and a bias current-control circuit to generate a plurality of bias current levels for different output power levels. In an embodiment of the present invention, the power amplifier circuit is connected to a reference voltage and two control signals. Depending on the desired output power level, the control signals set the corresponding bias current in the amplifying transistors, to ensure sufficient linearity. The power amplifier is capable of operating at a very low quiescent current level, for example, 5 mA. As a result, a significant improvement in the power amplifier's overall efficiency is achieved, and the battery talk time of a wireless communication device is increased. The invention finds application in wireless communication devices such as CDMA, WCDMA, EDGE and WLAN mobile devices.
摘要翻译：提供了具有多模数字偏置控制电路的功率放大器。功率放大器利用互补参考电压产生电路和偏置电流控制电路来产生用于不同输出功率电平的多个偏置电流电平。在本发明的实施例中，功率放大器电路连接到参考电压和两个控制信号。根据期望的输出功率电平，控制信号在放大晶体管中设置相应的偏置电流，以确保足够的线性度。功率放大器能够以非常低的静态电流电平工作，例如5 mA。结果，实现了功率放大器的整体效率的显着改善，并且增加了无线通信设备的电池通话时间。本发明应用于诸如CDMA，WCDMA，EDGE和WLAN移动设备的无线通信设备中。

79. 发明申请

US20070159145A1 Compact voltage regulator 有权
标题翻译：紧凑型稳压器
公开(公告)号：US20070159145A1
公开(公告)日：2007-07-12
申请号：US11329449
申请日：2006-01-11
申请人： Henry Liwinski
发明人： Henry Liwinski
IPC分类号： G05F1/00
CPC分类号： G05F1/46
摘要： A voltage regulator for providing a regulated voltage is disclosed. The voltage regulator comprises an error amplifying module and a regulator. The error amplifying module provides a reference voltage, based on an output voltage to be regulated. The regulator provides a regulated output voltage based on the reference voltage. Voltage regulator provides stable output voltage against variations caused by power supply and load with a defined temperature coefficient.
摘要翻译：公开了一种用于提供调节电压的电压调节器。电压调节器包括误差放大模块和调节器。误差放大模块基于要调节的输出电压提供参考电压。调节器基于参考电压提供稳定的输出电压。电压调节器提供稳定的输出电压，防止由电源和负载引起的定义温度系数的负载。

80. 发明授权

US07015519B2 Structures and methods for fabricating vertically integrated HBT/FET device 有权
标题翻译：用于制造垂直集成HBT / FET器件的结构和方法
公开(公告)号：US07015519B2
公开(公告)日：2006-03-21
申请号：US10783830
申请日：2004-02-20
申请人： Oleh Krutko , Kezhou Xie , Mohsen Shokrani , Aditya Gupta , Boris Gedzberg
发明人： Oleh Krutko , Kezhou Xie , Mohsen Shokrani , Aditya Gupta , Boris Gedzberg
IPC分类号： H01L31/072
CPC分类号： H01L27/0623 , H01L27/0605
摘要： Methods and systems for fabricating integrated pairs of HBT/FET's are disclosed. One preferred embodiment comprises a method of fabricating an integrated pair of GaAs-based HBT and FET. The method comprises the steps of: growing a first set of epitaxial layers for fabricating the FET on a semi-insulating GaAs substrate; fabricating a highly doped thick GaAs layer serving as the cap layer for the FET and the subcollector layer for the HBT; and producing a second set of epitaxial layers for fabricating the HBT.
摘要翻译：公开了用于制造HBT / FET集成对的方法和系统。一个优选实施例包括一种制造基于GaAs的HBT和FET的集成对的方法。该方法包括以下步骤：在半绝缘GaAs衬底上生长用于制造FET的第一组外延层; 制造用作FET的盖层的高掺杂厚GaAs层和用于HBT的子集电极层; 以及制造用于制造HBT的第二组外延层。

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