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：US5130675A

公开(公告)日：1992-07-14

申请号：US754826

申请日：1991-09-04

申请人： Hideo Sugawara

发明人： Hideo Sugawara

IPC分类号： H03L7/099 ,  H03B1/00 ,  H03B1/04 ,  H03B5/18

CPC分类号： H03B5/1876 ,  H03B2200/0024 ,  H03B2200/004 ,  H03B2200/0062 ,  H03B2201/0208 ,  H03B2202/027 ,  H03B2202/076 ,  H03B5/1852

摘要： A voltage-controlled oscillator according to the present invention comprises: a transistor, where the drain electrode is grounded, the gate electrode is connected to a resonator whose resonant frequency is adjustable according to a voltage applied to a voltage-dependent capacitance diode electromagnetically coupled with the resonator, an output signal is output from the source electrode; a resistor connected in gate bias circuit or source voltage supply circuit for detecting a low-frequency noise component generated in the transistor, where the detected low-frequency noise component is amplified and fed back to the voltage-dependent capacitance diode so as to cancel a phase-noise component generated in the voltage-controlled oscillator. The above-described voltage-controlled oscillator may be further provided with a reference crystal oscillator to which the voltage-controlled oscillator is phase-locked. Thus, a microwave voltage-controlled oscillator excellent in phase-noise characteristics of the oscillated frequency is accomplished though there is employed a GaAs FET which is not good in a low-frequency noise characteristic.

公开(公告)号：US4555678A

公开(公告)日：1985-11-26

申请号：US554012

申请日：1983-11-21

申请人： Zvi Galani ,  Richard W. Laton ,  Raymond C. Waterman, Jr. ,  Robert DiBiase

发明人： Zvi Galani ,  Richard W. Laton ,  Raymond C. Waterman, Jr. ,  Robert DiBiase

IPC分类号： H03B1/04 ,  H03B5/18 ,  H03B5/22

CPC分类号： H03B5/1894 ,  H03B2200/0088 ,  H03B2202/076

摘要： An improvement in a microwave oscillator using a GaAs FET as the active element is shown to include a phase detector responsive to a portion of the positive feedback signals applied to a resonator having a high Q and to a portion of the signals out of the GaAs FET, shifted by 90.degree., to obtain signals to degenerate noise internally formed in the GaAs FET.

摘要翻译： 使用GaAs FET作为有源元件的微波振荡器的改进被示为包括相位检测器，该相位检测器响应于施加到具有高Q的谐振器的一部分的正反馈信号和来自GaAs FET的信号的一部分 ，偏移90°，以获得GaAs FET内部形成的退化噪声信号。

公开(公告)号：US07528672B2

公开(公告)日：2009-05-05

申请号：US10952491

申请日：2004-09-28

申请人： Franz Darrer ,  Jürgen Fehle

发明人： Franz Darrer ,  Jürgen Fehle

IPC分类号： H03B5/36

CPC分类号： H03B5/362 ,  H03B1/04 ,  H03B2202/04 ,  H03B2202/076

摘要： An oscillator arrangement having a resonator and a drive circuit which is connected to a connecting terminal of the oscillator is disclosed. In one embodiment, the oscillator includes a current source circuit is connected between a terminal for a first supply potential and the connecting terminal of the resonator and supplies the connecting terminal with a current source current which varies periodically at an oscillator frequency. A current sink circuit is connected between the connecting terminal of the resonator and a second supply potential, where the current sink circuit draws a current sink current from the connecting terminal, said current sink current varying periodically at the oscillator frequency and being negatively fed back to the current source current.

摘要翻译： 公开了一种具有谐振器和连接到振荡器的连接端的驱动电路的振荡器装置。 在一个实施例中，振荡器包括电流源电路连接在用于第一电源电位的端子和谐振器的连接端子之间，并以连续的方式向连接端子提供以振荡器频率周期性变化的电流源电流。 电流吸收电路连接在谐振器的连接端子和第二电源电位之间，其中电流吸收电路从连接端子吸取电流吸收电流，所述电流吸收电流以振荡器频率周期性地变化并被负反馈回 电流源电流。

公开(公告)号：US5920235A

公开(公告)日：1999-07-06

申请号：US882577

申请日：1997-06-25

申请人： Ronald Douglas Beards ,  Samuel Alfred Tiller

发明人： Ronald Douglas Beards ,  Samuel Alfred Tiller

IPC分类号： H03B1/04 ,  H03B5/12 ,  H03B7/00

CPC分类号： H03B5/1231 ,  H03B5/1215 ,  H03B5/1243 ,  H03B2202/04 ,  H03B2202/073 ,  H03B2202/076

摘要： A voltage controlled oscillator has a cross-coupled negative resistance cell formed as an integrated circuit connected to off-chip components of a high-Q resonant tank circuit. To counteract spurious oscillations brought about by package parasitics caused by the interconnection of the chip to the external components, the cell is provided with a degeneration impedance. Typically, a pure inductor is used if all the elements of the tank circuit are off-chip. In a case where the tank circuit includes an on-chip fixed capacitor, the degeneration impedance may take the form of a capacitor.

