公开(公告)号：US07518458B2

公开(公告)日：2009-04-14

申请号：US11594102

申请日：2006-11-08

Applicant: Takahiro Nakamura ,  Toru Masuda ,  Tomomitsu Kitamura ,  Norio Hayashi ,  Hiroshi Mori

Inventor： Takahiro Nakamura ,  Toru Masuda ,  Tomomitsu Kitamura ,  Norio Hayashi ,  Hiroshi Mori

IPC: H03B5/08

CPC classification number: H03J3/20 ,  H03B5/1215 ,  H03B5/1218 ,  H03B5/1228 ,  H03B5/1231 ,  H03B5/1243 ,  H03B5/1253 ,  H03B5/1265 ,  H03B5/1293 ,  H03B5/1296 ,  H03B2201/0208 ,  H03B2201/0216 ,  H03D3/007 ,  H03J2200/10

Abstract: An LC resonant circuit of an oscillator includes a parallel circuit of an inductor, a first fine adjustable capacitor and a first capacitor bank, and a series circuit of a second fine adjustable capacitor and a second capacitor bank. A frequency conversion gain of the oscillator is the sum of a frequency conversion gain of the oscillator based upon the first fine adjustable capacitor which decreases according to increase of a capacitance value of the capacitor bank and a frequency conversion gain based upon the second fine adjustable capacitor which increases according to increase of a capacitance value of the second capacitor bank. Accordingly, an LC resonant circuit for an oscillator with reduced fluctuation of a frequency conversion gain, and an oscillator and a data processing equipment using the same are provided.

Abstract translation: 振荡器的LC谐振电路包括电感器的并联电路，第一微调可调电容器和第一电容器组，以及第二精细可调电容器和第二电容器组的串联电路。 振荡器的变频增益是基于根据电容器组的电容值的增加而减小的第一微调电容器的振荡器的变频增益和基于第二微调电容器的频率转换增益的和 其根据第二电容器组的电容值的增加而增加。 因此，提供了一种用于具有降低的变频增益波动的振荡器的LC谐振电路，以及使用其的振荡器和数据处理设备。

公开(公告)号：US20080278250A1

公开(公告)日：2008-11-13

申请号：US11801716

申请日：2007-05-10

Applicant: Chih-Ming Hung ,  Nathen Barton

Inventor： Chih-Ming Hung ,  Nathen Barton

IPC: H03B7/14 ,  G06F17/50 ,  H04M1/00

CPC classification number: G06F17/5063 ,  H03B5/1215 ,  H03B5/1225 ,  H03B5/1228 ,  H03B5/1231 ,  H03B5/124 ,  H03B5/1265 ,  H03B5/1268 ,  H03B5/1296 ,  H03B2201/0216

Abstract: System and method for increasing the frequency tuning range of a RF/microwave LC oscillator. An electronic communications device includes a controller to regulate the operation of the electronic communications device, a modem coupled to the controller, a radio frequency unit coupled to the controller and to the modem, an oscillator coupled to the controller and to the radio frequency unit, and an amplifier coupled to the radio frequency unit. The oscillator produces a timing and reference signal for the radio frequency unit based on control information from the controller. The oscillator includes a multi-tap inductor that may controllably alter its effective inductance to change the timing and reference signal provided to the radio frequency unit.

Abstract translation: 用于增加RF /微波LC振荡器的频率调谐范围的系统和方法。 电子通信设备包括：控制器，用于调节电子通信设备的操作;耦合到控制器的调制解调器，耦合到控制器和调制解调器的射频单元，耦合到控制器和射频单元的振荡器， 以及耦合到射频单元的放大器。 振荡器基于来自控制器的控制信息产生用于射频单元的定时和参考信号。 振荡器包括可以可控地改变其有效电感以改变提供给射频单元的定时和参考信号的多抽头电感器。

