Controllable quadrature oscillator
    52.
    发明公开
    Controllable quadrature oscillator 失效
    Regelbarer Quadraturoszillator。

    公开(公告)号:EP0371549A1

    公开(公告)日:1990-06-06

    申请号:EP89202963.8

    申请日:1989-11-22

    Abstract: Controllable quadrature oscillator having a pair of oscillator outputs (01, 02) for supplying a pair of phase quadrature oscillator signals, and a cascade circuit of two quadrature sections (A, B), which circuit is incorporated in a regenerative loop, one (B) of the two quadrature sections being arranged between the two oscillator outputs and realising a 90 o phase shift in the regenerative state of the loop. In order to increase the frequency control range of such a controllable quadrature oscillator and to provide the possibility of integration, at least the said quadrature section comprises a cascade circuit of two stages (B1, B2) arranged in a signal path between an input terminal and an output terminal, one stage (B1) comprising a first amplifier having a low-pass characteristic and the other stage comprising a second amplifier (B2) having a low-pass characteristic, said second amplifier having a feedback path, and the gain of at least one of the two amplifiers being controllable for controlling the frequency of the pair of phase quadrature oscillator signals.

    Abstract translation: 具有用于提供一对相位正交振荡器信号的一对振荡器输出(01,02)的可控正交振荡器和两个正交部分(A,B)的级联电路,该电路并入再生回路中,一个(B )被布置在两个振荡器输出之间并且在回路的再生状态下实现90°的相移。 为了增加这种可控正交振荡器的频率控制范围并且提供集成的可能性,至少所述正交部分包括布置在输入端和输入端之间的信号路径中的两级(B1,B2)的级联电路 输出端子,一级(B1),包括具有低通特性的第一放大器,另一级包括具有低通特性的第二放大器(B2),所述第二放大器具有反馈路径,并且在 两个放大器中的至少一个可控制以控制该对相位正交振荡器信号的频率。

    Phase lock loop gain control using unit current sources
    55.
    发明公开
    Phase lock loop gain control using unit current sources 有权
    Phasenregelschleifeverstärkungssteuerungmit Einheitsstromquellen

    公开(公告)号:EP1244215A1

    公开(公告)日:2002-09-25

    申请号:EP02252014.2

    申请日:2002-03-20

    Inventor: Gomez, Ramon A.

    Abstract: A gain compensator compensates for the gain variation of a varactor-tuned voltage tuned oscillator (VCO) in a phase lock loop (PLL). The VCO (222) includes a parallel LC circuit (228) having multiple fixed capacitors that can be switched-in or switched-out of the LC circuit according to a capacitor control signal to perform band-select tuning of the VCO. The gain compensator compensates for the variable VCO gain by generating a charge pump reference current that is based on the same capacitor control signal that controls the fixed capacitors in the LC circuit. The gain compensator generates the charge pump reference current by replicating a reference scale current using unit current sources. The number of times the reference scale current is replicated is based on the fixed capacitance that is switched-in to the LC circuit and therefore the frequency band of the PLL. The reference scale current is generated based on a PLL control that specifics certain PLL characteristics such as reference frequency, loop bandwidth, and loop damping. Therefore, the reference pump current can be efficiently optimized for changing PLL operating conditions, in addition to compensating for variable VCO gain.

    Abstract translation: 增益补偿器补偿锁相环(PLL)中变容二极管调谐电压调谐振荡器(VCO)的增益变化。 VCO(222)包括具有多个固定电容器的并联LC电路(228),该固定电容器可以根据电容器控制信号切换或切换出LC电路,以执行VCO的频带选择调谐。 增益补偿器通过产生基于控制LC电路中的固定电容器的相同电容器控制信号的电荷泵参考电流来补偿可变VCO增益。 增益补偿器通过使用单位电流源复制参考刻度电流来产生电荷泵参考电流。 参考比例电流复制的次数是基于切换到LC电路的固定电容,因此是PLL的频带。 参考比例电流是基于特定某些PLL特性(如参考频率,环路带宽和环路阻尼)的PLL控制产生的。 因此,除了补偿可变VCO增益之外,参考泵电流可以有效地优化用于改变PLL工作条件。

    Flip-chip MMIC resonator circuit with off-chip coplanar waveguide inductor.
    57.
    发明公开
    Flip-chip MMIC resonator circuit with off-chip coplanar waveguide inductor. 失效
    带芯片型共振波导谐振电感器的芯片MMIC振荡器组件

    公开(公告)号:EP0495206A3

    公开(公告)日:1993-01-13

    申请号:EP91121332.0

    申请日:1991-12-12

    Abstract: A coplanar waveguide based microwave monolithic integrated circuit (MMIC) oscillator chip (14) has an active oscillator element (16) and a resonant capacitor (18) formed thereon and is flip-chip mounted on a dielectric substrate (12). A resonant inductor (22) is formed on the substrate (12) and interconnected with the resonant capacitor (18) to form a high Q-factor resonant circuit for the oscillator (10). The resonant inductor (22) includes a shorted coplanar waveguide section (24) consisting of first and second ground strips (24b, 24c), and a conductor strip (24a) extending between the first and second ground strips (24b, 24c) in parallel relation thereto and being separated therefrom by first and second spaces (26a, 26b), respectively. A shorting strip (24d) electrically interconnects adjacent ends of the conductor strip (24a) and first and second ground strips (24b, 24c), respectively. A dielectric film (34) may be formed over at least adjacent portions of the conductor strip (24a) and first and second ground strips (24b, 24c). The resonant inductor (22) is adjusted to provide a predetermined resonant frequency for the oscillator (10) by using a laser to remove part of the dielectric film (34) in the first and second spaces (26a, 26b) for fine adjustment, and/or to remove part of the shorting strip (24d) at the ends of the first and second spaces (26a, 26b) for coarse adjustment.

