公开(公告)号：US09503020B2

公开(公告)日：2016-11-22

申请号：US14858291

申请日：2015-09-18

Applicant: Seiko Epson Corporation

Inventor： Yoshiaki Matsumoto

IPC: H03B5/36

CPC classification number: H03B5/368 ,  H03B2200/0026 ,  H03B2201/025

Abstract: An oscillator includes a first VCXO and a second VCXO which are capable of changing an output frequency by application of a control voltage, and a control voltage terminal to which the control voltage is applied, the first VCXO includes a variable-capacitance diode (first variable-capacitance diode) and a resistor (first resistor), the second VCXO includes a variable-capacitance diode (second variable-capacitance diode) and a resistor (second resistor), the cutoff frequency of the first variable-capacitance diode, the second variable-capacitance diode, the first resistor, and the second resistor is equal to the cutoff frequency of the first variable-capacitance diode and the first resistor, and the cutoff frequency of the second variable-capacitance diode and the second resistor.

Abstract translation: 振荡器包括能够通过施加控制电压来改变输出频率的第一VCXO和第二VCXO以及施加控制电压的控制电压端子，第一VCXO包括可变电容二极管（第一变量 电容二极管）和电阻器（第一电阻器），第二VCXO包括可变电容二极管（第二可变电容二极管）和电阻器（第二电阻器），第一可变电容二极管的截止频率，第二变量 电容二极管，第一电阻器和第二电阻器等于第一可变电容二极管和第一电阻器的截止频率以及第二可变电容二极管和第二电阻器的截止频率。

公开(公告)号：US20150263702A1

公开(公告)日：2015-09-17

申请号：US14728689

申请日：2015-06-02

Applicant: Taiwan Semiconductor Manufacturing Company, Ltd.

Inventor： Chewn-Pu Jou ,  Ying-Ta Lu ,  Hsien-Yuan Liao

IPC: H03J5/24 ,  H03L7/08 ,  H01G4/38

CPC classification number: H03J5/246 ,  H01G4/38 ,  H03B5/1215 ,  H03B5/1228 ,  H03B5/1265 ,  H03B2201/025 ,  H03H5/12 ,  H03H7/00 ,  H03J2200/10 ,  H03L7/08

Abstract: An electronic device includes an inductive element, and variable capacitors. Each variable capacitor includes: first and third capacitors, both having a first terminal electrically connected to a first terminal of the inductive element; and second and fourth capacitors, both having a first terminal electrically connected to a second terminal of the inductive element. A first switch circuit electrically connects or isolates a second terminal of the first capacitor to/from a second terminal of the second capacitor. A second switch circuit electrically connects or isolates a second terminal of the third capacitor to/from a second terminal of the fourth capacitor. A third switch circuit electrically connects or isolates the second terminal of the first capacitor to/from the second terminal of the fourth capacitor. A fourth switch circuit electrically connects or isolates the second terminal of the third capacitor to/from the second terminal of the second capacitor.

Abstract translation: 电子设备包括电感元件和可变电容器。 每个可变电容器包括：第一和第三电容器，两者具有电连接到电感元件的第一端子的第一端子; 以及第二和第四电容器，它们都具有电连接到电感元件的第二端子的第一端子。 第一开关电路将第一电容器的第二端子与第二电容器的第二端子电连接或隔离。 第二开关电路将第三电容器的第二端子与第四电容器的第二端子电连接或隔离。 第三开关电路将第一电容器的第二端子与第四电容器的第二端子电连接或隔离。 第四开关电路将第三电容器的第二端子与第二电容器的第二端子电连接或隔离。

公开(公告)号：US08204451B1

公开(公告)日：2012-06-19

申请号：US12182232

申请日：2008-07-30

Applicant: Alireza Kheirkhahi ,  Hirad Samavati ,  Srenik Mehta ,  David Su ,  Brian Kaczynski

Inventor： Alireza Kheirkhahi ,  Hirad Samavati ,  Srenik Mehta ,  David Su ,  Brian Kaczynski

IPC: H04B1/40

CPC classification number: H03L7/099 ,  H03B5/1212 ,  H03B5/1228 ,  H03B5/1253 ,  H03B5/1265 ,  H03B2201/025 ,  H03J2200/10

Abstract: A transceiver for use in a wireless device. The transceiver may include a receive portion for receiving an input RF signal. The receive portion may include at least one receive filter which may include a first filter. The transceiver may also include a transmit portion for transmitting an output RF signal. The transmit portion may include at least one transmit filter, which may include the first filter used in the receive portion. The transceiver may further include a plurality of switches, which may include a first switch coupled to an input of the first filter and a second switch coupled to an output of the first filter. The plurality of switches may be configurable to enable use of the first filter in the receive portion for receiving the input RF signal and use of the first filter in the transmit portion for transmitting the output RF signal.

