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1. 发明授权

US07310506B2 Differential voltage control oscillator including radio-frequency switching circuits 有权
标题翻译：差分电压控制振荡器包括射频开关电路
公开(公告)号：US07310506B2
公开(公告)日：2007-12-18
申请号：US11068930
申请日：2005-03-02
申请人： Takayuki Tsukizawa , Koji Takinami , Hisashi Adachi , Yukio Hiraoka
发明人： Takayuki Tsukizawa , Koji Takinami , Hisashi Adachi , Yukio Hiraoka
IPC分类号： H04B1/40 , H04B1/00 , H04B7/00 , H03B5/00
CPC分类号： H03B5/1228 , H03B5/1215 , H03B5/1243 , H03B5/1265
摘要： The present invention provides a differential voltage control oscillator including: a parallel resonance circuit in which an inductor circuit, a variable capacitance circuit, and a radio-frequency switching circuit are connected in parallel together; and a negative resistance circuit connected in parallel with the parallel resonance circuit. The radio-frequency switching circuit includes: a first switching element; a first capacitive element; a second switching element; a second capacitive element; a control voltage terminal for supplying a common control voltage to the first and second switching control terminals, the control voltage terminal being connected to a virtual ground point for a differential signal generated in the parallel resonance circuit; a first radio-frequency signal reduction section connected between the control voltage terminal and the first switching element; and a second radio-frequency signal reduction section connected between the control voltage terminal and the second switching element.
摘要翻译：本发明提供了一种差分电压控制振荡器，包括：并联谐振电路，其中电感器电路，可变电容电路和射频切换电路并联连接; 以及与并联谐振电路并联连接的负电阻电路。射频切换电路包括：第一开关元件; 第一电容元件; 第二开关元件; 第二电容元件; 控制电压端子，用于向第一和第二开关控制端子提供公共控制电压，控制电压端子连接到虚拟接地点，用于在并联谐振电路中产生的差分信号; 连接在所述控制电压端子与所述第一开关元件之间的第一射频信号降低部; 以及连接在所述控制电压端子和所述第二开关元件之间的第二射频信号降低部分。

2. 发明申请

US20050197085A1 Differential voltage control oscillator including radio-frequency switching circuits 有权
标题翻译：差分电压控制振荡器包括射频开关电路
公开(公告)号：US20050197085A1
公开(公告)日：2005-09-08
申请号：US11068930
申请日：2005-03-02
申请人： Takayuki Tsukizawa , Koji Takinami , Hisashi Adachi , Yukio Hiraoka
发明人： Takayuki Tsukizawa , Koji Takinami , Hisashi Adachi , Yukio Hiraoka
IPC分类号： H04B1/06 , H04B1/40 , H04B7/00
CPC分类号： H03B5/1228 , H03B5/1215 , H03B5/1243 , H03B5/1265
摘要： The present invention provides a differential voltage control oscillator including: a parallel resonance circuit in which an inductor circuit, a variable capacitance circuit, and a radio-frequency switching circuit are connected in parallel together; and a negative resistance circuit connected in parallel with the parallel resonance circuit. The radio-frequency switching circuit includes: a first switching element; a first capacitive element; a second switching element; a second capacitive element; a control voltage terminal for supplying a common control voltage to the first and second switching control terminals, the control voltage terminal being connected to a virtual ground point for a differential signal generated in the parallel resonance circuit; a first radio-frequency signal reduction section connected between the control voltage terminal and the first switching element; and a second radio-frequency signal reduction section connected between the control voltage terminal and the second switching element.
摘要翻译：本发明提供了一种差分电压控制振荡器，包括：并联谐振电路，其中电感器电路，可变电容电路和射频切换电路并联连接; 以及与并联谐振电路并联连接的负电阻电路。射频切换电路包括：第一开关元件; 第一电容元件; 第二开关元件; 第二电容元件; 控制电压端子，用于向第一和第二开关控制端子提供公共控制电压，控制电压端子连接到虚拟接地点，用于在并联谐振电路中产生的差分信号; 连接在所述控制电压端子与所述第一开关元件之间的第一射频信号降低部; 以及连接在所述控制电压端子和所述第二开关元件之间的第二射频信号降低部分。

