公开(公告)号：US07457600B2

公开(公告)日：2008-11-25

申请号：US10526472

申请日：2004-06-24

申请人： Takeshi Fujii ,  Kenji Adachi ,  Hiroaki Ozeki ,  Mineyuki Iwaida

发明人： Takeshi Fujii ,  Kenji Adachi ,  Hiroaki Ozeki ,  Mineyuki Iwaida

IPC分类号： H04B7/00

CPC分类号： H03L7/099 ,  H03L7/10 ,  H03L2207/06

摘要： VCO (voltage-controlled oscillator) device used for a radio unit such as a television broadcast receiver. A VCO device oscillating in a wide band of oscillation frequency and capable of realizing low power consumption is provided. VCO circuit group 4 oscillates signals of frequencies corresponding to control voltage Vt applied to frequency control voltage terminal 8. LO signal selecting means 3 selects a required output signal from VCO circuit group 4. PLL 6 frequency-divides local signal fvco selected by LO signal selecting means 3, compares a phase thereof with a phase of a reference signal and outputs a signal converted from a phase difference. Loop filter 7 smoothes the output signal from PLL 6, outputs control voltage Vt that is a frequency control voltage and outputs the local-signal selected by signal selecting means 3 to high frequency signal processing means 1.

摘要翻译： 用于诸如电视广播接收机的无线电单元的VCO（压控振荡器）装置。 提供了在宽频带振荡频率下振荡并且能够实现低功耗的VCO器件。 VCO电路组4振荡对应于施加到频率控制电压端子8的控制电压Vt的频率的信号。 LO信号选择装置3从VCO电路组4中选择所需的输出信号。 PLL 6对由LO信号选择装置3选择的本地信号fvco进行分频，将其相位与参考信号的相位进行比较，并输出从相位差转换的信号。 环路滤波器7平滑来自PLL 6的输出信号，输出作为频率控制电压的控制电压Vt，并将由信号选择装置3选择的局部信号输出到高频信号处理装置1。

公开(公告)号：US20060128335A1

公开(公告)日：2006-06-15

申请号：US10526472

申请日：2004-06-24

申请人： Takeshi Fujii ,  Kenji Adachi ,  Hiroaki Ozeki ,  Mineyuki Iwaida

发明人： Takeshi Fujii ,  Kenji Adachi ,  Hiroaki Ozeki ,  Mineyuki Iwaida

IPC分类号： H04B1/40 ,  H04B1/06

CPC分类号： H03L7/099 ,  H03L7/10 ,  H03L2207/06

摘要： VCO (voltage-controlled oscillator) device used for a radio unit such as a television broadcast receiver. A VCO device oscillating in a wide band of oscillation frequency and capable of realizing low power consumption is provided. VCO circuit group 4 oscillates signals of frequencies corresponding to control voltage Vt applied to frequency control voltage terminal 8. LO signal selecting means 3 selects a required output signal from VCO circuit group 4. PLL 6 frequency-divides local signal fvco selected by LO signal selecting means 3, compares a phase thereof with a phase of a reference signal and outputs a signal converted from a phase difference. Loop filter 7 smoothes the output signal from PLL 6, outputs control voltage Vt that is a frequency control voltage and outputs the local-signal selected by signal selecting means 3 to high frequency signal processing means 1.

摘要翻译： 用于诸如电视广播接收机的无线电单元的VCO（压控振荡器）装置。 提供了在宽频带振荡频率下振荡并且能够实现低功耗的VCO器件。 VCO电路组4振荡对应于施加到频率控制电压端子8的控制电压Vt的频率的信号。 LO信号选择装置3从VCO电路组4中选择所需的输出信号。 PLL 6对由LO信号选择装置3选择的本地信号fvco进行分频，将其相位与参考信号的相位进行比较，并输出从相位差转换的信号。 环路滤波器7平滑来自PLL 6的输出信号，输出作为频率控制电压的控制电压Vt，并将由信号选择装置3选择的局部信号输出到高频信号处理装置1。

公开(公告)号：US08244197B2

公开(公告)日：2012-08-14

申请号：US12304084

申请日：2008-03-27

申请人： Takeshi Fujii ,  Hiroaki Ozeki ,  Mineyuki Iwaida

发明人： Takeshi Fujii ,  Hiroaki Ozeki ,  Mineyuki Iwaida

IPC分类号： H04B1/10

CPC分类号： H03H7/20 ,  H04B1/28

摘要： In an image rejection mixer, when a signal in the first radio frequency band is inputted to an input terminal, the first mixer and the second mixer convert the input signal in the first radio frequency band to a signal in the first intermediate frequency band by using the first local signal from a local signal oscillator, and a filter circuit attenuates an image interfering signal existing in the first intermediate frequency band by means of the first attenuation band. Also, when a signal in the second radio frequency band is inputted to the input terminal, the first mixer and the second mixer convert the input signal in the second radio frequency band to a signal in the second intermediate frequency band by using the second local signal from the local signal oscillator, and the filter circuit attenuates an image interfering signal existing in the second intermediate frequency band by means of the second attenuation band that is narrower than the first attenuation band.

