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    • 1. 发明授权
    • Coherent transceiver and related method of operation
    • 相干收发器及相关操作方法
    • US08606204B2
    • 2013-12-10
    • US13077092
    • 2011-03-31
    • John W. McCorkle
    • John W. McCorkle
    • H04B1/16H04B1/38
    • 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。
    • 3. 发明授权
    • Method and circuit for waveform generation
    • 用于波形生成的方法和电路
    • US08390344B2
    • 2013-03-05
    • US13076996
    • 2011-03-31
    • John W. McCorkle
    • John W. McCorkle
    • H03B19/00
    • H03B19/00H03B2200/0072H03B2200/008
    • A programmable waveform generator, comprising: a controllable waveform generator configured to generate an initial bandwidth signal having an initial frequency bandwidth; a tone generator configured to generate a plurality of tone signals, each tone signal having a different frequency; a first bandwidth-multiplying circuit, including a first mixer having a first input port configured to receive the low-bandwidth signal; a first switch configured to choose one of the plurality of tone signals or a phase shifted version of one of the plurality of tone signals and output the chosen signal as a first chosen tone; a controller configured to control the operation of the bandwidth multiplying block, wherein the first mixer is further configured to receive the first chosen tone at a second input port, wherein the first mixer is further configured to mix the initial bandwidth signal and the first chosen tone to generate a first bandwidth signal at an output port, the first bandwidth signal having a first frequency bandwidth, wherein the first frequency bandwidth is greater than the initial frequency bandwidth, and wherein the first frequency bandwidth is an integer multiple of the initial frequency bandwidth.
    • 一种可编程波形发生器,包括:可控波形发生器,被配置为产生具有初始频率带宽的初始带宽信号; 音调发生器,被配置为产生多个音调信号,每个音调信号具有不同的频率; 第一带宽倍增电路,包括具有被配置为接收低带宽信号的第一输入端口的第一混频器; 第一开关,被配置为选择所述多个音调信号之一或所述多个音调信号之一的相移版本,并将所选择的信号输出为第一选择音; 控制器,被配置为控制所述带宽乘法块的操作,其中所述第一混合器还被配置为在第二输入端口处接收所述第一选择的音调,其中所述第一混合器还被配置为混合所述初始带宽信号和所述第一选择音 为了在输出端口产生第一带宽信号,所述第一带宽信号具有第一频带宽度,其中所述第一频带宽度大于所述初始频带宽度,并且其中所述第一频带宽度为所述初始频带宽度的整数倍。
    • 7. 发明授权
    • Frequency-notching antenna
    • 频率切割天线
    • US07352333B2
    • 2008-04-01
    • US11237751
    • 2005-09-29
    • John W. McCorkle
    • John W. McCorkle
    • H01Q13/10
    • H01Q9/40H01Q13/106
    • An antenna (100) is provided. The antenna includes: a first ground element (105); a first driven element (110) formed from a planar piece of conductive material, the first driven element being configured to transmit and receive wireless signals, the first driven element including a physical slot (130); a conductive line (135) formed in the physical slot such that the conductive line is separated from the first driven element by a gap (G) filled with non-conductive material, the conductive line having a line impedance that is a function of an effective line width of the conductive line, and an effective gap width of a gap between the conductive line and the first driven element; and a signal line (120) configured to send and receive signals to and from the conductive line.
