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1. 发明授权

US07411935B2 Selecting the data rate of a wireless network link according to a measure of error vector magnitude 有权
标题翻译：根据误差矢量大小的测量选择无线网络链路的数据速率
公开(公告)号：US07411935B2
公开(公告)日：2008-08-12
申请号：US11099115
申请日：2005-04-05
申请人： Philip J. Ryan , Andrew R. Adams , Brian Hart , Jason R. Crawford , Andrew F. Myles
发明人： Philip J. Ryan , Andrew R. Adams , Brian Hart , Jason R. Crawford , Andrew F. Myles
IPC分类号： H04Q7/24
CPC分类号： H04W48/20 , H04L1/0002 , H04L1/0015 , H04L1/0026 , H04L1/206 , H04L5/0091 , H04W24/00 , H04W84/12 , H04W84/18
摘要： An apparatus in a node of a wireless network for setting the data rate for sending data to a remote node, and a method for setting the data rate. The method includes receiving a packet from the remote node, determining a measure of signal quality for the received packet; and selecting the data rate for communicating to the remote node according to at least the determined signal quality. The measure of signal quality is a measure of the EVM of the received packet. One implementation conforms to one or more variants of the IEEE 802.11 standard that uses OFDM packets.
摘要翻译：无线网络节点中的设备，用于将用于向远程节点发送数据的数据速率设置，以及用于设置数据速率的方法。该方法包括从远程节点接收分组，确定所接收分组的信号质量的度量; 以及至少根据所确定的信号质量选择用于与所述远程节点通信的数据速率。信号质量的度量是接收到的分组的EVM的度量。一个实现符合使用OFDM分组的IEEE 802.11标准的一个或多个变体。

2. 发明授权

US06898198B1 Selecting the data rate of a wireless network link according to a measure of error vector magnitude 有权
标题翻译：根据误差矢量大小的测量选择无线网络链路的数据速率
公开(公告)号：US06898198B1
公开(公告)日：2005-05-24
申请号：US10367010
申请日：2003-02-14
申请人： Philip J. Ryan , Andrew R. Adams , Brian Hart , Jason R. Crawford , Andrew F. Myles
发明人： Philip J. Ryan , Andrew R. Adams , Brian Hart , Jason R. Crawford , Andrew F. Myles
IPC分类号： H04L12/28 , H04L12/56 , H04W24/00 , H04W48/20 , H04W84/12 , H04W84/18 , H04Q7/24
CPC分类号： H04W48/20 , H04L1/0002 , H04L1/0015 , H04L1/0026 , H04L1/206 , H04L5/0091 , H04W24/00 , H04W84/12 , H04W84/18
摘要： An apparatus in a node of a wireless network for setting the data rate for sending data to a remote node, and a method for setting the data rate. The method includes receiving a packet from the remote node, determining a measure of signal quality for the received packet; and selecting the data rate for communicating to the remote node according to at least the determined signal quality. The measure of signal quality is a measure of the EVM of the received packet. One implementation conforms to one or more variants of the IEEE 802.11 standard that uses OFDM packets.
摘要翻译：无线网络节点中的设备，用于将用于向远程节点发送数据的数据速率设置，以及用于设置数据速率的方法。该方法包括从远程节点接收分组，确定所接收分组的信号质量的度量; 以及至少根据所确定的信号质量选择用于与所述远程节点通信的数据速率。信号质量的度量是接收到的分组的EVM的度量。一个实现符合使用OFDM分组的IEEE 802.11标准的一个或多个变体。