3. 发明申请

US20050156681A1 Voltage controlled oscillator 审中-公开
标题翻译：压控振荡器
公开(公告)号：US20050156681A1
公开(公告)日：2005-07-21
申请号：US11025154
申请日：2004-12-30
申请人： Koji Takinami , Takayuki Tsukizawa , Hisashi Adachi , Atsushi Ohara
发明人： Koji Takinami , Takayuki Tsukizawa , Hisashi Adachi , Atsushi Ohara
IPC分类号： H03K3/354 , H03K3/26
CPC分类号： H03K3/354
摘要： The present invention provides a voltage controlled oscillator for changing an oscillating frequency in accordance an input control voltage, including a parallel resonant circuit, a negative resistance circuit connected in parallel to the parallel resonant circuit, a first capacitor connected in parallel to the negative resistance circuit, a first current source connected between one terminal of the first capacitor and the negative resistance circuit, and a second current source connected between the other terminal of the first capacitor and the negative resistance circuit. The capacitance value of the first capacitor is set to a value that suppresses a signal with a frequency twice the oscillating frequency at both the terminals of the first capacitor. Each of the first and the second current sources is constituted by a bipolar transistor.
摘要翻译：本发明提供了一种用于根据输入控制电压来改变振荡频率的压控振荡器，包括并联谐振电路，与并联谐振电路并联连接的负电阻电路，与负电阻电路并联连接的第一电容器连接在第一电容器的一个端子和负电阻电路之间的第一电流源和连接在第一电容器的另一个端子和负电阻电路之间的第二电流源。将第一电容器的电容值设定为抑制在第一电容器的两端的频率为振荡频率两倍的频率的信号的值。第一和第二电流源中的每一个由双极晶体管构成。

4. 发明授权

US07170358B2 Voltage controlled oscillator, and PLL circuit and wireless communication apparatus using the same 有权
标题翻译：压控振荡器，PLL电路和使用该电路的无线通信装置
公开(公告)号：US07170358B2
公开(公告)日：2007-01-30
申请号：US11150151
申请日：2005-06-13
申请人： Takayuki Tsukizawa , Koji Takinami , Atsushi Ohara , Hisashi Adachi
发明人： Takayuki Tsukizawa , Koji Takinami , Atsushi Ohara , Hisashi Adachi
IPC分类号： H03B5/12 , H03L7/099
CPC分类号： H03L7/099 , H03B5/1215 , H03B5/1228 , H03B5/1265 , H03B5/1293 , H03B2200/0048 , H03B2200/0098 , H03L7/18
摘要： A voltage controlled oscillator comprises a parallel resonance circuit including an inductor circuit, a variable capacitance circuit, and a high-frequency switch circuit, a negative resistance circuit and a frequency control section, and a frequency tuning sensitivity control section. The frequency control section shifts a band of an oscillation frequency by controlling ON/OFF of a switching element included in the high-frequency switch circuit. The frequency tuning sensitivity control section adjusts a change rate of a total capacitance of the variable capacitance circuit with respect to a control voltage, depending on a band to be used. The frequency tuning sensitivity control section is connected to a virtual ground point of a differential signal.
摘要翻译：压控振荡器包括并联谐振电路，其包括电感器电路，可变电容电路和高频开关电路，负电阻电路和频率控制部分以及频率调谐灵敏度控制部分。频率控制部分通过控制包括在高频开关电路中的开关元件的ON / OFF来移动振荡频率的频带。频率调谐灵敏度控制部分根据所使用的频带来调节可变电容电路相对于控制电压的总电容的变化率。频率调谐灵敏度控制部分连接到差分信号的虚拟接地点。

