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公开(公告)号：US10079581B2
公开(公告)日：2018-09-18
申请号：US15162677
申请日：2016-05-24
发明人： Seok Ju Yun , Seongjoong Kim , Yongkyu Kim , Young Jun Hong
CPC分类号： H03G3/3036 , H03B5/1212 , H03B5/1228 , H03B2200/0096 , H03D11/04 , H03F3/19 , H03F3/265 , H03F2200/102 , H03F2200/294 , H03F2200/451 , H03G3/3052
摘要： A receiver includes a low noise amplifier (LNA) configured to amplify an input RF signal using a first current supplied by a first current source, and a voltage controlled oscillator (VCO) for applying an oscillation frequency to the amplified signal by generating an oscillation signal using the first current.
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公开(公告)号：US20170117862A1
公开(公告)日：2017-04-27
申请号：US15162677
申请日：2016-05-24
发明人： Seok Ju YUN , Seongjoong KIM , Yongkyu KIM , Young Jun HONG
CPC分类号： H03G3/3036 , H03B5/1212 , H03B5/1228 , H03B2200/0096 , H03D11/04 , H03F3/19 , H03F3/265 , H03F2200/102 , H03F2200/294 , H03F2200/451 , H03G3/3052
摘要： A receiver includes a low noise amplifier (LNA) configured to amplify an input RF signal using a first current supplied by a first current source, and a voltage controlled oscillator (VCO) for applying an oscillation frequency to the amplified signal by generating an oscillation signal using the first current.
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3.发明授权公开(公告)号：US06970050B2
公开(公告)日：2005-11-29
申请号：US10735758
申请日：2003-12-16
申请人： Yoshirou Satou , Kazuhiro Iida , Masamichi Tamura
发明人： Yoshirou Satou , Kazuhiro Iida , Masamichi Tamura
CPC分类号： H03B5/1231 , H03B5/1203 , H03B5/1281 , H03B2200/0008 , H03B2200/0094 , H03B2200/0096
摘要： An oscillator includes a transistor, a first bias resistor connected between the base of the transistor and a power input terminal, and a second bias resistor connected between the base of the transistor and a control-voltage input terminal. When the control-voltage input terminal is grounded, the bias voltage at the base of the transistor is below a predetermined threshold, thus causing the oscillator to stop oscillation. When the control-voltage input terminal is open, the bias voltage at the base of the transistor is above the threshold, thus causing the oscillator to start oscillation.
摘要翻译： 振荡器包括晶体管，连接在晶体管的基极和电源输入端之间的第一偏置电阻，以及连接在晶体管的基极与控制电压输入端之间的第二偏置电阻。 当控制电压输入端子接地时，晶体管基极的偏置电压低于预定阈值，从而使振荡器停止振荡。 当控制电压输入端子打开时，晶体管基极的偏置电压高于阈值，从而使振荡器开始振荡。
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4.发明申请公开(公告)号：US20040160284A1
公开(公告)日：2004-08-19
申请号：US10735758
申请日：2003-12-16
发明人： Yoshirou Satou , Kazuhiro Iida , Masamichi Tamura
IPC分类号： H03B005/18
CPC分类号： H03B5/1231 , H03B5/1203 , H03B5/1281 , H03B2200/0008 , H03B2200/0094 , H03B2200/0096
摘要： An oscillator includes a transistor, a first bias resistor connected between the base of the transistor and a power input terminal, and a second bias resistor connected between the base of the transistor and a control-voltage input terminal. When the control-voltage input terminal is grounded, the bias voltage at the base of the transistor is below a predetermined threshold, thus causing the oscillator to stop oscillation. When the control-voltage input terminal is open, the bias voltage at the base of the transistor is above the threshold, thus causing the oscillator to start oscillation.
摘要翻译： 振荡器包括晶体管，连接在晶体管的基极和电源输入端之间的第一偏置电阻，以及连接在晶体管的基极与控制电压输入端之间的第二偏置电阻。 当控制电压输入端子接地时，晶体管基极的偏置电压低于预定阈值，从而使振荡器停止振荡。 当控制电压输入端子打开时，晶体管基极的偏置电压高于阈值，从而使振荡器开始振荡。
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公开(公告)号：US20110032043A1
公开(公告)日：2011-02-10
申请号：US12629370
申请日：2009-12-02
申请人： William C. Athas
发明人： William C. Athas
IPC分类号： H03B5/12
CPC分类号： H02M3/07 , H03B5/06 , H03B5/1212 , H03B5/1228 , H03B2200/0094 , H03B2200/0096
摘要： Some embodiments of the present invention provide a system that implements a resonant oscillator circuit. This resonant oscillator circuit includes: a first inductor, a second inductor, a first capacitance, and a second capacitance, wherein the first and second inductors are configured to operate with the first and second capacitances to produce resonant oscillations which appear at a first phase output and a second phase output. The system also includes a startup circuit which is configured to start the resonant oscillator circuit in a state where: the first phase output is at a peak voltage; the second phase output is at a base voltage; and currents through the first and second inductors are substantially zero. By starting the resonant oscillator circuit in this state, the oscillations commence without a significant startup transient.