3. 发明授权

US07212798B1 Adaptive AGC in a wireless network receiver 有权
标题翻译：无线网络接收机中的自适应AGC
公开(公告)号：US07212798B1
公开(公告)日：2007-05-01
申请号：US10622175
申请日：2003-07-17
申请人： Andrew R. Adams , Philip J. Ryan , Brian Hart
发明人： Andrew R. Adams , Philip J. Ryan , Brian Hart
IPC分类号： H04B17/00
CPC分类号： H04W52/52 , H03G3/3068
摘要： An apparatus, a carrier medium storing instructions to implement a method, and a method for controlling the gain of a radio receiver for receiving packets of information in a wireless network. The receiver is connected to an antenna subsystem and has receive signal path including a plurality of sections including a first section coupled to the antenna subsystem and a next section. Each section has an adjustable gain and is able to provide a measure of the signal strength at its output. The method includes waiting for a start of packet indication, providing a measure of the signal strength at the output of the first section and the next section, and adjusting the gains of the first and the next sections using the provided measured signal strengths. In one embodiment, the receive signal path includes a filter, the provided measure for the first section is before the filter, and the provided measure for the second section is after the filter. The gain adjusting sets first section's gain according to the measured signal strength at the output of the first section and sets the next section's gain according to the provided measure of signal strength at the output of the next section relative to the provided measure of signal strength at the output of the first section. In one embodiment, the gain adjusting o is carried out in sequential AGC stages, one stage setting the gain of one or more sections.
摘要翻译：存储用于实现方法的指令的装置，载体介质以及用于控制无线电接收机的增益的方法，用于在无线网络中接收信息分组。接收机连接到天线子系统，并且具有包括多个部分的接收信号路径，所述多个部分包括耦合到天线子系统的第一部分和下一部分。每个部分都有一个可调节的增益，能够提供其输出信号强度的测量。该方法包括等待分组指示的开始，提供在第一部分和下一部分的输出处的信号强度的测量，以及使用所提供的测量信号强度来调整第一和下一个部分的增益。在一个实施例中，接收信号路径包括滤波器，所提供的第一部分的测量在滤波器之前，并且所提供的第二部分的测量值在滤波器之后。增益调整根据第一部分输出端的测量信号强度设置第一部分的增益，并根据提供的下一部分输出端的信号强度相对于所提供的信号强度测量值来设置下一部分的增益第一部分的输出。在一个实施例中，增益调整o在连续AGC阶段中执行，一个阶段设置一个或多个部分的增益。

4. 发明授权

US07304969B2 Automatic gain control and low power start-of-packet detection for a wireless LAN receiver 有权
标题翻译：无线LAN接收机的自动增益控制和低功率启动包检测
公开(公告)号：US07304969B2
公开(公告)日：2007-12-04
申请号：US11557728
申请日：2006-11-08
申请人： Philip J. Ryan , Andrew R. Adams , John D. O'Sullivan , Uri Parker , Brian Hart , Grzegorz B. Zyner
发明人： Philip J. Ryan , Andrew R. Adams , John D. O'Sullivan , Uri Parker , Brian Hart , Grzegorz B. Zyner
IPC分类号： H04Q7/00
CPC分类号： H03G3/3078
摘要： A digital AGC system for burst operation, particularly suited for receiving packets in a wireless local area network. One embodiment includes a log detector that provides a signal strength measure, called the received signal strength indication (RSSI) over a wide dynamic range. The AGC system includes estimating the power in a received signal by averaging the log of the signal power. The Start of Packet detection avoids using the radio receiver's main analog to digital converters to preserve power.
摘要翻译：一种用于突发操作的数字AGC系统，特别适用于在无线局域网中接收分组。一个实施例包括在宽动态范围内提供称为接收信号强度指示（RSSI）的信号强度测量的对数检测器。 AGC系统包括通过对信号功率的对数求平均来估计接收信号中的功率。分组检测的开始避免使用无线电接收机的主要模数转换器来保持功率。