公开(公告)号：US06861913B1

公开(公告)日：2005-03-01

申请号：US09980892

申请日：2000-04-26

Applicant: Frank Herzel ,  Peter Weger

Inventor： Frank Herzel ,  Peter Weger

IPC: H03B1/00 ,  H03B5/12 ,  H03K3/354 ,  H03L7/099 ,  H03J5/24 ,  H03B1/04

CPC classification number: H03L7/099 ,  H03B5/1215 ,  H03B5/1228 ,  H03B5/1253 ,  H03B5/1268 ,  H03B5/1293 ,  H03B2201/0216 ,  H03K3/354 ,  H03L2207/06

Abstract: A voltage-controlled oscillator device with an LC-resonant circuit, in particular for implementing integrated voltage-controlled oscillators for the lower GHz range, is disclosed. The device achieves continuous frequency tunability in a wide range in particular with a low level of phase noise and phase jitter. In the voltage-controlled oscillator, a second inductor can be periodically switched in parallel and/or in series with at least one first inductor of the LC-resonant circuit by way of a switching means actuated with the oscillator frequency. A control input of the switching means is connected to a variable dc voltage. In that respect the relationship of the duration of the conducting state and the duration of the non-conducting state of the switching means is variable within an oscillation period of the oscillator in dependence on the value of the control voltage. In accordance with the relationship of the duration of the conducting state and the duration of the non-conducting state of the switching means within an oscillation period of the oscillator the time-averaged effective inductance is variable in dependence on the value of the control voltage.

Abstract translation: 公开了具有LC谐振电路的压控振荡器装置，特别是用于实现用于较低GHz范围的集成压控振荡器。 该器件在宽范围内实现了连续的频率可调性，特别是具有低水平的相位噪声和相位抖动。 在压控振荡器中，第二电感器可以通过以振荡器频率启动的开关装置与LC谐振电路的至少一个第一电感器并联和/或串联周期性地切换。 开关装置的控制输入连接到可变直流电压。 在这方面，开关装置的导通状态的持续时间和非导通状态的持续时间之间的关系在振荡器的振荡周期内可以根据控制电压的值而变化。 根据振荡器的振荡周期内导通状态的持续时间和开关装置的非导通状态的持续时间的关系，时间平均有效电感根据控制电压的值而变化。

公开(公告)号：US06255913B1

公开(公告)日：2001-07-03

申请号：US09412462

申请日：1999-10-04

Applicant: Hongmo Wang

Inventor： Hongmo Wang

IPC: H03J524

CPC classification number: H03B5/08 ,  H03B2201/0208 ,  H03B2201/0216 ,  H03B2201/025

Abstract: A variable frequency oscillator (VFO) circuit having an increased frequency tuning range to selectively obtain operating frequencies above and below a set frequency. The circuit includes a tank inductor connected in parallel with a tank capacitor for primarily defining the set oscillating frequency of the VFO circuit. A switchable capacitor is included for selectively providing a predetermined step-wise decrease of the oscillating frequency to a frequency value below the set frequency of the circuit, and a varactor is included for accommodating selective tuning of the oscillating frequency within a range of frequency values below the set frequency. The inventive circuit selectively includes a switchable inductance element which is selectively electromagnetically coupled to the tank inductor to decrease the overall inductance value of the VFO circuit and, thereby, selectively increase the oscillating frequency above the set frequency value.

Abstract translation: 一种具有增加的频率调谐范围的可变频率振荡器（VFO）电路，以选择性地获得高于和低于设定频率的工作频率。 该电路包括与电容器并联连接的电容器，用于主要限定VFO电路的设定振荡频率。 包括可切换电容器，用于选择性地将振荡频率的预定逐步降低降低到低于电路设定频率的频率值，并且包括变容二极管，用于适应频率值范围内的振荡频率的选择性调谐 设定频率。 本发明的电路选择性地包括可切换电感元件，其可选择性地电磁耦合到电容器电感器以减小VFO电路的整体电感值，从而选择性地将振荡频率提高到设定频率值以上。