Abstract translation: 用于无线设备的收发器。 收发器可以包括用于接收输入RF信号的接收部分。 接收部分可以包括可以包括第一滤波器的至少一个接收滤波器。 收发器还可以包括用于发送输出RF信号的发送部分。 发射部分可以包括至少一个发射滤波器，其可以包括在接收部分中使用的第一滤波器。 收发器还可以包括多个开关，其可以包括耦合到第一滤波器的输入的第一开关和耦合到第一滤波器的输出的第二开关。 多个开关可以被配置为使得能够使用接收部分中的第一滤波器来接收输入RF信号，并且在发送部分中使用第一滤波器来发送输出RF信号。

公开(公告)号：US08102218B2

公开(公告)日：2012-01-24

申请号：US12275608

申请日：2008-11-21

Applicant: Yun-seong Eo ,  Hee-mun Bang ,  Kwang-du Lee ,  Heung-bae Lee

Inventor： Yun-seong Eo ,  Hee-mun Bang ,  Kwang-du Lee ,  Heung-bae Lee

IPC: H03B5/12

CPC classification number: H01F21/12 ,  H03B5/1203 ,  H03B5/1218 ,  H03B5/1228 ,  H03B5/1268 ,  H03B2200/0048 ,  H03B2201/0216 ,  H03B2201/025 ,  H03J5/244 ,  H03J2200/15

Abstract: An inductor circuit includes a pair of inductors connected in parallel with each other and a switch for turning on and off electric power to one of the pair of inductors. The inductance of the inductor circuit can be varied and the quality factor Q can be improved. Further, RF circuits employing the inductor circuit can generate an intended operating frequency.

Abstract translation: 电感器电路包括彼此并联连接的一对电感器和用于将电力接通和断开到该对电感器之一的开关。 可以改变电感电路的电感，提高品质因数Q。 此外，采用电感电路的RF电路可以产生预期的工作频率。

公开(公告)号：US07948325B2

公开(公告)日：2011-05-24

申请号：US12259770

申请日：2008-10-28

Applicant: Ramon A. Gomez

Inventor： Ramon A. Gomez

IPC: H03L7/00

CPC classification number: H03L7/00 ,  H03B5/1212 ,  H03B5/1215 ,  H03B5/1228 ,  H03B5/1243 ,  H03B5/1253 ,  H03B5/1265 ,  H03B5/1278 ,  H03B2200/0046 ,  H03B2200/0048 ,  H03B2200/005 ,  H03B2201/02 ,  H03B2201/0208 ,  H03B2201/025 ,  H03D7/165 ,  H03D7/18 ,  H03J5/244 ,  H03J2200/10 ,  H03L7/0898 ,  H03L7/093 ,  H03L7/099 ,  H03L7/10 ,  H03L7/107 ,  H03L7/1072 ,  H03L7/18

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 includes a parallel LC circuit 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包括具有多个固定电容器的并联LC电路，其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于参考频率，环路带宽和环路阻尼等特定PLL特性的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。

公开(公告)号：US07791423B2

公开(公告)日：2010-09-07

申请号：US11645382

申请日：2006-12-26

Applicant: Makoto Watanabe

Inventor： Makoto Watanabe

IPC: H03B5/32

CPC classification number: H03B5/36 ,  H03B2200/0048 ,  H03B2201/025

Abstract: The present invention relates to a two-frequency switchover type crystal oscillator in which first and second IC chips and first and second crystal resonators are connected to wiring patterns of a circuit substrate to form first and second oscillation circuits, and the first and second oscillation circuits are selectively operated in accordance with a selection mechanism; a two-frequency switchover type crystal oscillator in which surfaces opposite to circuit function surfaces of the first and second IC chips are connected to form a two-stage structure; IC terminals of the circuit function surface of the first IC chip are directly connected both electrically and mechanically to the wiring patterns; and IC terminals of the circuit function surface of the second IC chip are connected electrically by wire bonding to the wiring patterns; wherein those wiring patterns of the wiring patterns that are connected to power source, output, and ground terminals of the first and second IC chips are connected in common with respect to the first and second oscillation circuits. This configuration reduces the mounting surface area of the first and second IC chips, facilitating the wiring patterns thereof, thus making it possible to provide a two-frequency switchover oscillator in which the surface area of the external plan view is reduced.

