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公开(公告)号：US06967539B2
公开(公告)日：2005-11-22
申请号：US10643278
申请日：2003-08-18
CPC分类号： H03L7/04
摘要： An oscillator to generate a low phase-noise reference signal at an oscillation frequency includes a frequency generator to generate the reference signal responsive to a control signal, and a delay element made of a high-temperature superconductor material. The delay element time-delays the reference signal and provides a low phase-noise time-delayed reference signal when cooled to a cryogenic temperature. The oscillator includes a phase detector to generate the control signal from a phase difference between the time-delayed reference signal and a phase-shifted reference signal. The delay element may comprise a coplanar waveguide having a length between 500 and 1000 meters arranged randomly on a substrate having a diameter of between five and thirteen centimeters. The delay element may provide a delay ranging from five to fifteen microseconds. The coplanar waveguide may be comprised of Yttrium-Barium-Copper Oxide disposed on either a Lanthanum-Aluminum Oxide or a Magnesium Oxide substrate.
摘要翻译： 用于在振荡频率下产生低相位噪声参考信号的振荡器包括响应于控制信号产生参考信号的频率发生器和由高温超导体材料制成的延迟元件。 延迟元件对参考信号进行时间延迟，并在冷却至低温时提供低相位噪声时间延迟参考信号。 该振荡器包括相位检测器，用于根据延迟时间的参考信号和相移参考信号之间的相位差产生控制信号。 延迟元件可以包括具有在500和1000米之间的长度的共面波导，其随机地布置在直径在5至13厘米之间的基底上。 延迟元件可以提供从5到15微秒的延迟。 共面波导可以由设置在镧 - 氧化铝或氧化镁衬底上的钇 - 氧化铜 - 氧化铜组成。
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2.发明授权公开(公告)号：US06970128B1
公开(公告)日：2005-11-29
申请号：US10959794
申请日：2004-10-06
CPC分类号： G01S13/888 , G01S5/0247 , G01S13/9035
摘要： A see-through-the-wall (STTW) imaging system uses a plurality of geographically separated positioning transmitters to transmit non-interfering positioning signals. An imaging unit generates a synthetic aperture image of a target by compensating for complex movement of the imaging unit using the positioning signals. The imaging unit includes forward and aft positioning antennas to receive at least three of the positioning signals, an imaging antenna to receive radar return signals from the target, and a signal processor to compensate the return signals for position and orientation of the imaging antenna using the positioning signals. The signal processor may construct the synthetic aperture image of a target from the compensated return signals as the imaging unit is moved with respect to the target. The signal processor may determine the position and the orientation of the imaging unit by measuring a relative phase of the positioning signals.
摘要翻译： 透视墙（STTW）成像系统使用多个地理上分离的定位发射机来发射非干扰定位信号。 成像单元通过使用定位信号补偿成像单元的复杂运动来产生目标的合成孔径图像。 该成像单元包括用于接收至少三个定位信号的前进和后部定位天线，用于接收来自目标的雷达返回信号的成像天线和信号处理器，用于补偿使用该成像天线的成像天线的位置和取向的返回信号 定位信号。 当成像单元相对于目标移动时，信号处理器可以从经补偿的返回信号构建目标的合成孔径图像。 信号处理器可以通过测量定位信号的相对相位来确定成像单元的位置和取向。
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3.发明授权High-frequency, high-speed precision digital bi-phase modulator and method for bi-phase modulation 有权高频，高速精密数字双相调制器和双相调制方法公开(公告)号：US08952764B2
公开(公告)日：2015-02-10
申请号：US13415989
申请日：2012-03-09
IPC分类号： H03C3/00
摘要： Embodiments of digital high-speed bi-phase modulator and method for bi-phase modulation are generally described herein. In some embodiments, the digital high-speed bi-phase modulator comprises a high-speed digital divider, a high-speed digital multiplexer, and matched signal paths provided between the divider and the multiplexer. The high-speed digital divider is configured to receive a carrier signal and generate complementary output signals. The high-speed digital multiplexer is configured to switch between the complementary output signals and generate a bi-phase modulated output at a carrier frequency (fc) modulated with a bi-phase code. The bi-phase code may be provided to control inputs of the multiplexer.
