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    Low phase-noise oscillator
    41.
    发明授权
    Low phase-noise oscillator 有权
    低相位噪声振荡器

    公开(公告)号：US07847650B2

    公开(公告)日：2010-12-07

    申请号：US11957482

    申请日：2007-12-17

    Applicant: Chih-Wei Yao ,  Alan Neil Willson, Jr.

    Inventor： Chih-Wei Yao ,  Alan Neil Willson, Jr.

    IPC: H03B5/08 ,  H03B5/18

    CPC classification number: H03B27/00 ,  H03B5/1212 ,  H03B5/1215 ,  H03B5/1228 ,  H03B5/1253 ,  H03B2200/0074

    Abstract: A tail-tank coupling technique combines two complementary differential LC-VCOs to form a quadrature LC-VCO. The technique reduces phase noise by providing additional energy storage for noise redistribution and by cancelling noise injected by transistors when they operate in the triode region. The resulting noise factor is close to the theoretical minimum 1+γ, similar to a differential LC-VCO driven by an ideal noiseless current source. However, its figure-of-merit is higher, due to the absence of voltage head-room being consumed by a current source. The optimal ratio of tail-tank capacitor to main-tank capacitor for minimizing phase noise is approximately 0.5. The method can be extended to combine any even number of LC tanks resonating at fo and 2fo to form an integrated oscillator producing quadrature phase at frequency fosc and differential output at 2fosc.

    Abstract translation: 尾箱耦合技术结合了两个互补的差分LC-VCO来形成正交LC-VCO。 该技术通过为噪声再分配提供额外的能量存储并通过消除晶体管在三极管区域中工作时注入的噪声来降低相位噪声。 所产生的噪声系数接近理论最小值1 +γ，类似于由理想无噪声电流源驱动的差分LC-VCO。 然而，由于电流源没有电压头部消耗，其品质因数更高。 用于最小相位噪声的尾箱电容器与主柜电容器的最佳比例约为0.5。 该方法可以扩展到组合在fo和2fo共振的任何偶数个LC箱，以形成一个集成振荡器，产生频率fosc的正交相位和在2fosc处的差分输出。

    MULTIMODE MILLIMETER-WAVE FREQUENCY DIVIDER CIRCUIT WITH MULTIPLE PRESETTABLE FREQUENCY DIVIDING MODES
    42.
    发明申请
    MULTIMODE MILLIMETER-WAVE FREQUENCY DIVIDER CIRCUIT WITH MULTIPLE PRESETTABLE FREQUENCY DIVIDING MODES 有权
    具有多种预置频率分频模式的多模微波波分频电路

    公开(公告)号：US20100271082A1

    公开(公告)日：2010-10-28

    申请号：US12568828

    申请日：2009-09-29

    Applicant: Shey-Shi Lu ,  Hsien-Ku Chen

    Inventor： Shey-Shi Lu ,  Hsien-Ku Chen

    IPC: H03B19/14

    CPC classification number: H03B19/14 ,  H03B5/1215 ,  H03B5/1228 ,  H03B5/124 ,  H03B2200/0034 ,  H03B2200/0074 ,  H03L7/18

    Abstract: 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.

    Abstract translation: 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。

    Low power consumption frequency divider circuit
    44.
    发明授权
    Low power consumption frequency divider circuit 失效
    低功耗分频电路

    公开(公告)号：US07446617B2

    公开(公告)日：2008-11-04

    申请号：US11606071

    申请日：2006-11-30

    Applicant: Sheng Lyang Jang ,  Yun Hsueh Chuang

    Inventor： Sheng Lyang Jang ,  Yun Hsueh Chuang

    IPC: H03B5/12 ,  H03L7/24

    CPC classification number: H03B19/14 ,  H03B5/1212 ,  H03B5/1218 ,  H03B5/1228 ,  H03B5/124 ,  H03B2200/0074

    Abstract: The present invention discloses a low power consumption frequency divider circuit. It mainly comprises a signal source; a signal injection circuit; and an oscillator circuit. The low-power consumption frequency divider circuit according to the present invention mainly uses the configuration of current reused circuit to form the common current path for reducing the power loss in the disclosed frequency divider circuit.

