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1.发明授权Method and apparatus for enhancing transmitter circuit efficiency of mobile radio units by selectable switching of power amplifier 失效通过功率放大器的可选择切换来增强移动无线电单元的发射机电路效率的方法和装置公开(公告)号：US06208846B1
公开(公告)日：2001-03-27
申请号：US08782355
申请日：1997-01-13
申请人： Young-Kai Chen , Sanjay Kasturia , Jenshan Lin , Huan-Shang Tsai
发明人： Young-Kai Chen , Sanjay Kasturia , Jenshan Lin , Huan-Shang Tsai
IPC分类号： H04B104
CPC分类号： H04W52/52 , H03F2203/7239 , H04B2001/0416
摘要： A circuit that increases the efficiency of a radio frequency mobile telephone unit is disclosed. When the signal strength between the base station and the mobile unit is below a predetermined signal strength level, the power amplifier is turned on and the transmitter circuit of the mobile unit fully amplifies the RF signal. However, when the signal strength between the mobile telephone unit and the base station is above a predetermined signal strength level, the power amplifier is deactivated and bypassed from the transmitter circuitry, thereby conserving the battery power of the mobile unit.
摘要翻译： 公开了一种提高射频移动电话机的效率的电路。 当基站和移动单元之间的信号强度低于预定信号强度电平时，功率放大器导通，移动单元的发射机电路完全放大RF信号。 然而，当移动电话单元和基站之间的信号强度高于预定的信号强度水平时，功率放大器被去激活并从发射机电路旁路，从而节省了移动单元的电池功率。
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2.发明授权Fast adaptive wideband power amplifier feed forward linearizer using a RLS parameter tracking algorithm 失效快速自适应宽带功率放大器使用RLS参数跟踪算法进行前馈线性化
公开(公告)号：US6154093A
公开(公告)日：2000-11-28
申请号：US53407
申请日：1998-04-01
CPC分类号： H03F1/3229
摘要： A feedforward linearizer for amplifying an input signal comprises a signal cancellation circuit which has a first branch and a second branch. A first amplifier provided in the first branch receives the input signal intended to be amplified and generates an output signal received by a signal cancellation vector modulator. A signal cancellation adder receives the signal generated by the signal cancellation vector modulator and the input signal via the second branch and provides an error signal. The feedforward linearizer also comprises an error cancellation circuit that has a first branch and a second branch. An error cancellation adder in the first branch receives the output signal provided by the first amplifier and generates the output signal of the linearizer. An error cancellation vector modulator in the second branch receives an error signal provided by the signal cancellation adder and provides an error adjusted signal to a second auxiliary amplifier. The second auxiliary amplifier provides an input signal to the error cancellation adder. A digital signal processor provides a signal cancellation adjustment signal, .alpha., to the signal cancellation vector modulator and an error cancellation adjustment signal, .beta., to the error cancellation vector modulator respectively, such that the output signal of the signal cancellation adder is a signal that substantially represents the error components provided by the first amplifier, and the output signal of the error cancellation adder is an amplified version of the input signal, with substantially no internmodulation components.
摘要翻译： 用于放大输入信号的前馈线性化电路包括具有第一分支和第二分支的信号消除电路。 设置在第一分支中的第一放大器接收要被放大的输入信号，并产生由信号消除矢量调制器接收的输出信号。 信号消除加法器通过第二分支器接收由信号消除矢量调制器产生的信号和输入信号，并提供误差信号。 前馈线性化电路还包括具有第一分支和第二分支的误差消除电路。 第一分支中的误差消除加法器接收由第一放大器提供的输出信号，并产生线性化器的输出信号。 第二分支中的误差消除矢量调制器接收由信号消除加法器提供的误差信号，并向第二辅助放大器提供误差调整信号。 第二辅助放大器向误差消除加法器提供输入信号。 数字信号处理器分别向信号消除矢量调制器提供信号消除调整信号α，并将误差消除调整信号β分别提供给误差消除矢量调制器，使得信号消除加法器的输出信号是 基本上表示由第一放大器提供的误差分量，误差消除加法器的输出信号是输入信号的放大版本，基本上没有内部调制分量。
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3.发明授权Joint maximum likelihood sequence estimator with dynamic channel description 失效具有动态信道描述的联合最大似然序列估计器
公开(公告)号：US6144710A
公开(公告)日：2000-11-07
申请号：US65193
申请日：1998-04-23
IPC分类号： H04B7/26 , H03M13/23 , H04B7/005 , H04L25/02 , H03D1/04 , H03D1/06 , H03K5/01 , H03K6/04 , H04B1/10
CPC分类号： H04L25/0204
摘要： A cellular communication signal receiver receives a desired signal in the presence of at least one co-channel interference signal. The receiver comprises a channel estimator configured to receive a plurality of training signal samples to estimate the finite impulse response to the desired signal and the co-channel interference signal. The finite impulse response estimates having a predetermined number of channel taps defining the length of the desired channel and the length of co-channel interference channel. A Viterbi decoder is coupled to the channel estimator, and configured to receive the desired and co-channel interference signals. The channel estimator generates channel tap estimates. A power calculator is coupled to the channel estimator and configured to estimate the power of the estimated channel taps. A joint channel trimmer is coupled to the power calculator and configured to maintain a joint channel length, such that the desired signal channel length plus the co-channel interference channel length have a fixed size that defines the number of states the Viterbi decoder allocates to the desired signal and the co-channel interference signal.
