公开(公告)号：US20060232350A1

公开(公告)日：2006-10-19

申请号：US11385169

申请日：2006-03-20

申请人： Masaki Yamamoto

发明人： Masaki Yamamoto

IPC分类号： H03L7/099

CPC分类号： H03B5/04 ,  H03B5/1209 ,  H03B5/1221 ,  H03B5/1231 ,  H03B5/1243

摘要： An oscillator circuit includes: oscillating transistors; a resonance circuit that includes varactor diodes each having a cathode to which a control voltage for controlling an oscillation frequency is applied and that is coupled between a collector and a base of each of the oscillating transistors; and a bias power supply that applies the bias voltages to the anodes of the varactor diodes. The bias voltages are given negative temperature characteristics, and a variation in the oscillation frequency caused by a change in the capacitance values of the varactor diodes due to a temperature variation is corrected by varying the bias voltages corresponding to the temperature variation.

摘要翻译： 振荡电路包括：振荡晶体管; 谐振电路，其包括各自具有用于控制振荡频率的控制电压的阴极并且耦合在每个所述振荡晶体管的集电极和基极之间的变容二极管; 以及将偏置电压施加到变容二极管的阳极的偏置电源。 给出偏置电压为负温度特性，并且通过改变与温度变化相对应的偏置电压来校正由于温度变化引起的变容二极管的电容值变化引起的振荡频率的变化。

公开(公告)号：US20060158260A1

公开(公告)日：2006-07-20

申请号：US10541049

申请日：2004-01-27

申请人： Nicola Da Dalt

发明人： Nicola Da Dalt

IPC分类号： H03L7/00

CPC分类号： H03K3/354 ,  H03B5/1209 ,  H03B5/1215 ,  H03B5/1221 ,  H03B5/1228 ,  H03B5/1253 ,  H03B5/1265 ,  H03B5/1271 ,  H03B2200/0048 ,  H03B2200/005 ,  H03J2200/10 ,  H03K3/0322

摘要： A method and a device are proposed for frequency synthesis by means of oscillator means, particularly a digitally controlled oscillator, which are capable of generating output frequencies out of a set of possible output frequencies. For the purpose of generating a desired frequency that is not included in the set of possible output frequencies, the oscillator means are driven by a control device in such a way that said oscillator means alternately generate at least two different output frequencies, out of the set of possible output frequencies, in such a way that the average value of the generated output frequencies over a time period is substantially the desired frequency.

摘要翻译： 提出了一种通过振荡器装置，特别是数字控制振荡器进行频率合成的方法和装置，其能够产生一组可能的输出频率的输出频率。 为了产生不包括在可能的输出频率的集合中的期望频率，振荡器装置由控制装置驱动，使得所述振荡器装置交替地产生至少两个不同的输出频率 可能的输出频率，使得在一段时间内所产生的输出频率的平均值基本上是期望的频率。

公开(公告)号：US06924708B2

公开(公告)日：2005-08-02

申请号：US10241339

申请日：2002-09-11

申请人： Yao H. Kuo ,  Sylvester P. Porambo

发明人： Yao H. Kuo ,  Sylvester P. Porambo

IPC分类号： H03B5/12 ,  H03L1/00 ,  H03L3/00 ,  H03B5/06 ,  H03B5/08

CPC分类号： H03L3/00 ,  H03B5/1209 ,  H03B5/1221 ,  H03B5/1231 ,  H03B5/124 ,  H03L1/00

摘要： An oscillator circuit having an expanded operating range includes an amplifier portion amplifying an oscillating signal. A gain controlling portion controls the gain of the amplified oscillating signal. A switching circuit electrically connected across the gain controlling portion provides a low impedance electrical path in parallel with the gain controlling portion in response to a switch input signal. The switching circuit further includes a switch signal generator portion producing the switch input signal to switch the switching circuit ON or OFF when power supplied to the oscillator circuit reaches a first predetermined voltage level and to switch the switching circuit OFF or ON when power supplied to the oscillator circuit reaches a second predetermined voltage level. In this circuit design, the initiation of an oscillating signal by the oscillator circuit is unaffected by supply voltage variation or, in other words, fluctuation in the power supplied to the oscillator circuit.

