公开(公告)号：US07738904B1

公开(公告)日：2010-06-15

申请号：US11437560

申请日：2006-05-19

申请人： George Chien ,  King Chun Tsai ,  Sang Won Son ,  Alireza Shirvani-Mahdavi ,  Qiong Sun ,  Leycheoh Lim

发明人： George Chien ,  King Chun Tsai ,  Sang Won Son ,  Alireza Shirvani-Mahdavi ,  Qiong Sun ,  Leycheoh Lim

IPC分类号： H04B7/00

CPC分类号： H04W52/52 ,  H04B17/102 ,  H04B17/13

摘要： Systems and methods are provided for calibrating the control mechanism in a communication circuit to allow the communication circuit to maintain a desired output power level. The communication circuit includes a variable gain adjustment circuit and a power amplifier, which operate together to provide an output power level. A control circuit controls the variable gain adjustment circuit based on a default gain parameter, a high power threshold, and a low power threshold. A calibration circuit in the control circuit calibrates a default gain parameter to provide a desired output power. A power detector can detect the desired output power level to provide an output power measurement. The calibration circuit calibrates upper and lower power thresholds to provide an acceptable range of power variation around the output power measurement.

摘要翻译： 提供了用于校准通信电路中的控制机构以允许通信电路保持期望的输出功率电平的系统和方法。 通信电路包括可变增益调整电路和功率放大器，其一起工作以提供输出功率电平。 控制电路基于默认增益参数，高功率阈值和低功率阈值来控制可变增益调整电路。 控制电路中的校准电路校准默认增益参数以提供期望的输出功率。 功率检测器可以检测期望的输出功率电平以提供输出功率测量。 校准电路校准上限和下限功率阈值，以提供输出功率测量周围功率变化范围的可接受范围。

公开(公告)号：US20090220035A1

公开(公告)日：2009-09-03

申请号：US12088040

申请日：2005-12-26

申请人： Sung-Ik Park ,  Seung-Won Kim ,  Soo-In Lee ,  Sang-Won Son ,  You-Seok Lee ,  Hyoung-Nam Kim

发明人： Sung-Ik Park ,  Seung-Won Kim ,  Soo-In Lee ,  Sang-Won Son ,  You-Seok Lee ,  Hyoung-Nam Kim

IPC分类号： H04L27/01

CPC分类号： H04L25/03159 ,  H04L25/0212

摘要： Provided is an apparatus for channel equalization in frequency domain, including: a channel estimation unit for estimating a channel on received signal from outside, a channel matched filter for changing channel characteristic of the channel estimated by the channel estimation unit and the received signal to channel characteristic to meet condition required for noncausal filtering, a noncausal filter for changing the channel characteristic changed by the channel matched filter from nonminimum phase channel to minimum phase channel, a reverse channel calculation unit for calculating a reverse of the channel changed by the non-causal filter in frequency domain, and a frequency domain equalization unit for performing channel equalization with respect to the channel changed by the noncausal filter in the frequency domain by using the reverse obtained by the reverse channel calculation unit as coefficients of the frequency domain equalization apparatus.

摘要翻译： 提供了一种频域信道均衡的装置，包括：信道估计单元，用于估计来自外部的接收信号的信道，用于改变由信道估计单元估计的信道的信道特性的信道匹配滤波器，以及接收的信道到信道 满足非因果滤波所需条件的特征，用于将由信道匹配滤波器改变的信道特性改变为非最小相位信道的非因果滤波器，用于计算由非因果变换的信道的反向的反向信道计算单元 滤波器，以及频域均衡单元，用于通过使用由反向信道计算单元获得的反向作为频域均衡装置的系数，对频域中的非因果滤波器改变的信道进行信道均衡。

公开(公告)号：US09647866B2

公开(公告)日：2017-05-09

申请号：US13298282

申请日：2011-11-16

申请人： Hua Wang ,  Chao Lu ,  Julia Liu ,  Chun-Hsien Peng ,  Sang Won Son ,  Paul Cheng Po Liang

发明人： Hua Wang ,  Chao Lu ,  Julia Liu ,  Chun-Hsien Peng ,  Sang Won Son ,  Paul Cheng Po Liang