摘要翻译： 蜂窝通信信号接收机在存在至少一个同信道干扰信号的情况下接收所需信号。 接收机包括信道估计器，其被配置为接收多个训练信号采样以估计对期望信号和同信道干扰信号的有限脉冲响应。 有限脉冲响应估计具有预定数量的信道抽头，其定义所需信道的长度和同信道干扰信道的长度。 维特比解码器耦合到信道估计器，并且被配置为接收期望的和同信道干扰信号。 信道估计器产生信道抽头估计。 功率计算器耦合到信道估计器并且被配置为估计所估计的信道抽头的功率。 联合通道微调器耦合到功率计算器并且被配置为保持联合通道长度，使得期望的信道信道长度加上同信道干扰信道长度具有固定的大小，其定义维特比解码器分配给的信道的数量 所需信号和同信道干扰信号。
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4.发明授权Adaptive joint linearization, equalization and delay alignment for a wideband power amplifier 失效用于宽带功率放大器的自适应联合线性化，均衡和延迟对准公开(公告)号：US06172565B2
公开(公告)日：2001-01-09
申请号：US09041604
申请日：1998-03-13
IPC分类号： H03F126
CPC分类号： H03F1/3229
摘要： A feedforward linearizer includes a signal cancellation circuit and an error cancellation circuit. The signal cancellation circuit includes a tap delay line, that delay the input signal by a predetermined time delay so as to provide several delayed versions of the input signal. Each delayed version of the input signal is weighted by a tap coefficient. The weighted signals are then added together and fed to the power amplifier. The tap coefficients are derived such that the signals traveling through the upper and lower branch of the signal cancellation loop are aligned and that the output signal of the power amplifier is equalized.
摘要翻译： 前馈线性化电路包括信号消除电路和误差消除电路。 信号消除电路包括抽头延迟线，其将输入信号延迟预定的时间延迟，以便提供输入信号的几个延迟版本。 每个延迟版本的输入信号由抽头系数加权。 然后将加权信号相加并馈送到功率放大器。 导出抽头系数，使得通过信号消除环路的上部和下部分支行进的信号被对准，并且功率放大器的输出信号相等。
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5.发明授权Linear power amplifier with automatic gate/base bias control for optimum efficiency 失效线性功率放大器，具有自动门/基极偏置控制，实现最佳效率
公开(公告)号：US5724005A
公开(公告)日：1998-03-03
申请号：US637999
申请日：1996-04-25
申请人： Young-Kai Chen , Jenshan Lin
发明人： Young-Kai Chen , Jenshan Lin
CPC分类号： H03F1/0261 , H03F2200/372
摘要： A dynamic power amplifier advantageously employed in a wireless terminal for transferring and receiving signals from a base terminal includes an input amplifier adapted to receive an input signal having a given power signal level corresponding to the distance of said wireless terminal to the terminal and adapted to provide an amplifier output signal having a given power output signal level. The dynamic amplifier further includes a power sensor configured to receive the power output signal and to generate a power indication signal corresponding to the power output signal, and a converter adapted to receive the power indication signal in order to generate a biasing signal corresponding to the power indication signal. The biasing signal is applied to the input amplifier so that the operating bias point of the power amplifier varies as a function of the power indication signal.
摘要翻译： 在无线终端中有利地用于从基站发送和接收信号的动态功率放大器包括输入放大器，其适于接收具有与所述无线终端到终端的距离相对应的给定功率信号电平的输入信号，并适于提供 具有给定功率输出信号电平的放大器输出信号。 动态放大器还包括功率传感器，其被配置为接收功率输出信号并产生对应于功率输出信号的功率指示信号，以及转换器，其适于接收功率指示信号，以产生对应于功率的偏置信号 指示信号。 偏置信号被施加到输入放大器，使得功率放大器的工作偏置点根据功率指示信号而变化。
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公开(公告)号：US5832365A
公开(公告)日：1998-11-03
申请号：US723812
申请日：1996-09-30
申请人： Young-Kai Chen , Jenshan Lin
发明人： Young-Kai Chen , Jenshan Lin
CPC分类号： H01Q3/385 , H01Q1/007 , H01Q23/00 , H04B7/1555
摘要： An indoor wireless communications system using two-way active-antenna repeaters to distribute signals received from external signal sources within an office, and to extend the range of cordless phone units in use there, is disclosed. The repeaters provide menu-selectable phase-shifting, selectable receiver sensitivity and transmitter power, and selectable signal format conversion to provide added privacy and to prevent interference with communication links in use by third parties within the building. Pattern selection is done by empirical adjustment of an antenna pattern suited to the general floor plan of the area served.
