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1. 发明授权

US07973609B2 Digitally-controlled oscillator, frequency synthesizer and radio communication device 有权
标题翻译：数字控制振荡器，频率合成器和无线电通信设备
公开(公告)号：US07973609B2
公开(公告)日：2011-07-05
申请号：US12536120
申请日：2009-08-05
申请人： Atsushi Ohara , Shinichiro Uemura , Hisashi Adachi
发明人： Atsushi Ohara , Shinichiro Uemura , Hisashi Adachi
IPC分类号： H03B27/00
CPC分类号： H03L7/18 , H03L7/085 , H03L7/093 , H03L7/099 , H03L7/0995 , H03L7/10 , H03L2207/06 , H03L2207/50
摘要： A frequency synthesizer includes a digitally-controlled oscillator and an oscillation frequency control unit. The digitally-controlled oscillator includes a loop-shaped transmission line path having an odd number of parallel portions in each of which two conductors are arranged in parallel to each other with a space therebetween, and an odd number of intersection portions in each of which two conductors intersect spatially, an active circuit coupled between the two conductors, and a first variable capacitance unit and a second variable capacitance unit. The oscillation frequency control unit includes a ΣΔ modulation circuit for subjecting to ΣΔ modulation a first control signal for switching a high capacitance state and a low capacitance state of a first variable capacitance element included in the first variable capacitance unit.
摘要翻译：频率合成器包括数字控制振荡器和振荡频率控制单元。数字控制振荡器包括具有奇数个并行部分的环形传输线路径，其中每个平行部分中的两个导体彼此平行布置，并且其间具有空格，奇数个交点部分导体在空间上相交，耦合在两个导体之间的有源电路，以及第一可变电容单元和第二可变电容单元。振荡频率控制单元包括＆Sgr＆amp; Dgr; 调制电路用于＆Sgr＆amp; Dgr; 调制用于切换包括在第一可变电容单元中的第一可变电容元件的高电容状态和低电容状态的第一控制信号。

2. 发明申请

US20090002088A1 DIGITAL CONTROLLED OSCILLATOR, FREQUENCY SYNTHESIZER, RADIO COMMUNICATION APPARATUS USING THE SAME, AND CONTROL METHOD FOR THE SAME 有权
标题翻译：数字控制振荡器，频率合成器，使用其的无线电通信装置及其控制方法
公开(公告)号：US20090002088A1
公开(公告)日：2009-01-01
申请号：US11968909
申请日：2008-01-03
申请人： Atsushi Ohara , Hisashi Adachi
发明人： Atsushi Ohara , Hisashi Adachi
IPC分类号： H03L7/00
CPC分类号： H03L7/0991 , H03B5/1215 , H03B5/1228 , H03B5/1243 , H03B5/1265 , H03C3/20
摘要： The digital controlled oscillator includes a variable capacitance section having a first capacitor array of a plurality of first variable capacitors and a second capacitor array of a plurality of second variable capacitors, and generates a signal having an oscillation frequency corresponding to the capacitance value of the variable capacitance section. The first capacitance change amount in the individual first variable capacitors is a value obtained by multiplying the second capacitance change amount in the individual second variable capacitors by an integer equal to or more than 2, and the number of second variable capacitors is equal to or more than a value obtained by subtracting 1 from the integer equal to or more than 2.
摘要翻译：数字控制振荡器包括具有多个第一可变电容器的第一电容器阵列和多个第二可变电容器的第二电容器阵列的可变电容部分，并且产生具有与变量的电容值相对应的振荡频率的信号电容部分。各个第一可变电容器中的第一电容变化量是通过将各个第二可变电容器中的第二电容变化量乘以等于或大于2的整数而获得的值，并且第二可变电容器的数量等于或等于比从等于或大于2的整数减去1得到的值。

