公开(公告)号：US20170063305A1

公开(公告)日：2017-03-02

申请号：US15245670

申请日：2016-08-24

申请人： Seiko Epson Corporation

发明人： Toru SHIROTORI ,  Hisashi YAMAGUCHI ,  Masaki WAKAMORI ,  Toshiya USUDA ,  Masayuki KAMIYAMA ,  Sho MATSUZAKI ,  Hiroshi KIYA ,  Tsuyoshi YONEYAMA

IPC分类号： H03B5/32

CPC分类号： H03B5/32 ,  H03B5/04 ,  H03B5/1234 ,  H03B5/1265 ,  H03L1/02 ,  H03L1/026 ,  H03L1/04

摘要： An oscillation circuit includes an oscillating circuit adapted to oscillate a resonator element, a capacitance circuit connected to the oscillating circuit, and capable of correcting an oscillation frequency of the oscillating circuit, a logic circuit to which a signal output from the oscillating circuit is input, and which is capable of correcting a frequency of the signal, and a control circuit adapted to control an operation of the capacitance circuit and an operation of the logic circuit.

摘要翻译： 振荡电路包括：振荡电路，用于振荡谐振元件，连接到振荡电路的电容电路，并能够校正振荡电路的振荡频率;输入从振荡电路输出的信号的逻辑电路; 并且其能够校正信号的频率，以及适于控制电容电路的操作和逻辑电路的操作的控制电路。

公开(公告)号：US09413292B2

公开(公告)日：2016-08-09

申请号：US13527477

申请日：2012-06-19

申请人： William C. Athas ,  Catherine S. Chou

发明人： William C. Athas ,  Catherine S. Chou

IPC分类号： H03B5/12

CPC分类号： H03B5/1234 ,  H03B5/1212 ,  H03B5/1228

摘要： The disclosed embodiments provide a resonant oscillator circuit. The resonant oscillator circuit includes a clipping mechanism configured to clip an output voltage of a signal pulse generated by the resonant oscillator circuit to a predefined constant level. The resonant oscillator circuit also includes a feedback path configured to return energy from the clipping mechanism to an input of the resonant oscillator circuit.

摘要翻译： 所公开的实施例提供了一种谐振振荡器电路。 谐振振荡器电路包括限幅机构，其构造成将由共振振荡器电路产生的信号脉冲的输出电压钳位到预定的恒定电平。 谐振振荡器电路还包括被配置为将能量从限幅机构返回到谐振振荡器电路的输入的反馈路径。

公开(公告)号：US08274339B2

公开(公告)日：2012-09-25

申请号：US12770230

申请日：2010-04-29

申请人： Yongping Fan ,  Jing Li ,  Ian A. Young

发明人： Yongping Fan ,  Jing Li ,  Ian A. Young

IPC分类号： H03L1/02 ,  H03L7/085

CPC分类号： H03L1/02 ,  H03B5/1215 ,  H03B5/1228 ,  H03B5/1234 ,  H03B5/124 ,  H03B5/1265 ,  H03J2200/10 ,  H03L7/099 ,  H03L7/103 ,  H03L7/18

摘要： A mixed signal circuit architecture is disclosed for automatic frequency control and digital temperature compensation in an LC-PLL system. Some embodiments allow for high-volume manufacturing of products such as microprocessors and chipsets, and other circuits that employ LC-PLL technology. In some embodiments, various capacitor loadings can be selected to compensate for variation associated with process, voltage, temperature, and reference frequency. In addition, a multi-leg capacitor bank can be selectively used to further compensate for temperature variation post-lock, in accordance with some embodiments. A programmable timer can be used in some embodiments to allow for loop settling prior to assessing parameters of interest.

摘要翻译： 公开了用于LC-PLL系统中的自动频率控制和数字温度补偿的混合信号电路架构。 一些实施例允许诸如微处理器和芯片组的产品的大量制造以及采用LC-PLL技术的其它电路。 在一些实施例中，可以选择各种电容器负载以补偿与过程，电压，温度和参考频率相关联的变化。 此外，根据一些实施例，可以选择性地使用多支脚电容器组来进一步补偿温度变化后锁定。 在一些实施例中可以使用可编程定时器，以便在评估感兴趣的参数之前允许循环结算。

公开(公告)号：US20120119942A1

公开(公告)日：2012-05-17

申请号：US13243693

申请日：2011-09-23

申请人： Laurence Moquillon ,  Patrice Garcia

发明人： Laurence Moquillon ,  Patrice Garcia

IPC分类号： G01S13/34

CPC分类号： G01S13/32 ,  G01S7/35 ,  H03B5/1215 ,  H03B5/1218 ,  H03B5/1231 ,  H03B5/1234 ,  H03B5/1243 ,  H03B2200/0008 ,  H03B2200/0066 ,  H03B2202/044 ,  H03B2202/076

摘要： Device for transmitting/receiving frequency modulated type radar waves that includes: a circuit for generating radar waves which includes a voltage-controlled oscillator coupled to a circulator which is itself connected to a transmit/receive antenna; a detection circuit including a first mixer which is fed by the circulator and the voltage-controlled oscillator, wherein voltage-controlled oscillator incluing an input for injecting a signal generated by an additional circuit, the additional circuit having its input fed by the output signal of voltage-controlled oscillator and including a second mixer which is fed by two signals generated on the basis of the output signal of voltage-controlled oscillator.