公开(公告)号：US6154102A

公开(公告)日：2000-11-28

申请号：US253857

申请日：1999-02-22

Applicant: Stephan Weber

Inventor： Stephan Weber

IPC: H03B1/00 ,  H03B5/12 ,  H03B5/08

CPC classification number: H03B5/1231 ,  H03B5/1215 ,  H03B5/1243 ,  H03B5/1296 ,  H03B2201/0208 ,  H03B2201/0216

Abstract: A controllable LC oscillator circuit has a resonant circuit including an inductance and a capacitance disposed in parallel. The oscillator is driven by an amplifier and the inductance is produced using coupled coils. The effective inductance of the coupled coils can be set by changing a gain of the amplifier, and a magnitude of the coupling factor of the coupled coils defines a magnitude of an adjustable frequency band of the oscillator.

Abstract translation: 可控LC振荡器电路具有包括并联设置的电感和电容的谐振电路。 振荡器由放大器驱动，电感由耦合线圈产生。 可以通过改变放大器的增益来设置耦合线圈的有效电感，并且耦合线圈的耦合因子的大小限定振荡器的可调节频带的幅度。

公开(公告)号：US5959516A

公开(公告)日：1999-09-28

申请号：US4679

申请日：1998-01-08

Applicant: Mau Chung F. Chang ,  Henry O. Marcy, 5.sup.th ,  Kenneth D. Pedrotti ,  David R. Pehlke ,  Charles W. Seabury ,  Jun J. Yao ,  Sangtae Park ,  J. L. Julian Tham ,  Deepak Mehrotra ,  James L. Bartlett

Inventor： Mau Chung F. Chang ,  Henry O. Marcy, 5.sup.th ,  Kenneth D. Pedrotti ,  David R. Pehlke ,  Charles W. Seabury ,  Jun J. Yao ,  Sangtae Park ,  J. L. Julian Tham ,  Deepak Mehrotra ,  James L. Bartlett

IPC: B81B3/00 ,  H03B1/00 ,  H03J3/20

CPC classification number: H03J3/20 ,  H01G5/40 ,  H03B2201/0208 ,  H03B2201/0216 ,  H03B2201/025 ,  H03J2200/10

Abstract: A high Q MEMS capacitor that can be continuously tuned with a large tuning ratio or reversibly trimmed using an electrostatic force. The tunable capacitor has a master/slave structure in which a control voltage is applied to the master (control) capacitor to set the capacitance of the slave (signal) capacitor to which an RF signal is applied via a suspended mechanical coupler. The master-slave structure reduces tuning error by reducing the signal capacitor's surface area and increasing its spring constant, and may eliminate the need for discrete blocking inductors by electrically isolating the control and signal capacitors. The trimmable capacitor provides an electrostatic actuator that selectively engages a stopper with teeth on a tunable capacitor structure to fix the trimmed capacitance.

Abstract translation: 高Q MEMS电容器，可以使用大的调谐率连续调谐或使用静电力可逆地修整。 可调谐电容器具有主/从结构，其中控制电压施加到主（控制）电容器以通过悬挂的机械耦合器设置施加RF信号的从（信号）电容器的电容。 主从结构通过减少信号电容器的表面积和增加其弹簧常数来减少调谐误差，并且可以通过电隔离控制和信号电容器来消除对离散阻塞电感器的需要。 可调节电容器提供静电致动器，其选择性地将阻塞器与可调谐电容器结构上的齿接合以固定修整的电容。

公开(公告)号：US3491311A

公开(公告)日：1970-01-20

申请号：US3491311D

申请日：1969-02-24

Applicant: PHILIPS CORP

Inventor： MEYER DIETRICH ,  SCHOTT WINFRIED

IPC: H03B1/00 ,  H03B5/20 ,  H03B5/26

CPC classification number: H03B5/26 ,  H03B5/20 ,  H03B2200/0092 ,  H03B2201/0208 ,  H03B2201/0216