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    • 1. 发明授权
    • Wireless transceiver and method of operating the same
    • 无线收发器及其操作方法
    • US07937064B2
    • 2011-05-03
    • US12000464
    • 2007-12-13
    • Phuong T. HuynhJohn W. McCorkleFernando N. Hidalgo
    • Phuong T. HuynhJohn W. McCorkleFernando N. Hidalgo
    • H04B1/16H04B1/10H04B1/44
    • H04B1/44
    • A transceiver 400 is provided in an ultrawide bandwidth device, which includes an antenna 110, a transmitter circuit 145, and a receiver circuit 165. A transmitter amplifier 440 is provided between the antenna 110 and the transmitter circuit 145, and is configured to have an operational transmitter output impedance when the transceiver 400 is in a transmit mode and an isolation transmitter output impedance when the transceiver 400 is in a receive mode. A receiver amplifier 460 is provided between the antenna 110 and the receiver circuit 165, and is configured to have an operational receiver input impedance when the transceiver 400 is in a receive mode and an isolation receiver input impedance when the transceiver 400 is in a transmit mode. The isolation transmitter output impedance is greater than the operational receiver input impedance, and the isolation receiver input impedance is greater than the operational transmitter output impedance. Thus, a transmitter and receiver can be isolated without using a transmit/receive switch.
    • 收发器400设置在超宽带宽设备中,其包括天线110,发射机电路145和接收机电路165.发射机放大器440设置在天线110和发射机电路145之间,并且被配置为具有 当收发器400处于接收模式时,当收发器400处于发送模式时,操作发射机输出阻抗和隔离发射机输出阻抗。 接收器放大器460设置在天线110和接收器电路165之间,并且被配置为当收发器400处于接收模式时具有操作接收器输入阻抗,并且当收发器400处于发送模式时,接收器放大器460被配置为具有操作接收器输入阻抗 。 隔离变送器输出阻抗大于操作接收器输入阻抗,隔离接收器输入阻抗大于工作变送器输出阻抗。 因此,发射机和接收机可以被隔离而不使用发射/接收开关。
    • 5. 发明授权
    • Method and device for generating high frequency waveforms
    • 用于产生高频波形的方法和装置
    • US07782925B2
    • 2010-08-24
    • US11215305
    • 2005-08-31
    • John W. McCorklePhuong T. Huynh
    • John W. McCorklePhuong T. Huynh
    • H04B1/00
    • H04B1/71635H04B1/7172
    • An ultra wideband direct sequence code division multiple access (UWB DS-CDMA) (101) transmitter is provided. It includes a first multiplier (125) receiving two input signals, where the input signals are selected from a multi-level code signal (117), a transmit data signal (123), and a radio frequency (RF) center frequency signal (121), and responsive to the two input signals, generating a combined signal (127). Further included is a network (119) receiving a code-clock signal (113) aligned with the multi-level signal (117), multiplying the frequency of the code-clock signal (113) by a factor, and responsive thereto, producing the RF center frequency signal (121). Also provided is a second multiplier (129) receiving the combined signal (127) and the other of the input signals (117, 123, 121), and responsive thereto, generating an output signal (131).
    • 提供超宽带直接序列码分多址(UWB DS-CDMA)(101)发射机。 它包括接收两个输入信号的第一乘法器(125),其中从多电平码信号(117),发射数据信号(123)和射频(RF)中心频率信号(121)中选择输入信号 ),并且响应于所述两个输入信号,产生组合信号(127)。 还包括接收与多电平信号(117)对准的码时钟信号(113)的网络(119),将码时钟信号(113)的频率乘以因子,并响应于此产生 RF中心频率信号(121)。 还提供了接收组合信号(127)和另一个输入信号(117,123,121)的第二乘法器(129),并响应于此产生输出信号(131)。
    • 6. 发明授权
    • Wideband variable gain amplifier in an ultra wideband receiver
    • 宽带可变增益放大器在超宽带接收机
    • US07409198B2
    • 2008-08-05
    • US11214061
    • 2005-08-30
    • John W. McCorklePhuong T. Huynh
    • John W. McCorklePhuong T. Huynh
    • H04B1/16
    • H03G3/3078H03G3/3052H04B1/71637
    • A method (700, 1100) and apparatus (300) are provided in a receiver for applying a variable gain to a received signal including a transmitted codeword in accordance with an Ultra Wideband (UWB) protocol. A first signal is generated and input to a selectable gain stage including a series of selectable 0 dB and 9 dB gain elements (302-305). The first signal includes the received signal mixed with a local oscillator signal modified according to a reference codeword. A gain value is selected from the selectable gain stage to amplify the first signal and form a second signal. An output signal is generated by combining the second signal and the modified local oscillator signal.