IPC分类号： H04L25/49 ,  H04L27/36 ,  H04B1/04

CPC分类号： H04L27/367 ,  H03F1/3241 ,  H04B1/0475 ,  H04B2001/0425

摘要： A radio frequency (RF) transmitter has at least one digital signal processing module and at least one power amplifier module. The digital signal processing module includes at least one digital pre-distortion component arranged to receive at least one complex input signal, perform two-dimensional non-uniform mapping of the complex input signal to a first, in-phase, digital pre-distortion control word and a further, quadrature, digital pre-distortion control word, and output the in-phase and quadrature pre-distortion digital control words. The power amplifier module includes a first, in-phase, array of switch-mode power cells and at least one further, quadrature, array of switch-mode power cells. The two-dimensional non-uniform mapping has a pre-distortion profile at least partly based on an input/output relationship for the power amplifier module arranged to generate an analog RF signal based at least partly on the in-phase and quadrature digital pre-distortion control words.

公开(公告)号：US20120269291A1

公开(公告)日：2012-10-25

申请号：US13298282

申请日：2011-11-16

申请人： Hua Wang ,  Chao Lu ,  Julia Liu ,  Chun-Hsien Peng ,  Sang Won Son ,  Paul Cheng Po Liang

发明人： Hua Wang ,  Chao Lu ,  Julia Liu ,  Chun-Hsien Peng ,  Sang Won Son ,  Paul Cheng Po Liang

IPC分类号： H04L25/49

CPC分类号： H04L27/367 ,  H03F1/3241 ,  H04B1/0475 ,  H04B2001/0425

摘要： A radio frequency (RF) transmitter has at least one digital signal processing module and at least one power amplifier module. The digital signal processing module includes at least one digital pre-distortion component arranged to receive at least one complex input signal, perform two-dimensional non-uniform mapping of the complex input signal to a first, in-phase, digital pre-distortion control word and a further, quadrature, digital pre-distortion control word, and output the in-phase and quadrature pre-distortion digital control words. The power amplifier module includes a first, in-phase, array of switch-mode power cells and at least one further, quadrature, array of switch-mode power cells. The two-dimensional non-uniform mapping has a pre-distortion profile at least partly based on an input/output relationship for the power amplifier module arranged to generate an analogue RF signal based at least partly on the in-phase and quadrature digital pre-distortion control words.

摘要翻译： 射频（RF）发射机具有至少一个数字信号处理模块和至少一个功率放大器模块。 数字信号处理模块包括至少一个数字预失真分量，被布置成接收至少一个复合输入信号，执行复合输入信号到第一同相数字预失真控制的二维不均匀映射 字和另一个正交数字预失真控制字，并输出同相和正交预失真数字控制字。 功率放大器模块包括开关模式功率单元的第一同相阵列和至少一个另外的正交阵列的开关模式功率单元。 所述二维非均匀映射至少部分地基于用于功率放大器模块的输入/输出关系的预失真曲线，所述功率放大器模块被布置为至少部分地基于同相和正交数字预处理器生成模拟RF信号， 失真控制字。

公开(公告)号：US07808322B1

公开(公告)日：2010-10-05

申请号：US11656576

申请日：2007-01-23

申请人： Sang Won Son ,  King Chun Tsai ,  Yuan-Ju Chao ,  Lawrence Tse

发明人： Sang Won Son ,  King Chun Tsai ,  Yuan-Ju Chao ,  Lawrence Tse

IPC分类号： H03F3/18

CPC分类号： H03G3/3042

摘要： A system comprises a variable gain amplifier (VGA) that amplifies an input signal with a gain that is based on a gain control signal. A power amplifier receives an output of the VGA. Memory switches between at least two of N output power settings each including a predetermined reference value and a predetermined gain offset value. The memory substantially concurrently changes from the predetermined reference value and the predetermined gain offset value of a prior one of the N output power settings to the predetermined reference value and the predetermined gain offset value of a current one of the N output power settings, where N is an integer greater than one. A gain control adjuster adjusts the gain control signal based on an output of the power amplifier and the predetermined reference value and gain offset value of the current one of the N output power settings.