摘要翻译： 用于发射/接收频率调制型雷达波的装置，包括：用于产生雷达波的电路，该电路包括耦合到本来连接到发射/接收天线的环行器的压控振荡器; 检测电路，包括由循环器和压控振荡器馈送的第一混频器，其中压控振荡器包括用于注入由附加电路产生的信号的输入，所述附加电路具有由输出信号 压控振荡器，并且包括由基于压控振荡器的输出信号产生的两个信号馈送的第二混频器。

公开(公告)号：US5801592A

公开(公告)日：1998-09-01

申请号：US858611

申请日：1997-05-21

申请人： Wolfgang Mann ,  Horst Schaefer

发明人： Wolfgang Mann ,  Horst Schaefer

IPC分类号： H03C3/22 ,  H03B5/12 ,  H03L5/00

CPC分类号： H03C3/222 ,  H03B5/1203 ,  H03B5/1231 ,  H03B5/1234

摘要： An oscillator circuit is provided for stabilizing the amplitude of a HF oscillation of an audio signal. In such an oscillator circuit, an audio signal having a frequency in the range of 20 Hz . . . 20 kHz is coupled into the oscillator circuit, is modulated with a high frequency and is emitted in the form of an RF audio signal having a frequency of more than 2 MHz. Such an oscillator circuit is used for instance in an infrared transmitting unit, wherein a low frequency audio signal is transformed into a higher frequency infrared signal. The higher frequency audio signals are transmitted via infrared channel to an appropriate receiving unit--for instance to infrared head phones--which comprises a receiving unit having an appropriate demodulator and preferably also a stereo-decoder in order to reproduce the low frequency audio signals. The oscillator for stabilizing the amplitude of a high frequency oscillation comprises a resonant circuit which is coupled with a first transistor having a base terminal, an emitter contact, and a collector contact. The first transistor develops an output voltage at the emitter contact which is fed back into a base circuit of the first transistor. The collector contact of the first transistor is coupled to a supply voltage source. The supply voltage source is coupled to the base terminal of the first transistor via a resistor. The emitter contact of the first transistor is coupled with the base terminal of a second transistor. The second transistor has a collector contact which is connected to the base terminal of the first transistor for controlling the voltage at the base terminal of the first transistor.

摘要翻译： 提供振荡器电路以稳定音频信号的HF振荡的幅度。 在这种振荡器电路中，具有频率在20Hz范围内的音频信号。 。 。 20kHz被耦合到振荡器电路中，以高频调制，并且以具有大于2MHz的频率的RF音频信号的形式发射。 这种振荡电路例如用在红外发射单元中，其中低频音频信号被变换成较高频率的红外信号。 较高频率的音频信号通过红外线通道传输到适当的接收单元，例如红外头戴式电话，其包括具有适当的解调器的接收单元，并且优选地也是立体声解码器，以便再现低频音频信号。 用于稳定高频振荡幅度的振荡器包括谐振电路，其与具有基极端子，发射极触点和集电极触点的第一晶体管耦合。 第一晶体管在发射极接触处产生一个反馈到第一晶体管的基极电路中的输出电压。 第一晶体管的集电极触点耦合到电源电压源。 电源电压源通过电阻耦合到第一晶体管的基极端子。 第一晶体管的发射极接触与第二晶体管的基极耦合。 第二晶体管具有集电极触点，其连接到第一晶体管的基极端子，用于控制第一晶体管的基极端子处的电压。

公开(公告)号：US2942206A

公开(公告)日：1960-06-21

申请号：US72253958

申请日：1958-03-19

申请人： GEN ELECTRIC CO LTD

发明人： GEORGE MURRAY

IPC分类号： H03B5/12 ,  H03K3/26

CPC分类号： H03K3/26 ,  H03B5/1203 ,  H03B5/1231 ,  H03B5/1234 ,  H03B5/1296

公开(公告)号：US20180351528A1

公开(公告)日：2018-12-06

申请号：US15703756

申请日：2017-09-13

申请人： QUALCOMM Incorporated

发明人： Gang LIU ,  Jeremy DUNWORTH

IPC分类号： H03H7/01 ,  H03B5/12 ,  H03H3/00

CPC分类号： H03H7/0115 ,  H01F17/0006 ,  H01F2017/0073 ,  H01F2017/0086 ,  H03B5/1203 ,  H03B5/1212 ,  H03B5/1228 ,  H03B5/1234 ,  H03B5/1243 ,  H03B2200/009 ,  H03H3/00

