公开(公告)号：US08705657B2

公开(公告)日：2014-04-22

申请号：US13159385

申请日：2011-06-13

申请人： Jie-Wei Lai ,  Yang-Chuan Chen

发明人： Jie-Wei Lai ,  Yang-Chuan Chen

IPC分类号： H03C3/00

CPC分类号： H04L27/0008 ,  H04L27/12 ,  H04L27/3427

摘要： A digital signal processing circuit includes a combining stage and an output stage. The combining stage is arranged to receive a plurality of non-overlapping clock signals having a same frequency but different phases, receive a plurality of first input bit streams, and generate a first output bit stream by combining the first input bit streams according to the non-overlapping clock signals. The output stage is arranged to generate an output according to the first output bit stream. A digital signal processing method includes: receiving a plurality of non-overlapping clock signals having a same frequency but different phases; receiving a plurality of first input bit streams; generating a first output bit stream by combining the first input bit streams according to the non-overlapping clock signals; and generating an output according to the first output bit stream.

摘要翻译： 数字信号处理电路包括组合级和输出级。 组合级被布置为接收具有相同频率但不同相位的多个不重叠的时钟信号，接收多个第一输入比特流，并且通过根据非接收方式组合第一输入比特流来生成第一输出比特流， - 重叠的时钟信号。 输出级被布置成根据第一输出位流产生输出。 数字信号处理方法包括：接收具有相同频率但不同相位的多个非重叠时钟信号; 接收多个第一输入比特流; 通过根据所述非重叠时钟信号组合所述第一输入比特流来产生第一输出比特流; 以及根据第一输出比特流生成输出。

公开(公告)号：US08674812B2

公开(公告)日：2014-03-18

申请号：US13220561

申请日：2011-08-29

申请人： Takahiro Fushimi

发明人： Takahiro Fushimi

IPC分类号： H04Q5/22 ,  H03C5/00 ,  H03C3/00 ,  H03D1/24 ,  H04B1/02

CPC分类号： H04N1/00342 ,  H04L1/0003

摘要： In a communication system including a RFID tag, which has a function to record information and a function to carry out wireless communication with an external device and is capable of transmission with using both FM modulation and AM modulation, and a reader/writer for writing and reading information onto and from the RFID tag via wireless communication, a transmission to transmit information from the RFID tag to the reader/writer is carried out with using one of the FM modulation and the AM modulation at the RFID tag. If the reader/writer fails to decode a signal transmitted with using the one of the FM modulation and the AM modulation, transmission with respect to the information is carried out with using the other of the FM modulation and the AM modulation at the RFID tag. In this manner, reading error of data sent from the RFID tag is prevented.

摘要翻译： 在包括RFID标签的通信系统中，其具有记录信息的功能和执行与外部设备的无线通信的功能，并且能够使用FM调制和AM调制两者进行传输，以及读写器用于写入和 通过无线通信将信息读取到RFID标签和从RFID标签读取信息，使用RFID标签中的FM调制和AM调制之一来执行从RFID标签向读写器发送信息的传输。 如果读取器/写入器无法对使用FM调制和AM调制之一发送的信号进行解码，则使用RFID标签中的FM调制和AM调制中的另一个进行相对于该信息的传输。 以这种方式，防止从RFID标签发送的数据的读取错误。

公开(公告)号：US08630370B2

公开(公告)日：2014-01-14

申请号：US13122300

申请日：2009-10-07

申请人： Young-Taek Lee ,  Hoon-Tae Kim

发明人： Young-Taek Lee ,  Hoon-Tae Kim

IPC分类号： H03C3/00

CPC分类号： H04B1/0475 ,  H03C2200/0041 ,  H03D7/18 ,  H03D2200/0045 ,  H03F3/3022 ,  H03F2203/30031 ,  H04B2001/0491 ,  H04L27/364

摘要： An apparatus and a method for increasing Error Vector Magnitude (EVM) performance representing quality of transmission signal are provided. The apparatus and the method suppress an image frequency component generated due to mismatch of IQ channels in order to transmit/receive a large amount of data without distortion in 4th generation wireless communication standard candidate technologies such as a Long Term Evolution (LTE) system and a mobile WiMax system. The apparatus includes a LOcal frequency (LO) buffer including an amplifier. The LO buffer controls the gain and the phase of the amplifier using a control bit for controlling resistor connection.

摘要翻译： 提供了一种用于增加表示传输信号质量的误差矢量幅度（EVM）性能的装置和方法。 该装置和方法抑制由于IQ信道不匹配而产生的图像频率分量，以便在诸如长期演进（LTE）系统和第四代无线通信标准候选技术的第四代无线通信标准候选技术中发送/接收大量数据而不失真 移动WiMax系统。 该装置包括包括放大器的LOcal频率（LO）缓冲器。 LO缓冲器使用用于控制电阻连接的控制位来控制放大器的增益和相位。

公开(公告)号：US08576947B2

公开(公告)日：2013-11-05

申请号：US13089945

申请日：2011-04-19

申请人： Christian Volf Olgaard ,  Ruizu Wang

发明人： Christian Volf Olgaard ,  Ruizu Wang

IPC分类号： H03C3/00

CPC分类号： H04L1/24 ,  H04B7/0413

摘要： Signal conversion circuitry and method for converting a multiple input, multiple output (MIMO) packet data signal transmission to a plurality of complex data samples for processing by shared test equipment, e.g., a single vector signal analyzer (VSA).