5. 发明申请

US20050275478A1 Voltage controlled oscillator, and PLL circuit and wireless communication apparatus using the same 有权
标题翻译：压控振荡器，PLL电路和使用该电路的无线通信装置
公开(公告)号：US20050275478A1
公开(公告)日：2005-12-15
申请号：US11150151
申请日：2005-06-13
申请人： Takayuki Tsukizawa , Koji Takinami , Atsushi Ohara , Hisashi Adachi
发明人： Takayuki Tsukizawa , Koji Takinami , Atsushi Ohara , Hisashi Adachi
IPC分类号： H03B5/00 , H03B5/08 , H03B5/12
CPC分类号： H03L7/099 , H03B5/1215 , H03B5/1228 , H03B5/1265 , H03B5/1293 , H03B2200/0048 , H03B2200/0098 , H03L7/18
摘要： A voltage controlled oscillator comprises a parallel resonance circuit including an inductor circuit, a variable capacitance circuit, and a high-frequency switch circuit, a negative resistance circuit and a frequency control section, and a frequency tuning sensitivity control section. The frequency control section shifts a band of an oscillation frequency by controlling ON/OFF of a switching element included in the high-frequency switch circuit. The frequency tuning sensitivity control section adjusts a change rate of a total capacitance of the variable capacitance circuit with respect to a control voltage, depending on a band to be used. The frequency tuning sensitivity control section is connected to a virtual ground point of a differential signal.
摘要翻译：压控振荡器包括并联谐振电路，其包括电感器电路，可变电容电路和高频开关电路，负电阻电路和频率控制部分以及频率调谐灵敏度控制部分。频率控制部分通过控制包括在高频开关电路中的开关元件的ON / OFF来移动振荡频率的频带。频率调谐灵敏度控制部分根据所使用的频带来调节可变电容电路相对于控制电压的总电容的变化率。频率调谐灵敏度控制部分连接到差分信号的虚拟接地点。

6. 发明授权

US07701304B2 Voltage controlled oscillator, and PLL circuit and radio communication apparatus using the same 有权
标题翻译：压控振荡器，PLL电路及使用其的无线通信装置
公开(公告)号：US07701304B2
公开(公告)日：2010-04-20
申请号：US12035250
申请日：2008-02-21
申请人： Takayuki Tsukizawa , Koji Takinami
发明人： Takayuki Tsukizawa , Koji Takinami
IPC分类号： H03B5/18
CPC分类号： H03B5/1228 , H03B5/1215 , H03B5/1243 , H03B5/1265 , H03B5/1293 , H03B2201/025 , H03J2200/10
摘要： A voltage controlled oscillator has a reference voltage generation section for generating a plurality of reference voltage based on a power supply voltage. Reference voltages Vref1, Vref2, and Vref3 are inputted to variable capacitance circuits A, B, and C, respectively. Reference voltages Vref1, Vref2, and Vref3 each has a fixed value, and a difference between the first reference voltage Vref1 and the second reference voltage Vref2 and a difference between the second reference voltage Vref2 and the third reference voltage Vref3 represent values different from each other. A control voltage Vt for feedback-controlling an oscillation frequency is inputted to each of the other of the terminals of the variable capacitance element of each of the n variable capacitance circuits such that the control voltage Vt having the same value is inputted to the each of the other of the terminals.
摘要翻译：压控振荡器具有用于基于电源电压产生多个参考电压的参考电压产生部分。参考电压Vref1，Vref2和Vref3分别输入到可变电容电路A，B和C. 参考电压Vref1，Vref2和Vref3各自具有固定值，并且第一参考电压Vref1和第二参考电压Vref2之间的差以及第二参考电压Vref2与第三参考电压Vref3之间的差表示彼此不同的值。将用于反馈控制振荡频率的控制电压Vt输入到n个可变电容电路中的每一个的可变电容元件的另一个端子中，使得具有相同值的控制电压Vt被输入到另一个终端。