摘要翻译： 压控振荡器具有交叉耦合负电阻单元，其形成为连接到高Q谐振回路的芯片外部件的集成电路。 为了抵消由芯片与外部组件的互连引起的封装寄生效应引起的寄生振荡，电池被提供了退化阻抗。 通常，如果储能电路的所有元件都是芯片外的，则使用纯电感。 在储能电路包括片上固定电容器的情况下，退化阻抗可以采取电容器的形式。

公开(公告)号：US5568096A

公开(公告)日：1996-10-22

申请号：US424079

申请日：1995-04-19

申请人： Jacobus Haartsen

发明人： Jacobus Haartsen

IPC分类号： H03B1/04 ,  H03L7/02 ,  H03C3/00

CPC分类号： H03B1/04 ,  H03L7/02 ,  H03B2202/076

摘要： An apparatus and method are provided for increasing the effective Q-value of an oscillator so that the required Q-value can be reached with the use of a low Q-value oscillator. In this apparatus and method, the FM noise is measured at the output of the oscillator by an FM detector and the output of the FM detector is fed back to the control input of the oscillator. By using this negative FM feedback, frequency variations in the oscillator output are suppressed by applying a correction signal at the control input of the oscillator. The amount of suppression depends on the loop gain of the FM feedback loop and the amount of suppression is proportional to the loop gain so that the effective Q-value of the oscillator is proportional to the loop gain. As a result of correcting the FM noise measured at the oscillator output by using a negative FM feedback loop, the effective Q-value of the oscillator corresponds to the original Q-value multiplied by the loop gain of the FM feedback loop so that the effective Q-value of the oscillator is increased.

摘要翻译： 提供了一种用于增加振荡器的有效Q值以使得可以通过使用低Q值振荡器达到所需Q值的装置和方法。 在该装置和方法中，通过FM检测器在振荡器的输出处测量FM噪声，并且将FM检测器的输出反馈到振荡器的控制输入。 通过使用该负FM反馈，通过在振荡器的控制输入端施加校正信号来抑制振荡器输出中的频率变化。 抑制量取决于FM反馈环路的环路增益，抑制量与环路增益成正比，因此振荡器的有效Q值与环路增益成比例。 通过使用负FM反馈环来校正在振荡器输出处测量的FM噪声的结果，振荡器的有效Q值对应于原始Q值乘以FM反馈回路的环路增益，使得有效 振荡器的Q值增加。

公开(公告)号：US06653908B1

公开(公告)日：2003-11-25

申请号：US09982762

申请日：2001-10-18

申请人： Mark Alan Jones

发明人： Mark Alan Jones

IPC分类号： H03B500

CPC分类号： H03L5/00 ,  H03B5/1203 ,  H03B5/1215 ,  H03B5/1231 ,  H03B5/1243 ,  H03B5/1278 ,  H03B2202/076

摘要： An oscillator with oscillator and voltage control circuitry for generating an oscillation signal having an amplitude that is automatically controlled for a selectively minimized phase noise. Automatic level control is used for controlling the amplitude of the oscillation signal such that the phase noise of the oscillation signal can be maintained at some selected level, e.g., minimized. The minimum signal voltage appearing across the oscillation circuit is monitored for controlling the bias of the circuit to prevent it from entering a saturation state, thereby avoiding adverse loading effects responsible for degraded phase noise performance.