摘要翻译： 具有扩大的工作范围的振荡器电路包括放大振荡信号的放大器部分。 增益控制部分控制放大的振荡信号的增益。 电连接在增益控制部分上的开关电路响应于开关输入信号而提供与增益控制部分并联的低阻抗电路径。 开关电路还包括开关信号发生器部分，其产生开关输入信号，以在供应给振荡器电路的电力达到第一预定电压电平时将开关电路接通或断开，并且在供电至 振荡器电路达到第二预定电压电平。 在该电路设计中，由振荡电路引起的振荡信号不受电源电压变化的影响，换句话说，不会影响提供给振荡电路的功率的波动。

公开(公告)号：US06888415B2

公开(公告)日：2005-05-03

申请号：US10305749

申请日：2002-11-26

申请人： Cindra Widya Abidin ,  Georgios S. Asmanis

发明人： Cindra Widya Abidin ,  Georgios S. Asmanis

IPC分类号： H03B5/12 ,  H03B27/00

CPC分类号： H03B5/1228 ,  H03B5/1209 ,  H03B5/124

摘要： Techniques to tune a frequency of a sinusoidal signal using devices having controllable signal phase delay times. One implementation may include an input terminal to receive an input signal; a first delay path to selectively receive the input signal; a second delay path to selectively receive the input signal; and a control terminal to control an extent to which the input signal flows through the first delay path and the second delay path.

摘要翻译： 使用具有可控信号相位延迟时间的装置来调谐正弦信号的频率的技术。 一个实现可以包括用于接收输入信号的输入端; 选择性地接收输入信号的第一延迟路径; 选择性地接收输入信号的第二延迟路径; 以及控制终端，用于控制输入信号流过第一延迟路径和第二延迟路径的程度。

公开(公告)号：US06879218B2

公开(公告)日：2005-04-12

申请号：US10458750

申请日：2003-06-11

申请人： Ken Fujita

发明人： Ken Fujita

IPC分类号： H03B5/12 ,  H03C3/06 ,  H03C3/22 ,  H03L7/099 ,  H03B5/00 ,  H03C3/08

CPC分类号： H03C3/225 ,  H03B5/1209 ,  H03B5/1215 ,  H03B5/1221 ,  H03B5/1225 ,  H03B5/1228 ,  H03B5/1243 ,  H03L7/099 ,  H03L2207/06

摘要： A correction circuit for a voltage-controlled oscillator (VCO) is arranged outwardly of the voltage-controlled oscillator. The oscillation of the selected frequency and the frequency modulation are carried out independently of each other. The correction circuit includes a frequency selection controller generating a frequency selection signal of the DC potential, and a frequency modulation controller generating a modulation adjusting signal responsive to the input of a modulating signal. When a frequency modulation control signal, including the DC potential of the frequency selection signal and the modulation adjusting signal, is supplied to the voltage-controlled oscillator, the capacitance is lowered even if the frequency is increased, thus allowing the modulation degree to frequency to be decreased to a substantially constant level.

摘要翻译： 用于压控振荡器（VCO）的校正电路布置在压控振荡器的外部。 所选频率的振荡和频率调制彼此独立地进行。 校正电路包括产生DC电位的频率选择信号的频率选择控制器，以及响应于调制信号的输入产生调制调整信号的频率调制控制器。 当将包括频率选择信号和调制调整信号的直流电位的频率调制控制信号提供给压控振荡器时，即使频率增加，电容也降低，从而允许调制度频率 降低至基本恒定的水平。

公开(公告)号：US20040092244A1

公开(公告)日：2004-05-13

申请号：US10691986

申请日：2003-10-23

申请人： Research In Motion Limited

发明人： Samuel A. Tiller

IPC分类号： H04B001/26

CPC分类号： H03D7/1433 ,  H03B5/1209 ,  H03B5/1231 ,  H03D7/1441 ,  H03D7/1458 ,  H03D2200/009

摘要： A device for providing the functionality of an oscillator and mixer is disclosed herein. The device uses a differential pair to provide first and second filter networks with a time varying signal. The first filer network generates an oscillating signal through the use of a generated negative resistance and provides the oscillating signal while filtering out unwanted signals. The second filter network receives the time varying input signal and the oscillating signal and provides a mixed output while preventing the transmission of oscillations at the oscillating signal frequency. A double balanced embodiment is also disclosed.

