公开(公告)号：JP2015035707A

公开(公告)日：2015-02-19

申请号：JP2013165388

申请日：2013-08-08

Applicant: セイコーエプソン株式会社 ,  Seiko Epson Corp

Inventor： YONEYAMA TAKESHI

IPC: H03B5/32 ,  H03K3/0231

CPC classification number: H03B5/36 ,  H03B5/04 ,  H03B5/30 ,  H03B2201/0208 ,  H03B2201/025 ,  H03B2201/038 ,  H03L1/022 ,  H03L1/026 ,  H03L1/028

Abstract: 【課題】電源電圧の切り替え動作によって発振周波数の補償部が誤動作を起こすおそれを低減することが可能な発振回路の制御方法、発振用回路、発振器、電子機器及び移動体を提供すること。【解決手段】発振回路2は、メイン電源4及びバックアップ電源5から電力が供給される温度補償部14と、温度補償部14からの信号により機能が補償される発振部12と、温度補償部14が動作していないときにメイン電源4及びバックアップ電源5のうち少なくとも1つを選択して温度補償部14との接続を制御するスイッチ50及び電源監視回路60と、を備えている。【選択図】図1

Abstract translation: 要解决的问题：提供一种用于控制振荡电路的方法，振荡电路，振荡器，电子设备和移动体，其降低电源电压切换操作将导致振荡频率补偿部分发生故障的风险。 解决方案：振荡电路2包括：从主电源4和备用电源5供电的温度补偿部14; 通过来自温度补偿部分14的信号功能地补偿的振荡部分12; 以及开关50和电源监视电路60，在温度补偿部14不工作的情况下，选择主电源4和备用电源5中的至少一个，并控制与温度补偿部14的连接 。

公开(公告)号：EP2666239B1

公开(公告)日：2015-11-18

申请号：EP12702067.5

申请日：2012-01-19

Applicant: Nordic Semiconductor ASA

Inventor： BRUSET, Ola ,  VEDAL, Tor Øyvind

IPC: H03K5/135 ,  G06F1/08

CPC classification number: H03L7/24 ,  G06F1/08 ,  H03B5/20 ,  H03B5/32 ,  H03B2201/025 ,  H03K5/135

公开(公告)号：EP2009783A4

公开(公告)日：2013-12-25

申请号：EP08720373

申请日：2008-03-07

Applicant: PANASONIC CORP

Inventor： TAKESHI FUJII ,  YASUO OOBA ,  MINEYUKI IWAIDA ,  HIROAKI OZEKI

IPC: H03B5/12 ,  H03L7/087 ,  H03L7/099 ,  H03L7/10 ,  H03L7/18 ,  H04B1/26

CPC classification number: H03L7/10 ,  H03B5/1215 ,  H03B5/1231 ,  H03B5/1265 ,  H03B2201/0208 ,  H03B2201/025 ,  H03J2200/10 ,  H03L7/087 ,  H03L7/099 ,  H03L7/18 ,  H03L2207/06

Abstract: A broad oscillation frequency range and good phase noise characteristic are achievable simultaneously by an oscillation circuit and a resonance circuit connected to the oscillation circuit. The resonance circuit includes an inductor element connected to the oscillation circuit, a first variable capacitance section connected to the inductor element, and a second variable capacitance section connected in parallel to the first variable capacitance section. The first variable capacitance section includes a first variable capacitive element connected to the inductor element, and a second variable capacitive element connected in parallel to the first variable capacitive element. The first variable capacitive element changes its capacity value based on a control voltage and a first reference voltage. The second variable capacitive element changes its capacity value based on the control voltage and a second reference voltage. The first reference voltage and the second reference voltage are controlled based on the capacity value of the second variable capacitance section.

公开(公告)号：EP1527513B1

公开(公告)日：2007-08-15

申请号：EP03766565.0

申请日：2003-07-25

Applicant: NXP B.V.

Inventor： YEO, Alan, Philips Intellectual Pro. & Stand.GmbH. ,  LIM, Kui, Philips Intellectual Pro.& Stand. GmbH.

IPC: H03B5/12

CPC classification number: H03B5/1268 ,  H03B5/1206 ,  H03B5/1243 ,  H03B2201/025

Abstract: In a local oscillator for a tuning arrangement for both TV and FM signals there is substantial risk of parasitic oscillation. A special provision is disclosed for effectively reducing this risk. The special provision is a connection of a damping resistor (R1a) for suppressing parsitic oscillations between ground and a junction (J2) of a parallel LC resonator of the local oscillator.

公开(公告)号：EP1162728A4

公开(公告)日：2004-03-17

申请号：EP01900691

申请日：2001-01-12

Applicant: MATSUSHITA ELECTRIC IND CO LTD

Inventor： AKATSUKA TERUMOTO

IPC: H03B1/00 ,  H03B5/12 ,  H03B5/18 ,  H03B5/04

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).

