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    • 4. 发明授权
    • Harmonic suppression circuit, an injection-locked frequency divider circuit and associated methods
    • 谐波抑制电路,注入锁相分频电路及相关方法
    • US08198923B2
    • 2012-06-12
    • US12165151
    • 2008-06-30
    • Shey-Shi LuHsien-Ku Chen
    • Shey-Shi LuHsien-Ku Chen
    • H03B19/06
    • H03B19/14
    • The invention includes a harmonic suppression circuit, an injection-locked frequency divider circuit (ILFD) and associated methods. The harmonic suppression circuit comprises a source voltage, two suppression modules, two input terminals, two smoothed output terminals and a ground. The ILFD comprises a ground, an input transistor, an input terminal, two divider legs, two output terminals and a source voltage. The associated method to improve harmonic suppression comprises acts of synthesizing differential-phase signals and simultaneously suppressing second harmonics of in-phase signals. The method to extent an ILFD's locking range comprises acts of decreasing quality factor while keeping resonance frequency constant.
    • 本发明包括谐波抑制电路,注入锁定分频器电路(ILFD)和相关方法。 谐波抑制电路包括源极电压,两个抑制模块,两个输入端子,两个平滑的输出端子和接地。 ILFD包括接地,输入晶体管,输入端子,两个分频器脚,两个输出端子和源极电压。 改善谐波抑制的相关方法包括合成差分相位信号并同时抑制同相信号的二次谐波的动作。 扩展ILFD锁定范围的方法包括降低质量因子的作用,同时保持共振频率不变。
    • 9. 发明授权
    • Multimode millimeter-wave frequency divider circuit with multiple presettable frequency dividing modes
    • 多模式毫米波分频电路,具有多种可预置分频模式
    • US07898304B2
    • 2011-03-01
    • US12568828
    • 2009-09-29
    • Shey-Shi LuHsien-Ku Chen
    • Shey-Shi LuHsien-Ku Chen
    • H03B19/06
    • H03B19/14H03B5/1215H03B5/1228H03B5/124H03B2200/0034H03B2200/0074H03L7/18
    • A multimode millimeter-wave frequency divider circuit with multiple selectable frequency dividing modes is proposed, which is designed for integration with a millimeter wave (MMW) circuit system, such as a phase-locked loop (PLL) circuit, for providing multimode frequency dividing functions. In actual application, the millimeter wave frequency divider circuit of multi frequency dividing mode provides at least three frequency dividing operational modes, including modes of dividing two, dividing 3 and dividing four. In practice, the millimeter wave frequency divider circuit of multi frequency divider mode may be integrated with a millimeter wave phase-locked circuit to provide a frequency synthetic function having multi frequency sections, such as including 38 GHZ, 60 GHZ and 77 GHZ, and may use reduced circuit layout surfaces and operational power.
    • 提出了一种具有多种可选分频模式的多模毫米波分频电路,其设计用于与诸如锁相环(PLL)电路的毫米波(MMW)电路系统集成,用于提供多模分频功能 。 在实际应用中,多分频模式的毫米波分频电路至少提供三种分频运行模式,包括分频,分频,四分频模式。 实际上,多分频模式的毫米波分频器电路可以与毫米波锁相电路集成,以提供具有多频段的频率合成功能,例如包括38GHZ,60GHZ和77GHZ,并且可以 使用减少的电路布局表面和操作电源。