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公开(公告)号：US20100026385A1
公开(公告)日：2010-02-04
申请号：US12465623
申请日：2009-05-13
IPC分类号： G01R29/00
CPC分类号： H03F1/3247 , H03F1/3241 , H03F2200/468
摘要： A calibration device for a power amplifier includes a calculation unit, a first storage unit and a multiplier. The calculation unit is utilized for generating a calibration factor according to a value of a characteristic parameter of the power amplifier. The first storage unit coupled to the calculation unit, for storing the calibration factor. The multiplier is coupled to the first storage unit and a baseband unit, for multiplying a baseband signal outputted from the baseband unit by the calibration factor for generating an input signal to the power amplifier.
摘要翻译： 用于功率放大器的校准装置包括计算单元，第一存储单元和乘法器。 计算单元用于根据功率放大器的特性参数的值产生校准因子。 第一存储单元耦合到计算单元，用于存储校准因子。 乘法器耦合到第一存储单元和基带单元，用于将从基带单元输出的基带信号乘以校准因子，以产生输入信号到功率放大器。
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公开(公告)号：US20090238315A1
公开(公告)日：2009-09-24
申请号：US12361043
申请日：2009-01-28
申请人： Yun-Shen CHANG , Jiunn-Tsair CHEN
发明人： Yun-Shen CHANG , Jiunn-Tsair CHEN
IPC分类号： H04B1/10
CPC分类号： H04B7/084
摘要： The present invention discloses a signal processing device and a signal processing method. The signal processing device includes a plurality of receiving devices, a storage module, a weighting module, and a processing module. Each of the receiving devices is capable of receiving an original signal stream, thus the plurality of receiving devices can generate a set of signal streams. The storage module is used for storing a plurality set of signal streams generated by the plurality of receiving devices. The weighting module can generate plurality sets of rotated signal streams according to a reference phase and the plurality sets of signal streams, and further generate a set of weighting signal according to the rotated signal streams. And, the processing module can generate a set of weighting signal streams according to the set of weighting signal and the plurality set of signal streams.
摘要翻译： 本发明公开了一种信号处理装置和信号处理方法。 信号处理装置包括多个接收装置，存储模块，加权模块和处理模块。 每个接收设备能够接收原始信号流，因此多个接收设备可以生成一组信号流。 存储模块用于存储由多个接收装置产生的多组信号流。 加权模块可以根据参考相位和多组信号流产生多组旋转信号流，并且还根据旋转的信号流生成一组加权信号。 并且，处理模块可以根据加权信号和多组信号流生成一组加权信号流。
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3.发明授权Signal transmitting apparatus for OFDM system and parameter adjusting method thereof 失效OFDM系统的信号发送装置及其参数调整方法公开(公告)号：US08576944B2
公开(公告)日：2013-11-05
申请号：US12418068
申请日：2009-04-03
申请人： Jiunn Tsair Chen , Yun Shen Chang , Chih Hung Lin
发明人： Jiunn Tsair Chen , Yun Shen Chang , Chih Hung Lin
CPC分类号： H04L27/2614
摘要： A signal transmitting apparatus for orthogonal frequency division multiplexing (OFDM) system comprises a compandor, a predistortor, a power amplifier and a feedback module. The compandor is configured to compress and expand a transmitted signal. The predistortor is configured to perform a predistortion operation on output signals of the compandor. The power amplifier is configured to amplify output signals of the predistortor. The feedback module is configured to adjust parameters of the compandor and the predistortor based on a feedback signal.
摘要翻译： 用于正交频分复用（OFDM）系统的信号发送装置包括压缩器，预失真器，功率放大器和反馈模块。 压缩器被配置为压缩和扩展发送的信号。 预失真器被配置为对压缩器的输出信号执行预失真操作。 功率放大器配置为放大预驱动器的输出信号。 反馈模块被配置为基于反馈信号调整压缩器和预失真器的参数。
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公开(公告)号：US07816984B2
公开(公告)日：2010-10-19
申请号：US12432767
申请日：2009-04-30
IPC分类号： H03F1/26
CPC分类号： H03F3/24 , H03F1/3247 , H03F3/195 , H03F2200/451 , H03F2201/3233
摘要： A lookup table generation method for a predistorter comprises sending a first single tone signal with a maximum expected amplitude to a channel simulation device including the power amplifier, estimating a closed loop gain and a closed loop phase of the power amplifier according to the first single tone signal and a first simulation output signal generated outputted by the channel simulation device, sending a plurality of single tone signals to the channel simulation device, each single tone signal having an amplitude different from all others of the plurality of single tone signals and lower than the maximum expected amplitude, generating a plurality of predistortion parameters according to the closed loop gain, the closed loop phase, the plurality of single tone signals and a plurality of simulation output signals outputted by the channel simulation device, and storing the plurality of predistortion parameters in a lookup table of the predistorter.