    • 在接收器中提供方法(700,1100)和装置(300),用于根据超宽带(UWB)协议向包括发送码字的接收信号施加可变增益。 产生第一信号并将其输入到包括一系列可选择的0dB和9dB增益元件(302-305)的可选增益级。 第一信号包括与根据参考码字修改的本地振荡器信号混合的接收信号。 从可选择的增益级中选择增益值以放大第一信号并形成第二信号。 通过组合第二信号和修改的本地振荡器信号来产生输出信号。
    • 7. 发明申请
    • COHERENT TRANSCEIVER AND RELATED METHOD OF OPERATION
    • 相关收发器及相关操作方法
    • US20110256837A1
    • 2011-10-20
    • US13077092
    • 2011-03-31
    • John W. McCorkle
    • John W. McCorkle
    • H04B1/44
    • H04B1/408
    • A transceiver is provided, comprising: a programmable waveform generator configured to generate a base signal, the programmable waveform generator including a controllable waveform generator configured to generate an initial bandwidth signal having an initial frequency bandwidth; a multiple tone generator configured to generate a plurality of tone signals, each tone signal having a different frequency; one or more bandwidth multiplying circuits; and a control circuit a controller configured to control the operation of the controllable waveform generator, the tone generator and the one or more bandwidth multiplying circuits; a transmit port configured to output the base signal; a receive port configured to accept a received signal; a 90-degree splitter configured to receive the base signal and to generate a first split signal at a 0-degree output and a second split signal at a 90-degree output, the first and second split signals being separated by 90 degrees in phase; a first-mixer configured to mix the received signal and the first split signal to generate a quadrature-phase signal; and a second-mixer configured to mix the received signal and the second split signal to generate an in-phase signal.
    • 提供收发器,包括:可编程波形发生器,被配置为产生基本信号,所述可编程波形发生器包括被配置为产生具有初始频率带宽的初始带宽信号的可控波形发生器; 多音调发生器,其被配置为生成多个音调信号,每个音调信号具有不同的频率; 一个或多个带宽乘法电路; 以及控制电路,被配置为控制可控波形发生器,音调发生器和一个或多个带宽乘法电路的操作的控制器; 发送端口,被配置为输出基本信号; 接收端口,被配置为接受接收的信号; 90度分离器,被配置为接收基本信号并产生0度输出的第一分离信号和90度输出的第二分离信号,第一和第二分离信号被相位相隔90度; 第一混频器,被配置为混合接收信号和第一分离信号以产生正交相位信号; 以及第二混频器,被配置为混合接收信号和第二分割信号以产生同相信号。
    • 8. 发明授权
    • Common signalling mode for use with multiple wireless formats
    • 用于多种无线格式的通用信令模式
    • US07885174B2
    • 2011-02-08
    • US10868903
    • 2004-06-17
    • Matthew L. WelbornJohn W. McCorkle
    • Matthew L. WelbornJohn W. McCorkle
    • H04J11/00
    • H04W48/18H04W48/12H04W84/18H04W88/06
    • A method is provided for operating a wireless local device. In this method a local device receives a beacon for a current superframe in a common signal format. The beacon includes time slot assignment information. The local device then determines a device format for the transmission of data to a remote device based on format determination information. The device format can be one of a common signal format, and one or more wireless formats. The local device then determines one or more remote device time slots in the superframe assigned for transmission of the data to the remote device based on the time slot assignment information. Finally, the local device transmits the data in the one or more remote device time slots to the remote device using the device format.
    • 提供了一种用于操作无线本地设备的方法。 在该方法中,本地设备以公共信号格式接收当前超帧的信标。 信标包括时隙分配信息。 然后本地设备基于格式确定信息确定用于将数据传输到远程设备的设备格式。 设备格式可以是通用信号格式和一种或多种无线格式之一。 然后,本地设备基于时隙分配信息确定被指定用于向远程设备发送数据的超帧中的一个或多个远程设备时隙。 最后,本地设备使用设备格式将一个或多个远程设备时隙中的数据传输到远程设备。
    • 10. 发明授权
    • Method and system for estimating frequency offsets
    • 估计频率偏移的方法和系统
    • US07643602B2
    • 2010-01-05
    • US11239350
    • 2005-09-30
    • Timothy R. MillerJohn W. McCorkle
    • Timothy R. MillerJohn W. McCorkle
    • H03D3/24
    • H03D13/003H03L7/085
    • A method is provided for estimating a frequency offset value. This method includes: receiving a signal from the transmitting device at the receiving device, the received signal having a transmitter frequency (510); generating a local signal at the receiving device, the local signal having a starting frequency (520); comparing a received signal phase and a local signal phase to determine an adjusted error signal representing a phase difference between the received signal and the local signal (530); adjusting a current frequency of the local signal from the starting frequency to the transmitting frequency over a time period (540); integrating the adjusted error signal over the time period to generate an integrated error signal (550); and filtering the integrated error signal to generate a frequency difference estimate indicative of the frequency difference between the transmitter frequency and the starting frequency (560).
    • 提供了一种用于估计频率偏移值的方法。 该方法包括:在接收设备处从发送设备接收信号,所接收的信号具有发射机频率(510); 在所述接收设备处产生本地信号,所述本地信号具有起始频率(520); 比较接收的信号相位和本地信号相位,以确定表示接收信号和本地信号之间的相位差的经调整的误差信号(530); 在一段时间内将本地信号的当前频率从起始频率调整到发射频率(540); 在所述时间周期内积分所述经调整的误差信号以产生积分误差信号(550); 并且对积分误差信号进行滤波以产生指示发射机频率和起始频率之间的频率差的频率差估计(560)。