摘要翻译： 系统包括可变增益放大器（VGA），其以基于增益控制信号的增益放大输入信号。 功率放大器接收VGA的输出。 存储器在N个输出功率设置中的至少两个之间切换，每个输出功率设置包括预定的参考值和预定的增益偏移值。 存储器基本上同时从N个输出功率设置中的先前的一个的预定参考值和预定增益偏移值改变为N个输出功率设置中的当前参考值和预定增益偏移值，其中N 是大于1的整数。 增益控制调节器基于功率放大器的输出和N个输出功率设置中的当前一个的预定参考值和增益偏移值来调节增益控制信号。

公开(公告)号：US07610022B1

公开(公告)日：2009-10-27

申请号：US10794563

申请日：2004-03-05

申请人： Swee-Ann Teo ,  King Chun Tsai ,  Sang Won Son

发明人： Swee-Ann Teo ,  King Chun Tsai ,  Sang Won Son

IPC分类号： H04B1/38

CPC分类号： H03H11/04 ,  H03H11/1291

摘要： Apparatus, systems, and methods implementing techniques for filtering signals are described. A filter circuit receives an input signal and produces a corresponding filtered signal. The filter circuit has a transfer function that relates the filtered signal to the input signal. The transfer function includes at least one pole and at least one zero, where at least one of the zeros corresponds to a first frequency, and at least one of the poles corresponds to a second frequency. The apparatus also includes a negative-transconductance circuit that is coupled to the filter circuit and that increases a magnitude of a component of the filtered signal that corresponds to the second frequency.

摘要翻译： 描述了实现滤波信号技术的装置，系统和方法。 滤波器电路接收输入信号并产生相应的滤波信号。 滤波器电路具有将滤波后的信号与输入信号相关联的传递函数。 传递函数包括至少一个极和至少一个零，其中至少一个零对应于第一频率，并且至少一个极对应于第二频率。 该装置还包括负跨导电路，其耦合到滤波器电路并且增加对应于第二频率的滤波信号的分量的幅度。

公开(公告)号：US07173489B1

公开(公告)日：2007-02-06

申请号：US10648632

申请日：2003-08-25

申请人： Yonghua Song ,  Sang Won Son

发明人： Yonghua Song ,  Sang Won Son

IPC分类号： H03F3/45

CPC分类号： H03F3/45183 ,  H03F2203/45641 ,  H03F2203/45691 ,  H03F2203/45696 ,  H03G1/0088

摘要： A programmable gain voltage buffer circuit with a programmable gain may include transistors in parallel with resistors. The transistors may be used as variable resistors, with the resistors predominating the equivalent resistances at output points in different branches of the buffer circuit. The transistors may have resistances corresponding to programmable gain steps in the circuit.

摘要翻译： 具有可编程增益的可编程增益电压缓冲电路可以包括与电阻器并联的晶体管。 晶体管可以用作可变电阻器，其中电阻器主要在缓冲电路的不同分支中的输出点处的等效电阻。 晶体管可以具有对应于电路中的可编程增益步长的电阻。

公开(公告)号：US08139670B1

公开(公告)日：2012-03-20

申请号：US12235333

申请日：2008-09-22

申请人： Sang Won Son ,  Paolo Rossi ,  Siu Chuang Lu

发明人： Sang Won Son ,  Paolo Rossi ,  Siu Chuang Lu

IPC分类号： H04B7/02

CPC分类号： H04B7/0413

摘要： A scalable N×N single-chip dual-band MIMO RF transceiver module compatible with the IEEE 802.11n standard for WLAN applications is provided. A modular design approach allows a transceiver of substantially any dimension to be created on a single chip that may be easily integrated with other system components. An N×N MIMO transceiver module includes N substantially identical transceiver blocks and a common local oscillator. Each transceiver block includes transmitters and receivers for transmitting and receiving signals in two distinct frequency bands. The transceiver blocks further include one or more local oscillator signal repeaters for receiving one or more local oscillator signals and forwarding the one or more local oscillator signals to subsequent transceiver blocks.