摘要翻译： 用于预失真器的查找表生成方法包括：向包括功率放大器的信道模拟设备发送具有最大预期幅度的第一单音调信号，根据第一单音调估计功率放大器的闭环增益和闭环相位 信号和由信道模拟装置输出的第一模拟输出信号，向信道模拟装置发送多个单音信号，每个单音调信号的振幅不同于多个单音信号中的所有其他频率，并低于 最大预期幅度，根据闭环增益，闭环相位，多个单音信号和由信道模拟装置输出的多个模拟输出信号产生多个预失真参数，并将多个预失真参数存储在 预失真器的查找表。
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5.发明申请公开(公告)号：US20080122627A1
公开(公告)日：2008-05-29
申请号：US11674677
申请日：2007-02-14
申请人： Yun-Shen Chang , Ya-Ping Chen , Jiunn-Tsair Chen , Ze-Yao Chang
发明人： Yun-Shen Chang , Ya-Ping Chen , Jiunn-Tsair Chen , Ze-Yao Chang
IPC分类号： G08B13/14
CPC分类号： G06K7/0008 , G06K7/10079 , G08B13/2485
摘要： A method and an apparatus for reading radio frequency identification (RFID) tags are provided. First, an omni-directional radio frequency signal is emitted out to omni-directionally scan RFID tags. Then, a radio frequency signal composed of P beams is emitted directed to P specific directions, and a spatial matched filter processing is performed to read the RFID tags in P specific directions, wherein P is an integer larger than or equal to 1. In order to scan all the directions, the method adjusts angles of P specific directions and repeats the steps of emitting beams and filtering, and thereby reading the RFID tags in all the directions. Therefore, the method and apparatus of the present invention can simultaneously read a plurality of RFID tags and enlarge the scan range and effective read rate without increasing the transmit power.
摘要翻译： 提供了一种用于读取射频识别（RFID）标签的方法和装置。 首先，发射全向射频信号以全方位扫描RFID标签。 然后，将由P个波束组成的射频信号发射到P个特定方向，并且执行空间匹配滤波处理以沿P个特定方向读取RFID标签，其中P是大于或等于1的整数。按顺序 扫描所有方向，该方法调整P特定方向的角度，并重复发射光束和滤波的步骤，从而在所有方向上读取RFID标签。 因此，本发明的方法和装置可以同时读取多个RFID标签，并且在不增加发送功率的情况下扩大扫描范围和有效读取速率。
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公开(公告)号：US08144823B2
公开(公告)日：2012-03-27
申请号：US12361043
申请日：2009-01-28
申请人： Yun-Shen Chang , Jiunn-Tsair Chen
发明人： Yun-Shen Chang , Jiunn-Tsair Chen
IPC分类号： H03D1/04
CPC分类号： H04B7/084
摘要： The present invention discloses a signal processing device and a signal processing method. The signal processing device includes a plurality of receiving devices, a storage module, a weighting module, and a processing module. Each of the receiving devices is capable of receiving an original signal stream, thus the plurality of receiving devices can generate a set of signal streams. The storage module is used for storing a plurality set of signal streams generated by the plurality of receiving devices. The weighting module can generate plurality sets of rotated signal streams according to a reference phase and the plurality sets of signal streams, and further generate a set of weighting signal according to the rotated signal streams. And, the processing module can generate a set of weighting signal streams according to the set of weighting signal and the plurality set of signal streams.