摘要翻译： 公开了一种使用双向有源天线中继器来分配从办公室内的外部信号源接收到的信号并扩展其中使用的无绳电话单元的范围的室内无线通信系统。 中继器提供菜单选择的相移，可选择的接收机灵敏度和发射机功率，以及可选择的信号格式转换，以提供附加的隐私，并防止对建筑物内第三方使用的通信链路的干扰。 模式选择通过对适用于所服务区域的一般平面图的天线方向图的经验调整来完成。
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公开(公告)号：US5940291A
公开(公告)日：1999-08-17
申请号：US853083
申请日：1997-05-08
申请人： Joel L. Dawson , Jenshan Lin , Young-Kai Chen
发明人： Joel L. Dawson , Jenshan Lin , Young-Kai Chen
IPC分类号： G05B13/02
CPC分类号： G05B13/021
摘要： In accordance with one embodiment of the present intention, an adaptive feedback controller is configured to substantially reduce an error control signal defined by the difference between a command signal and the output signal of a controlled device. The adaptive controller comprises a step generator circuit configured to provide a control signal which is employed to vary the input signal received by the controlled device, The control signal is substantially in the shape of a ramp signal having a given slew rate. An adaptive slew rate computation circuit is coupled to the step generator so as to provide a slew rate compensation signal to the step generator to increase the slew rate of the control signal, when the controlled device is responding to a substantially fast varying input signal. The slew rate compensation circuit decreases the slew rate of the control signal, when the controlled device is responding to a slow varying input signal.
摘要翻译： 根据本意图的一个实施例，自适应反馈控制器被配置为基本上减少由控制设备的命令信号和输出信号之间的差定义的误差控制信号。 自适应控制器包括步进发生器电路，其被配置为提供用于改变由受控设备接收的输入信号的控制信号。控制信号基本上是具有给定转换速率的斜坡信号的形状。 自适应转换速率计算电路耦合到步进发生器，以便当受控装置响应于基本上快速变化的输入信号时，向步进发生器提供转换速率补偿信号以增加控制信号的转换速率。 当控制装置响应慢变化的输入信号时，转换速率补偿电路降低控制信号的转换速率。
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公开(公告)号：US09325056B2
公开(公告)日：2016-04-26
申请号：US13609388
申请日：2012-09-11
CPC分类号： H01Q1/2283 , H01L23/66 , H01L24/13 , H01L24/14 , H01L24/16 , H01L2223/6677 , H01L2224/13101 , H01L2224/16225 , H01L2924/10253 , H01L2924/12042 , H01L2924/351 , H01Q9/0435 , H01Q23/00 , H01L2924/014 , H01L2924/00014 , H01L2924/00
摘要： An apparatus includes a dielectric slab having first and opposing second major surfaces. A planar antenna element is located on the first major surface. A via formed through the dielectric slab is conductively connected to the antenna element. A plurality of solder bump pads is located on the second major surface and is configured to attach the dielectric slab to an integrated circuit.
摘要翻译： 一种装置包括具有第一和相对的第二主表面的电介质板。 平面天线元件位于第一主表面上。 通过电介质板形成的通孔与天线元件导电连接。 多个焊料凸点焊盘位于第二主表面上，并被构造成将电介质板连接到集成电路。
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公开(公告)号：US08238017B2
公开(公告)日：2012-08-07
申请号：US12641601
申请日：2009-12-18
申请人： Kun-Yii Tu , Ting-Chen Hu , Young-Kai Chen
发明人： Kun-Yii Tu , Ting-Chen Hu , Young-Kai Chen
IPC分类号： G02F1/01
CPC分类号： G02F1/011 , G02F1/0123 , G02F2201/122 , G02F2203/50 , H04B10/60
摘要： An optical path is configured to propagate an input optical signal. A plurality of electrodes are configured to produce a plurality of discrete phase shifts on the optical signal. An output optical signal is phase-shifted with respect to the input optical signal by a sum of the plurality of discrete phase shifts.
摘要翻译： 光路被配置为传播输入光信号。 多个电极被配置为在光信号上产生多个离散相移。 输出光信号相对于输入光信号通过多个离散相移的和进行相移。
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公开(公告)号：US08224134B2
公开(公告)日：2012-07-17
申请号：US12418442
申请日：2009-04-03
CPC分类号： G02B6/4295 , G02B6/12 , G02B6/1228 , H01L31/1105 , H04B10/69
摘要： An optoelectronic receiver and associated method of operation.
摘要翻译： 一种光电接收机及其相关操作方法。
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