公开(公告)号：US09473151B1

公开(公告)日：2016-10-18

申请号：US14731487

申请日：2015-06-05

Applicant: Telefonaktiebolaget L M Ericsson (publ)

Inventor： Christian Elgaard ,  Lars Sundström

IPC: H03L5/00

CPC classification number: H03L5/00 ,  H03B5/1278 ,  H03B2201/031

Abstract: A frequency generation solution controls an oscillator amplitude using two feedback paths to generate high frequency signals with lower power consumption and lower noise. A first feedback path provides continuous control of the oscillator amplitude responsive to an amplitude detected at the oscillator output. A second feedback path provides discrete control of the amplitude regulating parameter(s) of the oscillator responsive to the detected oscillator amplitude. Because the second feedback path enables the adjustment of the amplitude regulating parameter(s), the second feedback path enables an amplifier in the first feedback path to operate at a reduced gain, and thus also at a reduced power and a reduced noise, without jeopardizing the performance of the oscillator.

Abstract translation: 频率发生解决方案使用两个反馈路径控制振荡器振幅，以产生具有较低功耗和较低噪声的高频信号。 响应于在振荡器输出处检测到的振幅，第一反馈路径提供对振荡器振幅的连续控制。 响应于检测到的振荡器振幅，第二反馈路径提供对振荡器的幅度调节参数的离散控制。 因为第二反馈路径使得能够调整幅度调节参数，所以第二反馈路径使得第一反馈路径中的放大器能够以减小的增益进行操作，并且因此也以降低的功率和降低的噪声工作，而不会危及 振荡器的性能。

公开(公告)号：US09325277B1

公开(公告)日：2016-04-26

申请号：US14571805

申请日：2014-12-16

Applicant: Xilinx, Inc.

Inventor： Adebabay M. Bekele ,  Parag Upadhyaya

IPC: H03B5/12

CPC classification number: H03B5/1253 ,  H03B5/1215 ,  H03B5/1228 ,  H03B5/1243 ,  H03B5/1265 ,  H03B5/1271 ,  H03B5/1278 ,  H03B5/129 ,  H03B2201/0208 ,  H03B2201/0266 ,  H03B2201/0291 ,  H03B2201/031 ,  H03B2201/038

Abstract: Voltage-controlled oscillation is described. In an apparatus therefor, an inductor has a tap and has or is coupled to a positive-side output node and a negative side output node. The tap is coupled to receive a first current. A coarse grain capacitor array is coupled to the positive-side output node and the negative side output node and is coupled to respectively receive select signals. A varactor is coupled to the positive-side output node and the negative side output node and is coupled to receive a control voltage. The varactor includes MuGFETs. A transconductance cell is coupled to the positive-side output node and the negative side output node, and the transconductance cell has a common node. A frequency scaled resistor network is coupled to the common node and is coupled to receive the select signals for a resistance for a path for a second current.

Abstract translation: 描述了压控振荡。 在其装置中，电感器具有抽头并且具有或耦合到正侧输出节点和负侧输出节点。 抽头被耦合以接收第一电流。 粗粒电容器阵列耦合到正侧输出节点和负侧输出节点，并被耦合以分别接收选择信号。 变容二极管耦合到正侧输出节点和负侧输出节点，并耦合以接收控制电压。 变异反应器包括MuGFETs。 跨导单元耦合到正侧输出节点和负侧输出节点，并且跨导单元具有公共节点。 频率比例电阻网络耦合到公共节点，并被耦合以接收用于第二电流的路径的电阻的选择信号。

公开(公告)号：US20150365050A1

公开(公告)日：2015-12-17

申请号：US14740444

申请日：2015-06-16

Applicant: Seiko Epson Corporation

Inventor： Atsushi KIYOHARA ,  Masayuki ISHIKAWA ,  Yosuke ITASAKA

IPC: H03B5/36

CPC classification number: H03B5/368 ,  H03B5/04 ,  H03B5/362 ,  H03B2201/031 ,  H03L1/00

Abstract: An oscillation circuit includes a circuit for oscillation and a signal adjustment circuit connected to the circuit for oscillation. An input voltage based on a direct-current voltage, a voltage value of which can be changed, is input to the circuit for oscillation and the signal adjustment circuit. The circuit for oscillation causes a vibration piece to oscillate and outputs a first oscillation signal. A frequency of the first oscillation signal is adjusted according to the voltage value output from the signal adjustment circuit.