摘要翻译： 具有振荡器和电压控制电路的振荡器，用于产生具有自动控制的幅度的振荡信号，用于选择性地最小化的相位噪声。 自动电平控制用于控制振荡信号的振幅，使得振荡信号的相位噪声可以保持在某个选定的电平，例如最小化。 监控出现在振荡电路两端的最小信号电压，以控制电路的偏置，以防止其进入饱和状态，从而避免负面影响降低相位噪声性能。

公开(公告)号：US5841322A

公开(公告)日：1998-11-24

申请号：US755704

申请日：1996-11-25

申请人： Eugene Nikolay Ivanov ,  Michael Edmund Tobar ,  Richard Alec Woode

发明人： Eugene Nikolay Ivanov ,  Michael Edmund Tobar ,  Richard Alec Woode

IPC分类号： G01R29/26 ,  G01R31/28 ,  H03B1/04 ,  H03B5/18 ,  H03L7/00 ,  H04B15/00 ,  H03D13/00

CPC分类号： H03B5/18 ,  G01R29/26 ,  G01R31/2824 ,  H03B2202/027 ,  H03B2202/076

摘要： A phase detector responsive to a first signal having a carrier frequency and a second signal close to the carrier frequency, including a carrier suppression circuit which produces a carrier suppressed signal from the first and second signals, and a mixer responsive to the carrier suppressed signal and the carrier frequency to produce an output signal corresponding to the phase difference between the first and second signals.

摘要翻译： 响应于具有载波频率和接近载波频率的第二信号的第一信号的相位检测器，包括从第一和第二信号产生载波抑制信号的载波抑制电路，以及响应载波抑制信号的混频器，以及 载波频率以产生对应于第一和第二信号之间的相位差的输出信号。

公开(公告)号：US5661439A

公开(公告)日：1997-08-26

申请号：US680287

申请日：1996-07-11

申请人： Grant H. Watkins ,  Stephen P. Caldwell ,  Matthew Martello ,  John P. Muhlbaier

发明人： Grant H. Watkins ,  Stephen P. Caldwell ,  Matthew Martello ,  John P. Muhlbaier

IPC分类号： H03B1/04 ,  H03L7/02 ,  H03B28/00 ,  H03L7/00

CPC分类号： H03B1/04 ,  H03L7/02 ,  H03B2202/027 ,  H03B2202/076

摘要： A frequency oscillator and a frequency multiplier multiplying the signals from the oscillator contain inherent phase noise. A phase noise canceller removes phase noise, due to both the oscillator and the multiplier, by inserting a delay in one path and comparing phases of the delayed signal and the undelayed signal. This comparison may be either fed back to the tuning port of the oscillator or fed forward to a phase shifter which shakes off the phase noise. The delay may include a delay line, a cavity or any other suitable device which produces a phase shift. The phase noise canceller may also be designed to remove the total phase noise of the system, including additive phase noise from sources other than the oscillator and multiplier. The canceller may be calibrated and may be designed to reduce periodic response thereof.

摘要翻译： 将来自振荡器的信号相乘的频率振荡器和倍频器包含固有的相位噪声。 相位噪声消除器通过在一个路径中插入延迟并且比较延迟信号和未延迟信号的相位来消除由于振荡器和乘法器两者引起的相位噪声。 该比较可以被反馈到振荡器的调谐端口，或者被馈送到移相器，其移除相位噪声。 延迟可以包括延迟线，空腔或产生相移的任何其它合适的装置。 相位噪声消除器还可以被设计为去除系统的总相位噪声，包括来自振荡器和乘法器之外的源的相位相位噪声。 消除器可以被校准，并且可以被设计为减少其周期性响应。

公开(公告)号：US5248948A

公开(公告)日：1993-09-28

申请号：US872998

申请日：1992-04-24

申请人： Nobuo Shiga

发明人： Nobuo Shiga

IPC分类号： H01L29/812 ,  H01L21/338 ,  H01L27/06 ,  H03B1/00 ,  H03B1/04 ,  H03B5/18

CPC分类号： H01L27/0605 ,  H03B5/1852 ,  H03B2200/0028 ,  H03B2200/0032 ,  H03B2200/0062 ,  H03B2201/0208 ,  H03B2202/025 ,  H03B2202/076

摘要： The oscillating apparatus according to this invention includes a pulse doped FET 1, and a series feedback capacitor 2 connected to the source of the pulse doped FET 1. The pulse doped FET is a FET formed on a pulse doped epitaxial layer including a channel layer 23 with a high carrier density, and a cap layer 24 with a low carrier density formed on the channel layer 23. The series feedback capacitor 2 is a variable capacitor whose capacitance value increases when a gate bias voltage of the pulse doped FET 1 is changed to increase a drain current of the pulse doped FET 1. Consequently it is possible to reduce phase noises by controlling only the gate bias with an oscillation frequency set at a required value. As a result, the merits of the MMIC can be sufficiently utilized without the necessity of externally adding a dielectric resonator.