公开(公告)号：US20100156536A1

公开(公告)日：2010-06-24

申请号：US12623136

申请日：2009-11-20

Applicant: Dong Ho Lee ,  Kyu Hwan An ,  Chang-Ho Lee ,  Joy Laskar

Inventor： Dong Ho Lee ,  Kyu Hwan An ,  Chang-Ho Lee ,  Joy Laskar

IPC: H03F3/45 ,  H03F3/04 ,  H03F3/16

CPC classification number: H03F1/3205 ,  H03F1/0261 ,  H03F1/223 ,  H03F3/45475 ,  H03F2200/18

Abstract: Systems and methods for providing a self-mixing adaptive bias circuit that may include a mixer, low-pass filter or a phase shifter, and a bias feeding block. The self-mixing adaptive bias circuit may generate an adaptive bias signal depending on input signal power level. As the input power level goes up, the adaptive bias circuit increases the bias voltage or bias current such that the amplifier will save current consumption at low power operation levels and obtain better linearity at high power operation levels compared to conventional biasing techniques. Moreover, the adaptive bias output signal can be used to cancel the third-order intermodulation terms (IM3) to further enhance the linearity as a secondary effect.

Abstract translation: 用于提供可以包括混频器，低通滤波器或移相器的自混合自适应偏置电路的系统和方法以及偏置馈电块。 自混合自适应偏置电路可以根据输入信号功率电平产生自适应偏置信号。 随着输入功率电平上升，自适应偏置电路增加了偏置电压或偏置电流，使得放大器可以在低功率运行电平下节省电流消耗，并且与常规偏置技术相比，在高功率运行电平下获得更好的线性度。 此外，自适应偏置输出信号可以用于消除三阶互调项（IM3），以进一步增强作为次级效应的线性。

公开(公告)号：US20100148877A1

公开(公告)日：2010-06-17

申请号：US12623164

申请日：2009-11-20

Applicant: Michael Alan Oakley ,  Dong Ho Lee ,  Kyu Hwan An ,  Chang-Ho Lee ,  Joy Laskar

Inventor： Michael Alan Oakley ,  Dong Ho Lee ,  Kyu Hwan An ,  Chang-Ho Lee ,  Joy Laskar

IPC: H03F3/68 ,  H03F3/16

CPC classification number: H03F3/45188 ,  H03F1/0288 ,  H03F3/211 ,  H03F3/604

Abstract: An integrated power amplifier can include a carrier amplifier, where the carrier amplifier is connected to a first quarter wave transformer at the input of the carrier amplifier. In addition, the power amplifier can further include at least one peaking amplifier connected in parallel with the carrier amplifier; a first differential combining structure, where the first combining structure includes a first plurality of quarter wave transformers that are configured to combine respective first differential outputs of the carrier amplifier in phase to generate a first single-ended output signal, and a second differential combining structure, where the second combining structures includes a second plurality of quarter wave transformers that are configured to combine respective second differential outputs of the at least one peaking amplifier in phase to generate a second single-ended output signal, where the first single-ended output signal and the second single-ended output signal are combinable in-phase to provide an overall output.

Abstract translation: 集成功率放大器可以包括载波放大器，其中载波放大器在载波放大器的输入处连接到第一四分之一波长的变压器。 此外，功率放大器还可以包括与载波放大器并联连接的至少一个峰值放大器; 第一差分组合结构，其中所述第一组合结构包括第一多个四分之一波长变换器，其被配置为相位地组合所述载波放大器的相应的第一差分输出以产生第一单端输出信号，以及第二差分组合结构 ，其中所述第二组合结构包括第二多个四分之一波长变换器，其被配置为组合所述至少一个峰值放大器的相应的第二差分输出以产生第二单端输出信号，其中所述第一单端输出信号 并且第二单端输出信号可同步地组合以提供总体输出。

公开(公告)号：US20100127780A1

公开(公告)日：2010-05-27

申请号：US12620476

申请日：2009-11-17

Applicant: Kyu Hwan An ,  Dong Ho Lee ,  Chang-Ho Lee ,  Joy Laskar

Inventor： Kyu Hwan An ,  Dong Ho Lee ,  Chang-Ho Lee ,  Joy Laskar

IPC: H03F3/68

CPC classification number: H03F1/0277 ,  H03F1/0266 ,  H03F1/223 ,  H03F3/211 ,  H03F3/72 ,  H03F2200/105 ,  H03F2200/222 ,  H03F2200/318 ,  H03F2200/387 ,  H03F2200/541 ,  H03F2200/543 ,  H03F2203/21103 ,  H03F2203/21118 ,  H03F2203/21139 ,  H03F2203/7206 ,  H03F2203/7236