摘要翻译： 在图像抑制混频器中，当第一无线电频带中的信号被输入到输入端时，第一混频器和第二混频器通过使用第一混频器和第二混频器将第一无线电频带中的输入信号转换为第一中频带中的信号 来自本地信号振荡器的第一本地信号，以及滤波器电路借助于第一衰减频带衰减存在于第一中频带中的图像干扰信号。 此外，当第二无线电频带中的信号被输入到输入端时，第一混频器和第二混频器通过使用第二本地信号将第二无线电频带中的输入信号转换为第二中频带中的信号 并且滤波器电路通过比第一衰减频带窄的第二衰减频带衰减存在于第二中频带中的图像干扰信号。

公开(公告)号：US20080068098A1

公开(公告)日：2008-03-20

申请号：US11629695

申请日：2006-01-30

申请人： Takeshi Fujii ,  Mineyuki Iwaida ,  Hiroaki Ozeki

发明人： Takeshi Fujii ,  Mineyuki Iwaida ,  Hiroaki Ozeki

IPC分类号： H03B21/01

CPC分类号： H04B1/3805 ,  H03B5/1215 ,  H03B5/1218 ,  H03B5/1228 ,  H03B5/1243 ,  H03B5/1262 ,  H03B5/1268 ,  H03B2201/0208 ,  H03B2201/0266

摘要： It is intended to provide a VCO apparatus having: a local oscillation signal generation circuit for outputting a local oscillation signal corresponding to a frequency signal of a tuned channel to be received, the frequency signal being included in high frequency signals received by an input terminal, and a mixing circuit for outputting a baseband signal by mixing the high frequency signal and the local oscillation signal, wherein the local oscillation signal generation circuit has an oscillator for oscillating the local oscillation signal and a frequency reduction unit for outputting a frequency of the local oscillation signal oscillated by the oscillator to the mixing circuit at a ratio of ×1/N, and the local oscillation signal frequency is set to a frequency different from a communication wireless frequency used by a mobile phone by adjusting the ratio of ×1/N.

摘要翻译： 本发明旨在提供一种VCO装置，其具有本地振荡信号生成电路，用于输出对应于要接收的调谐信道的频率信号的本地振荡信号，所述频率信号包含在由输入端子接收的高频信号中， 以及混合电路，用于通过混合高频信号和本地振荡信号来输出基带信号，其中本地振荡信号产生电路具有用于振荡本地振荡信号的振荡器和用于输出本地振荡频率的频率降低单元 信号以x1 / N的比例由振荡器振荡到混合电路，并且通过调整x1 / N的比率将本地振荡信号频率设置为与移动电话使用的通信无线频率不同的频率。

公开(公告)号：US08165550B2

公开(公告)日：2012-04-24

申请号：US12282080

申请日：2008-03-07

申请人： Takeshi Fujii ,  Yasuo Ooba ,  Mineyuki Iwaida ,  Hiroaki Ozeki

发明人： Takeshi Fujii ,  Yasuo Ooba ,  Mineyuki Iwaida ,  Hiroaki Ozeki

IPC分类号： H04B1/06 ,  H04B7/00

CPC分类号： H03L7/10 ,  H03B5/1215 ,  H03B5/1231 ,  H03B5/1265 ,  H03B2201/0208 ,  H03B2201/025 ,  H03J2200/10 ,  H03L7/087 ,  H03L7/099 ,  H03L7/18 ,  H03L2207/06

摘要： A broad oscillation frequency range and good phase noise characteristic are achievable simultaneously by an oscillation circuit and a resonance circuit connected to the oscillation circuit. The resonance circuit includes an inductor element connected to the oscillation circuit, a first variable capacitance section connected to the inductor element, and a second variable capacitance section connected in parallel to the first variable capacitance section. The first variable capacitance section includes a first variable capacitive element connected to the inductor element, and a second variable capacitive element connected in parallel to the first variable capacitive element. The first variable capacitive element changes its capacity value based on a control voltage and a first reference voltage. The second variable capacitive element changes its capacity value based on the control voltage and a second reference voltage. The first reference voltage and the second reference voltage are controlled based on the capacity value of the second variable capacitance section.