Abstract translation: 本发明涉及一种双频切换型晶体振荡器，其中第一和第二IC芯片和第一和第二晶体谐振器连接到电路基板的布线图案以形成第一和第二振荡电路，第一和第二振荡电路 根据选择机构选择性地操作; 其中与第一和第二IC芯片的电路功能表面相对的表面连接以形成两级结构的双频切换型晶体振荡器; 第一IC芯片的电路功能表面的IC端子电连接和机械地直接连接到布线图案; 并且第二IC芯片的电路功能表面的IC端子通过引线接合电连接到布线图案; 其中连接到第一和第二IC芯片的电源，输出和接地端子的布线图形的那些布线图案相对于第一和第二振荡电路共同连接。 这种结构减小了第一和第二IC芯片的安装表面积，便于其布线图案，从而可以提供其中外部平面图的表面积减小的双频切换振荡器。

公开(公告)号：US07656245B2

公开(公告)日：2010-02-02

申请号：US12036185

申请日：2008-02-22

Applicant: Michael Shannon McCorquodale ,  Scott Michael Pernia ,  Sundus Kubba ,  Justin O'Day ,  Gordon Carichner

Inventor： Michael Shannon McCorquodale ,  Scott Michael Pernia ,  Sundus Kubba ,  Justin O'Day ,  Gordon Carichner

IPC: H03B5/12

CPC classification number: G06F1/04 ,  G06F1/08 ,  H03B5/06 ,  H03B5/1203 ,  H03B5/1215 ,  H03B5/1218 ,  H03B5/1228 ,  H03B5/1253 ,  H03B5/1256 ,  H03B5/1265 ,  H03B2201/025 ,  H03J1/0008 ,  H03J2200/10 ,  H03L1/022 ,  H03L3/00 ,  H03L7/08 ,  H03L7/0812 ,  H03L7/0891 ,  H03L7/099

Abstract: In various embodiments, the invention provides a clock generator and/or a timing and frequency reference using an LC-oscillator topology, having a frequency controller to control and provide a stable resonant frequency, which is integrated with other, second circuitry such as a processor or controller. Frequency stability is provided over variations in a selected parameter such as temperature and fabrication process variations. The various apparatus embodiments include a sensor adapted to provide a signal in response to at least one parameter of a plurality of parameters; and a frequency controller adapted to modify the resonant frequency in response to the second signal. In exemplary embodiments, the sensor is implemented as a current source responsive to temperature fluctuations, and the frequency controller is implemented as a plurality of controlled reactance modules which are selectively couplable to the resonator or to one or more control voltages. The controlled reactance modules may include fixed or variable capacitances or inductances, and may be binary weighted. Arrays of resistive modules are also provided, to generate one or more control voltages.

Abstract translation: 在各种实施例中，本发明提供使用LC振荡器拓扑的时钟发生器和/或定时和频率参考，其具有频率控制器以控制和提供稳定的谐振频率，其与其它第二电路（例如处理器 或控制器。 提供了频率稳定性，如选择的参数（如温度和制造工艺变化）的变化。 各种装置实施例包括适于响应于多个参数的至少一个参数提供信号的传感器; 以及频率控制器，其适于响应于所述第二信号来修改所述谐振频率。 在示例性实施例中，响应于温度波动将传感器实现为电流源，并且频率控制器被实现为可选择地耦合到谐振器或一个或多个控制电压的多个受控电抗模块。 受控电抗模块可以包括固定或可变电容或电感，并且可以是二进制加权的。 还提供了电阻模块的阵列，以产生一个或多个控制电压。

公开(公告)号：US07652544B2

公开(公告)日：2010-01-26

申请号：US11885859

申请日：2006-01-26

Applicant: Kenichi Hosoya ,  Shigeki Wada

Inventor： Kenichi Hosoya ,  Shigeki Wada

IPC: H03B5/12

CPC classification number: H03B5/1231 ,  H03B5/1212 ,  H03B5/1215 ,  H03B5/124 ,  H03B5/1265 ,  H03B5/1293 ,  H03B2201/025 ,  H03J2200/10

