公开(公告)号：US5872489A

公开(公告)日：1999-02-16

申请号：US848137

申请日：1997-04-28

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

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

IPC: B81C3/00 ,  H01H59/00 ,  H01L27/06 ,  H03B1/00 ,  H03B5/12 ,  H03F1/26 ,  H03F1/56 ,  H03B5/08 ,  H03F3/04 ,  H03J5/24

CPC classification number: H03F1/565 ,  H01L27/0611 ,  H03B5/1256 ,  H03F1/26 ,  H03F3/195 ,  H01H59/0009 ,  H03B2201/012 ,  H03B2201/0208 ,  H03B2201/0216 ,  H03B2201/025 ,  H03F2200/294 ,  H03F2200/372 ,  H03J2200/10 ,  H03J2200/15

Abstract: An integrated, tunable inductance network features a number of fixed inductors fabricated on a common substrate along with a switching network made up of a number of micro-electromechanical (MEM) switches. The switches selectably interconnect the inductors to form an inductance network having a particular inductance value, which can be set with a high degree of precision when the inductors are configured appropriately. The preferred MEM switches introduce a very small amount of resistance, and the inductance network can thus have a high Q. The MEM switches and inductors can be integrated using common processing steps, reducing parasitic capacitance problems associated with wire bonds and prior art switches, increasing reliability, and reducing the space, weight and power requirements of prior art designs. The precisely tunable high-Q inductance network has wide applicability, such as in a resonant circuit which provides a narrow bandwidth frequency response which peaks at a specific predetermined frequency, making possible a highly selective performance low noise amplifier (LNA), or in an oscillator circuit so that a precise frequency of oscillation can be generated and changed as needed.

Abstract translation: 集成的可调电感网络具有在由公共基板上制造的多个固定电感器以及由多个微机电（MEM）开关组成的开关网络。 开关可选地互连电感器以形成具有特定电感值的电感网络，当电感器被适当地配置时，可以以高精度设置电感网络。 优选的MEM开关引入非常少量的电阻，因此电感网络可以具有高Q.MEM开关和电感器可以使用常规的处理步骤进行集成，减少与引线键合和现有技术开关相关联的寄生电容问题，增加 可靠性，并减少现有技术设计的空间，重量和功率要求。 精确可调谐的高Q电感网络具有广泛的适用性，例如在谐振电路中，其提供以特定预定频率峰值的窄带宽频率响应，使高选择性性能低噪声放大器（LNA）或振荡器 使得可以根据需要产生和改变振荡的精确频率。

公开(公告)号：US5629652A

公开(公告)日：1997-05-13

申请号：US647395

申请日：1996-05-09

Applicant: Frederick G. Weiss

Inventor： Frederick G. Weiss

IPC: H03B1/00 ,  H03B5/12 ,  H03B5/18 ,  H03B27/00 ,  H03K3/282 ,  H03B5/00 ,  H03B5/20

CPC classification number: H03K3/2823 ,  H03B5/1215 ,  H03B5/1231 ,  H03B5/1243 ,  H03B5/1265 ,  H03B2200/004 ,  H03B2200/0048 ,  H03B2200/0062 ,  H03B2200/0098 ,  H03B2201/025 ,  H03B27/00 ,  H03B5/18

Abstract: Both differential and single-ended band-switchable VCOs are described. The single-ended version of the voltage controlled oscillator in its most basic form includes a load, two transistors, two delay elements, and a switchable current source. The first transistor includes a collector, an emitter and a base coupled to the load to form an output terminal for providing an oscillator output signal. The first delay element is connected between the collector and the base of the first transistor. The second transistor includes a collector, an emitter and a base connected to the base of the first transistor. The second delay element is connected between the collector of the first transistor and the collector of the second transistor. The switchable current source is connected to the emitters of the first and second transistors to provided a current to one of the transistors responsive to a control signal wherein the oscillator output signal has a first frequency of oscillation that is inversely proportional to the delay of the first transistor when the first transistor is turned on and a second frequency of oscillation inversely proportional to the sum of the first and second delay element delays when the second transistor is turned on.