3. 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。

4. 发明授权

US07696830B2 Digital controlled oscillator, frequency synthesizer, radio communication apparatus using the same, and control method for the same 有权
标题翻译：数字控制振荡器，频率合成器，使用其的无线电通信装置及其控制方法
公开(公告)号：US07696830B2
公开(公告)日：2010-04-13
申请号：US11968909
申请日：2008-01-03
申请人： Atsushi Ohara , Hisashi Adachi
发明人： Atsushi Ohara , Hisashi Adachi
IPC分类号： H03B5/12 , H03L7/085 , H03L7/099
CPC分类号： H03L7/0991 , H03B5/1215 , H03B5/1228 , H03B5/1243 , H03B5/1265 , H03C3/20
摘要： The digital controlled oscillator includes a variable capacitance section having a first capacitor array of a plurality of first variable capacitors and a second capacitor array of a plurality of second variable capacitors, and generates a signal having an oscillation frequency corresponding to the capacitance value of the variable capacitance section. The first capacitance change amount in the individual first variable capacitors is a value obtained by multiplying the second capacitance change amount in the individual second variable capacitors by an integer equal to or more than 2, and the number of second variable capacitors is equal to or more than a value obtained by subtracting 1 from the integer equal to or more than 2.
摘要翻译：数字控制振荡器包括具有多个第一可变电容器的第一电容器阵列和多个第二可变电容器的第二电容器阵列的可变电容部分，并且产生具有与变量的电容值对应的振荡频率的信号电容部分。各个第一可变电容器中的第一电容变化量是通过将各个第二可变电容器中的第二电容变化量乘以等于或大于2的整数而获得的值，并且第二可变电容器的数量等于或等于比从等于或大于2的整数减去1得到的值。

5. 发明申请

US20100066416A1 DIGITALLY-CONTROLLED OSCILLATOR, FREQUENCY SYNTHESIZER AND RADIO COMMUNICATION DEVICE 有权
标题翻译：数字控制振荡器，频率合成器和无线电通信设备
公开(公告)号：US20100066416A1
公开(公告)日：2010-03-18
申请号：US12536120
申请日：2009-08-05
申请人： Atsushi OHARA , Shinichiro Uemura , Hisashi Adachi
发明人： Atsushi OHARA , Shinichiro Uemura , Hisashi Adachi
IPC分类号： H03L7/00
CPC分类号： H03L7/18 , H03L7/085 , H03L7/093 , H03L7/099 , H03L7/0995 , H03L7/10 , H03L2207/06 , H03L2207/50
摘要： A frequency synthesizer includes a digitally-controlled oscillator and an oscillation frequency control unit. The digitally-controlled oscillator includes a loop-shaped transmission line path having an odd number of parallel portions in each of which two conductors are arranged in parallel to each other with a space therebetween, and an odd number of intersection portions in each of which two conductors intersect spatially, an active circuit coupled between the two conductors, and a first variable capacitance unit and a second variable capacitance unit. The oscillation frequency control unit includes a ΣΔ modulation circuit for subjecting to ΣΔ modulation a first control signal for switching a high capacitance state and a low capacitance state of a first variable capacitance element included in the first variable capacitance unit.
摘要翻译：频率合成器包括数字控制振荡器和振荡频率控制单元。数字控制振荡器包括具有奇数个并行部分的环形传输线路径，其中每个平行部分中的两个导体彼此平行布置，并且其间具有空格，奇数个交点部分导体在空间上相交，耦合在两个导体之间的有源电路，以及第一可变电容单元和第二可变电容单元。振荡频率控制单元包括＆Sgr＆amp; Dgr; 调制电路用于＆Sgr＆amp; Dgr; 调制用于切换包括在第一可变电容单元中的第一可变电容元件的高电容状态和低电容状态的第一控制信号。

6. 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。

7. 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。

8. 发明授权

US07817725B2 Data converter device and data conversion method, and transmitter circuit, communications device and electronic device using the same 有权
标题翻译：数据转换装置和数据转换方法，以及发射机电路，通信装置和使用该装置的电子装置
公开(公告)号：US07817725B2
公开(公告)日：2010-10-19
申请号：US11074677
申请日：2005-03-09
申请人： Toru Matsuura , Hisashi Adachi
发明人： Toru Matsuura , Hisashi Adachi
IPC分类号： H04B14/06
CPC分类号： H03M3/368 , H03M3/458
摘要： The present invention aims to provide a transmitter circuit that is capable of suppressing quantization noise and operating with a high efficiency, a data converter section 13 and a data conversion method for use therein, and a communications device using the same. The data converter section 13 of the present invention performs a predetermined data conversion operation on an input signal. The data converter section 13 includes: a signal processing section 133 for discretizing the input signal to produce a signal having a lower resolution magnitude-wise than that of the input signal; a subtractor section 134 for subtracting the input signal from the signal having a lower resolution to extract quantization noise; a filter 135 for extracting quantization noise near an intended wave frequency; and a subtractor section 136 for removing the quantization noise near the intended wave frequency from the signal having a lower resolution.
摘要翻译：本发明旨在提供一种能够抑制量化噪声和高效率操作的发射机电路，数据转换器部分13及其中使用的数据转换方法，以及使用该发射机电路的通信装置。本发明的数据转换器部分13对输入信号执行预定的数据转换操作。数据转换器部分13包括：信号处理部分133，用于离散输入信号以产生具有比输入信号幅度更小的分辨率的信号; 减法器部分134，用于从具有较低分辨率的信号中减去输入信号以提取量化噪声; 用于提取预期波频附近的量化噪声的滤波器135; 以及用于从具有较低分辨率的信号中去除预期波频率附近的量化噪声的减法器部分136。

