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    • 2. 发明授权
    • Nonlinear pulse oscillator methods and apparatus
    • 非线性脉冲振荡器的方法和装置
    • US08154354B2
    • 2012-04-10
    • US11991577
    • 2006-09-06
    • David RickettsDonhee HamXiaofeng Li
    • David RickettsDonhee HamXiaofeng Li
    • H03B5/12
    • H03L7/099H03B5/1221H03B5/1234H03B5/1243H03K5/12
    • Methods and apparatus for implementing stable self-starting and self-sustaining high-speed electrical nonlinear pulse (e.g., soliton, cnoidal wave, or quasi-soliton) oscillators. Chip-scale nonlinear pulse oscillator devices may be fabricated using III-V semiconductor materials (e.g., GaAs) to attain soliton pulse widths on the order of a few picoseconds or less (e.g., 1 to 2 picoseconds, corresponding to frequencies of approximately 300 GHz or greater). In one example, a nonlinear pulse oscillator is implemented as a closed loop structure that comprises a nonlinear transmission line and a distributed nonlinear amplifier arrangement configured to provide a self-adjusting gain as a function of an average voltage of the oscillator signal. In another example, a nonlinear oscillator employing a lumped nonlinear amplifier and a nonlinear transmission line in a closed loop arrangement may be used in combination with a two-port nonlinear transmission line that provides additional pulse compression for pulses circulating in the oscillator.
    • 用于实现稳定的自启动和自持的高速电非线性脉冲(例如,孤子,cnoidal波或准孤子)振荡器的方法和装置。 可以使用III-V半导体材料(例如,GaAs)来制造芯片级非线性脉冲振荡器器件,以获得大约几皮秒或更小的孤子脉冲宽度(例如,1到2皮秒,对应于大约300GHz的频率 或更大)。 在一个示例中,非线性脉冲振荡器被实现为闭环结构,其包括非线性传输线和配置为提供作为振荡器信号的平均电压的函数的自调节增益的分布式非线性放大器布置。 在另一示例中,采用集总非线性放大器和闭环布置中的非线性传输线的非线性振荡器可以与为在振荡器中循环的脉冲提供额外的脉冲压缩的双端口非线性传输线路组合使用。
    • 3. 发明授权
    • Voltage controlled oscillator with multi-tap inductor
    • 具有多抽头电感的压控振荡器
    • US08143960B2
    • 2012-03-27
    • US12011356
    • 2008-01-25
    • Qiang Li
    • Qiang Li
    • H03B5/12
    • H03B5/1228H03B5/1215H03B5/1221H03B5/1253H03B5/1265H03B2200/0038
    • According to one exemplary embodiment, a voltage controlled oscillator configured to operate in low and high band modes includes a low band section and a high band section. The voltage controlled oscillator further includes a multi-tap inductor having a high inductance portion coupled to the low band section and a low inductance portion coupled to the high band section. The low band section is configured to provide a low frequency band oscillator output in the low band mode and the high band section is configure to provide a high frequency band oscillator output in the high band mode. The low band section is disabled in the high band mode and the high band section is disabled in the low band mode. A center tap of the multi-tap inductor is coupled to a supply voltage.
    • 根据一个示例性实施例,配置为在低频和高频模式下操作的压控振荡器包括低频段和高频段。 压控振荡器还包括具有耦合到低频带部分的高电感部分和耦合到高频带部分的低电感部分的多抽头电感器。 低频段被配置为在低频带模式中提供低频带振荡器输出,并且高频段部分被配置为在高频带模式中提供高频带振荡器输出。 低频段在低频段模式下被禁用,高频段在低频段模式下被禁止。 多抽头电感器的中心抽头耦合到电源电压。
    • 6. 发明授权
    • Injection-locked frequency divider
    • 注入锁分频器
    • US07659784B2
    • 2010-02-09
    • US11965745
    • 2007-12-28
    • Sheng-Lyang JangCheng-Chen Liu
    • Sheng-Lyang JangCheng-Chen Liu
    • H03B21/00
    • H03B19/14H03B5/1209H03B5/1215H03B5/1221H03B5/1228H03B5/1243H03B2200/0074H03D7/14
    • An injection-locked frequency divider is provided. The injection-locked frequency divider includes a voltage control oscillator (VCO) and a mixer. The VCO includes a LC resonance tank and a negative-resistance generator for generating a differential oscillation signal including a first and a second oscillation signals. The LC resonance tank adjusts a VCO reactance and resonates for generating the differential oscillation signal. The negative-resistance generator coupled to the LC resonance tank eliminates an equivalent resistance generated by the LC resonance tank and maintains the VCO to continuously oscillate. The mixer has a first and a second local input terminals respectively receiving the first and second injected signals included in a differential injected signal, and the first and second radio frequency input terminals respectively receiving the first and second oscillation signals for mixing the differential injected signal with the differential oscillation signal to adjust the output frequency of the differential oscillation signal.
    • 提供了一种注入锁定分频器。 注入锁定分频器包括压控振荡器(VCO)和混频器。 VCO包括LC谐振箱和用于产生包括第一和第二振荡信号的差分振荡信号的负电阻发生器。 LC谐振槽调节VCO电抗并谐振以产生差分振荡信号。 耦合到LC谐振槽的负电阻发生器消除了由LC谐振箱产生的等效电阻并且使VCO保持连续振荡。 混频器具有分别接收包含在差分注入信号中的第一和第二注入信号的第一和第二本地输入端子,并且分别接收第一和第二振荡信号的第一和第二射频输入端子用于将差分注入信号与 差分振荡信号调节差分振荡信号的输出频率。