公开(公告)号：EP1193875A1

公开(公告)日：2002-04-03

申请号：EP00402564.9

申请日：2000-09-15

Applicant: ALCATEL

Inventor： Craninckx, Jan Frans Lucien ,  Ingels, Mark Maria Albert ,  Op't Eynde, Frank Nico Lieven ,  Sevenhans, Joannes Mathilda Josephus

IPC: H03L7/099 ,  H03B5/12 ,  H03J5/24

CPC classification number: H03L7/099 ,  H03B2201/025 ,  H03J2200/10 ,  H03L7/10 ,  H03L7/105

Abstract: A voltage-controlled oscillator with automatic center frequency calibration. The frequency range (FOUT) of the oscillator is increased because of the presence of a switchable capacitor arrangement (SCA) which add or remove extra capacitors (XC1; XC2) in parallel with the variable capacitor (CV) of the resonant circuit (CV, L). Different voltage versus frequency characteristics (CHL, CHM, CHH) are so obtained. The control of the switchable capacitor arrangement is performed by a control signal provided (SC) by an oscillator control device (OCD).
The control device also sends a reset pulse (RES) to a feedback device (FB) when a control voltage (VCTRL) reaches predetermined low (VTL) or high (VTH) voltage limits of the characteristics. With this reset pulse, the control voltage is reset to an intermediate voltage (VTM) in the middle of the range between the low and the high voltage limits. By resetting the control voltage, the output frequency is also brought to an average value, i.e. is centered.
The voltage-controlled oscillator also preferably comprises a selection device (MX) adapted to immediately change the value of the control voltage to the intermediate voltage. The selection device operates faster than the feedback device.
In a preferred embodiment, memory cells are provided to store control signals corresponding to different output frequencies, i.e. channels of a mobile telecommunication system such as the GSM. The stored control signals are applied to the switchable capacitor arrangement to improve the jump to a steady state of the voltage-controlled oscillator, e.g. starting from power-down.

Abstract translation: 具有自动中心频率校准的压控振荡器。 振荡器的频率范围（FOUT）由于存在与谐振电路的可变电容器（CV）并联的额外的电容器（XC1; XC2）的可切换电容器配置（SCA）的存在而增加， L）。 如此获得不同的电压对频率特性（CHL，CHM，CHH）。 通过由振荡器控制装置（OCD）提供的控制信号（SC）来执行可切换电容器装置的控制。 当控制电压（VCTRL）达到特性的预定低（VTL）或高（VTH）电压极限时，控制装置还向反馈装置（FB）发送复位脉冲（RES）。 利用该复位脉冲，控制电压被复位到低电压极限和高电压极限范围中间的中间电压（VTM）。 通过复位控制电压，输出频率也变为平均值，即居中。 压控振荡器还优选地包括适于立即将控制电压的值改变为中间电压的选择装置（MX）。 选择装置比反馈装置运行更快。 在优选实施例中，提供存储器单元以存储对应于不同输出频率（即诸如GSM的移动电信系统的信道）的控制信号。 存储的控制信号被施加到可切换电容器装置，以改善到压控振荡器的稳定状态的跳跃，例如， 从停电开始。

公开(公告)号：WO2007005664A2

公开(公告)日：2007-01-11

申请号：PCT/US2006/025691

申请日：2006-06-29

Applicant: SILICON LABORATORIES INC. ,  DER, Lawrence ,  TAIPALE, Dana ,  WILLINGHAM, Scott, D.

Inventor： DER, Lawrence ,  TAIPALE, Dana ,  WILLINGHAM, Scott, D.

IPC: H03B5/12

CPC classification number: H03J1/00 ,  H03B2201/025 ,  H03J3/20

Abstract: In one embodiment, the present invention includes an apparatus having a first capacitor coupled between a first node and a second node, a second capacitor coupled between the second node and a reference potential, and a third capacitor coupled between the second node and a switch, where the switch is controllable to couple the third capacitor to the second node. Using such an apparatus small changes in capacitance and correspondingly small changes in frequency may be effected. Other embodiments are directed to calibration of one or more capacitor banks.