7. 发明授权

US07321271B2 Voltage-controlled oscillator, radio communication apparatus and voltage-controlled oscillation method for reducing degradation of phase noise characteristic 有权
标题翻译：压控振荡器，无线电通信装置和用于降低相位噪声特性降低的压控振荡方法
公开(公告)号：US07321271B2
公开(公告)日：2008-01-22
申请号：US10676654
申请日：2003-10-01
申请人： Koji Takinami , Hisashi Adachi , Tokio Endoh
发明人： Koji Takinami , Hisashi Adachi , Tokio Endoh
IPC分类号： H03B5/18
CPC分类号： H03B5/1215 , H03B5/1228 , H03B5/1253 , H03B5/1265 , H03B5/1293 , H03B2201/025 , H03L7/099
摘要： A voltage-controlled oscillator having an inductor circuit, n pieces (n is two or more) of variable capacitance circuit having variable capacitance elements, negative resistance circuits, and reference voltage generation means of generating a reference voltage from a power supply voltage, and wherein a predetermined reference voltage is inputted to some terminals of the variable capacitance elements of the n pieces of variable capacitance circuit, a control voltage is inputted to the other terminals thereof, and of the variable capacitance elements of the n pieces of variable capacitance circuits, the predetermined reference voltage inputted to some terminals of the variable capacitance elements of at least two pieces of the variable capacitance circuit is different.
摘要翻译：一种具有电感电路的压控振荡器，具有可变电容元件的可变电容电路的n个（n为2个以上），负电阻电路和从电源电压生成基准电压的基准电压生成单元，其中，将预定的参考电压输入到n个可变电容电路的可变电容元件的一些端子，将一个控制电压输入到其它端子，以及n个可变电容电路的可变电容元件，输入至少两个可变电容电路的可变电容元件的一些端子的预定参考电压是不同的。

8. 发明授权

US07142614B2 Signal generating circuit for generating a reference phase signal and a quadrature signal 失效
标题翻译：用于产生参考相位信号和正交信号的信号产生电路
公开(公告)号：US07142614B2
公开(公告)日：2006-11-28
申请号：US10345385
申请日：2003-01-16
申请人： Koji Takinami , Hisashi Adachi , Makoto Sakakura
发明人： Koji Takinami , Hisashi Adachi , Makoto Sakakura
IPC分类号： H04L27/00 , H03B21/00 , H03K3/00 , H03K5/13 , H03K23/00 , H03K25/00
CPC分类号： H03D7/165
摘要： In a signal generating circuit SG1, a 90 -degree divider 3 generates, from a local oscillation signal SLO supplied through an input terminal 1, an intermediate reference phase signal ISREF and an intermediate quadrature signal ISQR orthogonal in phase to the intermediate reference phase signal ISREF for output to mixers 6 and 7, respectively. A shifter 4 shifts the phase of the local oscillation signal supplied through an input terminal 2 by a predetermined amount to generate a shift signal SSFT for output through a divider 5 to the mixers 6 and 7. The mixer 6 mixes the input intermediate reference phase signal ISREF and the input shift signal SSFT to generate a reference phase signal SREF. The mixer 7 mixes intermediate quadrature signal ISQR and the input shift signal SSFT to generate a quadrature signal SQR. With this, it is possible to provide a signal generator capable of generating highly-accurate, high-frequency reference phase signals and quadrature signals.
摘要翻译：在信号发生电路SG1中，90度分频器3根据通过输入端1提供的本地振荡信号S LOLO产生中间参考相位信号IS SUB REF 以及与中间参考相位信号IS SUB REF的相位正交的中间正交信号IS 分别用于输出到混频器6和7。移位器4将通过输入端子2提供的本地振荡信号的相位移动预定量，以产生用于通过分频器5输出到混频器6和7的移位信号S SFT。混频器6将输入的中间参考相位信号IS 和输入移位信号S SFT 混合以产生参考相位信号S REF。混频器7混合中间正交信号IS 和输入移位信号S SFT 以产生正交信号S QR。由此，能够提供能够生成高精度，高频参考相位信号和正交信号的信号发生器。

