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1. 发明授权

US5410571A PLL frequency synthesizer circuit 失效
标题翻译： PLL频率合成器电路
公开(公告)号：US5410571A
公开(公告)日：1995-04-25
申请号：US121546
申请日：1993-09-16
申请人： Masayuki Yonekawa , Takehiro Akiyama , Shinji Saito , Tetsuya Aisaka , Minoru Takagi
发明人： Masayuki Yonekawa , Takehiro Akiyama , Shinji Saito , Tetsuya Aisaka , Minoru Takagi
IPC分类号： H03L7/089 , H03L7/095 , H03L7/107 , H03L7/183 , H03D3/24
CPC分类号： H03L7/107 , H03L7/0891 , H03L7/0898 , H03L7/095 , H03L7/183 , Y10S331/02
摘要： A reference frequency divider divides a clock signal into a reference frequency signal, and outputs it. A comparison frequency divider circuit divides an output signal from a voltage controlled oscillator, and outputs it as a comparison signal. The reference signal and comparison signal are coupled to a phase comparator. The phase comparator detects the phase difference between the reference signal and comparison signal, and outputs a phase difference signal. A charge pump outputs a voltage signal in response to the phase difference signal from the phase comparator. A low pass filter smooths out the voltage signal from the charge pump to remove the high frequency components, and outputs a controlled voltage signal. A voltage controlled oscillator outputs an output signal with the frequency relating to the voltage value of the controlled voltage signal from the low pass filter. A frequency difference determining circuit compares the reference signal with the comparison signal. The circuit outputs a signal indicative of the frequency locked when the frequency difference is within the preset range, and outputs a signal indicative of the frequency unlocked when the difference of the frequency exceeds the preset range.
摘要翻译：参考分频器将时钟信号分频为参考频率信号，并将其输出。比较分频器电路分压来自压控振荡器的输出信号，并将其作为比较信号输出。参考信号和比较信号耦合到相位比较器。相位比较器检测参考信号和比较信号之间的相位差，并输出相位差信号。电荷泵响应于来自相位比较器的相位差信号输出电压信号。低通滤波器平滑电荷泵的电压信号，去除高频分量，并输出受控电压信号。压控振荡器以与低通滤波器的受控电压信号的电压值相关的频率输出输出信号。频率差确定电路将参考信号与比较信号进行比较。当频率差在预设范围内时，电路输出指示频率被锁定的信号，并且当频率差超过预设范围时输出表示频率被解锁的信号。

2. 发明授权

US08049539B2 Circuit with variation correction function 有权
标题翻译：电路具有变化校正功能
公开(公告)号：US08049539B2
公开(公告)日：2011-11-01
申请号：US10401604
申请日：2003-03-31
申请人： Masayuki Yonekawa , Takehito Doi
发明人： Masayuki Yonekawa , Takehito Doi
IPC分类号： H03L7/00
CPC分类号： H03B5/04 , H03L1/00 , H03L7/099
摘要： A circuit with variation correction function is capable of obtaining an output characteristic near a desired value by suppressing variation of the output characteristic regardless of manufacturing characteristic variations of a component. An output signal different in phase from a reference signal is obtained by a dummy circuit having a capacitor of a same structure as a correction object capacitor in an operation circuit. The difference in phase between the reference signal and the output signal reflects manufacturing characteristic variation of the correction object capacitor. The difference in phase is detected by a phase comparator circuit and control signals are created by a control signal conversion circuit. Switches in the operation circuit are changed over with the control signal to adjust the capacitance of the correction object capacitor. The correction object capacitor is actuated at a capacitance near design capacitance regardless of manufacturing characteristic variation of the correction object capacitor.
摘要翻译：具有变化校正功能的电路能够通过抑制输出特性的变化来获得接近期望值的输出特性，而不管部件的制造特性变化如何。通过具有与运算电路中的校正对象电容器相同结构的电容器的虚拟电路来获得与参考信号不同相位的输出信号。参考信号和输出信号之间的相位差反映了校正对象电容器的制造特性变化。相位差由相位比较器电路检测，控制信号由控制信号转换电路产生。通过控制信号切换操作电路中的开关，以调整校正对象电容器的电容。无论校正对象电容器的制造特性变化如何，校正对象电容器以设计电容附近的电容被致动。