摘要翻译： 本发明的一些实施例提供一种实现谐振振荡器电路的系统。 该谐振振荡器电路包括：第一电感器，第二电感器，第一电容器和第二电容器，其中第一和第二电感器被配置为与第一和第二电容器一起工作，以产生出现在第一相位输出 和第二相输出。 该系统还包括启动电路，其被配置为在第一相输出处于峰值电压的状态下启动谐振振荡器电路; 第二相输出为基极电压; 并且通过第一和第二电感器的电流基本上为零。 通过在该状态下启动谐振振荡器电路，振荡开始而没有明显的启动瞬变。
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公开(公告)号：US20110032042A1
公开(公告)日：2011-02-10
申请号：US12540578
申请日：2009-08-13
申请人： William C. Athas
发明人： William C. Athas
IPC分类号： H03B5/12
CPC分类号： H02M3/07 , H03B5/06 , H03B5/1212 , H03B5/1228 , H03B2200/0094 , H03B2200/0096
摘要： Some embodiments of the present invention provide a system that implements a resonant oscillator circuit. This system includes a first inductor with a constant potential terminal coupled to an input voltage, and a time-varying potential terminal coupled to a first phase output. The system also includes a second inductor with a constant potential terminal coupled to the input voltage, and a time-varying potential terminal coupled to a second phase output. The system additionally includes a first n-type transistor with a source terminal coupled to a base voltage, a drain terminal coupled to the first phase output, and a gate terminal coupled to the second phase output. The system also includes a second n-type transistor with a source terminal coupled to the base voltage, a drain terminal coupled to the second phase output, and a gate terminal coupled to the first phase output. Finally, the system includes a startup circuit configured to commence oscillations in the resonant oscillator circuit by energizing the first inductor before energizing the second inductor.
摘要翻译： 本发明的一些实施例提供一种实现谐振振荡器电路的系统。 该系统包括具有耦合到输入电压的恒定电位端的第一电感器和耦合到第一相输出的时变电位端子。 该系统还包括具有耦合到输入电压的恒定电位端子的第二电感器和耦合到第二相输出端的时变电位端子。 该系统还包括具有耦合到基极电压的源极端子的第一n型晶体管，耦合到第一相位输出的漏极端子和耦合到第二相位输出的栅极端子。 该系统还包括具有耦合到基极电压的源极端子的第二n型晶体管，耦合到第二相位输出的漏极端子和耦合到第一相位输出的栅极端子。 最后，该系统包括启动电路，该启动电路经配置以在激励第二电感器之前激励第一电感器来开始谐振振荡器电路中的振荡。
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公开(公告)号：US06169462A
公开(公告)日：2001-01-02
申请号：US09353240
申请日：1999-07-14
申请人： David Glenn White
发明人： David Glenn White
IPC分类号： H03B532
CPC分类号： H03K3/0307 , H03B5/06 , H03B5/36 , H03B2200/0094 , H03B2200/0096 , H03B2201/0208 , H03K3/014
摘要： A first inverter is provided with a feedback resistor for biasing the inverter to a linear operating range and an AC feedback path for causing oscillations to occur. A controlled current source, responsive to a control signal Vc supplied thereto and coupled to an input of the inverter supplies a current in a first sense thereto for enabling the oscillations and supplies a current in a second sense thereto for inhibiting the oscillations. The controlled current source comprises a second inverter for amplifying the control signal Vc to a logic level substantially greater than that of the first inverter and a current limiting resistor coupled in series with the second inverter for limiting current flow to and from the input of the first inverter.
摘要翻译： 第一反相器设置有用于将反相器偏置到线性工作范围的反馈电阻器和用于引起振荡的AC反馈路径。 受控电流源响应于提供给其的控制信号Vc并耦合到逆变器的输入端，以第一种方式向其提供电流以实现振荡，并将第二种方式的电流提供给其用于抑制振荡。 受控电流源包括第二反相器，用于将控制信号Vc放大到大于第一反相器的逻辑电平的逻辑电平;以及与第二反相器串联耦合的限流电阻，用于限制电流流入和流出第一 逆变器。
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公开(公告)号：US09369139B1
公开(公告)日：2016-06-14
申请号：US14622851
申请日：2015-02-14
发明人： Min Chu , Jagdeep Bal
CPC分类号： H03L7/0995 , H03B2200/009 , H03B2200/0094 , H03B2200/0096 , H03K3/013 , H03K3/0315 , H03L3/00 , H03L7/081 , H03L7/183 , H03L2207/06
摘要： Methods and apparatuses are described to reduce phase noise in a low noise fractional reference-injection phase locked loop (FRIPLL). The FRIPLL includes a ring voltage controlled oscillator (VCO). An output of the ring VCO is input to a fractional interpolative frequency divider (FIFD). A signal comparison circuit receives a reference clock signal and a further delayed output of the FIFD. The signal comparison circuit produces a control voltage signal in response to a phase difference between the reference clock signal and the further delayed output of the FIFD. The control voltage signal is input to the ring VCO to control a ring VCO frequency. An oscillator control circuit has a first input and a second input. The first input is a first delayed output of the FIFD. The second input is the reference clock signal. The oscillator control circuit generates a realignment signal which is used to realign a state transition in a ring VCO output signal to the reference clock signal when the ring VCO output signal is in a low state. Realignment occurs repeatedly at a frequency of the reference clock signal.
