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公开(公告)号：US07835461B2
公开(公告)日：2010-11-16
申请号：US11281164
申请日：2005-11-16
IPC分类号： H04L27/04
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：US20090034660A1
公开(公告)日：2009-02-05
申请号：US12246403
申请日：2008-10-06
IPC分类号： H04L27/06
CPC分类号： H03K7/08 , H03F3/191 , H03F3/217 , H03F3/24 , H04B2001/0408 , H04L25/4902
摘要： A radio receiver includes a low-noise amplifier, pulse-to-signal conversion module, and intermediate frequency stage. The low-noise amplifier is operably coupled to receive and amplify an M-bit signal at a radio frequency. The M-bit signal at a radio frequency is representative of a pulse signal that is carried on a radio frequency. The pulse-to-signal conversion module demodulates the M-bit signal to produce an N-bit signal at an intermediate frequency. For example, the pulse-to-signal conversion module performs pulse-width demodulation, pulse-density demodulation, or pulse-position demodulation to recapture the N-bit signal. The intermediate frequency stage steps down the frequency of the N-bit signal to produce a base-band digital signal.
摘要翻译： 无线电接收机包括低噪声放大器，脉冲到信号转换模块和中频级。 低噪声放大器可操作地耦合以在射频上接收和放大M位信号。 无线电频率下的M位信号代表无线电频率上携带的脉冲信号。 脉冲信号转换模块解调M位信号以产生中频的N位信号。 例如，脉冲到信号转换模块执行脉冲宽度解调，脉冲密度解调或脉冲位置解调以重新捕获N位信号。 中频级降低N位信号的频率以产生基带数字信号。
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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：US07106715B1
公开(公告)日：2006-09-12
申请号：US09990896
申请日：2001-11-16
申请人： James Robert Kelton , Michael David Cave , James Ward Girardeau, Jr. , Michael R. May , Paul Morris Astrachan , Anselmo Pilla , James Doyle , Shawn Saleem , Mathew A. Rybicki
发明人： James Robert Kelton , Michael David Cave , James Ward Girardeau, Jr. , Michael R. May , Paul Morris Astrachan , Anselmo Pilla , James Doyle , Shawn Saleem , Mathew A. Rybicki
CPC分类号： H04L41/0803 , H04L41/0896 , H04W28/18 , H04W52/241 , H04W52/28
摘要： A system is provided for transmitting data to a plurality of devices. A data source receives data from a video broadcasting source, such as a digital television provides, through a data cable. The data source identifies devices to receive particular sets of data, such as particular programs, from the data cable. The data source identifies particular settings for transmitting to particular devices. The data source adjusts a transmission power to a first device to efficiently provide data reliably to the first device. The data source can assign more or less power for transmitting data to the first device. The data source provides data to the source device using a first data channel. The data source provides data to a second device using a second data channel. The data source receives acknowledgements and control information from the first device and the second device using the second data channel.
摘要翻译： 提供了一种用于将数据发送到多个设备的系统。 数据源通过数据电缆从诸如数字电视的视频广播源接收数据。 数据源识别从数据电缆接收特定数据集合（例如特定程序）的设备。 数据源标识用于发送到特定设备的特定设置。 数据源调整到第一设备的传输功率，以有效地向第一设备提供数据。 数据源可以分配更多或更少的功率以将数据发送到第一设备。 数据源使用第一数据通道向源设备提供数据。 数据源使用第二数据信道向第二设备提供数据。 数据源使用第二数据信道从第一设备和第二设备接收确认和控制信息。
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公开(公告)号：US09655069B2
公开(公告)日：2017-05-16
申请号：US13228547
申请日：2011-09-09
CPC分类号： H04W52/52 , H04W52/241 , H04W52/243 , H04W52/367
摘要： A method includes generating an indicator of interference introduced by a transmitter into a spectrum of an output transmit signal outside a target channel of the transmitter. The indicator is generated based on the output transmit signal. The method includes adjusting a power level of the output transmit signal based on the indicator and a predetermined interference indicator level. The indicator may indicate a carrier-to-interference (C/I) ratio of the output transmit signal, and the adjusting comprises setting the power level of the output transmit signal to a maximum power level that maintains the C/I ratio of the output transmit signal above the predetermined interference indicator level. The output transmit signal may be based on a radio-frequency output of a power amplifier of the transmitter prior to transmission over a channel and the generating comprises generating a baseband version of the output transmit signal.
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公开(公告)号：US20130065544A1
公开(公告)日：2013-03-14
申请号：US13228547
申请日：2011-09-09
IPC分类号： H04W52/24
CPC分类号： H04W52/52 , H04W52/241 , H04W52/243 , H04W52/367
摘要： A method includes generating an indicator of interference introduced by a transmitter into a spectrum of an output transmit signal outside a target channel of the transmitter. The indicator is generated based on the output transmit signal. The method includes adjusting a power level of the output transmit signal based on the indicator and a predetermined interference indicator level. The indicator may indicate a carrier-to-interference (C/I) ratio of the output transmit signal, and the adjusting comprises setting the power level of the output transmit signal to a maximum power level that maintains the C/I ratio of the output transmit signal above the predetermined interference indicator level. The output transmit signal may be based on a radio-frequency output of a power amplifier of the transmitter prior to transmission over a channel and the generating comprises generating a baseband version of the output transmit signal.
摘要翻译： 一种方法包括将由发射机引入的干扰的指示符生成到发射机的目标信道之外的输出发射信号的频谱中。 该指示符是基于输出发送信号产生的。 该方法包括基于指示符和预定的干扰指标级调整输出发送信号的功率电平。 指示符可以指示输出发送信号的载波干扰（C / I）比，并且调整包括将输出发送信号的功率电平设置为维持输出的C / I比的最大功率电平 发射信号高于预定干扰指示器电平。 输出发送信号可以基于在通过信道发送之前发射机的功率放大器的射频输出，并且生成包括生成输出发送信号的基带版本。
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