Abstract translation: 描述差分和单端带可切换VCO。 其最基本形式的压控振荡器的单端版本包括负载，两个晶体管，两个延迟元件和可切换电流源。 第一晶体管包括集电极，发射极和耦合到负载的基极，以形成用于提供振荡器输出信号的输出端。 第一延迟元件连接在第一晶体管的集电极和基极之间。 第二晶体管包括集电极，发射极和连接到第一晶体管的基极的基极。 第二延迟元件连接在第一晶体管的集电极和第二晶体管的集电极之间。 可切换电流源连接到第一和第二晶体管的发射极，以响应于控制信号向一个晶体管提供电流，其中振荡器输出信号具有与第一和第二晶体管的延迟成反比的第一振荡频率 当第二晶体管导通时，第一晶体管导通，以及与第一和第二延迟元件的和的和成反比的第二振荡频率。

公开(公告)号：US3889210A

公开(公告)日：1975-06-10

申请号：US40092373

申请日：1973-09-26

Applicant: HITACHI LTD

Inventor： MATSUURA SHIGEO ,  SAITOH TAKESHI ,  MIYAMOTO HIROSHI

IPC: H03B1/00 ,  H03B5/12 ,  H04B1/26 ,  H04N5/44 ,  H03B3/02

CPC classification number: H03B5/1231 ,  H03B5/1203 ,  H03B5/1243 ,  H03B2200/004 ,  H03B2200/0048 ,  H03B2201/025 ,  H03B2201/031

Abstract: The proposed local oscillation circuit comprises a resonance circuit including a variable capacitance diode to change the resonance frequency and tuning coils for low and high frequency bands, an oscillating transistor connected with the resonance circuit, changeover means for switching the tuning coils between the low and the high frequency bands, biasing means for providing a bias voltage for the oscillating transistor, and means for changing over a collector current of the transistor by changing the bias voltage applied by the biasing means to the transistor, in response to the operation of the tuning coil change-over means. The local oscillation circuit is well adapted to be used in a tuner of a receiver which receives a wide range of frequencies, e.g. a VHF television tuner.

Abstract translation: 所提出的本地振荡电路包括谐振电路，其包括用于改变谐振频率的可变电容二极管和用于低频和高频带的调谐线圈，与谐振电路连接的振荡晶体管，用于将调谐线圈切换到低频和低频之间的转换装置 高频带，用于为振荡晶体管提供偏置电压的偏置装置，以及用于响应于调谐线圈的操作而改变由偏置装置施加到晶体管的偏置电压来改变晶体管的集电极电流的装置 转换手段 本地振荡电路非常适合用于接收宽范围频率的接收机的调谐器，例如， 甚高频电视调谐器。

公开(公告)号：US20180109246A1

公开(公告)日：2018-04-19

申请号：US15783930

申请日：2017-10-13

Applicant: Ricardo Zaplana

Inventor： Ricardo Zaplana

IPC: H03K5/1252 ,  H03K3/84 ,  H03K3/017 ,  H03K5/24 ,  H03B5/12

CPC classification number: H03K5/1252 ,  H02J5/005 ,  H02J7/025 ,  H02J50/12 ,  H02M3/33523 ,  H02M3/33569 ,  H03B5/1265 ,  H03B2200/004 ,  H03B2201/025 ,  H03K3/017 ,  H03K3/84 ,  H04B5/0075 ,  Y02B70/1433

Abstract: It is often desirable to transmit data between circuits or components operating at a relatively high voltage and circuits operating at a relatively low voltage. Such a task can be performed by use of an isolator. Some isolator designs use magnetic coupling to transfer the data as this is more robust against inadvertently transmitting high voltage transients than capacitor based isolators. However it is often desirable to encode the data for exchange across the transformer of the isolator and decode after transmission across the transformer. This requires power for the encoding and decoding circuits. To ensure both sides are powered, power may be transferred by another transformer. The transformer primary is driven by an oscillating signal. The system disclosed in some embodiments herein varies the frequency of the oscillating signal to mitigate the risk of it interfering with other circuits or systems associated with the isolator.

公开(公告)号：US20180097521A1

公开(公告)日：2018-04-05

申请号：US15676080

申请日：2017-08-14

Applicant: Apple Inc.