摘要翻译： 描述了在低噪声分数参考 - 注入锁相环（FRIPLL）中减少相位噪声的方法和装置。 FRIPLL包括一个环形压控振荡器（VCO）。 环形VCO的输出被输入到分数内插分频器（FIFD）。 信号比较电路接收FIFD的参考时钟信号和进一步延迟的输出。 信号比较电路响应于参考时钟信号和FIFD的进一步延迟输出之间的相位差产生控制电压信号。 控制电压信号被输入到环形VCO以控制环形VCO频率。 振荡器控制电路具有第一输入和第二输入。 第一个输入是FIFD的第一个延迟输出。 第二个输入是参考时钟信号。 当环形VCO输出信号处于低电平状态时，振荡器控制电路产生一个重新对准信号，该对准信号用于将环形VCO输出信号中的状态转换重新对准基准时钟信号。 在参考时钟信号的频率处重复对准。
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公开(公告)号：US09369085B1
公开(公告)日：2016-06-14
申请号：US14836727
申请日：2015-08-26
申请人： NXP B.V.
发明人： Frank Leong , Yuan Gao , Robert Bogdan Staszewski
CPC分类号： H03B5/1212 , H03B5/06 , H03B5/1225 , H03B5/1228 , H03B5/1262 , H03B5/1268 , H03B2200/0094 , H03B2200/0096
摘要： In an example embodiment, an apparatus includes an LC circuit having a capacitive circuit and an inductive circuit connected in a circuit loop. The inductive circuit includes one or more inductive elements and a switching circuit. In a first mode, the switching circuit provides a direct-current charge voltage across the LC circuit and prevents oscillation of energy between the capacitive circuit and the inductive circuit by opening a switch in the circuit loop of the LC circuit. In a second mode, the switching circuit enables oscillation of energy between the capacitive circuit and the inductive circuit by closing the switch in the circuit loop.
摘要翻译： 在示例性实施例中，一种装置包括具有电容电路的LC电路和以电路回路连接的感应电路。 感应电路包括一个或多个电感元件和开关电路。 在第一模式中，开关电路在LC电路两端提供直流充电电压，并通过打开LC电路的电路回路中的开关来防止电容电路和感应电路之间的能量振荡。 在第二模式中，开关电路通过闭合电路回路中的开关来实现电容电路和感应电路之间的能量的振荡。
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公开(公告)号：US08085103B2
公开(公告)日：2011-12-27
申请号：US12629370
申请日：2009-12-02
申请人： William C. Athas
发明人： William C. Athas
IPC分类号： H03K3/282
CPC分类号： H02M3/07 , H03B5/06 , H03B5/1212 , H03B5/1228 , H03B2200/0094 , H03B2200/0096
摘要： Some embodiments of the present invention provide a system that implements a resonant oscillator circuit. This resonant oscillator circuit includes: a first inductor, a second inductor, a first capacitance, and a second capacitance, wherein the first and second inductors are configured to operate with the first and second capacitances to produce resonant oscillations which appear at a first phase output and a second phase output. The system also includes a startup circuit which is configured to start the resonant oscillator circuit in a state where: the first phase output is at a peak voltage; the second phase output is at a base voltage; and currents through the first and second inductors are substantially zero. By starting the resonant oscillator circuit in this state, the oscillations commence without a significant startup transient.
摘要翻译： 本发明的一些实施例提供一种实现谐振振荡器电路的系统。 该谐振振荡器电路包括：第一电感器，第二电感器，第一电容器和第二电容器，其中第一和第二电感器被配置为与第一和第二电容器一起工作，以产生出现在第一相位输出 和第二相输出。 该系统还包括启动电路，其被配置为在第一相输出处于峰值电压的状态下启动谐振振荡器电路; 第二相输出为基极电压; 并且通过第一和第二电感器的电流基本上为零。 通过在该状态下启动谐振振荡器电路，振荡开始而没有明显的启动瞬变。
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