Abstract translation: 在一个实施例中，本发明包括一种装置，该装置具有耦合在第一节点和第二节点之间的第一电容器，耦合在第二节点和参考电势之间的第二电容器以及耦合在第一节点和第二节点之间的第三电容器 在第二节点和开关之间，其中开关是可控制的以将第三电容器耦合到第二节点。 使用这样的装置可以实现电容的小变化和相应的频率变化。 其他实施例涉及一个或多个电容器组的校准。

公开(公告)号：WO2004013954A1

公开(公告)日：2004-02-12

申请号：PCT/IB2003/003348

申请日：2003-07-25

Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V. ,  YEO, Alan, Chin, Leong ,  LIM, Kui, Yong

Inventor： YEO, Alan, Chin, Leong ,  LIM, Kui, Yong

IPC: H03B5/12

CPC classification number: H03B5/1268 ,  H03B5/1206 ,  H03B5/1243 ,  H03B2201/025

Abstract: In a local oscillator for a tuning arrangement for both TV and FM signals there is substantial risk of parasitic oscillation. A special provision is disclosed for effectively reducing this risk. The special provision is a connection of a damping resistor (R1a) for suppressing parsitic oscillations between ground and a junction (J2) of a parallel LC resonator of the local oscillator.

Abstract translation: 在用于TV和FM信号的调谐装置的本地振荡器中，存在寄生振荡的巨大风险。 披露了一项特别规定来有效降低风险。 特别规定是用于抑制本地振荡器的并联LC谐振器的接地和结（J2）之间的斜体振荡的阻尼电阻器（R1a）的连接。

公开(公告)号：WO2003105346A1

公开(公告)日：2003-12-18

申请号：PCT/US2003/015402

申请日：2003-06-05

Applicant: GCT SEMICONDUCTOR, INC. ,  KOO, Yido ,  LEE, Jeong-Woo ,  PARK, Joonbae ,  LEE, Kyeongho

Inventor： KOO, Yido ,  LEE, Jeong-Woo ,  PARK, Joonbae ,  LEE, Kyeongho

IPC: H03L7/08

CPC classification number: H03L7/099 ,  H03B5/1215 ,  H03B5/1228 ,  H03B5/1265 ,  H03B2201/025 ,  H03J2200/10

Abstract: A voltage-controlled oscillator (600) including an active oscillator circuit (610), an inductor, and capacitive circuits is disclosed. The capacitive circuits are selectively turned on and off to control the frequency of the voltage-controlled oscillator (600). Particularly, the inductor and the capacitors in the capacitive circuits form LC circuits that provide feedback to the active oscillator circuit (610). To avoid damage to the switches in the capacitive circuits, the capacitive circuits further comprise resistors (622). The resistors can be configured in several different ways so that the voltage-controlled oscillator (600) can have a high degree of reliability, and a wide tuning range with constant phase noise performance.

Abstract translation: 公开了一种包括有源振荡电路（610），电感器和电容电路的压控振荡器（600）。 电容电路选择性地导通和截止以控制压控振荡器（600）的频率。 特别地，电容电路中的电感器和电容器形成LC电路，向有源振荡电路（610）提供反馈。 为了避免损坏电容电路中的开关，电容电路还包括电阻（622）。 电阻器可以以几种不同的方式配置，使得压控振荡器（600）可以具有高可靠性，以及具有恒定相位噪声性能的宽调谐范围。

公开(公告)号：WO01056164A1

公开(公告)日：2001-08-02

申请号：PCT/US2001/002557

申请日：2001-01-25

IPC: H03B1/00 ,  H03B5/08 ,  H03F3/191 ,  H03J1/00 ,  H03M1/80 ,  H03M1/12

CPC classification number: H03B5/08 ,  H03B2201/0208 ,  H03B2201/025 ,  H03B2201/0266 ,  H03F3/191 ,  H03J1/0008 ,  H03J2200/10 ,  H03M1/804

Abstract: An electronically trimable capacitor (10) having a plurality of branch circuits (30) each including a capacitor (32) which may be selectively controlled by a switch (34) to contribute or not to the net capacitance exhibited by the trimable capacitor (10). Operation of the switches (34) is under direction of an interface (36), which can receive a program signal containing digital instruction for programming via a program terminal (22). An optional memory (38) permits storing a program of states for the switches (34), so that the interface (36) may be instructed to reset the switches (34) and thus cause the trimable capacitor (10) again provide a previously programmed net capacitance, say, in the event of power on or a power loss. An optional enable terminal (24) provides protection against inadvertent programming.

Abstract translation: 一种具有多个分支电路（30）的电子可调电容器（10），每个分支电路（30）均包括可由开关（34）选择性控制的电容器（32），用于对可修整电容器（10）所呈现的净电容作出贡献， 。 开关（34）的操作在接口（36）的方向上，其可以接收包含用于经由程序终端（22）编程的数字指令的程序信号。 可选择的存储器（38）允许存储用于开关（34）的状态程序，使得可以指示接口（36）复位开关（34），并且因此使可修剪电容器（10）再次提供先前编程的 净电容，例如在上电或掉电的情况下。 可选的使能端子（24）提供防止无意编程的保护。