Inventor： Joachim S. Hammerschmidt ,  Robert G. Lorenz

IPC: H03L7/089 ,  H03C3/09 ,  H03L7/099 ,  H03L7/10 ,  H03L7/18

CPC classification number: H03L7/0893 ,  H03B5/1243 ,  H03B5/1265 ,  H03B2201/025 ,  H03B2201/0266 ,  H03C3/0925 ,  H03C3/0933 ,  H03C3/095 ,  H03C3/0958 ,  H03C3/0991 ,  H03J2200/10 ,  H03L7/0805 ,  H03L7/0996 ,  H03L7/104 ,  H03L7/105 ,  H03L7/18 ,  H03L7/189 ,  H03L2207/06

Abstract: A method and apparatus for performing a two-point calibration of a VCO in a PLL is disclosed. The method includes determining a first steady state tuning voltage of the VCO with no modulation voltage applied. Thereafter, an iterative process may be performed wherein a modulation voltage is applied to the VCO (along with the tuning voltage) and a modified divisor is applied to the divider circuit in the feedback loop. During each iteration, after the PLL is settled, the tuning voltage is measured and a difference between the current value and the first value is determined. If the current and first values of the turning voltage are not equal, another iteration may be performed, modifying at least one of the modulation voltage and the divisor, and determining the difference between the current and first values of the tuning voltage.

公开(公告)号：US09543927B2

公开(公告)日：2017-01-10

申请号：US14942826

申请日：2015-11-16

Applicant: Taiwan Semiconductor Manufacturing Company, Ltd.

Inventor： Chewn-Pu Jou ,  Feng Wei Kuo

IPC: H03J5/02 ,  H03B5/12 ,  H03J5/24 ,  H03B5/08 ,  H03H5/12

CPC classification number: H03J5/0218 ,  H03B5/08 ,  H03B5/1215 ,  H03B5/1228 ,  H03B5/1265 ,  H03B2201/025 ,  H03H5/12 ,  H03J5/246 ,  H03J2200/10

Abstract: A device comprises a first capacitor block comprising a plurality of first capacitors connected in a first configuration, a second capacitor block comprising a plurality of second capacitors connected in the first configuration, a third capacitor block comprising a plurality of third capacitors connected in a second configuration, a fourth capacitor block comprising a plurality of fourth capacitors connected in the second configuration, a first switch connected between the first capacitor block and the second capacitor block, a second switch connected between the third capacitor block and the fourth capacitor block, a third switch connected between the first capacitor block and the fourth capacitor block and a fourth switch connected between the third capacitor block and the second capacitor block.

Abstract translation: 一种器件包括：第一电容器块，包括以第一配置连接的多个第一电容器;第二电容器块，包括以第一配置连接的多个第二电容器;第三电容器块，包括以第二配置连接的多个第三电容器 第四电容器块，包括以第二配置连接的多个第四电容器，连接在第一电容器块和第二电容器块之间的第一开关，连接在第三电容器块和第四电容器块之间的第二开关，第三开关 连接在第一电容器块和第四电容器块之间，第四开关连接在第三电容器块和第二电容器块之间。

公开(公告)号：US09350321B2

公开(公告)日：2016-05-24

申请号：US13212762

申请日：2011-08-18

Applicant: Hajime Shibata

Inventor： Hajime Shibata

IPC: H03B5/12 ,  H03C3/09 ,  H03H11/24 ,  H03B5/00

CPC classification number: H03H11/245 ,  H03B5/00 ,  H03B2201/011 ,  H03B2201/018 ,  H03B2201/0208 ,  H03B2201/025

Abstract: A tunable impedance circuit can include a fixed impedance and one or more impedance selection circuits. Each impedance selection circuit can include a first impedance connected to a first interface terminal, a second impedance connected to a second interface terminal, and a plurality of series-connected transistors connected between the first and second impedances. Each impedance selection circuit can also include a plurality of drive impedance networks connected to gates, sources, drains, bodies, and isolation regions of the series-connected transistors, and a control circuit to provide a plurality of control signals to the drive impedance networks to turn on and turn off the series-connected transistors. For each impedance selection circuit, turning on and turning off the respective plurality of series-connected transistors can bring the series combination of the respective first and second impedances into and out of electrical communication with, e.g., into and out of parallel with, the fixed impedance.