Abstract translation: 振荡电路包括用于振荡的电路和连接到振荡电路的信号调节电路。 基于直流电压（其电压值可以改变）的输入电压被输入到用于振荡的电路和信号调节电路。 振荡电路使振动片振荡并输出第一振荡信号。 第一振荡信号的频率根据从信号调整电路输出的电压值进行调整。

公开(公告)号：US20120092080A1

公开(公告)日：2012-04-19

申请号：US13379679

申请日：2010-12-21

Applicant: Kenji Nemoto ,  Tamami Furuya

Inventor： Kenji Nemoto ,  Tamami Furuya

IPC: H03B5/36

CPC classification number: H03B5/362 ,  H03B5/04 ,  H03B5/364 ,  H03B5/366 ,  H03B2201/031

Abstract: Provided is a temperature compensated oscillator includes an oscillation circuit for oscillating an oscillator. In the oscillator, when an oscillation frequency is changed by a second control signal after being controlled by a first control signal, variation in the oscillation frequency due to a second control signal is set to a fixed amount. The oscillation frequency of the oscillator is controlled on the basis of both the first control signal and the second control signal, but an oscillation amplitude adjusting section is also added, the oscillation amplitude adjusting section allowing the oscillation amplitude of the oscillator to be changed by the second control signal. The oscillator thus allows a fixed amount of oscillation frequency control over a wide range (full range) of oscillation frequency control due to the first control signal.

Abstract translation: 提供一种温度补偿振荡器，其包括用于振荡振荡器的振荡电路。 在振荡器中，当在被第一控制信号控制之后振荡频率被第二控制信号改变时，由于第二控制信号引起的振荡频率的变化被设定为固定量。 基于第一控制信号和第二控制信号来控制振荡器的振荡频率，但也增加了振荡幅度调整部分，振荡器振幅调整部分使振荡器的振荡幅度由 第二控制信号。 因此，振荡器由于第一控制信号而允许在宽范围（全范围）振荡频率控制下的固定量的振荡频率控制。

公开(公告)号：US08159308B1

公开(公告)日：2012-04-17

申请号：US12763027

申请日：2010-04-19

Applicant: Sehat Sutardja

Inventor： Sehat Sutardja

IPC: H03B5/18

CPC classification number: H03B5/1228 ,  H03B5/1212 ,  H03B5/1215 ,  H03B5/1278 ,  H03B5/129 ,  H03B2200/0062 ,  H03B2201/031 ,  H03B2201/038 ,  H03L5/00

Abstract: An apparatus includes a tank circuit of a voltage controlled oscillator (VCO). A pair of alternating current (AC) coupling capacitors couple the gates of the pair of transistors to the drains of the pair of transistors. A bias circuit is coupled to the gates of the pair of transistors to bias the pair of transistors such that the pair of transistors alternatingly turn on during a plurality of peaks of an oscillating signal of the tank circuit and the pair of transistors turn off during a plurality of crossing points of the oscillating signal. A feedback loop may be configured to detect a peak oscillating amplitude of the oscillating signal and adjust a bias voltage of the bias circuit. Also, a supply capacitor may be coupled to the tank circuit and to the pair of transistors to provide an instantaneous current to the VCO.

Abstract translation: 一种装置包括压控振荡器（VCO）的振荡电路。 一对交流（AC）耦合电容器将该对晶体管的栅极耦合到该对晶体管的漏极。 偏置电路耦合到该对晶体管的栅极，以偏置该对晶体管，使得该对晶体管在该多个峰值期间在该振荡电路的振荡信号的峰值期间交替导通，并且一对晶体管在一 多个交叉点的振荡信号。 反馈回路可以被配置为检测振荡信号的峰值振荡幅度并调整偏置电路的偏置电压。 此外，电源电容器可以耦合到储能电路和一对晶体管，以向VCO提供瞬时电流。

公开(公告)号：US07190232B1

公开(公告)日：2007-03-13

申请号：US10747521

申请日：2003-12-29

Applicant: Swee-Ann Teo

Inventor： Swee-Ann Teo

IPC: H03B5/12

CPC classification number: H03L5/00 ,  H03B5/1215 ,  H03B5/1231 ,  H03B5/1243 ,  H03B2200/0062 ,  H03B2201/031 ,  H03B2201/033 ,  H03L7/099

Abstract: A voltage-controlled oscillator (VCO) circuit includes first, second, third, and fourth transistors, each with a first terminal, a second terminal, and a control terminal. The first terminal of the first transistor communicates with the first terminal of the second transistor. The control terminals of the third and fourth transistors communicate with the second terminals of the first and second transistors, respectively. The first terminals of the third and fourth transistors communicate with the control terminals of the first and second transistors, respectively. First ends of first and second capacitances communicate with the second terminals of the first and second transistors, respectively. Second ends of the first and second capacitances communicate with the control terminals of the first and second transistors, respectively.

Abstract translation: 压控振荡器（VCO）电路包括第一，第二，第三和第四晶体管，每个具有第一端子，第二端子和控制端子。 第一晶体管的第一端与第二晶体管的第一端连通。 第三和第四晶体管的控制端分别与第一和第二晶体管的第二端相连。 第三和第四晶体管的第一端子分别与第一和第二晶体管的控制端子通信。 第一和第二电容的第一端分别与第一和第二晶体管的第二端子通信。 第一和第二电容的第二端分别与第一和第二晶体管的控制端相通。