Abstract: Systems and methods are provided for power amplifiers with discrete power control. The systems and methods may include a plurality of unit power amplifiers; a plurality of primary windings, wherein each primary winding is connected to at least one respective output port of a respective one the plurality of unit power amplifiers; a secondary winding inductively coupled to the plurality of primary windings, where the secondary winding provides an overall output; a bias controller, where the bias controller provides a respective bias voltage based at least in part on a level of output power to one or more of the plurality of unit power amplifiers; and a switch controller, where the switch controller operates to activate or deactivate at least one of the plurality of unit power amplifiers via a respective control signal.

Abstract translation: 为具有分立功率控制的功率放大器提供系统和方法。 系统和方法可以包括多个单位功率放大器; 多个初级绕组，其中每个初级绕组连接到所述多个单位功率放大器中的相应一个的至少一个相应的输出端口; 电感耦合到所述多个初级绕组的次级绕组，其中所述次级绕组提供总输出; 偏置控制器，其中所述偏置控制器至少部分地基于对所述多个单元功率放大器中的一个或多个的输出功率的电平提供相应的偏置电压; 以及开关控制器，其中所述开关控制器操作以经由相应的控制信号来激活或去激活所述多个单元功率放大器中的至少一个。

公开(公告)号：US07710919B2

公开(公告)日：2010-05-04

申请号：US11458249

申请日：2006-07-18

Applicant: Wangmyong Woo ,  Chang-Ho Lee ,  Jungsuk Lee ,  Haksun Kim

Inventor： Wangmyong Woo ,  Chang-Ho Lee ,  Jungsuk Lee ,  Haksun Kim

IPC: H04W4/00

CPC classification number: H04B1/406 ,  H04W16/14

Abstract: Systems, methods, and apparatuses are provided for spectrum-sensing cognitive radios that are operative to detect and utilize available RF spectrum resources. The spectrum-sensing cognitive radios include at least one antenna and a frequency-agile radio front-end module in communication with the at least one antenna and configured to transmit and receive radio frequency signals via the at least one antenna. In addition, a spectrum-sensing module, which may include one or both of coarse-sensing and fine-sensing modules, may be in communication with the at least one antenna and be configured to generate RF spectrum usage information. A medium access control (MAC) module is operative to receive the RF spectrum usage information from the spectrum-sensing module. Based upon the received RF spectrum usage information, the MAC module is operative to direct a frequency of operation of the radio front-end module based at least in part on the received spectrum usage information.

Abstract translation: 提供了用于检测和利用可用RF频谱资源的频谱感知认知无线电的系统，方法和装置。 频谱感知认知无线电包括与所述至少一个天线通信的至少一个天线和频率敏捷无线电前端模块，并被配置为经由所述至少一个天线发射和接收射频信号。 此外，可以包括粗略感测和精细感测模块中的一个或两个的频谱感测模块可以与至少一个天线通信，并且被配置为生成RF频谱使用信息。 媒体访问控制（MAC）模块用于从频谱感测模块接收RF频谱使用信息。 基于所接收的RF频谱使用信息，MAC模块至少部分地基于所接收的频谱使用信息来操作以指导无线电前端模块的操作频率。

公开(公告)号：US20100074367A1

公开(公告)日：2010-03-25

申请号：US12561890

申请日：2009-09-17

Applicant: Kwan-Woo Kim ,  Kyutae Lim ,  Chang-Ho Lee ,  Haksun Kim ,  Joy Laskar

Inventor： Kwan-Woo Kim ,  Kyutae Lim ,  Chang-Ho Lee ,  Haksun Kim ,  Joy Laskar

IPC: H04L25/03 ,  H04L27/12

CPC classification number: H04L27/361 ,  H03F1/0294 ,  H03F1/3247 ,  H03F3/24 ,  H03F2200/207 ,  H03F2200/336 ,  H03F2200/375 ,  H03F2201/3233

Abstract: Systems and methods may include a signal component separator that receives a non-constant envelope input signal and at least one phase offset value, and generates first digital phase data and second digital phase data; at least one digital phase modulator that receives the first phase data and the second phase data and operates with a frequency synthesizer to generate a first component signal having a first constant envelope and a second component signal having a second constant envelope; at least one power amplifier that amplifies the first component signal and the second component signal; a non-isolated power combiner that combines the first amplified component signal and the second amplified component signal to generate an output signal having a non-constant envelope; and a mismatch compensator that monitors the output signal to determine the at least one phase offset value, where the at least one phase offset value is utilized by the signal component separator for phase adjustment.