5. 发明授权

US07151759B1 Automatic gain control and low power start-of-packet detection for a wireless LAN receiver 有权
标题翻译：无线LAN接收机的自动增益控制和低功率启动包检测
公开(公告)号：US07151759B1
公开(公告)日：2006-12-19
申请号：US10095668
申请日：2002-03-08
申请人： Philip J. Ryan , Andrew R. Adams , John D. O'Sullivan , Uri Parker , Brian Hart , Grzegorz B. Zyner
发明人： Philip J. Ryan , Andrew R. Adams , John D. O'Sullivan , Uri Parker , Brian Hart , Grzegorz B. Zyner
IPC分类号： H04Q7/00
CPC分类号： H03G3/3078
摘要： A digital AGC system for burst operation, particularly suited for receiving packets in a wireless local area network. One embodiment includes a log detector that provides a signal strength measure, called the received signal strength indication (RSSI) over a wide dynamic range. The AGC system includes estimating the power in a received signal by averaging the log of the signal power. The Start of Packet detection avoids using the radio receiver's main analog to digital converters to preserve power.
摘要翻译：一种用于突发操作的数字AGC系统，特别适用于在无线局域网中接收分组。一个实施例包括在宽动态范围内提供称为接收信号强度指示（RSSI）的信号强度测量的对数检测器。 AGC系统包括通过对信号功率的对数求平均来估计接收信号中的功率。分组检测的开始避免使用无线电接收机的主要模数转换器来保持功率。

6. 发明授权

US07668523B2 Adaptive AGC in a wireless network receiver 有权
标题翻译：无线网络接收机中的自适应AGC
公开(公告)号：US07668523B2
公开(公告)日：2010-02-23
申请号：US11672132
申请日：2007-02-07
申请人： Andrew R. Adams , Philip J. Ryan , Brian Hart
发明人： Andrew R. Adams , Philip J. Ryan , Brian Hart
IPC分类号： H04B1/16
CPC分类号： H04W52/52 , H03G3/3068
摘要： An apparatus, a carrier medium storing instructions to implement a method, and a method for controlling the gain of a radio receiver for receiving packets of information in a wireless network. The receiver is connected to an antenna subsystem and has receive signal path including a plurality of sections including a first section coupled to the antenna subsystem and a next section. Each section has an adjustable gain and is able to provide a measure of the signal strength at its output. The method includes waiting for a start of packet indication, providing a measure of the signal strength at the output of the first section and the next section, and adjusting the gains of the first and the next sections using the provided measured signal strengths. In one embodiment, the receive signal path includes a filter, the provided measure for the first section is before the filter, and the provided measure for the second section is after the filter. The gain adjusting sets first section's gain according to the measured signal strength at the output of the first section and sets the next section's gain according to the provided measure of signal strength at the output of the next section relative to the provided measure of signal strength at the output of the first section. In one embodiment, the gain adjusting o is carried out in sequential AGC stages, one stage setting the gain of one or more sections.
摘要翻译：存储用于实现方法的指令的装置，载体介质以及用于控制无线电接收机的增益的方法，用于在无线网络中接收信息分组。接收机连接到天线子系统，并且具有包括多个部分的接收信号路径，所述多个部分包括耦合到天线子系统的第一部分和下一部分。每个部分都有一个可调节的增益，能够提供其输出信号强度的测量。该方法包括等待分组指示的开始，提供在第一部分和下一部分的输出处的信号强度的测量，以及使用所提供的测量信号强度来调整第一和下一个部分的增益。在一个实施例中，接收信号路径包括滤波器，所提供的第一部分的测量在滤波器之前，并且所提供的第二部分的测量值在滤波器之后。增益调整根据第一部分输出端的测量信号强度设置第一部分的增益，并根据提供的下一部分输出端的信号强度相对于所提供的信号强度测量值来设置下一部分的增益第一部分的输出。在一个实施例中，增益调整o在连续AGC阶段中执行，一个阶段设置一个或多个部分的增益。