    Abstract translation: 本发明公开了一种低功耗分频电路。 它主要包括信号源; 信号注入电路; 和振荡电路。 根据本发明的低功耗分频器电路主要使用电流重用电路的配置来形成用于降低所公开的分频器电路中的功率损耗的公共电流路径。

    Low phase noise differential LC tank VCO with current negative feedback
    47.
    发明申请
    Low phase noise differential LC tank VCO with current negative feedback 有权
    具有电流负反馈的低相位噪声差分LC槽VCO

    公开(公告)号：US20070132521A1

    公开(公告)日：2007-06-14

    申请号：US11518233

    申请日：2006-09-11

    Applicant: Ja Lee ,  Sang Lee

    Inventor： Ja Lee ,  Sang Lee

    IPC: H03B5/08

    CPC classification number: H03B5/1231 ,  H03B5/1212 ,  H03B5/1243 ,  H03B2200/0074

    Abstract: A differential voltage controlled oscillator (VCO) employed in a frequency synthesizer used as a local oscillator of a wireless communication on-chip transmitter/receiver is provided. More particularly, a differential current negative feedback VCO equipped with a current-current negative feedback circuit that suppresses low- and high-frequency noise is provided. A differential current negative feedback VCO includes a resonator determining oscillation frequency, and an oscillator generating negative resistance. In the oscillator of the differential current negative feedback VCO, transistors Q1 and Q2 form a cross-coupled pair, and negative resistance is generated by positive feedback of the cross-coupled pair. And, transistors Q1 and Q3 together with an emitter resistor and a capacitor form a current negative feedback part, and transistors Q2 and Q4 together with an emitter resistor and a capacitor form another current negative feedback part which is disposed opposite to a resonator. Thus, the VCO operates differentially. In the oscillator of the differential current negative feedback VCO, emitter noise currents generated by base noise voltages of Q1 and Q2 induced by low- and high-frequency noise sources in the bases of Q1 and Q2 are sampled by emitter resistors, amplified through bases of Q3 and Q4, and thus return to the bases of the Q1 and Q2 and suppress the base noise voltages. Measurement of the phase noise of the differential current negative feedback VCO reveals a phase noise reduction of approximately 25 dB compared to a conventional differential VCO.

    Abstract translation: 提供了用作无线通信片上发送器/接收器的本地振荡器的频率合成器中使用的差分压控振荡器（VCO）。 更具体地，提供了配备有抑制低频和高频噪声的电流 - 电流负反馈电路的差动电流负反馈VCO。 差分电流负反馈VCO包括确定振荡频率的谐振器和产生负电阻的振荡器。 在差动电流负反馈VCO的振荡器中，晶体管Q 1和Q 2形成交叉耦合对，负电阻由交叉耦合对的正反馈产生。 并且，晶体管Q 1和Q 3与发射极电阻器和电容器一起形成电流负反馈部分，并且晶体管Q 2和Q 4与发射极电阻器和电容器一起形成另一个电流负反馈部分，其与 谐振器。 因此，VCO差分工作。 在差动电流负反馈VCO的振荡器中，由Q 1和Q 2基极引起的低频和高频噪声源引起的基本噪声电压Q 1和Q 2产生的发射极噪声电流由发射极电阻进行采样， 通过Q 3和Q 4的基极放大，从而返回Q 1和Q 2的基极并抑制基极噪声电压。 差分电流负反馈VCO的相位噪声的测量与常规差分VCO相比，相位噪声降低约25 dB。

    Mixer which assures satisfactory performance even at low supply voltage
    48.
    发明授权
    Mixer which assures satisfactory performance even at low supply voltage 失效

    公开(公告)号：US06828844B2

    公开(公告)日：2004-12-07

    申请号：US10628213

    申请日：2003-07-28

    Applicant: Takeo Suzuki ,  Osamu Tatsumi

    Inventor： Takeo Suzuki ,  Osamu Tatsumi

    IPC: H04B128

    CPC classification number: H03D7/1425 ,  H03B5/1212 ,  H03B5/1231 ,  H03B2200/0074 ,  H03D7/1433 ,  H03D7/1458

    Abstract: A mixer has a first transistor and a second transistor which constitute a balanced oscillation circuit with their respective emitters connected with each other; a third transistor whose emitter is connected with the emitter of the first transistor; and a fourth transistor whose emitter is connected with the emitter of the second transistor. A first signal is inputted between a base of the third transistor and a base of the fourth transistor in a balanced way; and the third transistor and the fourth transistor mix an oscillation signal with the first signal and a second signal is outputted from the third transistor and the fourth transistor in a balanced way.