Abstract translation: 系统和方法可以包括接收非恒定包络输入信号和至少一个相位偏移值的信号分量分离器，并且产生第一数字相位数据和第二数字相位数据; 至少一个数字相位调制器，其接收第一相位数据和第二相位数据，并与频率合成器一起工作，以产生具有第一恒定包络线的第一分量信号和具有第二恒定包络线的第二分量信号; 至少一个放大第一分量信号和第二分量信号的功率放大器; 非隔离功率组合器，其组合所述第一放大分量信号和所述第二放大分量信号以产生具有非常数包络线的输出信号; 以及不匹配补偿器，其监视所述输出信号以确定所述至少一个相位偏移值，其中所述至少一个相位偏移值由所述信号分量分离器用于相位调整。

公开(公告)号：US20100073084A1

公开(公告)日：2010-03-25

申请号：US12563710

申请日：2009-09-21

Applicant: Joonhoi Hur ,  Kwan-Woo Kim ,  Kyutae Lim ,  Chang-Ho Lee ,  Haksun Kim ,  Joy Laskar

Inventor： Joonhoi Hur ,  Kwan-Woo Kim ,  Kyutae Lim ,  Chang-Ho Lee ,  Haksun Kim ,  Joy Laskar

IPC: H03F3/68

CPC classification number: H03F1/0294 ,  H03F1/025 ,  H03F1/3241 ,  H03F3/191 ,  H03F3/24

Abstract: Systems and methods may be provided for a LINC system having a level-shifting LINC amplifier. The systems and methods may include a dynamic power supply that is adjustable to provide at least a first voltage supply level and a second voltage supply level higher than the first voltage supply level; a first power amplifier that amplifies a first component signal to generate a first amplified signal; a second power amplifier that amplifiers a second component signal to generate a second amplified signal, where the first component signal and the second component signal are components of an original signal, where the first component signal and the second component signal each have a constant envelope, and where the original signal has a non-constant envelope, and where the first and second power amplifiers are biased at the first voltage supply level or the second voltage supply level based upon an analysis of an amplitude of the original signal.

Abstract translation: 可以为具有电平移位LINC放大器的LINC系统提供系统和方法。 系统和方法可以包括动态电源，其可调节以提供高于第一电压供应电平的至少第一电压供应电平和第二电压供应电平; 第一功率放大器，其放大第一分量信号以产生第一放大信号; 第二功率放大器，放大第二分量信号以产生第二放大信号，其中第一分量信号和第二分量信号是原始信号的分量，其中第一分量信号和第二分量信号各自具有恒定的包络线， 并且其中原始信号具有非恒定包络，并且其中基于原始信号的幅度的分析，第一和第二功率放大器被偏置在第一电压供应电平或第二电压供应电平。

公开(公告)号：US20100004440A1

公开(公告)日：2010-01-07

申请号：US12585229

申请日：2009-09-09

Applicant: Dong-Gyu CHO ,  Jae-Hong LIM ,  Jae-Taeg HWANG ,  Woo-Young CHO ,  Hyun-Sook JANG ,  Chang-Ho LEE ,  Tae-Saeng CHOI ,  Chung-Mi KIM ,  Yong-Zu KIM ,  Tae-Kyun KIM ,  Seung-Joo CHO ,  Gyoung-Won KIM ,  Jong-Ryoo CHOI ,  Jeong-Min KIM ,  Kee-Yoon ROH

Inventor： Dong-Gyu CHO ,  Jae-Hong LIM ,  Jae-Taeg HWANG ,  Woo-Young CHO ,  Hyun-Sook JANG ,  Chang-Ho LEE ,  Tae-Saeng CHOI ,  Chung-Mi KIM ,  Yong-Zu KIM ,  Tae-Kyun KIM ,  Seung-Joo CHO ,  Gyoung-Won KIM ,  Jong-Ryoo CHOI ,  Jeong-Min KIM ,  Kee-Yoon ROH

IPC: C07D473/00 ,  C07F9/02

CPC classification number: C07H19/10 ,  C07F9/65616 ,  C07H19/20

Abstract: The present invention relates to an acyclic nucleoside phosphonate derivative which is useful as an antiviral agent (particularly, against hepatitis B virus), pharmaceutically acceptable salts, stereoisomers, and a process for the preparation thereof.

