公开(公告)号：US07610019B2

公开(公告)日：2009-10-27

申请号：US11449068

申请日：2006-06-08

申请人： Jaekyun Moon ,  Younggyun Kim ,  Barrett J. Brickner ,  Paul C. Edwards ,  Michael E. Butenhoff

发明人： Jaekyun Moon ,  Younggyun Kim ,  Barrett J. Brickner ,  Paul C. Edwards ,  Michael E. Butenhoff

IPC分类号： H04B17/00

CPC分类号： H04L1/0001 ,  H04B7/0811 ,  H04B7/0814 ,  H04L1/0015 ,  H04L1/206

摘要： An apparatus for dynamic diversity signal reception based upon receiver-side link quality assessments includes two or more antennae. At least one switch is connected to the two or more antennae. A dynamic diversity controller is connected to the at least one switch. The dynamic diversity controller includes a link quality assessor to assess link quality and generate a link characterization value. A diversity configuration selector, responsive to the link characterization value, selectively activates the at least one switch to implement a dynamic diversity configuration. The link quality assessor includes a signal strength analyzer, a modem detector, and/or a MAC layer analyzer to assess the received signal and generate the link characterization value.

摘要翻译： 基于接收机侧链路质量评估的用于动态分集信号接收的装置包括两个或更多个天线。 至少一个开关连接到两个或更多个天线。 动态分集控制器连接到至少一个开关。 动态分集控制器包括链路质量评估者，以评估链路质量并生成链路特征值。 响应于链路特征值的分集配置选择器选择性地激活至少一个交换机以实现动态分集配置。 链路质量评估器包括信号强度分析器，调制解调器检测器和/或MAC层分析器，以评估所接收的信号并产生链路表征值。

公开(公告)号：US07271674B1

公开(公告)日：2007-09-18

申请号：US10918744

申请日：2004-08-13

申请人： Michael E. Butenhoff ,  Yongwang Ding

发明人： Michael E. Butenhoff ,  Yongwang Ding

IPC分类号： H03L5/00

CPC分类号： H03G3/3036

摘要： The disclosure relates to an automatic level control technique for RF amplifiers in a communication system, such as a wireless communication system. The invention provides an automatic level control technique to compensate for variations in the gain of an RF amplifier, which may be a transmitter amplifier or a receiver amplifier. In accordance with the invention, the gain of the RF amplifier can be controlled as a function of the output of a voltage controlled oscillator (VCO) circuit provided in the communication system. A VCO typically includes a buffer amplifier with a structure similar to that of the RF amplifier used in the transmit or receive side of the RF front-end. By tracking changes in the output of the VCO buffer amplifier, an automatic level control (ALC) input to the RF amplifier can be adjusted to compensate for process- and temperature-based variations in amplifier gain.

摘要翻译： 本公开涉及用于诸如无线通信系统的通信系统中的RF放大器的自动电平控制技术。 本发明提供了一种自动电平控制技术，用于补偿RF放大器的增益变化，RF放大器可以是发射机放大器或接收放大器。 根据本发明，可以根据在通信系统中提供的压控振荡器（VCO）电路的输出来控制RF放大器的增益。 VCO通常包括具有类似于在RF前端的发射或接收侧中使用的RF放大器的结构的缓冲放大器。 通过跟踪VCO缓冲放大器输出的变化，可以调整输入到RF放大器的自动电平控制（ALC），以补偿放大器增益的基于过程和温度的变化。

公开(公告)号：US07626467B1

公开(公告)日：2009-12-01

申请号：US11894997

申请日：2007-08-22

申请人： Michael E. Butenhoff ,  Yongwang Ding

发明人： Michael E. Butenhoff ,  Yongwang Ding

IPC分类号： H03L5/00

CPC分类号： H03G3/3036

摘要： The disclosure relates to an automatic level control technique for RF amplifiers in a communication system, such as a wireless communication system. The invention provides an automatic level control technique to compensate for variations in the gain of an RF amplifier, which may be a transmitter amplifier or a receiver amplifier. In accordance with the invention, the gain of the RF amplifier can be controlled as a function of the output of a voltage controlled oscillator (VCO) circuit provided in the communication system. A VCO typically includes a buffer amplifier with a structure similar to that of the RF amplifier used in the transmit or receive side of the RF front-end. By tracking changes in the output of the VCO buffer amplifier, an automatic level control (ALC) input to the RF amplifier can be adjusted to compensate for process- and temperature-based variations in amplifier gain.

摘要翻译： 本公开涉及用于诸如无线通信系统的通信系统中的RF放大器的自动电平控制技术。 本发明提供了一种自动电平控制技术，用于补偿RF放大器的增益变化，RF放大器可以是发射机放大器或接收放大器。 根据本发明，可以根据在通信系统中提供的压控振荡器（VCO）电路的输出来控制RF放大器的增益。 VCO通常包括具有类似于在RF前端的发射或接收侧中使用的RF放大器的结构的缓冲放大器。 通过跟踪VCO缓冲放大器输出的变化，可以调整输入到RF放大器的自动电平控制（ALC），以补偿放大器增益的基于过程和温度的变化。

公开(公告)号：US07196573B1

公开(公告)日：2007-03-27

申请号：US11346849

申请日：2006-02-02

申请人： James A. Bailey ,  Michael E. Butenhoff ,  Raymond Chik ,  Angus McLaren ,  William Martin Snelgrove

发明人： James A. Bailey ,  Michael E. Butenhoff ,  Raymond Chik ,  Angus McLaren ,  William Martin Snelgrove

IPC分类号： H03K5/00 ,  H04B1/10

CPC分类号： H03F3/45188 ,  H03F1/56 ,  H03F2200/264 ,  H03F2203/45052 ,  H03F2203/45296 ,  H03H11/1213 ,  H03H11/1291

摘要： Various devices, circuits and systems including filter sections for creating complex poles are described herein. For example, various circuits including transistors, tuning capacitors and resistors are described. In the circuits, the tuning capacitor is electrically coupled between the gate and source of the transistor, and the resistor is electrically coupled to the gate of the transistor. In one configuration, the circuit input is applied to the gate of the transistor via the resistor, and the output is taken from the source of the transistor. In another configuration, the input is applied to the source of the transistor, and the output is taken from the same source. In yet another configuration, the input is applied at the source of the transistor and the output is taken from the drain of the transistor.

摘要翻译： 这里描述了包括用于产生复极的滤波器部分的各种装置，电路和系统。 例如，描述了包括晶体管，调谐电容器和电阻器的各种电路。 在电路中，调谐电容器电耦合在晶体管的栅极和源极之间，并且电阻器电耦合到晶体管的栅极。 在一种配置中，电路输入经由电阻器施加到晶体管的栅极，并且输出取自晶体管的源极。 在另一种配置中，输入被施加到晶体管的源极，并且输出取自相同的源。 在另一种配置中，输入被施加在晶体管的源极处，并且输出从晶体管的漏极取出。