Abstract translation: 可调谐阻抗电路可以包括固定阻抗和一个或多个阻抗选择电路。 每个阻抗选择电路可以包括连接到第一接口端子的第一阻抗，连接到第二接口端子的第二阻抗以及连接在第一和第二阻抗之间的多个串联连接的晶体管。 每个阻抗选择电路还可以包括连接到串联连接晶体管的栅极，源极，漏极，主体和隔离区域的多个驱动阻抗网络，以及控制电路，以向驱动阻抗网络提供多个控制信号 打开并关闭串联晶体管。 对于每个阻抗选择电路，导通和关断相应的多个串联晶体管可以使相应的第一和第二阻抗的串联组合进入和流出与例如固定的 阻抗。

公开(公告)号：US20160087584A1

公开(公告)日：2016-03-24

申请号：US14858291

申请日：2015-09-18

Applicant: Seiko Epson Corporation

Inventor： Yoshiaki MATSUMOTO

IPC: H03B5/36 ,  H03B5/12

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：US09214897B2

公开(公告)日：2015-12-15

申请号：US14453979

申请日：2014-08-07

Applicant: Seiko Epson Corporation

Inventor： Tsuyoshi Yoneyama

IPC: H03B5/04 ,  H03B5/30 ,  H03L1/02 ,  H03B5/36

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

Abstract: An oscillation circuit includes a temperature compensating section to which electric power is supplied from a main power supply and a backup power supply, an oscillating section, a function of which is compensated by a signal from the temperature compensating section, and a switch and a power-supply monitoring circuit configured to select, when the temperature compensating section is not operating, at least one of the main power supply and the backup power supply and control connection to the temperature compensating section.

Abstract translation: 振荡电路包括从主电源和备用电源供给电力的温度补偿部，其功能由来自温度补偿部的信号补偿的振荡部，以及开关和功率 所述供电监视电路被配置为当所述温度补偿部不工作时，选择所述主电源和所述备用电源和所述温度补偿部的控制连接中的至少一个。

公开(公告)号：US09190985B2

公开(公告)日：2015-11-17

申请号：US14497009

申请日：2014-09-25

Applicant: Taiwan Semiconductor Manufacturing Company, Ltd.

Inventor： Chewn-Pu Jou ,  Feng Wei Kuo

IPC: H03J5/24 ,  H03B5/12 ,  H03H5/12

CPC classification number: H03J5/0218 ,  H03B5/08 ,  H03B5/1215 ,  H03B5/1228 ,  H03B5/1265 ,  H03B2201/025 ,  H03H5/12 ,  H03J5/246 ,  H03J2200/10

Abstract: A device comprises a first variable capacitance block comprising four first capacitors, a second variable capacitance block comprising four second capacitors, wherein the second capacitors are arranged in a same configuration as the first capacitors, a third variable capacitance block comprising four third capacitors, a fourth variable capacitance block comprising four fourth capacitors, and wherein the fourth capacitors are arranged in a same configuration as the third capacitors, a first switch coupled between the first variable capacitance block and the second variable capacitance block, a second switch coupled between the third variable capacitance block and the fourth variable capacitance block, a third switch coupled between the first variable capacitance block and the fourth variable capacitance block and a fourth switch coupled between the third variable capacitance block and the second variable capacitance block.

Abstract translation: 一种装置包括：包括四个第一电容器的第一可变电容块，包括四个第二电容器的第二可变电容块，其中所述第二电容器以与所述第一电容器相同的配置布置;第三可变电容块，包括四个第三电容器，第四电容块 可变电容块包括四个第四电容器，并且其中第四电容器以与第三电容器相同的配置布置，耦合在第一可变电容块和第二可变电容块之间的第一开关，耦合在第三可变电容 块和第四可变电容块，耦合在第一可变电容块和第四可变电容块之间的第三开关和耦合在第三可变电容块和第二可变电容块之间的第四开关。