Abstract translation: 本发明涉及可用作抗病毒剂（特别是针对乙型肝炎病毒）的无环核苷膦酸酯衍生物，其药学上可接受的盐，立体异构体及其制备方法。

公开(公告)号：US07642858B2

公开(公告)日：2010-01-05

申请号：US11970192

申请日：2008-01-07

Applicant: Dong Ho Lee ,  Ki Seok Yang ,  Yunseok Kim ,  Sanghee Kim ,  Hyogeun Bae ,  Kijoong Kim ,  Li Lee ,  Songcheol Hong ,  Chang-Ho Lee ,  Haksun Kim ,  Joy Laskar

Inventor： Dong Ho Lee ,  Ki Seok Yang ,  Yunseok Kim ,  Sanghee Kim ,  Hyogeun Bae ,  Kijoong Kim ,  Li Lee ,  Songcheol Hong ,  Chang-Ho Lee ,  Haksun Kim ,  Joy Laskar

IPC: H03F3/04

CPC classification number: H03H11/32 ,  H03F1/223 ,  H03F3/195 ,  H03F3/4508 ,  H03F3/45179 ,  H03F3/45632 ,  H03F2200/06 ,  H03F2203/45301 ,  H03F2203/45304 ,  H03F2203/45306 ,  H03F2203/45318 ,  H03F2203/45562 ,  H03F2203/45631 ,  H03F2203/45644 ,  H03F2203/45648 ,  H03F2203/45702

Abstract: Example embodiments of the invention may provide for active baluns. An example active balun may include a resonator that may convert a single-ended input signal to at least two differential input signals, and a differential switching block that includes first and second transistors that each receive a respective one of the at least two differential input signals from the resonator, where the first and second transistors may be cross-coupled to each other to provide a first differential output signal and a second differential output signal. An example active balun may further include one or more loads connected to the first and second differential output signals, and one or more stacked inverters that may provide a first output port and a second output port, where the first output port may be responsive to the first differential output signal and the second output port may be responsive to the second differential output signal.

Abstract translation: 本发明的示例性实施例可以提供主动巴伦。 示例性主动平衡 - 不平衡变换器可以包括可以将单端输入信号转换为至少两个差分输入信号的谐振器，以及包括第一和第二晶体管的差分开关块，每个晶体管接收至少两个差分输入信号中的相应一个 其中所述第一和第二晶体管可以彼此交叉耦合以提供第一差分输出信号和第二差分输出信号。 主动平衡 - 不平衡变换器的示例还可以包括连接到第一和第二差分输出信号的一个或多个负载，以及可以提供第一输出端口和第二输出端口的一个或多个堆叠逆变器，其中第一输出端口可以响应于 第一差分输出信号和第二输出端口可以响应于第二差分输出信号。

公开(公告)号：US20090309662A1

公开(公告)日：2009-12-17

申请号：US12138188

申请日：2008-06-12

Applicant: Ki Seok Yang ,  Jaejoon Chang ,  Kyu Hwan An ,  Wangmyong Woo ,  Chang-Ho Lee ,  Younsuk Kim ,  Hyogun Bae ,  Kijoong Kim ,  Shinichi Iizuka

Inventor： Ki Seok Yang ,  Jaejoon Chang ,  Kyu Hwan An ,  Wangmyong Woo ,  Chang-Ho Lee ,  Younsuk Kim ,  Hyogun Bae ,  Kijoong Kim ,  Shinichi Iizuka