摘要翻译： 信号转换电路和用于将多输入多输出（MIMO）分组数据信号传输转换成多个复数数据样本的信号转换电路和方法，用于共享测试设备，例如单个矢量信号分析仪（VSA）的处理。

公开(公告)号：US08493158B2

公开(公告)日：2013-07-23

申请号：US12843445

申请日：2010-07-26

申请人： Sofoklis Plevridis

发明人： Sofoklis Plevridis

IPC分类号： H03C3/00

CPC分类号： H03C5/00

摘要： Polar feedback architecture. A polar modulator, as may be implemented within a transmitter module, of a communication device includes feedback. This feedback involves monitoring of phase information and magnitude/amplitude information of an output signal generated by the polar modulator. The output signal can be a radio frequency (RF) signal such as may be transmitted via a communication channel within a communication system. A baseband processing module processes the monitored phase information and magnitude/amplitude information to perform adjustment of a phase modulator and/or other components within the polar modulator.

摘要翻译： 极地反馈架构。 可以在发射机模块内实现的通信设备的极性调制器包括反馈。 该反馈涉及监视由极性调制器产生的输出信号的相位信息和幅度/振幅信息。 输出信号可以是诸如可以经由通信系统内的通信信道发送的射频（RF）信号。 基带处理模块处理所监视的相位信息和幅度/振幅信息，以执行极化调制器内的相位调制器和/或其它分量的调整。

公开(公告)号：US08405464B2

公开(公告)日：2013-03-26

申请号：US13010396

申请日：2011-01-20

申请人： Neil Gibson ,  Michael Couleur

发明人： Neil Gibson ,  Michael Couleur

IPC分类号： H03B29/00 ,  H03C3/00

CPC分类号： H03K7/06 ,  H03B23/00

摘要： An electronic device controlling a frequency modulation index has a frequency modulation index control loop having an input adapted to be connected to a frequency output of a frequency controllable oscillator. The oscillator has a center frequency Fc and an output adapted to be connected to an input of a frequency-modulation unit, the modulation index control loop being adapted to determine the modulation index. Further provided is a method of frequency-modulating with a modulation frequency Fm a non-linear controllable oscillator having a center frequency Fc with a constant modulation index.

摘要翻译： 控制频率调制指标的电子装置具有频率调制指标控制回路，其具有适于连接到频率可控振荡器的频率输出的输入。 振荡器具有中心频率Fc和适于连接到调频单元的输入的输出，调制指数控制环路适于确定调制指数。 另外提供了一种具有调制频率Fm的频率调制方法，具有具有恒定调制指数的中心频率Fc的非线性可控振荡器。

公开(公告)号：US08400230B2

公开(公告)日：2013-03-19

申请号：US12534044

申请日：2009-07-31

申请人： Philip John Crawley ,  Kenneth William Taylor

发明人： Philip John Crawley ,  Kenneth William Taylor

IPC分类号： H03C3/00

CPC分类号： H03B23/00 ,  G06F1/04

摘要： In an electronic system, a frequency modulator manages clock signals for electromagnetic interference (EMI) reduction. The illustrative frequency modulator comprises a core oscillator, and a clock divider coupled to the core oscillator that modulates frequency of the core oscillator and deterministically spreads clock spectral components of a digital clock signal whereby electromagnetic interference (EMI) is reduced. The frequency modulator further comprises a circuit coupled to the clock divider that receives the digital clock signal, combines the digital clock signal with a data bitstream for transmission across an isolation barrier, and resynchronizes to the digital clock signal.

摘要翻译： 在电子系统中，频率调制器管理用于电磁干扰（EMI）减小的时钟信号。 说明性频率调制器包括核心振荡器和耦合到核心振荡器的时钟分频器，其调制核心振荡器的频率并且确定性地扩展数字时钟信号的时钟频谱分量，从而降低电磁干扰（EMI）。 频率调制器还包括耦合到时钟分频器的电路，其接收数字时钟信号，将数字时钟信号与用于跨隔离屏障传输的数据比特流组合，并与数字时钟信号重新同步。

公开(公告)号：US08369801B2

公开(公告)日：2013-02-05

申请号：US12159121

申请日：2006-12-26

申请人： Yoshito Shimizu ,  Akihiko Matsuoka ,  Tomoya Urushihara

发明人： Yoshito Shimizu ,  Akihiko Matsuoka ,  Tomoya Urushihara

IPC分类号： H04B1/66 ,  H04B17/00 ,  H04B1/04 ,  H03C3/00

CPC分类号： H04B1/0483 ,  H03F1/0222 ,  H03F1/3241 ,  H04B2001/0425

摘要： An object of the invention is to provide a multimode polar modulation device and a multimode radio communication method for making it possible to decrease the distortion compensation processing data capacity while maintaining the distortion compensation accuracy and also making it possible to efficiently store the distortion compensation processing data corresponding to a multimode modulation signal adaptively acquired in memory.At the distortion compensation coefficient calibration operation time of a polar modulation circuit 1901, a control section 1903 selects a modulation signal with a narrower dynamic range of amplitude signal than at the transmission operation time, an adaptive operation control section 1711 measures a spectrum in output of a power amplifier 1 for each predetermined output level, and a distortion compensation processing circuit 1701 finds optimum coefficient information. On the other hand, at the transmission operation time, the optimum coefficient information found according to the above-mentioned procedure is referenced and the optimum coefficient information of a modulation signal with a wide dynamic range of amplitude signal is found.