摘要翻译： 数字高速双相调制器的实施例和用于双相调制的方法一般在此描述。 在一些实施例中，数字高速双相调制器包括高速数字分频器，高速数字多路复用器以及设置在分频器和多路复用器之间的匹配信号路径。 高速数字分频器配置为接收载波信号并产生互补的输出信号。 高速数字多路复用器被配置为在互补输出信号之间切换并且以用双相码调制的载波频率（fc）产生双相调制输出。 可以提供双相代码以控制多路复用器的输入。
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公开(公告)号：US20110057739A1
公开(公告)日：2011-03-10
申请号：US12556612
申请日：2009-09-10
IPC分类号： H03C3/00
CPC分类号： G01S7/282
摘要： A bi-phase modulator including a driver and a mixer. The driver includes a prescaler having an input for receiving a signal and an output for outputting a baseband signal. The mixer includes a mixer having an input coupled to the output of the prescaler for receiving the baseband signal output by the prescaler. The baseband signal output by the prescaler drives the mixer so as to output a modulated waveform from an output of the mixer.
摘要翻译： 一种包括驱动器和混频器的双相调制器。 驱动器包括具有用于接收信号的输入的预分频器和用于输出基带信号的输出。 混频器包括具有耦合到预分频器的输出的输入端的混频器，用于接收预分频器输出的基带信号。 预分频器输出的基带信号驱动混频器，从混频器的输出输出调制波形。
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5.发明申请公开(公告)号：US20130234803A1
公开(公告)日：2013-09-12
申请号：US13415989
申请日：2012-03-09
IPC分类号： H03C3/02
摘要： Embodiments of digital high-speed bi-phase modulator and method for bi-phase modulation are generally described herein. In some embodiments, the digital high-speed bi-phase modulator comprises a high-speed digital divider, a high-speed digital multiplexer, and matched signal paths provided between the divider and the multiplexer. The high-speed digital divider is configured to receive a carrier signal and generate complementary output signals. The high-speed digital multiplexer is configured to switch between the complementary output signals and generate a bi-phase modulated output at a carrier frequency (fc) modulated with a bi-phase code. The bi-phase code may be provided to control inputs of the multiplexer.
摘要翻译： 数字高速双相调制器的实施例和用于双相调制的方法一般在此描述。 在一些实施例中，数字高速双相调制器包括高速数字分频器，高速数字多路复用器以及设置在分频器和多路复用器之间的匹配信号路径。 高速数字分频器配置为接收载波信号并产生互补的输出信号。 高速数字多路复用器被配置为在互补输出信号之间切换并且以用双相码调制的载波频率（fc）产生双相调制输出。 可以提供双相代码以控制多路复用器的输入。
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公开(公告)号：US07915970B1
公开(公告)日：2011-03-29
申请号：US12556612
申请日：2009-09-10
IPC分类号： H04L27/20
CPC分类号： G01S7/282
摘要： A bi-phase modulator including a driver and a mixer. The driver includes a prescaler having an input for receiving a signal and an output for outputting a baseband signal. The mixer includes a mixer having an input coupled to the output of the prescaler for receiving the baseband signal output by the prescaler. The baseband signal output by the prescaler drives the mixer so as to output a modulated waveform from an output of the mixer.
摘要翻译： 一种包括驱动器和混频器的双相调制器。 驱动器包括具有用于接收信号的输入的预分频器和用于输出基带信号的输出。 混频器包括具有耦合到预分频器的输出的输入端的混频器，用于接收预分频器输出的基带信号。 预分频器输出的基带信号驱动混频器，从混频器的输出输出调制波形。
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