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公开(公告)号：US20090022240A1
公开(公告)日：2009-01-22
申请号：US11591405
申请日：2006-11-01
IPC分类号： H04L25/49
CPC分类号： H03F3/602 , H03F1/0205 , H03F1/0277 , H03F3/211 , H03F3/24 , H03F3/72 , H03F2200/336 , H03F2200/451 , H03F2203/21112 , H03F2203/7236 , H04L27/2601
摘要： A low power distributed transmitter includes a signal generator, signal partitioning module, signal processing module, a plurality of amplifiers, and a transmitting module. The signal generator is operably coupled to generate a signal to represent base-band data in accordance with a particular transmission protocol. The signal partitioning module is operably coupled to partition the signal into a plurality of signal partitions based on a peak-to-average ratio of the signal. The signal processing module processes the plurality of signal partitions to in accordance with the particular transmission protocol to produce processed signals. Each of the amplifiers amplifies a corresponding one of the processed signal partitions to produce amplified signal partitioned. The transmitting module transmits, via an antenna or a plurality of antennas, the amplified signal partitions as a composite amplified signal.
摘要翻译： 低功率分布式发射机包括信号发生器，信号分配模块，信号处理模块，多个放大器和发射模块。 信号发生器可操作地耦合以产生根据特定传输协议来表示基带数据的信号。 信号分割模块可操作地耦合以基于信号的峰均比来将信号划分成多个信号分区。 信号处理模块根据特定的传输协议处理多个信号分区，以产生经处理的信号。 每个放大器放大对应的一个经处理的信号分区以产生分频的放大信号。 发送模块经由天线或多个天线将放大的信号分区作为复合放大信号发送。
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公开(公告)号：US20060067423A1
公开(公告)日：2006-03-30
申请号：US11281164
申请日：2005-11-16
CPC分类号： H03K7/08 , H03F3/191 , H03F3/217 , H03F3/24 , H04B2001/0408 , H04L25/4902
摘要： A low power radio transmitter includes an intermediate frequency stage, signal-to-pulse conversion module, and a power amplifier. The intermediate frequency stage up-converts the frequency of a base-band digital signal into an N-bit signal at the intermediate frequency. The signal-to-pulse conversion module converts the N-bit signal at the intermediate frequency into a pulse signal of M-bits at the radio frequency. As such, the signal-to-pulse conversion module is taking an N-bit signal (e.g., an 8-bit digital signal) and converting it into an M-bit pulse signal (e.g., a 1-bit pulse stream). Accordingly, the M-bit signal at the radio frequency is essentially a square-wave, which has a peak to average ratio of zero, is subsequently amplified by the power amplifier.
摘要翻译： 低功率无线电发射机包括中频级，信号到脉冲转换模块和功率放大器。 中频级将基带数字信号的频率上变频为中频的N位信号。 信号脉冲转换模块将中频处的N位信号转换为射频M位的脉冲信号。 因此，信号到脉冲转换模块正在获取N位信号（例如，8位数字信号）并将其转换为M位脉冲信号（例如，1位脉冲流）。 因此，射频的M位信号本质上是具有峰均比为零的方波，随后由功率放大器放大。
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公开(公告)号：US06147634A
公开(公告)日：2000-11-14
申请号：US211616
申请日：1998-12-15
申请人： Giri N Rangan , Mathew A Rybicki
发明人： Giri N Rangan , Mathew A Rybicki
IPC分类号： H03M3/00
摘要： A method and apparatus for digital to analog signal conversions with reduced noise include processing that begins by receiving a digital signal and filtering the digital signal to produce a filtered digital signal. The filtering is tuned to attenuate components of the digital signal having frequencies near one-half the sampling rate frequency and to pass other components of the digital signal having frequencies away from one-half the sampling rate frequency. The filtered signals are then converted to analog signals based on a clock signal having a sampling rate frequency and a voltage reference.
摘要翻译： 用于具有降低噪声的数模转换信号转换的方法和装置包括通过接收数字信号并对数字信号进行滤波以产生经滤波的数字信号开始的处理。 滤波被调谐以衰减具有接近采样率频率的一半的频率的数字信号的分量，并且使得数字信号的其他分量具有远离采样频率的一半的频率。 然后，滤波后的信号基于具有采样率频率和电压基准的时钟信号转换成模拟信号。
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4.发明授权Flexible asymmetrical digital subscriber line (ADSL) receiver, central office using same, and method therefor 失效灵活的非对称数字用户线路（ADSL）接收机，中心局使用方法及其方法
公开(公告)号：US5742527A
公开(公告)日：1998-04-21
申请号：US616818
申请日：1996-03-15
申请人： Mathew A. Rybicki , Michael R. May , Matthew A. Pendleton , Terence L. Johnson , Peter R. Molnar
发明人： Mathew A. Rybicki , Michael R. May , Matthew A. Pendleton , Terence L. Johnson , Peter R. Molnar
IPC分类号： H04L25/02 , H04J11/00 , H04L25/03 , H04L27/26 , H04M11/06 , H04Q11/02 , H04Q11/04 , H04L5/20
CPC分类号： H04L27/2649 , H04Q11/0435 , H04Q2213/13034 , H04Q2213/13107 , H04Q2213/1313 , H04Q2213/1319 , H04Q2213/13199 , H04Q2213/13209 , H04Q2213/13376 , H04Q2213/13396
摘要： An ADSL receiver (200) receives an upstream modified ADSL signal and an ISDN signal from a remote terminal (32) on a twisted-pair copper wire (18). An ADSL transmitter (100) of the remote terminal (32) transmits the ADSL signal in a frequency range above an ISDN frequency range so that the ADSL signal does not overlap the frequency range of the ISDN signal. In one embodiment, the ADSL receiver (200) includes a band pass filter (201), an analog-to-digital converter (203), a decimator (205), a fast Fourier transform (210), and a digital signal processor (212). The decimator (205) converts the ADSL signal back to base band, thus allowing an ADSL signal source to simultaneously utilize the telephone line with an ISDN signal source, without significantly reducing ADSL throughput.