7. 发明授权

US06888413B1 Frequency synthesizer using a VCO having a controllable operating point, and calibration and tuning thereof 有权
标题翻译：使用具有可控工作点的VCO的频率合成器，以及其校准和调谐
公开(公告)号：US06888413B1
公开(公告)日：2005-05-03
申请号：US10731924
申请日：2003-12-09
申请人： Andrew R. Adams , Neil H. Weste , Stephen C. Avery
发明人： Andrew R. Adams , Neil H. Weste , Stephen C. Avery
IPC分类号： H03F1/02 , H03F3/45 , H03F3/72 , H03L7/07 , H03L7/089 , H03L7/099 , H03L7/10 , H03L7/18 , H03L7/185 , H03M1/06 , H03M1/16 , H03M1/44 , H03L7/00
CPC分类号： H03L7/185 , H03F1/0277 , H03F3/45183 , H03F3/45659 , H03F3/72 , H03F2203/45418 , H03F2203/45652 , H03F2203/7203 , H03F2203/7224 , H03J2200/10 , H03L7/07 , H03L7/0891 , H03L7/099 , H03L7/10 , H03L7/18
摘要： A frequency synthesizer, a calibrator thereof, and an operating controller thereof are described. The synthesizer comprises a main charge pump that drives a voltage controlled oscillator (VCO) through a loop filter. The calibrator includes a second, replica charge pump that can also drive the VCO, but is set up to output only its maximum or minimum analog output control voltage. Since the construction and characteristics of the replica charge pump duplicate the main charge pump, the main charge pump's minimum and maximum analog control outputs can be cloned out to the VCO on demand. A VCO calibration procedure therefore includes switching the VCO to each of its ranges set by a bank of fixed capacitors, and using the replica charge pump to drive the VCO to its minimum and maximum frequency for each range setting. The min-max frequency data is stored in a lookup table, and operational requests to switch to a new channel frequency can be supported with a priori information about which fixed-capacitor range selection will be best. The operating point controller includes a sensor to sense the operating point and a controller that provides a switching input to a switchable bank of capacitors to change the operating point. The change can be determined according to calibration data.
摘要翻译：描述了频率合成器，校准器及其操作控制器。合成器包括通过环路滤波器驱动压控振荡器（VCO）的主电荷泵。校准器包括第二个复制电荷泵，也可以驱动VCO，但是其设置为仅输出其最大或最小模拟输出控制电压。由于复制电荷泵的结构和特性与主电荷泵重复，主电荷泵的最小和最大模拟控制输出可以根据需要克隆到VCO。因此，VCO校准程序包括将VCO切换到由固定电容器组设置的每个范围，并且使用复制电荷泵将VCO驱动到每个范围设置的最小和最大频率。最小最大频率数据存储在查找表中，并且可以通过关于哪个固定电容器范围选择将是最佳的先验信息来支持切换到新的信道频率的操作请求。操作点控制器包括用于感测工作点的传感器和向可切换的电容器组提供开关输入以改变工作点的控制器。该变化可以根据校准数据确定。

8. 发明授权

US06765977B1 Offset mode phase locked loop frequency synthesizer with reduced divide ratio 有权
标题翻译：偏移模式锁相环频率合成器具有降低的分频比
公开(公告)号：US06765977B1
公开(公告)日：2004-07-20
申请号：US10095662
申请日：2002-03-11
申请人： Andrew R. Adams , Stephen C. Avery
发明人： Andrew R. Adams , Stephen C. Avery
IPC分类号： H03D324
CPC分类号： H03L7/07 , H03J2200/10 , H03L7/0891 , H03L7/185
摘要： A phase locked loop (PLL) frequency synthesizer includes a voltage controlled oscillator (VCO) to provide a VCO frequency signal, a frequency offset circuit including a mixer accepting the VCO frequency signal and a signal from a second oscillator to produce a shifted-frequency signal having a frequency significantly lower than the VCO output frequency, a programmable divider accepting the shifted-frequency signal and dividing the frequency of the shifted-frequency signal by a settable amount, a phase detector to compare the phase of the output of the programmable divider to that of a reference oscillator and produce a phase difference signal; and a loop filter to filter a function of the phase difference to produce a control input to the VCO. The offset circuit shifts down the frequency without increasing the divide ratio of the loop as would a prescaler achieving the same frequency conversion as the frequency offset circuit.
摘要翻译：锁相环（PLL）频率合成器包括用于提供VCO频率信号的压控振荡器（VCO），包括接收VCO频率信号的混频器和来自第二振荡器的信号的频率偏移电路，以产生移位频率信号具有显着低于VCO输出频率的频率，可编程分频器接受偏移频率信号并将移频频率信号的频率除以可设置的量;相位检测器，用于将可编程分频器的输出的相位与参考振荡器产生相位差信号; 以及环路滤波器来滤除相位差的函数以产生到VCO的控制输入。偏移电路在不增加环路的分频比的情况下降低频率，而预分频器将实现与频率偏移电路相同的频率转换。