摘要翻译： 本文公开了一种用于提供振荡器和混频器的功能的装置。 该装置使用差分对来为第一和第二滤波器网络提供时变信号。 第一个滤波器网络通过使用产生的负电阻产生振荡信号，并提供振荡信号，同时滤除不需要的信号。 第二滤波器网络接收时变输入信号和振荡信号，并提供混合输出，同时防止在振荡信号频率下的振荡传输。 还公开了双重平衡的实施例。

公开(公告)号：US20040032302A1

公开(公告)日：2004-02-19

申请号：US10219084

申请日：2002-08-14

申请人： International Business Machines Corporation

发明人： Paul P. Chominski

IPC分类号： H03B001/00

CPC分类号： H03B5/1231 ,  H03B5/1209 ,  H03B5/1243 ,  H03B5/1296 ,  H03B2201/0208

摘要： A voltage controlled oscillator, comprising a pair of transistors connected to a tank circuit, said tank circuit including a plurality of tuning diodes connected in parallel with an inductor, said tuning diodes having cathodes connected to a common connection.

摘要翻译： 一种压控振荡器，包括连接到储能电路的一对晶体管，所述振荡电路包括与电感器并联连接的多个调谐二极管，所述调谐二极管具有连接到公共连接的阴极。

公开(公告)号：US20030102498A1

公开(公告)日：2003-06-05

申请号：US10253361

申请日：2002-09-24

发明人： Glyn Braithwaite ,  Richard Hammond ,  Matthew Currie

IPC分类号： H01L029/76

CPC分类号： H01L29/7378 ,  H01L27/0617 ,  H01L27/092 ,  H01L29/1054 ,  H01L29/517 ,  H01L29/518 ,  H01L29/78654 ,  H03B5/1203 ,  H03B5/1209 ,  H03B5/1212 ,  H03B5/1215 ,  H03B5/1221 ,  H03B5/1228 ,  H03B5/1243 ,  H03K3/354 ,  H03L7/093 ,  H03L7/099

摘要： Circuits for processing radio frequency (nullRFnull) and microwave signals are fabricated using field effect transistors (nullFETsnull) that have one or more strained channel layers disposed on one or more planarized substrate layers. FETs having such a configuration exhibit improved values for, for example, transconductance and noise figure. RF circuits such as, for example, voltage controlled oscillators (nullVCOsnull), low noise amplifiers (nullLNAsnull), and phase locked loops (nullPLLsnull) built using these FETs also exhibit enhanced performance.

摘要翻译： 用于处理射频（“RF”）和微波信号的电路使用具有设置在一个或多个平坦化衬底层上的一个或多个应变沟道层的场效应晶体管（“FET”）来制造。 具有这种结构的FET对于例如跨导和噪声系数显示出改善的值。 诸如例如压控振荡器（“VCO”），使用这些FET构建的低噪声放大器（“LNA”）和锁相环（“PLL”）的RF电路也表现出增强的性能。

公开(公告)号：US6150893A

公开(公告)日：2000-11-21

申请号：US160903

申请日：1998-09-25

申请人： John W. Fattaruso

发明人： John W. Fattaruso

IPC分类号： H03K3/282 ,  H03B5/12 ,  H03B7/06

CPC分类号： H03B7/06 ,  H03B5/1209 ,  H03B5/1215 ,  H03B5/1221 ,  H03B5/1231 ,  H03B5/124 ,  H03B5/1243 ,  H03B5/1271 ,  H03B5/1296

摘要： A voltage-controlled oscillator (10), which is comprised of two subcircuits (10a, 10b). Each subcircuit (10a, 10b) has a pair of differentially connected transistors (Q1,Q2 and Q3,Q4). The first subcircuit (10a) is an LC oscillation subcircuit, in which each transistor (Q1, Q2) has a capacitive transformer (C11,C12 and C21,C22) in its feedback loop. The second subcircuit (10b) is a current-controlled variable-capacitance subcircuit, whose feedback loop has a gain that determines the effective capacitance of the subcircuit (10b). When the subcircuits (10a, 10b) are combined, the feedback loops on each side of the differential pairs (Q1,Q2 and Q3,Q4) share the capacitive transformer (C11,C12 and C21,C22). The result is that the effective capacitance determines the oscillation frequency for the oscillator (10).