摘要翻译： ADSL接收机（200）从双绞铜线（18）上的远程终端（32）接收上游修改的ADSL信号和ISDN信号。 远程终端（32）的ADSL发射机（100）在ISDN频率范围之外的频率范围内发送ADSL信号，使得ADSL信号不与ISDN信号的频率范围重叠。 在一个实施例中，ADSL接收器（200）包括带通滤波器（201），模数转换器（203），抽取器（205），快速傅里叶变换（210）和数字信号处理器 212）。 抽取器（205）将ADSL信号转换回基带，从而允许ADSL信号源同时利用电话线与ISDN信号源，而不显着降低ADSL吞吐量。
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5.发明授权Method and apparatus for providing a high current driver on integrated circuits 失效在集成电路上提供高电流驱动器的方法和装置
公开(公告)号：US5635936A
公开(公告)日：1997-06-03
申请号：US316681
申请日：1994-09-30
申请人： Mathew A. Rybicki
发明人： Mathew A. Rybicki
摘要： An integrated circuit (100) may provide a high current, wide band, high fidelity output by providing a digital signal source (101) coupled to a first digital to analog source (102) and a second digital to analog source (103). The first digital to analog source (102) has a first power factor and a first fidelity factor, while the second digital to analog source (103) has a second power factor and a second fidelity factor, wherein the first power factor is greater than the second power factor. The outputs of the first and second digital to analog sources (107 and 108) are combined to provide a resultant (109), wherein the resultant (109) has a third power factor which is in the range of the first power factor and has a third fidelity factor which is greater than either the first fidelity factor the second fidelity factor.
摘要翻译： 集成电路（100）可以通过提供耦合到第一数字到模拟源（102）和第二数字到模拟源（103）的数字信号源（101）来提供高电流，宽带，高保真输出。 第一数字到模拟源（102）具有第一功率因数和第一保真度因子，而第二数模转换源（103）具有第二功率因数和第二保真因子，其中第一功率因数大于 第二功率因数。 第一和第二数字到模拟源（107和108）的输出被组合以提供结果（109），其中结果（109）具有处于第一功率因数范围内的第三功率因数，并且具有 第三保真度因子大于第一保真因子第二保真因子。
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公开(公告)号：US4691125A
公开(公告)日：1987-09-01
申请号：US915837
申请日：1986-10-03
申请人： Mathew A. Rybicki
发明人： Mathew A. Rybicki
IPC分类号： G11C27/02
CPC分类号： G11C27/026
摘要： A switched capacitor sample-and-hold circuit which compensates offset voltage error and switch feedthru error while having a one hundred percent duty cycle is provided. Two amplifiers are utilized. A first operational amplifier is disconnected from a second operational amplifier while being autozeroed. An input voltage is sampled onto an input capacitor. The input capacitor is disconnected from the input voltage and then coupled to the second operational amplifier which is in a unity gain configuration. After the sampled input voltage is charged onto an output load, the first operational amplifier is disconnected from the second operational amplifier and the sampling process is repeated. The second operational amplifier is also offset voltage compensated by the first operational amplifier.
摘要翻译： 提供了开关电容器采样保持电路，其补偿偏移电压误差并且在百分之百占空比时切换馈通误差。 使用两个放大器。 第一运算放大器在被自动归零的情况下与第二运算放大器断开连接。 输入电压被采样到输入电容器上。 输入电容器与输入电压断开，然后耦合到处于单位增益配置的第二运算放大器。 在将采样的输入电压充电到输出负载之后，第一运算放大器与第二运算放大器断开连接，并重复采样过程。 第二运算放大器也由第一运算放大器进行偏移电压补偿。
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公开(公告)号：US08457264B2
公开(公告)日：2013-06-04
申请号：US10944509
申请日：2004-09-17
IPC分类号： H04B1/10
CPC分类号： H04B7/0857
摘要： A radio receiver includes a first diversity antenna structure, a second diversity antenna structure, a first RF receiver section, a second RF receiver section, a combining module, and a baseband processing module. The first diversity antenna structure provides the received inbound RF signals from one of the plurality of first antennas based on a first antenna selection signal to produce first received inbound RF signals. The second diversity antenna structure provides the received inbound RF signals from one of the plurality of second antennas based on a second antenna selection signal to produce second received inbound RF signals. The first and second RF receiver sections are operably coupled to convert the first and second received inbound RF signals into first and second inbound baseband signals, respectively. The combining module combines the first and second inbound baseband signals to produce inbound baseband signals.