IPC: H03F3/68

CPC classification number: H03F3/211 ,  H01L23/66 ,  H01L24/45 ,  H01L24/48 ,  H01L24/49 ,  H01L2223/6644 ,  H01L2223/6677 ,  H01L2224/45124 ,  H01L2224/45139 ,  H01L2224/45144 ,  H01L2224/45147 ,  H01L2224/48091 ,  H01L2224/48195 ,  H01L2224/49 ,  H01L2924/00014 ,  H01L2924/01006 ,  H01L2924/01013 ,  H01L2924/01014 ,  H01L2924/01023 ,  H01L2924/01024 ,  H01L2924/01028 ,  H01L2924/01029 ,  H01L2924/01031 ,  H01L2924/01033 ,  H01L2924/01047 ,  H01L2924/01049 ,  H01L2924/01079 ,  H01L2924/01082 ,  H01L2924/014 ,  H01L2924/09701 ,  H01L2924/10329 ,  H01L2924/1305 ,  H01L2924/1306 ,  H01L2924/19011 ,  H01L2924/19041 ,  H01L2924/3011 ,  H03F3/195 ,  H03F2200/451 ,  H03F2200/537 ,  H03F2200/541 ,  H03F2203/21142 ,  H01L2924/00 ,  H01L2224/05599

Abstract: Embodiments of the invention may provide for systems and methods for providing a power amplifier with integrated passive device, thereby improving the performance of the power amplifier. The power amplifier may include a signal amplification section, a power combining section, and a coupling device section that interconnects the signal amplification section and the power combining section. The signal amplification section may be implemented on a first substrate, and the power combining section may be implemented on a second substrate, where the first substrate and the second substrate may be different. The power combining section may be implemented by the integrated passive device (IPD) that may have characteristics of high performance passive device with flexibility of implementing diverse functions, including a notch filter, a low pass filter, and/or bypass capacitance for bias network. The power combining section implemented by the integrated passive device may have an improved power combining efficiency.

Abstract translation: 本发明的实施例可以提供用于向功率放大器提供集成无源器件的系统和方法，从而提高功率放大器的性能。 功率放大器可以包括信号放大部分，功率组合部分和将信号放大部分和功率合成部分互连的耦合器件部分。 信号放大部分可以在第一基板上实现，并且功率组合部分可以在第二基板上实现，其中第一基板和第二基板可以不同。 功率组合部分可以由可能具有高性能无源器件特性的集成无源器件（IPD）来实现，其具有实现各种功能的灵活性，包括用于偏置网络的陷波滤波器，低通滤波器和/或旁路电容。 由集成无源设备实现的功率组合部分可以具有改进的功率组合效率。

公开(公告)号：US20090309661A1

公开(公告)日：2009-12-17

申请号：US12138965

申请日：2008-06-13

Applicant: Jaejoon Chang ,  Ki Seok Yang ,  Kyu Hwan An ,  Wangmyong Woo ,  Chang-Ho Lee ,  Younsuk Kim ,  Hyogun Bae ,  Kijoong Kim ,  Shinichi Iizuka

Inventor： Jaejoon Chang ,  Ki Seok Yang ,  Kyu Hwan An ,  Wangmyong Woo ,  Chang-Ho Lee ,  Younsuk Kim ,  Hyogun Bae ,  Kijoong Kim ,  Shinichi Iizuka

IPC: H03G3/30

CPC classification number: H03F1/0272 ,  H03F3/24 ,  H03F2200/408 ,  H03F2200/411 ,  H03F2200/462

Abstract: Embodiments of the invention may provide for enhancement systems and methods for a power amplifier output control system. In an example embodiment, driver amplifier control may be provided in conjunction with power amplifier control to improve the power efficiency and/or dynamic range of the transmitter system. Furthermore, control over the driver amplifier may allow for relaxed power control slope, which may lessens the burden of digital to analog converters (DACs) in transmitter systems such as cellular transmitter systems. Also, systems and methods in accordance with example embodiments of the invention may provide a less sensitive solution to operational environment variations such as temperature, battery power voltage and implementation IC process.

Abstract translation: 本发明的实施例可以提供用于功率放大器输出控制系统的增强系统和方法。 在示例实施例中，可以结合功率放大器控制来提供驱动器放大器控制，以提高发射机系统的功率效率和/或动态范围。 此外，对驱动放大器的控制可以允许松弛的功率控制斜率，这可以减轻诸如蜂窝发射机系统的发射机系统中的数模转换器（DAC）的负担。 而且，根据本发明的示例性实施例的系统和方法可以提供对诸如温度，电池电源电压和实施IC过程的操作环境变化的较不敏感的解决方案。