公开(公告)号：US20090168939A1

公开(公告)日：2009-07-02

申请号：US11968105

申请日：2007-12-31

申请人： NICOLAS CONSTANTINIDIS ,  GUILLAUME CRINON ,  ALEXANDRE ROUXEL ,  ALAN WESTWICK ,  GARY FRANZOSA ,  Didier Gallais ,  Marty Lynn Pflum

发明人： NICOLAS CONSTANTINIDIS ,  GUILLAUME CRINON ,  ALEXANDRE ROUXEL ,  ALAN WESTWICK ,  GARY FRANZOSA ,  Didier Gallais ,  Marty Lynn Pflum

IPC分类号： H04L7/02

CPC分类号： H04W52/028 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/162 ,  Y02D70/22

摘要： A method is disclosed for controlling the operation of a low power radio platform that realizes the physical layer (PHY) with a software portion and an analog front end, the analog front end disposed between the DSP and an antenna, and realizes the MAC layer with a microcontroller unit (MCU). The DSP, analog front end and MCU are maintained in a low power mode of operation when not in data communication. When data communication is initiated, a hardware controller controls at least one hardware interface disposed between the DSP and the analog front end to initiate multiple time based tasks to transfer data to and from a buffer. During the execution of these tasks, the controller causes a task in the DSP to be initiated for processing of data in the buffers and, upon completion of at least one of the tasks, notifying the MCU of such. The controller controls the hardware interface to terminate operation when predetermined time based events have occurred. The MCU in at least one mode of operation thereof is operable to initiate the operation of the hardware controller and then convert to a low power mode of operation to await notification.

摘要翻译： 公开了一种用于控制利用软件部分和模拟前端实现物理层（PHY）的低功率无线电平台的操作的方法，模拟前端设置在DSP和天线之间，并且实现具有 微控制器单元（MCU）。 DSP，模拟前端和MCU在不进行数据通信时，都处于低功耗操作模式。 当数据通信发起时，硬件控制器控制至少一个配置在DSP和模拟前端之间的硬件接口，以启动多个基于时间的任务，以将数据传送到缓冲器和从缓冲器传输数据。 在执行这些任务期间，控制器使得DSP中的任务被启动以处理缓冲器中的数据，并且在完成至少一个任务时通知MCU。 当发生预定的基于时间的事件时，控制器控制硬件接口终止操作。 MCU中的至少一种操作模式可操作以启动硬件控制器的操作，然后转换为低功率操作模式以等待通知。

公开(公告)号：US20080079650A1

公开(公告)日：2008-04-03

申请号：US11538043

申请日：2006-10-02

申请人： NICOLAS CONSTANTINIDIS ,  GUILLAUME CRINON ,  ALAN WESTWICK

发明人： NICOLAS CONSTANTINIDIS ,  GUILLAUME CRINON ,  ALAN WESTWICK

IPC分类号： H01Q1/50

CPC分类号： H01Q7/005

摘要： An RF interface for interfacing between a differential transceiver and at least two antenna ports, which transceiver has at least two receive inputs for receiving RF signals from the at least two antenna ports and at least two transmit outputs for transmitting RF signals to the at least two antenna ports. A multiplexing device is provided for interfacing between the transceiver and the at least two antenna ports and selectively interface transmitted RF signals to one or both of the at least two antenna ports or selectively interface received signals from one or both of the at least two antenna ports to respective receive inputs of the transceiver. A controller is provided for controlling the multiplexer to operate in either a receive mode or a transmit mode and, in the receive mode, operate in either a single ended mode to interface one of the at least two antenna inputs to one of the inputs of the transceiver or a differential mode to interface both of the at least two antenna inputs to respective inputs of the transceiver. A matching network controlled by the controller matches the impedance of the at least two antenna ports to the input of the transceiver when in the receive mode, and operable to select between at least two different antenna impedances.

摘要翻译： 一种RF接口，用于在差分收发器和至少两个天线端口之间进行接口，该收发器具有至少两个用于从至少两个天线端口接收RF信号的接收输入和用于将RF信号发射到至少两个天线端口的至少两个发射输出 天线端口。 提供了多路复用装置，用于在收发器和至少两个天线端口之间进行接口，并且将发射的RF信号选择性地接合到至少两个天线端口中的一个或两者，或者选择性地接收来自至少两个天线端口中的一个或两个的接收信号 到收发器的相应接收输入。 提供控制器用于控制多路复用器以接收模式或发射模式操作，并且在接收模式中，以单端模式操作以将至少两个天线输入中的一个接入到 收发器或差分模式以将所述至少两个天线输入端接收到所述收发器的相应输入端。 当处于接收模式时，由控制器控制的匹配网络将至少两个天线端口的阻抗匹配到收发器的输入，并且可操作以在至少两个不同的天线阻抗之间进行选择。

公开(公告)号：US20100156685A1

公开(公告)日：2010-06-24

申请号：US12339757

申请日：2008-12-19

申请人： ALAN WESTWICK ,  XIAOLING GUO

发明人： ALAN WESTWICK ,  XIAOLING GUO

IPC分类号： H03M1/12

CPC分类号： H03M1/002 ,  H03M1/462

摘要： A successive approximation analog-to-digital converter includes a capacitor array having a plurality of switch capacitors therein with varying weights, each having a common plate connected to a common node and a switched plate. A SAR controller samples an input voltage on said capacitor array in a sampling phase and redistributes the charge stored therein in a conversion phase by selectively increasing the voltage on select capacitors of the capacitor array in accordance with a SAR conversion algorithm. Circuitry controls the sampling of the input voltage by the capacitor array and is responsive to at least one applied bias current. The at least one applied bias current operates at a first level responsive to a first mode of operation of the SAR ADC and operates at a second level responsive to a second mode of operation of the SARADC.

摘要翻译： 逐次逼近模数转换器包括其中具有多个重量变化的开关电容器的电容器阵列，每个开关电容器具有连接到公共节点和开关板的公共板。 SAR控制器以采样相位对所述电容器阵列上的输入电压进行采样，并且通过根据SAR转换算法选择性地增加电容器阵列的选择电容器上的电压来重新分配存储在转换阶段的电荷。 电路控制电容器阵列对输入电压的采样，并响应至少一个施加的偏置电流。 响应于SAR ADC的第一工作模式，至少一个施加的偏置电流工作在第一电平，并响应于SARADC的第二操作模式而在第二电平下工作。

公开(公告)号：US20100156684A1

公开(公告)日：2010-06-24

申请号：US12339751

申请日：2008-12-19

申请人： ALAN WESTWICK ,  XIAOLING GUO

发明人： ALAN WESTWICK ,  XIAOLING GUO

IPC分类号： H03M1/20 ,  H03M1/12

CPC分类号： H03M1/0636 ,  H03M1/0643 ,  H03M1/0656 ,  H03M1/122 ,  H03M1/468 ,  H03M1/68 ,  H03M1/804

摘要： A method for operating an N-bit SAR ADC as a greater than N-bit resolution SAR ADC includes the steps of taking a plurality of samples for each analog value being converted to a digital value by the SAR ADC. A portion of an LSB is added to all but one of the plurality of samples. The plurality of samples are then accumulated and output as a digital value. The digital value has a resolution greater than the N-bit resolution of the SAR ADC.

摘要翻译： 用于将N位SAR ADC操作为大于N位分辨率SAR ADC的方法包括以下步骤：对于通过SAR ADC将每个模拟值转换为数字值的多个样本。 LSB的一部分被添加到多个样本中的除一个之外的所有样本。 然后将多个样本累积并作为数字值输出。 数字值的分辨率大于SAR ADC的N位分辨率。