    Dielectric resonator feed back stabilizer
    49.
    发明授权
    Dielectric resonator feed back stabilizer 失效
    介质谐振器反馈稳定器

    公开(公告)号：US5103194A

    公开(公告)日：1992-04-07

    申请号：US632801

    申请日：1990-12-24

    Applicant: Bernard E. Sigmon

    Inventor： Bernard E. Sigmon

    IPC: H03B5/18 ,  H03B9/00 ,  H03B9/14

    CPC classification number: H03B9/14 ,  H03B5/1864 ,  H03B9/00 ,  H03B2200/0074

    Abstract: A dielectric resonator feed back stabilizer comprising a circulator, 3-dB, 90.degree. hybrid dielectric resonator, and isolator. The circulator provides an input electromagnetic signal from a source to the hybrid, which splits the input signal into two outputs with 90.degree. relative phase difference. One hybrid output is to the load and the other is to a dielectric resonator with high Q. The dielectric resonator reflects a portion of the input signal corresponding to the dielectric resonator operating frequency back to the hybrid which splits the reflected signal into two outputs 90 degree relative phase difference. The first signal reflected back through the hybrid, 180 degrees out of phase with the hybrid input signal from the circulator, is cancelled by superposition with the hybrid input signal. The second reflected signal travels through an isolator to the circulator injection locks the source input signal.

    Abstract translation: 一种介质谐振器反馈稳定器，包括循环器，3-dB，90°混合介质谐振器和隔离器。 循环器提供从源到混合器的输入电磁信号，将输入信号分解成具有90°相对相位差的两个输出。 一个混合输出是负载，另一个是具有高Q的介质谐振器。介质谐振器将对应于介质谐振器工作频率的输入信号的一部分反射回混合，将反射信号分成两个输出90度 相对相位差。 通过与混合输入信号的叠加来抵消来自环行器的混合输入信号与混合信号反向180度异相的第一信号被抵消。 第二反射信号通过隔离器传播到环行器注入锁定源输入信号。

    Microwave oscillator injection locked at its fundamental frequency for producing a harmonic frequency output
    50.
    发明授权
    Microwave oscillator injection locked at its fundamental frequency for producing a harmonic frequency output 失效
    微波振荡器注入锁定在其基频以产生谐波频率输出

    公开(公告)号：US4568890A

    公开(公告)日：1986-02-04

    申请号：US558657

    申请日：1983-12-06

    Applicant: Robert N. Bates

    Inventor： Robert N. Bates

    IPC: H03B9/12 ,  H03B1/00 ,  H03B9/14 ,  H03L7/24 ,  H03B7/14

    CPC classification number: H03B9/146 ,  H03B2200/0074 ,  H03B2201/014

    Abstract: A microwave oscillator suitable for millimeter wavelengths comprises a Gunn diode (3) coupled to a waveguide (1) by a resonant-cap structure (5,6). The diode (3) generates microwave energy both at a fundamental frequency f.sub.o which is below the cut-off frequency of the waveguide (1) and at a second harmonic frequency 2f.sub.o above cut-off. To control the generation of microwave energy at 2f.sub.o, energy at f.sub.o is coupled into the waveguide (1) from an adjacent further waveguide (9) above its cut-off, by means of an electric probe (8) extending close to the cap (5). The probe (8) may couple in a locking signal at or close to the free-running value of f.sub.o from another oscillator having better noise performance and electronic tuning, thereby locking 2f.sub.o to twice the frequency of the locking signal, or alternatively may couple to a varactor-tuned cavity resonant at f.sub.o.

    Abstract translation: 适用于毫米波长的微波振荡器包括通过共振盖结构（5,6）耦合到波导（1）的耿氏二极管（3）。 二极管（3）在低于波导（1）的截止频率的基频f 0处产生微波能量，并且在截止频率以上的二次谐波频率2θ处产生微波能量。 为了控制在2fo处的微波能量的产生，在fo处的能量通过靠近盖子延伸的电探针（8）从邻近的其它波导（9）耦合到波导（1）中， 5）。 探头（8）可以以等于或接近于具有更好的噪声性能和电子调谐的另一个振荡器的自由运行值fo的锁定信号耦合，从而将2fo锁定到锁定信号的频率的两倍，或者可以耦合到 一个变容二极管谐振谐振腔。

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