摘要翻译： 无线电接收机包括第一分集天线结构，第二分集天线结构，第一RF接收机部分，第二RF接收机部分，组合模块和基带处理模块。 第一分集天线结构基于第一天线选择信号提供来自多个第一天线之一的接收入站RF信号，以产生第一接收的入站RF信号。 第二分集天线结构基于第二天线选择信号提供来自多个第二天线之一的接收的入站RF信号，以产生第二接收的入站RF信号。 第一和第二RF接收机部分可操作地耦合以分别将第一和第二接收入站RF信号转换成第一和第二入站基带信号。 组合模块组合第一和第二入站基带信号以产生入站基带信号。
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公开(公告)号：US07555059B2
公开(公告)日：2009-06-30
申请号：US11591405
申请日：2006-11-01
CPC分类号： H03F3/602 , H03F1/0205 , H03F1/0277 , H03F3/211 , H03F3/24 , H03F3/72 , H03F2200/336 , H03F2200/451 , H03F2203/21112 , H03F2203/7236 , H04L27/2601
摘要： A low power distributed transmitter includes a signal generator, signal partitioning module, signal processing module, a plurality of amplifiers, and a transmitting module. The signal generator is operably coupled to generate a signal to represent base-band data in accordance with a particular transmission protocol. The signal partitioning module is operably coupled to partition the signal into a plurality of signal partitions based on a peak-to-average ratio of the signal. The signal processing module processes the plurality of signal partitions to in accordance with the particular transmission protocol to produce processed signals. Each of the amplifiers amplifies a corresponding one of the processed signal partitions to produce amplified signal partitioned. The transmitting module transmits, via an antenna or a plurality of antennas, the amplified signal partitions as a composite amplified signal.
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公开(公告)号：US20080159564A1
公开(公告)日：2008-07-03
申请号：US11873005
申请日：2007-10-16
IPC分类号： H03G5/00
CPC分类号： H03G5/00
摘要： An audio codec includes an input for receiving audio information. Audio processing circuitry produces a first stereo audio signal, a second stereo audio signal, and a monotone audio signal based on the audio information. A low pass filter filters the monotone audio output, wherein the low pass filter passes a bass component of the monotone audio signal substantially unattenuated and attenuates higher frequency components of the monotone audio signal. A high pass filter filters the first stereo audio output, wherein the high passes filter passes a treble component of the first stereo audio signal substantially unattenuated and attenuates lower frequency components of the first stereo audio signal. A band pass filter filters the second stereo audio output, wherein the band pass filter passes a mid band component of the second audio signal substantially unattenuated and attenuates low frequency components and high frequency components of the second stereo audio signal. A summing module produces a tone controlled audio output.
摘要翻译： 音频编解码器包括用于接收音频信息的输入。 音频处理电路基于音频信息产生第一立体声音频信号，第二立体声音频信号和单调音频信号。 低通滤波器对单调音频输出进行滤波，其中低通滤波器使单调音频信号的低音分量基本上不衰减，并且衰减单调音频信号的较高频率分量。 高通滤波器对第一立体声音频输出进行滤波，其中高通滤波器使第一立体声音频信号的高音分量基本上不衰减，并且衰减第一立体声音频信号的较低频率分量。 带通滤波器对第二立体声音频输出进行滤波，其中带通滤波器使第二音频信号的中频带分量基本上不衰减，并且衰减第二立体声音频信号的低频分量和高频分量。 求和模块产生音调控制音频输出。
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公开(公告)号：US6128354A
公开(公告)日：2000-10-03
申请号：US197653
申请日：1998-11-23
CPC分类号： H04L25/063 , H04L25/4902
摘要： A pre-amplifier circuit, which may be used in a variety of data recovery circuits to accurately recover data transmissions, includes an input regulatory circuit, a feedback circuit, and an amplifier. The input regulatory circuit regulates the magnitude of the data signal provided to the amplifier based on feedback signals from a feedback circuit. For low level data signals, the input regulatory circuit provides a fill, or almost full, representation of the data signal to the amplifier for amplification. But, when the data signal levels increase, the input regulatory circuit attenuates, based on the feedback signals, the data signals more and more before providing them to the amplifier, such that the output of the amplifier stays within a certain range.
摘要翻译： 可以用于各种数据恢复电路以准确地恢复数据传输的前置放大器电路包括输入调节电路，反馈电路和放大器。 输入调节电路基于来自反馈电路的反馈信号来调节提供给放大器的数据信号的幅度。 对于低电平数据信号，输入调节电路向放大器提供数据信号的填充或几乎全部的表示，用于放大。 但是，当数据信号电平增加时，输入调节电路在将它们提供给放大器之前，越来越多地基于反馈信号衰减数据信号，使得放大器的输出保持在一定范围内。
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