9. 发明申请

US20050190002A1 Voltage-controlled oscillator, radio communication apparatus and voltage-controlled oscillation method 有权
标题翻译：压控振荡器，无线通信装置和压控振荡方法
公开(公告)号：US20050190002A1
公开(公告)日：2005-09-01
申请号：US10676654
申请日：2003-10-01
申请人： Koji Takinami , Hisashi Adachi , Tokio Endoh
发明人： Koji Takinami , Hisashi Adachi , Tokio Endoh
IPC分类号： H03B1/00 , H03B5/00 , H03B5/12 , H03B7/06 , H03C3/22 , H04B1/16
CPC分类号： H03B5/1215 , H03B5/1228 , H03B5/1253 , H03B5/1265 , H03B5/1293 , H03B2201/025 , H03L7/099
摘要： A voltage-controlled oscillator having an inductor circuit, n pieces (n is two or more) of variable capacitance circuit having variable capacitance elements, negative resistance circuits, and reference voltage generation means of generating a reference voltage from a power supply voltage, and wherein a predetermined reference voltage is inputted to some terminals of the variable capacitance elements of the n pieces of variable capacitance circuit, a control voltage is inputted to the other terminals thereof, and of the variable capacitance elements of the n pieces of variable capacitance circuits, the predetermined reference voltage inputted to some terminals of the variable capacitance elements of at least two pieces of the variable capacitance circuit is different.
摘要翻译：一种具有电感电路的压控振荡器，具有可变电容元件的可变电容电路的n个（n为2个以上），负电阻电路和从电源电压生成基准电压的基准电压生成单元，其中，将预定的参考电压输入到n个可变电容电路的可变电容元件的一些端子，将一个控制电压输入到其它端子，以及n个可变电容电路的可变电容元件，输入至少两个可变电容电路的可变电容元件的一些端子的预定参考电压是不同的。

10. 发明授权

US06930562B2 Oscillation with multiple series circuits in parallel 有权
标题翻译：并联多串联电路的振荡
公开(公告)号：US06930562B2
公开(公告)日：2005-08-16
申请号：US10620203
申请日：2003-07-15
申请人： Koji Takinami , Hisashi Adachi
发明人： Koji Takinami , Hisashi Adachi
IPC分类号： H03B1/00 , H03B5/12 , H03L7/089 , H03L7/093 , H03L7/099 , H03L7/10
CPC分类号： H03L7/10 , H03B5/1215 , H03B5/1228 , H03B5/1253 , H03B5/1293 , H03B2201/0208 , H03L7/0896 , H03L7/093 , H03L7/099 , H03L2207/06
摘要： The present invention provides an oscillator or PLL circuit which can balance the characteristics of a circuit without being affected by noise from a signal line or a supply line. There is provides an oscillator comprising a resonance circuit has a first series connected circuit having coils and a power terminal, a second series connected circuit having capacitors and a varactor having directional characteristics, and a third series connected circuit having capacitors and a varactor having directional characteristics. The first, second, and third series connected circuits are connected in parallel. The varactors are connected so as to have opposite directionalities with respect to a connection side of the second and third series connected circuit. The capacities of the varactors are varied by external control. The varied capacities determine an oscillation frequency.
摘要翻译：本发明提供了一种振荡器或PLL电路，其可以平衡电路的特性而不受来自信号线或电源线的噪声的影响。提供了一种包括谐振电路的振荡器，其具有具有线圈的第一串联电路和电源端子，具有电容器的第二串联电路和具有方向特性的变容二极管，以及具有电容器和具有方向特性的变容二极管的第三串联电路。第一，第二和第三串联电路并联连接。变容二极管相对于第二和第三串联电路的连接侧具有相反的方向连接。变容二极管的容量由外部控制变化。不同的容量决定振荡频率。

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