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    DUAL-MODE OSCILLATOR AND MULTI-PHASE OSCILLATOR
    71.
    发明公开
    DUAL-MODE OSCILLATOR AND MULTI-PHASE OSCILLATOR 审中-公开

    公开(公告)号：EP3319229A3

    公开(公告)日：2018-08-08

    申请号：EP17191767.7

    申请日：2017-09-19

    Applicant: HUAWEI TECHNOLOGIES CO., LTD.

    Inventor： SHU, Yiyang ,  QIAN, Huizhen ,  LUO, Xun

    IPC: H03B5/12 ,  H03B27/00

    CPC classification number: H03B5/02 ,  H03B5/1212 ,  H03B5/1218 ,  H03B5/1228 ,  H03B5/1243 ,  H03B5/1265 ,  H03B5/1296 ,  H03B27/00 ,  H03B2200/0074 ,  H03B2200/009 ,  H03B2201/0266

    Abstract: Embodiments of this application disclose a dual-mode oscillator and a multi-phase oscillator. In the dual-mode oscillator, switching between two operating modes is implemented by using a mode switching circuit, so that oscillation signals having two different bands can be obtained. Moreover, the dual-mode oscillator includes two transformer-coupled oscillators, and a step-up transformer in any transformer-coupled oscillator multiplies a drain voltage swing of a first MOS transistor and then injects a voltage signal to a gate of a second MOS transistor, so that a larger gate voltage swing is obtained without increasing a supply voltage of the oscillator, and phase noise performance of the dual-mode oscillator is improved. In the multi-phase oscillator, multiple dual-mode transformer-coupled oscillators are connected through multi-phase coupled circuits to form a Mobius loop, so that oscillation signals in multiple phases can be generated, and phase noise performance of the entire oscillator can be improved.

    A RADIO FREQUENCY OSCILLATOR
    73.
    发明公开
    A RADIO FREQUENCY OSCILLATOR 审中-公开
    一个无线电频率振荡器

    公开(公告)号：EP3158640A1

    公开(公告)日：2017-04-26

    申请号：EP15701359.0

    申请日：2015-01-27

    Applicant: HUAWEI TECHNOLOGIES CO., LTD.

    Inventor： SHAHMOHAMMADI, Mina ,  BABAIE, Masoud ,  STASZEWSKI, Robert

    IPC: H03B5/12

    CPC classification number: H03B5/1243 ,  H03B5/1218 ,  H03B5/1228 ,  H03B5/1262 ,  H03B5/1296 ,  H03B2201/0266

    Abstract: The invention relates to a radio frequency oscillator (100), the radio frequency oscillator (100) comprising a resonator circuit (101) being resonant at an excitation of the resonator circuit (101) in a differential mode and at an excitation of the resonator circuit (101) in a common mode, wherein the resonator circuit (101) has a differential mode resonance frequency at the excitation in the differential mode, and wherein the resonator circuit (101) has a common mode resonance frequency at the excitation in the common mode, a first excitation circuit (103) being configured to excite the resonator circuit (101) in the differential mode to obtain a differential mode oscillator signal oscillating at the differential mode resonance frequency, and a second excitation circuit (105) being configured to excite the resonator circuit (101) in the common mode to obtain a common mode oscillator signal oscillating at the common mode resonance frequency.

    Abstract translation: 本发明涉及射频振荡器（100），射频振荡器（100）包括谐振器电路（101），谐振器电路在谐振器电路（101）的激励下以差模和激励谐振器电路 （101），其中所述谐振器电路（101）在所述差模中的激励时具有差模谐振频率，并且其中所述谐振器电路（101）在所述共模中的激励处具有共模谐振频率 ，第一激励电路（103）被配置为在差模模式下激励谐振器电路（101）以获得在差模谐振频率下振荡的差模振荡器信号，第二激励电路（105）被配置为激励 谐振器电路（101），以获得以共模谐振频率振荡的共模振荡器信号。

    Apparatus and method for digitally controlling capacitance
    76.
    发明公开
    Apparatus and method for digitally controlling capacitance 审中-公开
    Vorrichtung und Verfahren zur digitalenKapazitätssteuerung

    公开(公告)号：EP2403134A2

    公开(公告)日：2012-01-04

    申请号：EP10189160.4

    申请日：2010-10-28

    Applicant: RichWave Technology Corp.

    Inventor： Chen, Tse-Peng

    IPC: H03B5/12

    CPC classification number: H03B5/1228 ,  H03B5/1212 ,  H03B5/1265 ,  H03B2201/0266 ,  H03J3/20 ,  H03J2200/10

    Abstract: An oscillator circuit having a source of an oscillating signal, a tank circuit including an inductor (18, 420, 421) and a capacitor (18, 420, 421), and a discretely switchable capacitance module (14, 314) configured to control an amount of capacitance in the oscillator circuit. The discretely switchable capacitance module (14, 314) includes, a capacitor (22, 322) coupled between a first node (41, 341) and a second node (42, 342), a switch (24, 320) coupled between the second node (42, 322) and a third node (43, 343); and a DC feed circuit (28, 328, 329), having a first end (28a, 328a, 329a) coupled to the second node (42) and a second end (28b, 328b, 329b) configured to receive a first or second control signal (30, 330). The control node (25, 325) of the switch (24, 320) is tied to a predetermined bias voltage (26, 326). When the first control signal (30, 330) is applied, the capacitor (22) is coupled between the first node (41, 341) and the third node (43, 343) via the switch (24, 320), and when the second control signal (30, 330) is applied the capacitor (22) is decoupled from the inductor (18, 420, 421).