摘要翻译： 本发明公开了一种信号处理装置和信号处理方法。 信号处理装置包括多个接收装置，存储模块，加权模块和处理模块。 每个接收设备能够接收原始信号流，因此多个接收设备可以生成一组信号流。 存储模块用于存储由多个接收装置产生的多组信号流。 加权模块可以根据参考相位和多组信号流产生多组旋转信号流，并且还根据旋转的信号流生成一组加权信号。 并且，处理模块可以根据加权信号和多组信号流生成一组加权信号流。
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7.发明申请SIGNAL TRANSMITTING APPARATUS FOR OFDM SYSTEM AND PARAMETER ADJUSTING METHOD THEREOF 失效OFDM系统的信号发送装置及其参数调整方法公开(公告)号：US20090262862A1
公开(公告)日：2009-10-22
申请号：US12418068
申请日：2009-04-03
申请人： Jiunn Tsair Chen , Yun Shen Chang , Chih Hung Lin
发明人： Jiunn Tsair Chen , Yun Shen Chang , Chih Hung Lin
IPC分类号： H04L27/36
CPC分类号： H04L27/2614
摘要： A signal transmitting apparatus for orthogonal frequency division multiplexing (OFDM) system comprises a compandor, a predistortor, a power amplifier and a feedback module. The compandor is configured to compress and expand a transmitted signal. The predistortor is configured to perform a predistortion operation on output signals of the compandor. The power amplifier is configured to amplify output signals of the predistortor. The feedback module is configured to adjust parameters of the compandor and the predistortor based on a feedback signal.
摘要翻译： 用于正交频分复用（OFDM）系统的信号发送装置包括压缩器，预失真器，功率放大器和反馈模块。 压缩器被配置为压缩和扩展发送的信号。 预失真器被配置为对压缩器的输出信号执行预失真操作。 功率放大器配置为放大预驱动器的输出信号。 反馈模块被配置为基于反馈信号调整压缩器和预失真器的参数。
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公开(公告)号：US07863975B2
公开(公告)日：2011-01-04
申请号：US12465623
申请日：2009-05-13
IPC分类号： G01R19/00
CPC分类号： H03F1/3247 , H03F1/3241 , H03F2200/468
摘要： A calibration device for a power amplifier includes a calculation unit, a first storage unit and a multiplier. The calculation unit is utilized for generating a calibration factor according to a value of a characteristic parameter of the power amplifier. The first storage unit coupled to the calculation unit, for storing the calibration factor. The multiplier is coupled to the first storage unit and a baseband unit, for multiplying a baseband signal outputted from the baseband unit by the calibration factor for generating an input signal to the power amplifier.
摘要翻译： 用于功率放大器的校准装置包括计算单元，第一存储单元和乘法器。 计算单元用于根据功率放大器的特性参数的值产生校准因子。 第一存储单元耦合到计算单元，用于存储校准因子。 乘法器耦合到第一存储单元和基带单元，用于将从基带单元输出的基带信号乘以校准因子，以产生输入信号到功率放大器。
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公开(公告)号：US20100097137A1
公开(公告)日：2010-04-22
申请号：US12432767
申请日：2009-04-30
IPC分类号： H03F1/26
CPC分类号： H03F3/24 , H03F1/3247 , H03F3/195 , H03F2200/451 , H03F2201/3233
摘要： A lookup table generation method for a predistorter comprises sending a first single tone signal with a maximum expected amplitude to a channel simulation device including the power amplifier, estimating a closed loop gain and a closed loop phase of the power amplifier according to the first single tone signal and a first simulation output signal generated outputted by the channel simulation device, sending a plurality of single tone signals to the channel simulation device, each single tone signal having an amplitude different from all others of the plurality of single tone signals and lower than the maximum expected amplitude, generating a plurality of predistortion parameters according to the closed loop gain, the closed loop phase, the plurality of single tone signals and a plurality of simulation output signals outputted by the channel simulation device, and storing the plurality of predistortion parameters in a lookup table of the predistorter.
摘要翻译： 用于预失真器的查找表生成方法包括：向包括功率放大器的信道模拟设备发送具有最大预期幅度的第一单音调信号，根据第一单音调估计功率放大器的闭环增益和闭环相位 信号和由信道模拟装置输出的第一模拟输出信号，向信道模拟装置发送多个单音信号，每个单音调信号的振幅不同于多个单音信号中的所有其他频率，并低于 最大预期幅度，根据闭环增益，闭环相位，多个单音信号和由信道模拟装置输出的多个模拟输出信号产生多个预失真参数，并将多个预失真参数存储在 预失真器的查找表。
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