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    VOLTAGE-CONTROLLED OSCILLATOR FOR PRODUCING MULTIPLE FREQUENCY BANDS
    91.
    发明公开
    VOLTAGE-CONTROLLED OSCILLATOR FOR PRODUCING MULTIPLE FREQUENCY BANDS 审中-公开
    SPANNUNGSGESTEUERTER OSZILLATOR DER MEHREREFREQUENZBÄNDERERZEUGT

    公开(公告)号：EP1162728A1

    公开(公告)日：2001-12-12

    申请号：EP01900691.5

    申请日：2001-01-12

    Applicant: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.

    Inventor： AKATSUKA, Terumoto

    IPC: H03B5/12 ,  H03B5/02

    CPC classification number: H03B5/1231 ,  H03B5/1209 ,  H03B5/1243 ,  H03B5/1262 ,  H03B2201/025

    Abstract: An object of the present invention is to provide a multi-band voltage-controlled oscillator in which switching means can certainly be turned on and off. For achieving the above object, the oscillator of the present invention includes a negative source generator (67) coupled to an output of a buffer transistor (22) from which an oscillation frequency of an oscillating transistor (21) is released, switching means (40) for selectively switching between an output of the negative source generator (67) and a positive power source, and mode switching means (66) receiving an output frequency switching signal from the outside. An output of the switching means (40) controls an opening and short-circuiting operation of first switching means (38a) to selectively release oscillation outputs in a low frequency band and high frequency band from an output port (49).

    Abstract translation: 本发明的目的是提供一种多频带压控振荡器，其中切换装置当然可以被接通和断开。 为了实现上述目的，本发明的振荡器包括耦合到缓冲晶体管（22）的输出端的负电源发生器（67），摆放晶体管（21）的振荡频率从该缓冲晶体管的输出端被释放，开关装置 ），用于选择性地切换负源发生器（67）的输出和正电源之间，以及从外部接收输出频率切换信号的模式切换装置（66）。 切换装置（40）的输出控制第一切换装置（38a）的打开和短路操作，以选择性地从输出端口（49）释放低频带和高频带中的振荡输出。

    IMPROVEMENTS IN THE FINE TUNING OF ELECTRONIC OSCILLATORS
    94.
    发明申请
    IMPROVEMENTS IN THE FINE TUNING OF ELECTRONIC OSCILLATORS 审中-公开
    电子振荡器微调中的改进

    公开(公告)号：WO2011001168A1

    公开(公告)日：2011-01-06

    申请号：PCT/GB2010/051062

    申请日：2010-06-28

    Applicant: EOSEMI LIMITED ,  HARROLD, Stephen John

    Inventor： HARROLD, Stephen John

    IPC: H03B5/12 ,  H03J3/00

    CPC classification number: H03L7/00 ,  H03B5/1265 ,  H03B5/1268 ,  H03B2201/025 ,  H03J3/20

    Abstract: According to the invention there is provided a method of producing an output signal including the steps of: providing an electronic oscillator having a switching arrangement allowing the oscillator to be switched between at least a first configuration having an associated first oscillator frequency and period, and a second configuration having an associated second oscillator frequency and period, and a control arrangement for controlling the switching arrangement; dithering the oscillator between at least the first configuration and the second configuration to produce the output signal, having an intermediate frequency and period, in which the dithering is performed by switching from the first configuration to the second configuration for a pre-determined subset of each output signal period over successive cycles of the output signal frequency.

    Abstract translation: 根据本发明，提供了一种产生输出信号的方法，包括以下步骤：提供一种电子振荡器，该电子振荡器具有允许振荡器在具有相关联的第一振荡器频率和周期的至少第一配置和 具有关联的第二振荡器频率和周期的第二配置和用于控制切换装置的控制装置; 在至少第一配置和第二配置之间使振荡器抖动以产生具有中间频率和周期的输出信号，其中通过从每个的预定子集切换从第一配置到第二配置来执行抖动 在输出信号频率的连续周期上输出信号周期。

    SYSTEM FOR CONTROLLING THE FREQUENCY OF AN OSCILLATOR
    96.
    发明申请
    SYSTEM FOR CONTROLLING THE FREQUENCY OF AN OSCILLATOR 审中-公开
    用于控制振荡器频率的系统