摘要翻译： 通过振荡电路和连接到振荡电路的谐振电路同时实现宽振荡频率范围和良好的相位噪声特性。 谐振电路包括连接到振荡电路的电感器元件，连接到电感器元件的第一可变电容部分和与第一可变电容部分并联连接的第二可变电容部分。 第一可变电容部分包括连接到电感器元件的第一可变电容元件和与第一可变电容元件并联连接的第二可变电容元件。 第一可变电容元件基于控制电压和第一参考电压改变其容量值。 第二可变电容元件根据控制电压和第二参考电压改变其容量值。 基于第二可变电容部的容量值来控制第一基准电压和第二基准电压。

公开(公告)号：US20100267352A1

公开(公告)日：2010-10-21

申请号：US12282080

申请日：2008-03-07

申请人： Takeshi Fujii ,  Yasuo Ooba ,  Mineyuki Iwaida ,  Hiroaki Ozeki

发明人： Takeshi Fujii ,  Yasuo Ooba ,  Mineyuki Iwaida ,  Hiroaki Ozeki

IPC分类号： H03B5/12 ,  H04B1/06

CPC分类号： H03L7/10 ,  H03B5/1215 ,  H03B5/1231 ,  H03B5/1265 ,  H03B2201/0208 ,  H03B2201/025 ,  H03J2200/10 ,  H03L7/087 ,  H03L7/099 ,  H03L7/18 ,  H03L2207/06

摘要： A broad oscillation frequency range and good phase noise characteristic are achievable simultaneously by an oscillation circuit and a resonance circuit connected to the oscillation circuit. The resonance circuit includes an inductor element connected to the oscillation circuit, a first variable capacitance section connected to the inductor element, and a second variable capacitance section connected in parallel to the first variable capacitance section. The first variable capacitance section includes a first variable capacitive element connected to the inductor element, and a second variable capacitive element connected in parallel to the first variable capacitive element. The first variable capacitive element changes its capacity value based on a control voltage and a first reference voltage. The second variable capacitive element changes its capacity value based on the control voltage and a second reference voltage. The first reference voltage and the second reference voltage are controlled based on the capacity value of the second variable capacitance section.

摘要翻译： 通过振荡电路和连接到振荡电路的谐振电路同时实现宽振荡频率范围和良好的相位噪声特性。 谐振电路包括连接到振荡电路的电感器元件，连接到电感器元件的第一可变电容部分和与第一可变电容部分并联连接的第二可变电容部分。 第一可变电容部分包括连接到电感器元件的第一可变电容元件和与第一可变电容元件并联连接的第二可变电容元件。 第一可变电容元件基于控制电压和第一参考电压改变其容量值。 第二可变电容元件根据控制电压和第二参考电压改变其容量值。 基于第二可变电容部的容量值来控制第一基准电压和第二基准电压。

公开(公告)号：US20100178890A1

公开(公告)日：2010-07-15

申请号：US12304084

申请日：2008-03-27

申请人： Takeshi Fujii ,  Hiroaki Ozeki ,  Mineyuki Iwaida

发明人： Takeshi Fujii ,  Hiroaki Ozeki ,  Mineyuki Iwaida

IPC分类号： H04B1/16

CPC分类号： H03H7/20 ,  H04B1/28

摘要： In an image rejection mixer, when a signal in the first radio frequency band is inputted to an input terminal, the first mixer and the second mixer convert the input signal in the first radio frequency band to a signal in the first intermediate frequency band by using the first local signal from a local signal oscillator, and a filter circuit attenuates an image interfering signal existing in the first intermediate frequency band by means of the first attenuation band. Also, when a signal in the second radio frequency band is inputted to the input terminal, the first mixer and the second mixer convert the input signal in the second radio frequency band to a signal in the second intermediate frequency band by using the second local signal from the local signal oscillator, and the filter circuit attenuates an image interfering signal existing in the second intermediate frequency band by means of the second attenuation band that is narrower than the first attenuation band.

摘要翻译： 在图像抑制混频器中，当第一无线电频带中的信号被输入到输入端时，第一混频器和第二混频器通过使用第一混频器和第二混频器将第一无线电频带中的输入信号转换为第一中频带中的信号 来自本地信号振荡器的第一本地信号，以及滤波器电路借助于第一衰减频带衰减存在于第一中频带中的图像干扰信号。 此外，当第二无线电频带中的信号被输入到输入端时，第一混频器和第二混频器通过使用第二本地信号将第二无线电频带中的输入信号转换为第二中频带中的信号 并且滤波器电路通过比第一衰减频带窄的第二衰减频带衰减存在于第二中频带中的图像干扰信号。

公开(公告)号：US07098967B2

公开(公告)日：2006-08-29

申请号：US10247749

申请日：2002-09-20

申请人： Ippei Kanno ,  Hiroaki Ozeki ,  Yasuo Oba ,  Akira Fujishima ,  Mineyuki Iwaida

发明人： Ippei Kanno ,  Hiroaki Ozeki ,  Yasuo Oba ,  Akira Fujishima ,  Mineyuki Iwaida

IPC分类号： H04N5/455

CPC分类号： H04B1/1027 ,  H03D7/165 ,  H03J1/005 ,  H04N5/4401 ,  H04N5/455

摘要： Frequency conversion into a first intermediate frequency which is higher than a received frequency band is performed for a received signal by using a mixer and a PLL. Next, an output of the mixer is frequency converted into a second intermediate frequency of a base band by using a quadrature mixer formed by mixers and a phase shifter. At this time, a frequency of the local oscillation signal of a PLL supplied to the quadrature mixer is controlled so as to be switched, depending on a position of the received segment, between a frequency which is higher than the first intermediate frequency and a frequency which is lower than the same.