    Abstract translation: 一种具有振荡信号源的振荡器电路，包括电感器（18,420,421）和电容器（18,420,421）的振荡电路以及可分离可切换电容模块（14,314），其被配置为控制 振荡电路中的电容量。 离散可切换电容模块（14,314）包括耦合在第一节点（41,341）和第二节点（42,342）之间的电容器（22,322），耦合在第二节点 节点（42,322）和第三节点（43,43）; 以及具有耦合到第二节点（42）的第一端（28a，328a，329a）和第二端（28b，328b，329b）的DC馈电电路（28,328,329），其被配置为接收第一或第二 控制信号（30,330）。 开关（24,320）的控制节点（25,325）被连接到预定的偏置电压（26,326）。 当施加第一控制信号（30,330）时，电容器（22）经由开关（24,320）耦合在第一节点（41,341）和第三节点（43,43）之间，并且当 施加第二控制信号（30,330），电容器（22）与电感器（18,420,421）分离。

    VARIABLE OSCILLATOR AND FILTER CIRCUIT
    78.
    发明授权
    VARIABLE OSCILLATOR AND FILTER CIRCUIT 有权
    可变振荡器滤波电路

    公开(公告)号：EP1198878B1

    公开(公告)日：2003-10-08

    申请号：EP00946137.7

    申请日：2000-07-18

    Applicant: Cambridge Silicon Radio Limited

    Inventor： COLLIER, James Digby Yarlet ,  SABBERTON, Ian Michael

    IPC: H03B5/12

    CPC classification number: H03J3/08 ,  H03B5/1265 ,  H03B2201/0266 ,  H03J2200/10

    Abstract: A radio transmitter and/or receiver comprising: an oscillator tuning circuit comprising an adjustable capacitor whose capacitance is adjustable my means of a first tuning signal; a filter tuning circuit comprising an adjustable capacitor whose capacitance is adjustable by means of a second tuning signal; an oscillator whose operational frequency is dependant on the reactance of the oscillator tuning circuit; a filter for filtering signals in the course of transmission and/or reception, and whose response is dependant on the reactance of the filter tuning circuit; and a tuning unit for generating the first and second tuning signals; wherein at least a part of the filter tuning circuit is a replica of at least a part of the oscillator tuning circuit and the tuning circuit is capable of generating one of the first and second tuning signals in dependence on the other of the tuning signals.

    TUNABLE RESONANT CIRCUIT IN AN INTEGRATED CIRCUIT
    80.
    发明申请
    TUNABLE RESONANT CIRCUIT IN AN INTEGRATED CIRCUIT 审中-公开
    集成电路中的可调谐谐振电路

    公开(公告)号：WO2012050676A1

    公开(公告)日：2012-04-19

    申请号：PCT/US2011/050048

    申请日：2011-08-31

    Applicant: XILINX. INC.

    Inventor： UPADHYAYA, Parag ,  KIREEV, Vassili

    IPC: H03B5/12

    CPC classification number: H03B5/1228 ,  H03B5/1212 ,  H03B5/124 ,  H03B5/1262 ,  H03B5/1265 ,  H03B2201/02 ,  H03B2201/0208 ,  H03B2201/0266

    Abstract: A tunable resonant circuit (102) includes first capacitors (104, 108, 216, 228, 232) and second capacitors (106, 1 10, 218, 230, 234) that provide a matched capacitance between first and second electrodes of the first and second capacitors. A deep-well arrangement includes a first well (320, 326) disposed within a second well (322, 328) in a substrate (324). The first and second capacitors are each disposed on the first well. Two channel electrodes of a first transistor (120, 130) are respectively coupled to the second electrode (1 14, 304) of the first capacitor and the second electrode (1 18, 308) of the second capacitor. Two channel electrodes of a second transistor (122, 132) are respectively coupled to the second electrode of the first capacitor and to ground. Two channel electrodes of the third transistor (124, 134) are respectively coupled to the second electrode of the second capacitor and to ground. The gate electrodes (226, 314) of the first, second, and third transistors are responsive to a tuning signal (126, 136), and an inductor (144, 202) is coupled between the first electrodes (1 12, 1 16, 302, 306) of the first and second capacitors.

    Abstract translation: 可调谐谐振电路（102）包括在第一和第二电极之间提供匹配电容的第一电容器（104,108,216,228,232）和第二电容器（106,110,218,230,234） 第二电容器。 深井布置包括设置在衬底（324）中的第二阱（322,328）内的第一阱（320,326）。 第一和第二电容器各自设置在第一阱上。 第一晶体管（120,130）的两沟道电极分别耦合到第一电容器的第二电极（114）和第二电容器的第二电极（118,188）。 第二晶体管（122,132）的两沟道电极分别耦合到第一电容器的第二电极并接地。 第三晶体管（124,134）的两沟道电极分别耦合到第二电容器的第二电极并接地。 第一，第二和第三晶体管的栅极电极（226,314）对调谐信号（126,136）作出响应，并且电感器（144,202）耦合在第一电极（112,126， 302,306）的第一和第二电容器。

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