    公开(公告)号：WO02080351A8

    公开(公告)日：2003-01-09

    申请号：PCT/US0209243

    申请日：2002-03-25

    Applicant: CONEXANT SYSTEMS INC

    Inventor： DAMGAARD MORTEN ,  DOMINO WILLIAM J ,  MAGOON RAHUL ,  MOLNAR ALYOSHA C ,  ZACHAN JEFF

    IPC: H03B1/00 ,  H03L5/00 ,  H03L7/087 ,  H03L7/099 ,  H03L7/113 ,  H03L7/187 ,  H04B1/40 ,  H03D3/24 ,  H03L7/00 ,  H03L7/06 ,  H04B1/06 ,  H04B1/18 ,  H04B1/26 ,  H04L25/49 ,  H04L27/06

    CPC classification number: H03L7/099 ,  H03B2201/025 ,  H03B2201/0291 ,  H03J2200/10 ,  H03L5/00 ,  H03L7/087 ,  H03L7/113

    Abstract: Systems for controlling the frequency of the output signal of a controllable oscillator (202) in a frequency synthesizer (200) are provided. One such system comprises a controllable oscillator (202) and a frequency control circuit (208). The controllable oscillator (202) is configured to generate an output signal that has a predefined frequency. The controllable oscillator (202) is also configured with a plurality of operational states that are controlled by the frequency control circuit (208). Each operational state of the controllable oscillator (202) defines a distinct frequency for the output signal of the controllable oscillator (202). The frequency control circuit (208) receives the output signal of the controllable oscillator (202) and determines the distinct frequency for the output signal that best approximates the predefined frequency. The frequency control circuit (208) may also provide a control signal to the controllable oscillator (202) that is configured to change the controllable oscillator (202) to the operational state corresponding to the distinct frequency that best approximates the predefined frequency.

    Abstract translation: 提供了用于控制频率合成器（200）中的可控振荡器（202）的输出信号的频率的系统。 一个这样的系统包括可控振荡器（202）和频率控制电路（208）。 可控振荡器（202）被配置为产生具有预定频率的输出信号。 可控振荡器（202）还配置有由频率控制电路（208）控制的多个操作状态。 可控振荡器（202）的每个操作状态为可控振荡器（202）的输出信号定义不同的频率。 频率控制电路（208）接收可控振荡器（202）的输出信号，并确定最接近于预定频率的输出信号的不同频率。 频率控制电路（208）还可以向可控振荡器（202）提供控制信号，该控制信号被配置为将可控振荡器（202）改变到对应于最接近于预定频率的不同频率的操作状态。

    APPARATUS AND METHOD FOR CHANGING CRYSTAL OSCILLATOR FREQUENCY
    97.
    发明申请
    APPARATUS AND METHOD FOR CHANGING CRYSTAL OSCILLATOR FREQUENCY 审中-公开
    改变晶体振荡器频率的装置和方法

    公开(公告)号：WO0131774A9

    公开(公告)日：2002-08-08

    申请号：PCT/US0029437

    申请日：2000-10-26

    Applicant: ANALOG DEVICES INC

    Inventor： RANDERS ESBEN ,  BRETT STEPHEN J

    IPC: H03B1/00 ,  H03B5/32 ,  H03J7/04 ,  H03J7/08

    CPC classification number: H03B5/32 ,  H03B2201/0208 ,  H03B2201/025 ,  H03J7/04 ,  H03J7/08 ,  H03J2200/10

    Abstract: A programmable capacitor array is used to trim the frequency of a crystal oscillator for initial offset. An apparatus includes the crystal oscillator and an integrated circuit (36) is coupled to the crystal (30) of the oscillator. The programmable capacitor array (32) is formed on the integrated circuit and is coupled to the crystal (30) and is responsive to a signal for setting the capacitance of the capacitor array to one of a number of capacitance values. A discrete controllable capacitance device (V03) not one the integrated circuit is coupled to the crystal (30) and is responsive to a control signal (AFC) to change its capacitance. The crystal oscillator frequency is dependent on the capacitances of both the programmable capacitor array (32) and the discrete capacitor (V03).