摘要翻译： 本发明的目的是提供一种多模极化调制装置和多模式无线电通信方法，用于在保持失真补偿精度的同时降低失真补偿处理数据容量，并且还可以有效地存储失真补偿处理数据 对应于在存储器中自适应地获取的多模式调制信号。 在极坐标调制电路1901的失真补偿系数校准操作时间，控制部1903选择振幅信号的动态范围比传输动作时间窄的调制信号，自适应动作控制部1711测定输出的频谱 用于每个预定输出电平的功率放大器1，并且失真补偿处理电路1701找到最佳系数信息。 另一方面，在发送操作时间，参考根据上述过程找到的最佳系数信息，并且找到具有宽幅度信号动态范围的调制信号的最佳系数信息。

公开(公告)号：US08233564B2

公开(公告)日：2012-07-31

申请号：US13198320

申请日：2011-08-04

申请人： Elliot L. Gruenberg ,  Patrick Antaki ,  Dhadesugoor Vaman ,  David N. Judelson

发明人： Elliot L. Gruenberg ,  Patrick Antaki ,  Dhadesugoor Vaman ,  David N. Judelson

IPC分类号： H03C3/00

CPC分类号： H04L27/28 ,  H03H17/0283 ,  H04L5/0007 ,  H04L25/03821 ,  H04L27/2626 ,  H04L2027/0016 ,  H04L2027/0053

摘要： A unique digital compression technology for increasing the information carrying capacity of a bandwidth limited communications path highway by using a combined coding and modulation technique. The inventive technology allows multiple independent modulated data streams to simultaneously and instantaneously share the same bandwidth without cross-channel interference. A matched filter is used to substantially reduce the error rate and utilizes a unique training method based on performing a spectral response test. An algorithm calculates the effect of the unique characteristics of the communications highway on the transmitted signal and generates an ideal signal stored in the matched filter for comparison with received signals.

摘要翻译： 一种独特的数字压缩技术，通过使用组合编码和调制技术来增加带宽有限的通信路径高速公路的信息承载能力。 本发明的技术允许多个独立的调制数据流同时并且瞬时地共享相同的带宽而没有跨信道干扰。 使用匹配滤波器来大大降低误码率，并且利用基于执行频谱响应测试的唯一训练方法。 一种算法计算通信公路的独特特性对发射信号的影响，并产生存储在匹配滤波器中的理想信号，以便与接收信号进行比较。

公开(公告)号：US08198950B2

公开(公告)日：2012-06-12

申请号：US13063127

申请日：2009-10-01

申请人： Shingo Yamanouchi ,  Kazuaki Kunihiro ,  Kazumi Shiikuma

发明人： Shingo Yamanouchi ,  Kazuaki Kunihiro ,  Kazumi Shiikuma

IPC分类号： H03C3/00 ,  H03C3/38

CPC分类号： H03F1/0227 ,  H03F1/0244 ,  H03F1/32 ,  H03F3/24 ,  H03F2200/102 ,  H03F2200/324 ,  H03F2200/351 ,  H03F2200/511

摘要： A power amplifier that amplifies an RF modulation signal containing an amplitude modulation component and a phase modulation component, including a polar modulator that outputs an amplitude component signal that is the amplitude modulation component of the RF modulation signal, a direct current power supply that outputs a direct current voltage, a pulse modulator that pulse-modulates the amplitude component signal, a pulse amplification circuit that amplifies a pulse modulation signal, a combining circuit that adds a direct current voltage that is outputted from the direct current power supply to an output signal of the pulse amplification circuit, a low pass filter that smoothens an output signal of the combining circuit, and an RF amplifier that not only amplifies the RF modulation signal, but also amplitude-modulates the amplified signal with an output signal of the low pass filter and outputs the resultant signal.

摘要翻译： 一种放大包含振幅调制分量和相位调制分量的RF调制信号的功率放大器，包括输出作为RF调制信号的幅度调制分量的振幅成分信号的极性调制器，输出 脉冲调制振幅分量信号的脉冲调制器，放大脉冲调制信号的脉冲放大电路，将从直流电源输出的直流电压与从直流电源输出的直流电压相加的合成电路， 脉冲放大电路，使组合电路的输出信号平滑化的低通滤波器，以及RF放大器，其不仅放大RF调制信号，而且还利用低通滤波器的输出信号来对放大的信号进行幅度调制， 输出结果信号。