摘要翻译： 提供了与WLAN应用的IEEE 802.11n标准兼容的可扩展N×N单芯片双频MIMO RF收发器模块。 模块化设计方法允许在单个芯片上创建基本上任何尺寸的收发器，该芯片可以容易地与其他系统组件集成。 N×N MIMO收发器模块包括N个基本相同的收发器模块和公共本地振荡器。 每个收发器块包括用于在两个不同频带中发射和接收信号的发射机和接收机。 收发器模块还包括一个或多个本地振荡器信号中继器，用于接收一个或多个本地振荡器信号，并将一个或多个本地振荡器信号转发到后续的收发器模块。

公开(公告)号：US20100220243A1

公开(公告)日：2010-09-02

申请号：US12775694

申请日：2010-05-07

申请人： George Chien ,  King Chun Tsai ,  Sang Won Son ,  Alireza Shirvani-Mahdavi ,  Qiong Sun ,  Leycheoh Lim

发明人： George Chien ,  King Chun Tsai ,  Sang Won Son ,  Alireza Shirvani-Mahdavi ,  Qiong Sun ,  Leycheoh Lim

IPC分类号： H04N5/52 ,  H04W52/52 ,  H03L5/00

CPC分类号： H04W52/52 ,  H04B17/102 ,  H04B17/13

摘要： Systems and methods are provided for calibrating the control mechanism in a communication circuit to allow the communication circuit to maintain a desired output power level. The communication circuit includes a variable gain adjustment circuit and a power amplifier, which operate together to provide an output power level. A control circuit controls the variable gain adjustment circuit based on a default gain parameter, a high power threshold, and a low power threshold. A calibration circuit in the control circuit calibrates a default gain parameter to provide a desired output power. A power detector can detect the desired output power level to provide an output power measurement. The calibration circuit calibrates upper and lower power thresholds to provide an acceptable range of power variation around the output power measurement.

摘要翻译： 提供了用于校准通信电路中的控制机构以允许通信电路保持期望的输出功率电平的系统和方法。 通信电路包括可变增益调整电路和功率放大器，其一起工作以提供输出功率电平。 控制电路基于默认增益参数，高功率阈值和低功率阈值来控制可变增益调整电路。 控制电路中的校准电路校准默认增益参数以提供期望的输出功率。 功率检测器可以检测期望的输出功率电平以提供输出功率测量。 校准电路校准上限和下限功率阈值，以提供输出功率测量周围功率变化范围的可接受范围。

公开(公告)号：US07167045B1

公开(公告)日：2007-01-23

申请号：US10861481

申请日：2004-06-07

申请人： Sang Won Son ,  King Chun Tsai ,  Yuan-Ju Chao ,  Lawrence Tse

发明人： Sang Won Son ,  King Chun Tsai ,  Yuan-Ju Chao ,  Lawrence Tse

IPC分类号： H03G5/16 ,  H03F3/26

CPC分类号： H03G3/3042

摘要： A system for communicating information includes a variable gain amplifier (VGA) responsive to an input signal and a gain control signal for controlling a gain of the VGA. The system also includes a power amplifier responsive to the VGA. An output power level of the power amplifier is compared to a predetermined reference value to generate the gain control signal. The gain control signal is offset by a gain offset value. To change the output power level of the power amplifier from a first output power level to a second output power level, a first predetermined reference value and a first gain offset value associated with the first output power level are changed substantially concurrently to a second predetermined reference value and a second gain offset value, respectively, associated with the second output power level.

摘要翻译： 用于传送信息的系统包括响应于输入信号的可变增益放大器（VGA）和用于控制VGA增益的增益控制信号。 该系统还包括一个响应于VGA的功率放大器。 将功率放大器的输出功率电平与预定参考值进行比较，以产生增益控制信号。 增益控制信号被增益偏移值偏移。 为了将功率放大器的输出功率电平从第一输出功率电平改变到第二输出功率电平，与第一输出功率电平相关联的第一预定参考值和第一增益偏移值基本同时地改变为第二预定参考 值和与第二输出功率电平相关联的第二增益偏移值。