摘要： A planar differential inductor reduces an effect of parasitics on common mode inductance of a voltage controlled oscillator (VCO)-based inductor to properly ground a common mode alternating current (AC) ground. In one instance, the planar differential inductor includes a ground plane, routing lines, distributed capacitors, an exterior inductor structure, and an interior inductor structure. The planar differential inductor may be coupled to a capacitor as part of an LC tank that operates as a resonator within a VCO. The bypass capacitor array is coupled between the ground plane and the routing lines. The exterior inductor structure is coupled between the routing lines and a power supply. The interior inductor is within the ground plane and coupled between the routing lines and differential ports.

公开(公告)号：US10008981B2

公开(公告)日：2018-06-26

申请号：US15096612

申请日：2016-04-12

申请人： Silicon Laboratories Inc.

发明人： Aaron J. Caffee ,  Brian G. Drost ,  Hendricus de Ruijter

IPC分类号： H03B5/08 ,  H03B5/12 ,  H03L1/00 ,  H03B5/36 ,  H03L1/02 ,  H03L7/02 ,  H03L7/087 ,  H03L7/095 ,  H03L7/22 ,  H03L7/23 ,  H03L7/183 ,  H03L7/197

CPC分类号： H03B5/1234 ,  H03B5/12 ,  H03B5/1265 ,  H03B5/36 ,  H03L1/00 ,  H03L1/026 ,  H03L7/02 ,  H03L7/087 ,  H03L7/095 ,  H03L7/183 ,  H03L7/1976 ,  H03L7/22 ,  H03L7/23

摘要： An integrated clock generator includes a tunable LC oscillator, a tunable frequency synthesizer, and a processor. The tunable LC oscillator has an input for receiving an oscillator control signal, and an output for providing an oscillator clock signal. The tunable frequency synthesizer has a clock input coupled to the output of the tunable LC oscillator, a control input for receiving a synthesizer control signal, and an output for providing a clock output signal. The processor has an input for receiving a data input signal, a first output for providing the oscillator control signal, and a second output for providing the synthesizer control signal. The processor provides the oscillator control signal and the synthesizer control signal such that the tunable frequency synthesizer generates the output clock signal at a frequency indicated by the data input signal, and provides the synthesizer control signal further in response to a dynamic condition.

公开(公告)号：US20180152138A1

公开(公告)日：2018-05-31

申请号：US15469625

申请日：2017-03-27

申请人： SANKEN ELECTRIC CO., LTD.

发明人： Junichi SUGITA ,  Masaru NAKAMURA

IPC分类号： H03B5/12

CPC分类号： H03B5/1228 ,  H03B5/1234 ,  H03B5/124 ,  H03B5/26

摘要： One or more embodiments of current source circuits may include: a first current source that generates a first current dependent on a threshold value of a MOSFET; a second current source that generates a second current dependent on a voltage in a forward direction of a p-n junction; a first resistor that produces a first voltage based on the first current and the second current; a second resistor that produces a second voltage based on the second current; and an output MOSFET that produces an output current based on a sum of the first voltage and the second voltage.

公开(公告)号：US20170353157A1

公开(公告)日：2017-12-07

申请号：US15173044

申请日：2016-06-03

申请人： Texas Instruments Incorporated

发明人： Subhashish Mukherjee ,  Kumar Anurag Shrivastava ,  Madhulatha Bonu

IPC分类号： H03B5/04 ,  H03B5/06 ,  H03B5/12 ,  H03L7/00

CPC分类号： H03B5/06 ,  H03B5/04 ,  H03B5/1221 ,  H03B5/1234 ,  H03L3/00 ,  H03L7/00

摘要： Methods and apparatus are disclosed to generate an oscillating output signal having a voltage swing greater than a voltage swing across nodes of active devices. An example oscillator includes a tank to generate an oscillating output signal in response receiving an edge of an enable signal; a feedback generator including a first gain stage forming a first feedback loop with the tank, the first feedback loop providing a first charge to maintain the oscillating output signal and a second gain stage forming a second feedback loop with the tank, the second feedback loop providing a second charge to maintain the oscillating output signal, the first and second charges combining with the oscillating output signal to generate a high voltage swing; and an attenuator connected between the tank and the feedback generator to isolate the tank from active components of the feedback generator.