    • 提供天线(100)。 天线包括:第一接地元件(105); 由平面导电材料片形成的第一从动元件(110),所述第一驱动元件被配置为发送和接收无线信号,所述第一驱动元件包括物理槽(130); 形成在物理槽中的导线(135),使得导线与填充有非导电材料的间隙(G)从第一从动元件分离,该导线具有作为有效的功能的线阻抗 导线的线宽和导线与第一从动元件之间的间隙的有效间隙宽度; 以及信号线(120),被配置为向所述导线发送信号和从所述导线接收信号。
    • 8. 发明授权
    • System and method for providing a single-ended receive portion and a differential transmit portion in a wireless transceiver
    • 用于在无线收发器中提供单端接收部分和差分发射部分的系统和方法
    • US07292827B2
    • 2007-11-06
    • US10975375
    • 2004-10-29
    • John W. McCorkle
    • John W. McCorkle
    • H04B1/44
    • H03H7/42H01P5/10
    • In an input/output circuit (200), a differential balun (250) is provided that has first and second balun inputs and first and second balun outputs. An antenna (230) is connected to the first and second balun outputs. A differential amplifier (220) has one output connected to the first balun input, and a second output connected to the second balun input, while a single-ended amplifier (110) has its input connected to the first balun input. A grounding switch (240) is connected between the second balun input and ground. During a transmit mode the grounding switch (240) is open, the differential amplifier (220) is turned on, and the single-ended amplifier (110) is turned off. During a receive mode the grounding switch (240) is closed, the differential amplifier (220) is turned off, and the single-ended amplifier (110) is turned on.
    • 在输入/输出电路(200)中,提供了具有第一和第二平衡 - 不平衡变换器输入以及第一和第二平衡 - 不平衡变换器输出的差分平衡 - 不平衡变压器(250)。 天线(230)连接到第一和第二平衡 - 不平衡变换器输出端。 差分放大器(220)具有连接到第一平衡 - 不平衡变换器输入的一个输出和连接到第二平衡 - 不平衡变换器输入的第二输出,而单端放大器(110)的输入连接到第一平衡 - 不平衡变换器输入。 接地开关(240)连接在第二平衡 - 不平衡变换器输入和地之间。 在发射模式期间,接地开关(240)断开,差动放大器(220)导通,单端放大器(110)关断。 在接收模式期间,接地开关(240)闭合,差动放大器(220)关闭,单端放大器(110)导通。
    • 10. 发明授权
    • Ultra wide bandwidth spread-spectrum communications systems
    • 超宽带宽扩频通信系统
    • US06931078B2
    • 2005-08-16
    • US10259888
    • 2002-09-30
    • John W. McCorkleMartin Rofheart
    • John W. McCorkleMartin Rofheart
    • H04B1/7163H04B1/717H04B1/7176H04B1/7183H04B1/719H04L25/49H04L27/00H04L27/04
    • H04B1/7176H04B1/71632H04B1/7172H04B1/7174H04B1/7183H04B1/719H04L25/4902H04L27/0004
    • An ultra wide bandwidth, high speed, spread spectrum communications system uses short wavelets of electromagnetic energy to transmit information through objects such as walls or earth. The communication system uses baseband codes formed from time shifted and inverted wavelets to encode data on a RF signal. Typical wavelet pulse durations are on the order of 100 to 1000 picoseconds with a bandwidth of approximately 8 GHz to 1 GHz, respectively. The combination of short duration wavelets and encoding techniques are used to spread the signal energy over an ultra wide frequency band such that the energy is not concentrated in any particular narrow band (e.g. VHF: 30-300 MHz or UHF: 300-1000 MHz) and is not detected by conventional narrow band receivers so it does not interfere with those communication systems. The use of pulse codes composed of time shifted and inverted wavelets gives the system according to the present invention has a spatial resolution on the order of 1 foot which is sufficient to minimize the negative effects of multipath interference and permit time domain rake processing.
    • 超宽带宽,高速度,扩频通信系统使用电子能量的短小波通过诸如墙壁或地球的物体传输信息。 通信系统使用由时移和反向小波形成的基带码来编码RF信号上的数据。 典型的小波脉冲持续时间分别为大约8 GHz至1 GHz的带宽约为100至1000皮秒。 使用短时小波和编码技术的组合来在超宽频带上扩展信号能量,使得能量不集中在任何特定的窄带(例如VHF:30-300MHz或UHF:300-1000MHz) 并且不被传统的窄带接收机检测到,因此它不干扰那些通信系统。 使用由时移和反向小波组成的脉冲编码使得根据本发明的系统具有大约1英尺的空间分辨率,这足以使多路径干扰的负面影响最小化并允许时域耙式处理。