摘要翻译： 一个由两个子电路（10a，10b）组成的压控振荡器（10）。 每个子电路（10a，10b）具有一对差分连接的晶体管（Q1，Q2和Q3，Q4）。 第一分支电路（10a）是LC振荡分支电路，其中每个晶体管（Q1，Q2）在其反馈回路中具有电容变压器（C11，C12和C21，C22）。 第二分支电路（10b）是电流控制的可变电容子电路，其反馈回路具有确定子电路（10b）的有效电容的增益。 当子电路（10a，10b）组合时，差分对（Q1，Q2和Q3，Q4）的每一侧的反馈回路共享电容变压器（C11，C12和C21，C22）。 结果是有效电容决定了振荡器（10）的振荡频率。

公开(公告)号：US6140884A

公开(公告)日：2000-10-31

申请号：US277488

申请日：1999-03-26

申请人： Simon Lewis Harpham ,  John Coulson James

发明人： Simon Lewis Harpham ,  John Coulson James

IPC分类号： H03B1/04 ,  H03B5/12 ,  H03B5/00

CPC分类号： H03B5/1231 ,  H03B5/1209 ,  H03B5/1243 ,  H03B5/1296 ,  H03B2200/0034 ,  H03B2202/05 ,  H03B2202/07

摘要： An integrated circuit (shown below dashed line A--A) for a voltage controlled oscillator comprises a first transistor (T.sub.1) having its collector coupled to a first port (Port 1) via a filter comprising a capacitor (C.sub.f) and an inductor (L.sub.f) and its emitter coupled to the emitter of a second transistor (T.sub.2) whose collector is coupled to a second port (Port 2). The collector of the first transistor is also coupled via a capacitive divider (C.sub.1, C.sub.2) to the base of the second transistor. The base of the first transistor is AC decoupled (C.sub.3). The emitters of the first and second transistors are fed by a current source (I.sub.1). A capacitor (C.sub.s) connects the base of the second transistor to the first port. The first and second ports are for connection to an external resonator (L.sub.1, D.sub.1, C.sub.p, L.sub.p) (shown above dashed line A--A) where C.sub.p and L.sub.p are parasitic capacitances and inductances respectively, the latter being typically bond wires connecting the ports to the rest of the external resonator. The filter (C.sub.f, L.sub.f) causes the circuit to exhibit negative impedance across the first and second ports. A VCO embodying the invention is tunable across the intended frequency range without exhibiting frequency hopping or mode switching.

摘要翻译： 用于压控振荡器的集成电路（如虚线AA所示）包括通过包括电容器（Cf）和电感器（Lf）的滤波器将其集电极耦合到第一端口（端口1）的第一晶体管（T1）和 其发射极耦合到第二晶体管（T2）的发射极，第二晶体管的集电极耦合到第二端口（端口2）。 第一晶体管的集电极还经由电容分压器（C1，C2）耦合到第二晶体管的基极。 第一晶体管的基极为AC去耦（C3）。 第一和第二晶体管的发射极由电流源（I1）馈送。 电容器（Cs）将第二晶体管的基极连接到第一端口。 第一和第二端口用于连接到外部谐振器（L1，D1，Cp，Lp）（如虚线AA所示），其中Cp和Lp分别是寄生电容和电感，后者通常是将端口连接到 其余的外部谐振器。 滤波器（Cf，Lf）使电路在第一和第二端口上呈现负阻抗。 体现本发明的VCO可以在预期的频率范围内是可调谐的，而不会出现跳频或模式切换。