9. 发明授权

US07120427B1 CMOS wireless transceiver with programmable characteristics 有权
标题翻译： CMOS无线收发器具有可编程特性
公开(公告)号：US07120427B1
公开(公告)日：2006-10-10
申请号：US10095504
申请日：2002-03-11
申请人： Andrew R. Adams , Neil H. Weste
发明人： Andrew R. Adams , Neil H. Weste
IPC分类号： H04M3/00
CPC分类号： H04B1/0014 , H03F1/0261 , H03F3/19 , H03F3/68 , H04B1/40 , H04W88/02
摘要： A monolithic radio integrated circuit includes a substrate, a set of one or more analog subcircuits on the substrate, a programmable bias current supply on the substrate coupled to the set to provide bias currents to the analog subcircuits of the set including programmable bias currents to one or more analog subcircuits forming a first subset of the set, and a digital subsection coupled to the programmable bias supply to determine the bias currents supplied to the analog subcircuits of the first subset, such that one or more characteristics of the radio integrated circuit are modifiable by programming the programmable bias supply.
摘要翻译：单片无线电集成电路包括衬底，衬底上的一组或多个模拟子电路，耦合到该组的衬底上的可编程偏置电流源，以向该组的模拟子电路提供偏置电流，包括可编程偏置电流至一个形成该集合的第一子集的多个或多个模拟子电路，以及耦合到可编程偏置电源的数字部分，以确定提供给第一子集的模拟子电路的偏置电流，使得无线电集成电路的一个或多个特性是可修改的通过编程可编程偏置电源。

10. 发明授权

US06686804B1 Frequency synthesizer using a VCO having a controllable operating point, and calibration and tuning thereof 有权
公开(公告)号：US06686804B1
公开(公告)日：2004-02-03
申请号：US10096215
申请日：2002-03-11
申请人： Andrew R. Adams , Neil H. Weste , Stephen C. Avery
发明人： Andrew R. Adams , Neil H. Weste , Stephen C. Avery
IPC分类号： H03L700
CPC分类号： H03L7/10 , H03F1/0277 , H03F3/45183 , H03F3/45659 , H03F3/72 , H03F2203/45418 , H03F2203/45652 , H03F2203/7203 , H03F2203/7224 , H03J2200/10 , H03L7/07 , H03L7/0891 , H03L7/099 , H03L7/18 , H03L7/185
摘要： A frequency synthesizer, a calibrator thereof, and an operating controller thereof are described. The synthesizer comprises a main charge pump that drives a voltage controlled oscillator (VCO) through a loop filter. The calibrator includes a second, replica charge pump that can also drive the VCO, but is set up to output only its maximum or minimum analog output control voltage. Since the construction and characteristics of the replica charge pump duplicate the main charge pump, the main charge pump's minimum and maximum analog control outputs can be cloned out to the VCO on demand. A VCO calibration procedure therefore includes switching the VCO to each of its ranges set by a bank of fixed capacitors, and using the replica charge pump to drive the VCO to its minimum and maximum frequency for each range setting. The min-max frequency data is stored in a lookup table, and operational requests to switch to a new channel frequency can be supported with a priori information about which fixed-capacitor range selection will be best. The operating point controller includes a sensor to sense the operating point and a controller that provides a switching input to a switchable bank of capacitors to change the operating point. The change can be determined according to calibration data.

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