公开(公告)号：US5708394A

公开(公告)日：1998-01-13

申请号：US671300

申请日：1996-07-01

Applicant: Richard K. Karlquist

Inventor： Richard K. Karlquist

IPC: H03L7/00 ,  H03B1/00 ,  H03B5/38 ,  H03L5/00 ,  H03L7/02 ,  H03B5/32

CPC classification number: H03L5/00 ,  H03B5/38 ,  H03L7/02 ,  H03B2201/0208 ,  H03B2201/031

Abstract: An apparatus and method are disclosed for improving the stability of the frequency of vibration of an oscillator signal produced by an oscillator circuit. In a preferred embodiment of the present invention, a quartz crystal resonator is one arm of a bridge which generates a bridge signal which varies in accordance with the vibrating frequency of the resonator. A synchronous demodulator responds to the bridge signal for producing an error signal which is converted into a control signal. A control circuit receives the control signal and changes its reactance when the resonator is no longer vibrating at its unperturbed resonance frequency so that the vibration frequency of the resonator connected to the control circuit is returned to its resonant frequency. An automatic level control circuit is also included for controlling the drive level of the signal exciting the resonator.

Abstract translation: 公开了一种用于改善由振荡器电路产生的振荡器信号的振动频率的稳定性的装置和方法。 在本发明的优选实施例中，石英晶体谐振器是桥的一个臂，其产生根据谐振器的振动频率而变化的桥接信号。 同步解调器响应于桥信号以产生被转换成控制信号的误差信号。 当谐振器在其未扰动的谐振频率下不再振动时，控制电路接收控制信号并改变其电抗，使得连接到控制电路的谐振器的振动频率返回到其谐振频率。 还包括用于控制激励谐振器的信号的驱动电平的自动电平控制电路。

公开(公告)号：US5406237A

公开(公告)日：1995-04-11

申请号：US185628

申请日：1994-01-24

Applicant: Richard J. Ravas ,  Harvey C. Nathanson ,  Marvin Cohn ,  Edward C. Niehenke

Inventor： Richard J. Ravas ,  Harvey C. Nathanson ,  Marvin Cohn ,  Edward C. Niehenke

IPC: H03B1/00 ,  H03B19/05 ,  H03B19/18 ,  H01P1/20

CPC classification number: H03B19/18 ,  H03B19/05 ,  H03B2201/031

Abstract: The invention provides frequency multiplier circuitry which may be used in the output section of high power microwave systems to efficiently provide higher output frequencies. Generally, one multiplier stage may be utilized to double the frequency of the input signal with several stages being cascaded to achieve even higher frequencies. The varactor diodes utilized in circuits of the invention are preferably constructed primarily of silicon carbide, which has many advantages when compared with current varactors constructed of GaAs or silicon. Some presently preferred embodiments utilize a four terminal varactor bridge instead of a single varactor diode. The invention also teaches several significant techniques for improving the bandwidth of the circuitry, thus allowing variation of the frequency of the input signal without significantly attenuating the output signal.

Abstract translation: 本发明提供了可以在大功率微波系统的输出部分中使用的倍增器电路，以有效地提供更高的输出频率。 通常，可以利用一个乘法器级将输入信号的频率加倍，并且级数级数达到甚至更高的频率。 在本发明的电路中使用的变容二极管优选主要由碳化硅构成，与由GaAs或硅构成的电流变容二极管相比，其具有许多优点。 一些目前优选的实施例利用四端变容二极管代替单个变容二极管。 本发明还教导了用于改善电路带宽的若干重要技术，从而允许输入信号的频率变化而不会显着衰减输出信号。

公开(公告)号：US3855550A

公开(公告)日：1974-12-17

申请号：US39141773

申请日：1973-08-24

Applicant: RCA CORP

Inventor： CARLSON D

IPC: H03B5/04 ,  H03B1/00 ,  H03B5/18 ,  H03B3/02 ,  H03B5/12

CPC classification number: H03B5/1805 ,  H03B2201/031 ,  H03B2201/038

Abstract: A voltage-dependent capacitor tuned oscillator employs a diode as a coupling element between an amplifying device and a resonant circuit to provide a feedback signal to the amplifying device required to sustain oscillations. The diode further provides charging current for a capacitor in the resonant circuit when a first polarity portion of the oscillations increase above a predetermined level. The charge on the capacitor decreases the feedback level, thus stabilizing the level of oscillations in the resonant circuit for each frequency to which the oscillator is tuned.

Abstract translation: 电压相关的电容调谐振荡器使用二极管作为放大器件和谐振电路之间的耦合元件，以向保持振荡所需的放大器件提供反馈信号。 当振荡的第一极性部分增加到高于预定电平时，二极管进一步向谐振电路中的电容器提供充电电流。 电容器上的电荷会降低反馈电平，从而稳定振荡器调谐的每个频率的谐振电路中的振荡电平。

公开(公告)号：US3195071A

公开(公告)日：1965-07-13

申请号：US4926060

申请日：1960-08-12

Applicant: RCA CORP

Inventor： REYNOLD STEINHOFF

IPC: H03B1/00 ,  H03B7/08 ,  H03B7/14

CPC classification number: H03B7/14 ,  H03B7/08 ,  H03B2201/015 ,  H03B2201/031