3. 发明授权

US07482882B2 Voltage control oscillation circuit and adjusting method for the same 有权
标题翻译：电压控制振荡电路及调整方法相同
公开(公告)号：US07482882B2
公开(公告)日：2009-01-27
申请号：US11143643
申请日：2005-06-03
申请人： Masayuki Yonekawa , Yasuhiro Korogouchi , Mayo Kitano
发明人： Masayuki Yonekawa , Yasuhiro Korogouchi , Mayo Kitano
IPC分类号： H03L7/093
CPC分类号： H03H7/0153 , H03B5/1215 , H03B5/1231 , H03B5/1243 , H03B5/1253 , H03B5/1293 , H03H11/04 , H03H11/1291
摘要： A voltage control oscillation (VCO) circuit and an adjusting method for the same, which enables an adjustment for suppressing the dispersion of the output characteristic in spite of the manufacture-related dispersion of element characteristics, using a simple circuit configuration, are provided. A low-pass filter 15 and a high-pass filter 16 are composed of the elements that have the same structure as elements composing the VCO circuit 11, and a prescribed correlation is established between both elements. A corrective element 14 is connected in parallel to a main element, in which an oscillation frequency control signal VT is input, in the VCO circuit 11. Respective frequency-gain characteristic lines of the low-pass/high-pass filters 15 and 16 have gradients reverse to each other and cross at a target gain TG. When the capacitance value lowers in dispersion, the level of an output signal SL2 becomes higher than that of an output signal SH2 at a reference frequency fREF to form an output level difference LD2. In response, an adjusting signal VCNT2 is output in correspondence to the output level difference LD2 to lower an oscillation frequency fVCO.
摘要翻译：提供一种电压控制振荡（VCO）电路及其调整方法，其使用简单的电路配置，能够进行用于抑制元件特性的制造相关色散的输出特性的偏差的调整。低通滤波器15和高通滤波器16由具有与组成VCO电路11的元件相同结构的元件构成，并且在两个元件之间建立规定的相关性。校正元件14并联连接到VCO电路11中输入振荡频率控制信号VT的主要元件。低通/高通滤波器15和16的各频率增益特性线具有梯度相互相反并以目标增益TG交叉。当电容值在色散中降低时，输出信号SL2的电平变得高于基准频率fREF的输出信号SH2的电平，以形成输出电平差LD2。作为响应，对应于输出电平差LD2输出调整信号VCNT2，以降低振荡频率fVCO。

4. 发明申请

US20060158266A1 Voltage control oscillation circuit and adjusting method for the same 有权
标题翻译：电压控制振荡电路及调整方法相同
公开(公告)号：US20060158266A1
公开(公告)日：2006-07-20
申请号：US11143643
申请日：2005-06-03
申请人： Masayuki Yonekawa , Yasuhiro Korogouchi , Mayo Kitano
发明人： Masayuki Yonekawa , Yasuhiro Korogouchi , Mayo Kitano
IPC分类号： H03L7/00
CPC分类号： H03H7/0153 , H03B5/1215 , H03B5/1231 , H03B5/1243 , H03B5/1253 , H03B5/1293 , H03H11/04 , H03H11/1291
摘要： A voltage control oscillation (VCO) circuit and an adjusting method for the same, which enables an adjustment for suppressing the dispersion of the output characteristic in spite of the manufacture-related dispersion of element characteristics, using a simple circuit configuration, are provided. A low-pass filter 15 and a high-pass filter 16 are composed of the elements that have the same structure as elements composing the VCO circuit 11, and a prescribed correlation is established between both elements. A corrective element 14 is connected in parallel to a main element, in which an oscillation frequency control signal VT is input, in the VCO circuit 11. Respective frequency-gain characteristic lines of the low-pass/high-pass filters 15 and 16 have gradients reverse to each other and cross at a target gain TG. When the capacitance value lowers in dispersion, the level of an output signal SL2 becomes higher than that of an output signal SH2 at a reference frequency fREF to form an output level difference LD2. In response, an adjusting signal VCNT2 is output in correspondence to the output level difference LD2 to lower an oscillation frequency fVCO.
摘要翻译：提供一种电压控制振荡（VCO）电路及其调整方法，其使用简单的电路配置，能够进行用于抑制元件特性的制造相关色散的输出特性的偏差的调整。低通滤波器15和高通滤波器16由具有与组成VCO电路11的元件相同结构的元件构成，并且在两个元件之间建立规定的相关性。在VCO电路11中，校正元件14并联连接到其中输入振荡频率控制信号VT的主元件。低通/高通滤波器15和16的相应频率增益特性线具有彼此相反的梯度并且以目标增益TG交叉。当电容值降低时，输出信号SL 2的电平变得高于基准频率fREF的输出信号SH 2的电平，以形成输出电平差LD 2。作为响应，对应于输出电平差LD 2输出调节信号VCNT 2，以降低振荡频率fVCO。

5. 发明授权

US06853257B2 PLL circuit including a voltage controlled oscillator and a method for controlling a voltage controlled oscillator 有权
标题翻译： PLL电路包括压控振荡器和控制压控振荡器的方法
公开(公告)号：US06853257B2
公开(公告)日：2005-02-08
申请号：US10443105
申请日：2003-05-22
申请人： Masayuki Yonekawa , Takehito Doi
发明人： Masayuki Yonekawa , Takehito Doi
IPC分类号： H03B5/08 , H03B1/00 , H03B5/12 , H03L7/099 , H03L7/10
CPC分类号： H03L7/193 , H03B5/1215 , H03B5/1231 , H03B5/1243 , H03B5/1265 , H03B5/1293 , H03B2201/025 , H03J2200/10
摘要： A voltage controlled oscillator having a wide oscillation frequency band, desirable carrier-noise characteristic, and desirable linearity of the oscillation frequency relative to a control voltage. The voltage controlled oscillator includes an oscillation unit and a control unit. The oscillation unit generates an output signal having an oscillation frequency corresponding to the control voltage in one of a plurality of oscillation frequency bands. The oscillation unit includes a switching unit for selecting one of the plurality of oscillation frequency bands in accordance with a switching signal. The control unit generates the switching signal in accordance with the control voltage.
摘要翻译：具有宽振荡频带，期望载波噪声特性以及振荡频率相对于控制电压的期望线性度的压控振荡器。压控振荡器包括振荡单元和控制单元。振荡单元产生具有与多个振荡频带之一中的控制电压相对应的振荡频率的输出信号。振荡单元包括用于根据切换信号选择多个振荡频带中的一个的切换单元。控制单元根据控制电压生成开关信号。

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