摘要翻译： 通过使用混频器和PLL对接收信号执行高于接收频带的第一中频的频率转换。 接下来，通过使用由混频器和移相器形成的正交混频器将混频器的输出频率转换为基带的第二中频。 此时，提供给正交混频器的PLL的本地振荡信号的频率被控制，以便根据接收段的位置在高于第一中频的频率和频率之间切换 低于相同。

公开(公告)号：US07545187B2

公开(公告)日：2009-06-09

申请号：US12030480

申请日：2008-02-13

申请人： Mineyuki Iwaida ,  Takeshi Fujii

发明人： Mineyuki Iwaida ,  Takeshi Fujii

IPC分类号： H03L7/06

CPC分类号： H03L7/087 ,  H03L7/085 ,  H03L7/10 ,  H03L7/107 ,  H03L7/193

摘要： A PLL circuit according to the present invention includes: a voltage controlled oscillator 10; a frequency divider 30 that divides an oscillation signal of the voltage controlled oscillator 10 and outputs a divided oscillation signal; a first phase comparator 40 that outputs a phase difference between the divided oscillation signal of the frequency divider 30 and a reference signal; a charge pump 60 that converts the output signal of the first phase comparator 40 into a signal for controlling the voltage controlled oscillator 10; a filter that allows a DC component of the output signal of the charge pump 60 to pass therethrough and outputs a voltage to the voltage controlled oscillator 10; a second phase comparator 90 that averages the phase difference between the divided oscillation signal of the frequency divider 30 and the reference signal with respect to time; and a current control circuit 100 that controls an operating current of the frequency divider 30 based on the phase difference averaged with respect to time by the second phase comparator 90. With this configuration, it is possible to provide a PLL circuit that achieves low power consumption and covers a wide range of oscillation frequencies.

摘要翻译： 根据本发明的PLL电路包括：压控振荡器10; 分压器30，其分压压控振荡器10的振荡信号，并输出分频振荡信号; 第一相位比较器40，输出分频器30的分频振荡信号与参考信号之间的相位差; 将第一相位比较器40的输出信号转换成用于控制压控振荡器10的信号的电荷泵60; 使得电荷泵60的输出信号的直流分量通过的滤波器，并将电压输出到压控振荡器10; 第二相位比较器90，其对分频器30的分频振荡信号和参考信号之间的时间相位差进行平均; 以及电流控制电路100，其基于由第二相位比较器90相对于时间平均的相位差来控制分频器30的工作电流。利用该配置，可以提供实现低功耗的PLL​​电路 并且覆盖宽范围的振荡频率。

公开(公告)号：US07982551B2

公开(公告)日：2011-07-19

申请号：US12294177

申请日：2007-03-23

申请人： Mineyuki Iwaida ,  Yasuo Oba ,  Takeshi Fujii

发明人： Mineyuki Iwaida ,  Yasuo Oba ,  Takeshi Fujii

IPC分类号： H03L1/00

CPC分类号： H03L1/023 ,  H03L7/099 ,  H03L7/113 ,  H03L7/18

摘要： A VCO circuit includes a temperature detector circuit, a voltage generator circuit, a switch, a resonance circuit and an oscillator. The temperature detector detects a temperature, and the voltage generator circuit generates a voltage for coarse adjustment corresponding to the detected temperature and outputs the same voltage. The switch selects one of a DC voltage for fine adjustment and the voltage for coarse adjustment. The resonance circuit includes a varactor diode having a capacitance value adjusted based on the voltage selected by the switch, capacitors and an inductor, and has a predetermined resonance frequency. The oscillator generates an oscillation signal having an oscillation frequency corresponding to the resonance frequency by using the resonance circuit and outputs the same signal.

摘要翻译： VCO电路包括温度检测器电路，电压发生器电路，开关，谐振电路和振荡器。 温度检测器检测温度，并且电压发生器电路根据检测到的温度产生用于粗调的电压并输出相同的电压。 开关选择直流电压之一进行微调和粗调电压。 谐振电路包括基于由开关选择的电压，电容器和电感器调整的电容值的变容二极管，并具有预定的谐振频率。 振荡器通过使用谐振电路产生具有与谐振频率对应的振荡频率的振荡信号，并输出相同的信号。