    Merged current clamp in triple-input transconductor, for use in oscillator
    58.
    发明公开
    Merged current clamp in triple-input transconductor, for use in oscillator 失效
    三输入晶体管中的合并电流钳位,用于振荡器

    公开(公告)号:EP0484031A3

    公开(公告)日:1992-12-02

    申请号:EP91309742.4

    申请日:1991-10-22

    Applicant: AT&T Corp.

    Abstract: A clamped linear transconductance amplifier path, consisting essentially of a current clamp (M23) merged in a linear transconductance amplifier (M23, M21,M22) path, is used in a triple-input, single-output transconductor (200). In a balanced transconductor in CMOS technology, this clamped linear transconductance amplifier path is formed by a p-channel MOS transistor (M23) separately connected in series with each of a matched pair of p-channel MOS transistors (M21, M22). The clamped linear transconductance amplifier path, together with two other transconductance paths (M15-M20; M9-M14), can be interconnected to form the input side of the triple-input, single-output transconductor (200). By summing and integrating the outputs of the input side of the triple-input transconductor (200), the output (VOUT,P and VOUT,N) of the output side of the transconductor can be formed. By feeding back this output to the input side of the transconductor (200), an oscillator can obtained.

    Merged current clamp in triple-input transconductor, for use in oscillator
    59.
    发明公开
    Merged current clamp in triple-input transconductor, for use in oscillator 失效
    跨导放大器具有三个输入和用于在振荡器使用稠合电流钳位电路。

    公开(公告)号:EP0484031A2

    公开(公告)日:1992-05-06

    申请号:EP91309742.4

    申请日:1991-10-22

    Applicant: AT&T Corp.

    Abstract: A clamped linear transconductance amplifier path, consisting essentially of a current clamp (M23) merged in a linear transconductance amplifier (M23, M21,M22) path, is used in a triple-input, single-output transconductor (200). In a balanced transconductor in CMOS technology, this clamped linear transconductance amplifier path is formed by a p-channel MOS transistor (M23) separately connected in series with each of a matched pair of p-channel MOS transistors (M21, M22). The clamped linear transconductance amplifier path, together with two other transconductance paths (M15-M20; M9-M14), can be interconnected to form the input side of the triple-input, single-output transconductor (200). By summing and integrating the outputs of the input side of the triple-input transconductor (200), the output (VOUT,P and VOUT,N) of the output side of the transconductor can be formed. By feeding back this output to the input side of the transconductor (200), an oscillator can obtained.

    Abstract translation: 夹紧线性跨导放大器路径,基本上由电流钳(M23)的以线性跨导放大器(M23,M21,M22)的路径,是在三输入,三输出跨导器(200)使用合并。 在CMOS技术中一个平衡跨,此夹紧线性跨导放大器路径由一个p沟道MOS晶体管(M23)分别串联连接各一对匹配的p沟道MOS晶体管(M21,M22)的形成。 被夹紧的线性跨导放大器路径,与其他在一起的两个跨导路径(M15-M20; M9-M14),可以相互连接以形成三输入的输入侧,三输出跨导器(200)。 通过求和与INTEGRA婷三重输入跨(200)的输入侧的输出,跨导器的输出侧的输出(VOUT,P和V OUT,N)可以被形成。 通过反馈该输出到振荡器的跨导器(200)的输入侧可以得到。

    Abstimmbarer Resonanzverstärker oder Oszillator
    60.
    发明公开
    Abstimmbarer Resonanzverstärker oder Oszillator 失效
    谐振放大器或振荡器

    公开(公告)号:EP0429896A3

    公开(公告)日:1991-10-23

    申请号:EP90121184.7

    申请日:1990-11-06

    CPC classification number: H03B5/24 H03B2201/02 H03H11/1213

    Abstract: Bei einem abstimmbaren Resonanzverstärker oder Oszillator sind eine erste (DS1) und eine zweite (DS2) Differenzstufe vorgesehen und die erste Differenzstufe wird von einer ersten Stromquelle (I1) und die zweite Differenzstufe wird von einer zweiten Stromquelle (I2) gespeist. Die Ausgangsanschlußpaare (A1,A2;A3,A4) der ersten und zweiten Differenzstufe sind mit je einem Kondensator (C1;C2) beschaltet und die Ausgangsanschlüsse der ersten und zweiten Differenzstufe sind mit je einer dritten bis sechsten Stromquelle (I3,I4;I5,I6) verbunden. Der Eingang (E1, E2) der ersten Differenzstufe ist mit dem Ausgang der zweiten Differenzstufe und der Ein­gang (E3, E4) der zweiten Differenzstufe ist mit dem Ausgang der ersten Differenz­stufe verbunden. Die Eingänge der fünften und sechsten Stromquelle sind über ein ersten Koppelglied (T9) mit dem Einspeisepunkt (B1) der ersten Stromquelle und die Eingänge der dritten und vierten Stromquelle sind über ein zweites Koppelglied (T10) mit dem Einspeisepunkt (B2) der zweiten Stromquelle verbunden.

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