9. 发明授权

US07725082B2 Radio communication apparatus, radio communication method, antenna apparatus and first duplexer 失效
标题翻译：无线电通信装置，无线电通信方法，天线装置和第一双工器
公开(公告)号：US07725082B2
公开(公告)日：2010-05-25
申请号：US11766389
申请日：2007-06-21
申请人： Toshifumi Nakatani , Atsushi Yamamoto , Hisashi Adachi
发明人： Toshifumi Nakatani , Atsushi Yamamoto , Hisashi Adachi
IPC分类号： H04B1/44 , H04B1/46
CPC分类号： H04B1/525
摘要： Radio communication apparatus comprising an antenna, a transmitting circuit of outputting a transmitting signal in a first frequency band. A duplexer connected to the antenna and having a single-phase input terminal and a balanced output terminal, conveying the transmitting signal inputted to the single-phase input terminal to the antenna. The duplexer outputs a receiving signal in a second frequency band different from the first frequency band received from the antenna substantially as a differential signal from the balanced output terminal. A receiving circuit connected to the balanced output terminal and having a circuit in which a gain of a signal of a differential component is higher than that of a signal of an in-phase component, or a loss of the signal of the differential component is lower than that of the signal of the in-phase component.
摘要翻译：无线通信装置，包括：天线，输出第一频带的发送信号的发送电路。连接到天线并具有单相输入端子和平衡输出端子的双工器，将输入到单相输入端子的发送信号传送到天线。双工器基本上作为来自平衡输出端子的差分信号，输出与从天线接收的第一频带不同的第二频带中的接收信号。连接到平衡输出端子并具有差分分量的信号的增益高于同相分量的信号的增益或差分分量的信号的损失的电路的接收电路较低比同相成分的信号。

10. 发明申请

US20090302918A1 CLOCK SIGNAL GENERATION APPARATUS 有权
标题翻译：时钟信号发生装置
公开(公告)号：US20090302918A1
公开(公告)日：2009-12-10
申请号：US12471757
申请日：2009-05-26
申请人： Masahiko Sagisaka , Hisashi Adachi , Taiji Akizuki
发明人： Masahiko Sagisaka , Hisashi Adachi , Taiji Akizuki
IPC分类号： H03K3/00 , H03H11/26
CPC分类号： H03H11/265 , H03K5/1515 , H03K2005/00026 , H03K2005/00097
摘要： A clock signal generation apparatus containing variable delay devices for varying the delay time of two-phase clock signals used in a load circuit that uses non-overlap clock signals; a non-overlap detector for detecting a non-overlap time in the H-level zones of the two-phase clock signals and outputting a detection signal corresponding to the non-overlap time; and a control signal generation section for generating a control signal that is used to control the variable delay devices on the basis of the detection signal from the non-overlap detector, and capable of securely generating the two-phase clock signals having an optimal non-overlap time while absorbing fluctuations due to temperature characteristics, power supply voltage characteristics and individual differences in components.
摘要翻译：一种时钟信号发生装置，包括用于改变在使用非重叠时钟信号的负载电路中使用的两相时钟信号的延迟时间的可变延迟装置; 一个非重叠检测器，用于检测两相时钟信号的H电平区中的非重叠时间，并输出与非重叠时间对应的检测信号; 以及控制信号生成部，其根据来自所述非重叠检测器的检测信号生成用于控制所述可变延迟器件的控制信号，并能够可靠地生成具有最优非可变延迟器件的两相时钟信号，重叠时间，同时吸收由于温度特性，电源电压特性和组件个体差异引起的波动。

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