Abstract: A voltage controlled oscillator of the present invention includes power supply terminal (101), control terminal (2) for controlling an output frequency, output terminals (3a, 3b), cross-coupled transistors (5a, 5b), capacitances (6a, 6b, 7a, 7b), LC tanks (10a, 10b), resistor (117), grounding capacitance (18) and center frequency control circuit (16). Center frequency control circuit (16) includes resistors (11a, 11b), grounding capacitance (12), center frequency control terminal (4) for controlling a center frequency of the output frequency, and voltage-divider circuit (15). Resistors (11a, 11b) are connected to the base terminals of cross-coupled transistors (5a, 5b), the other ends of resistors (11a, 11b) are connected to each other, and, to this connecting point, one end of grounding capacitance (12) and one end of voltage-divider circuit (15) are connected. The other end of voltage-divider circuit (15) is connected to center frequency control terminal (4).

Abstract translation: 本发明的压控振荡器包括电源端子（101），用于控制输出频率的控制端子（2），输出端子（3a，3b），交叉耦合晶体管（5a，5b），电容（6a，6b） ，7a，7b），LC箱（10a，10b），电阻器（117），接地电容（18）和中心频率控制电路（16）。 中心频率控制电路（16）包括用于控制输出频率的中心频率的电阻器（11a，11b），接地电容（12），中心频率控制端子（4）和分压电路（15）。 电阻器（11a，11b）连接到交叉耦合晶体管（5a，5b）的基极端子，电阻器（11a，11b）的另一端彼此连接，并且在该连接点的一端 电容（12）和分压电路（15）的一端连接。 分压器电路（15）的另一端连接到中心频率控制端子（4）。

公开(公告)号：US20090273404A1

公开(公告)日：2009-11-05

申请号：US12432743

申请日：2009-04-29

Applicant: Robert Hay

Inventor： Robert Hay

IPC: H03H9/00 ,  H01L41/08

CPC classification number: H03B5/326 ,  H03B2201/025 ,  H03B2201/0291 ,  H03B2201/031 ,  H03H9/6403

Abstract: A frequency adjustable surface acoustic wave oscillator uses circuitry in which the phase relationship between the corresponding input and output signals and the voltage applied to or received by transducer fingers is controlled in such a manner that the frequency of the surface acoustic wave oscillator is arbitrarily controlled over a wide range by digital means. This provides an oscillator that exhibits a wide tunable frequency range while providing low phase noise.

Abstract translation: 频率可调声表面波振荡器使用电路，其中相应的输入和输出信号之间的相位关系以及施加到或由换能器指状态接收的电压被控制为使声表面波振荡器的频率被任意控制 数字化的广泛范围。 这提供了一个振荡器，具有宽的可调谐频率范围，同时提供低相位噪声。

公开(公告)号：US20090243743A1

公开(公告)日：2009-10-01

申请号：US12059826

申请日：2008-03-31

Applicant: Marcel A. Kossel ,  Thomas E. Morf ,  Jonas R. Weiss

Inventor： Marcel A. Kossel ,  Thomas E. Morf ,  Jonas R. Weiss

IPC: H03B5/12

CPC classification number: H03B5/1228 ,  H03B5/1215 ,  H03B5/1253 ,  H03B5/1265 ,  H03B2201/0208 ,  H03B2201/025

Abstract: A system and apparatus for varactor bank switching for a voltage controlled oscillator, is disclosed. Varactor bank switching involves partitioning a varactor bank switch into two anti-parallel branches, wherein each branch comprises a pass-gate circuit that is series-connected to a fixed varactor or capacitor; and maintaining an output common mode voltage of an actual oscillator signal at the varactor-side terminal of each pass-gate circuit, such that a threshold voltage of the switch transistor in the pass-gate circuit is not exceeded and the switch remains in an off-state.

Abstract translation: 公开了一种用于压控振荡器的变容二极管开关的系统和装置。 变容二极管开关包括将变容二极管开关分成两个反并联支路，其中每个支路包括串联连接到固定变容二极管或电容器的通栅电路; 并且在每个通过栅极电路的变容二极管端保持实际振荡器信号的输出共模电压，使得不超过通路栅极电路中的开关晶体管的阈值电压，并且开关保持断开 -州。