    Abstract translation: 可编程电容阵列用于调整晶体振荡器的初始偏移频率。 一种装置包括晶体振荡器，并且集成电路（36）耦合到振荡器的晶体（30）。 可编程电容器阵列（32）形成在集成电路上并耦合到晶体（30），并且响应于用于将电容器阵列的电容设置为多个电容值中的一个的信号。 分立可控电容器件（V03）不是集成电路中的一个耦合到晶体（30），并响应于控制信号（AFC）来改变其电容。 晶体振荡器频率取决于可编程电容阵列（32）和分立电容（V03）的电容。

    VOLTAGE-CONTROLLED OSCILLATOR FOR PRODUCING MULTIPLE FREQUENCY BANDS
    98.
    发明申请
    VOLTAGE-CONTROLLED OSCILLATOR FOR PRODUCING MULTIPLE FREQUENCY BANDS 审中-公开
    用于生产多个频率波段的电压控制振荡器

    公开(公告)号：WO01052402A1

    公开(公告)日：2001-07-19

    申请号：PCT/JP2001/000116

    申请日：2001-01-12

    IPC: H03B1/00 ,  H03B5/12 ,  H03B5/18 ,  H03B5/02

    CPC classification number: H03B5/1231 ,  H03B5/1209 ,  H03B5/1243 ,  H03B5/1262 ,  H03B2201/025

    Abstract: A voltage-controlled oscillator for producing a plurality of frequency bands includes switch means that performs reliable on/off operation. The voltage-controlled oscillator comprises a negative power supply circuit (67) connected to the output of a buffer transistor (22) that outputs the oscillation frequency from an oscillation transistor (21), switch means (40) for selectively switching the output from the negative power supply circuit (67) and positive power supply, and a mode switch circuit (66) that receives an external output frequency switch signal. The on/off operation of first switch means (38a) is controlled according to the output from the switch means (40) so that low frequency and high-frequency bands can be selectively produced at the output terminal (49).

    Abstract translation: 用于产生多个频带的压控振荡器包括执行可靠的开/关操作的开关装置。 压控振荡器包括连接到从振荡晶体管（21）输出振荡频率的缓冲晶体管（22）的输出的负电源电路（67），用于选择性地切换来自振荡晶体管 负电源电路（67）和正电源，以及接收外部输出频率切换信号的模式切换电路（66）。 第一开关装置（38a）的开/关操作根据开关装置（40）的输出进行控制，从而可以在输出端（49）选择性地产生低频和高频带。

    APPARATUS AND METHOD FOR CHANGING CRYSTAL OSCILLATOR FREQUENCY
    99.
    发明申请
    APPARATUS AND METHOD FOR CHANGING CRYSTAL OSCILLATOR FREQUENCY 审中-公开
    改变晶体振荡器频率的装置和方法

    公开(公告)号：WO2001031774A1

    公开(公告)日：2001-05-03

    申请号：PCT/US2000/029437

    申请日：2000-10-26

    Applicant: ANALOG DEVICES, INC.

    Inventor： RANDERS, Esben ,  BRETT, Stephen, J.

    IPC: H03B5/32

    CPC classification number: H03B5/32 ,  H03B2201/0208 ,  H03B2201/025 ,  H03J7/04 ,  H03J7/08 ,  H03J2200/10

    Abstract: A programmable capacitor array is used to trim the frequency of a crystal oscillator for initial offset. An apparatus includes the crystal oscillator and an integrated circuit (36) is coupled to the crystal (30) of the oscillator. The programmable capacitor array (32) is formed on the integrated circuit and is coupled to the crystal (30) and is responsive to a signal for setting the capacitance of the capacitor array to one of a number of capacitance values. A discrete controllable capacitance device (V03) not one the integrated circuit is coupled to the crystal (30) and is responsive to a control signal (AFC) to change its capacitance. The crystal oscillator frequency is dependent on the capacitances of both the programmable capacitor array (32) and the discrete capacitor (V03).

    Abstract translation: 可编程电容阵列用于调整晶体振荡器的初始偏移频率。 一种装置包括晶体振荡器，并且集成电路（36）耦合到振荡器的晶体（30）。 可编程电容器阵列（32）形成在集成电路上并且耦合到晶体（30），并且响应于用于将电容器阵列的电容设置为多个电容值中的一个的信号。 分立可控电容器件（V03）不是集成电路中的一个耦合到晶体（30），并响应于控制信号（AFC）来改变其电容。 晶体振荡器频率取决于可编程电容阵列（32）和分立电容（V03）的电容。

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