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81. 发明授权

US06917241B2 Amplifier circuit, transmission device, amplification method, and transmission method 有权
标题翻译：放大电路，传输装置，放大方法及传输方式
公开(公告)号：US06917241B2
公开(公告)日：2005-07-12
申请号：US10435784
申请日：2003-05-12
申请人： Toru Matsuura , Hisashi Adachi
发明人： Toru Matsuura , Hisashi Adachi
IPC分类号： H03F1/02 , H03F3/38
CPC分类号： H03F1/0222 , H03F2200/331
摘要： An amplifier circuit has: a delta-sigma modulator which delta-sigma modulates a signal; and an amplifier which is connected to an output of the delta-sigma modulator. In the amplifier circuit, an output voltage of the delta-sigma modulator is controlled in accordance with an output power of the amplifier. When the output power of the amplifier is reduced, the output voltage of the delta-sigma modulator is lowered.
摘要翻译：放大器电路具有：Δ-Σ调制器，Δ-Σ调制信号; 以及连接到Δ-Σ调制器的输出的放大器。在放大器电路中，根据放大器的输出功率来控制Δ-Σ调制器的输出电压。当放大器的输出功率减小时，Δ-Σ调制器的输出电压降低。

82. 发明申请

US20050110572A1 Amplifier; and transmitter and communication device incorporating the same 有权
标题翻译：放大器; 以及包括其的发射机和通信设备
公开(公告)号：US20050110572A1
公开(公告)日：2005-05-26
申请号：US10988499
申请日：2004-11-16
申请人： Shigeru Morimoto , Hisashi Adachi
发明人： Shigeru Morimoto , Hisashi Adachi
IPC分类号： H03F3/19 , H03F1/34
CPC分类号： H03F3/19 , H03F2200/138
摘要： The present invention provides an amplifier for amplifying a high-frequency signal and outputting an amplified signal. The amplifier includes: an amplification element which is a bipolar transistor or a field-effect transistor; and an inductor connected between a base and a collector or between a gate and a drain of the amplification element. The inductance of the inductor is chosen so that, within a predetermined frequency range, a parallel resonance occurs with a parasitic capacitor of the amplification element and an intrinsic capacitor of the amplification element, the intrinsic capacitor being a base-collector capacitance or a gate-drain capacitance.
摘要翻译：本发明提供一种用于放大高频信号并输出放大信号的放大器。放大器包括：放大元件，其是双极晶体管或场效应晶体管; 以及连接在基极和集电极之间或放大元件的栅极和漏极之间的电感器。选择电感器的电感，使得在预定频率范围内，放大元件的寄生电容器和放大元件的本征电容器发生并联谐振，本征电容器是基极集电极电容或栅极 - 漏电容。

83. 发明授权

US06826418B2 Radio circuit and control method of radio circuit 失效
标题翻译：无线电电路的无线电路和控制方法
公开(公告)号：US06826418B2
公开(公告)日：2004-11-30
申请号：US09972240
申请日：2001-10-09
申请人： Hisashi Adachi , Masanori Iida , Hiroyuki Asakura
发明人： Hisashi Adachi , Masanori Iida , Hiroyuki Asakura
IPC分类号： H04B138
CPC分类号： H04B1/109 , H04W52/0229 , Y02D70/40
摘要： The invention provides a radio circuit realizing a desired receiving characteristic even when a strong-level interfering wave is received and operating with small power when no interfering wave is received. The radio circuit comprises a receiving circuit for selecting a signal having a desired frequency from received signals and demodulating the signal, an input-power detector for detecting power P1 of the receiving circuit, a received-power detector for detecting power P2 of a signal selected by the receiving circuit, and a reception control circuit for controlling the receiving circuit. The reception control circuit controls the receiving circuit at a low distortion by increasing the power consumption of a circuit included in the receiving circuit and thereby expanding the linear operation range when the power P1 detected by the input-power detector is larger than a predetermined value t1 and the power P2 detected by the input-power detector is smaller than a predetermined value t3.
摘要翻译：本发明提供了即使当接收到强电平干扰波并且当没有接收到干扰波时以小功率运行时，也实现期望的接收特性的无线电电路。无线电电路包括一个接收电路，用于从接收的信号中选择具有期望频率的信号并解调该信号;一个用于检测接收电路的功率P1的输入功率检测器，一个用于检测所选信号的功率P2的接收功率检测器由接收电路和用于控制接收电路的接收控制电路。接收控制电路通过增加接收电路中包括的电路的功耗来控制低失真的接收电路，从而当由输入功率检测器检测的功率P1大于预定值t1时扩大线性运行范围并且由输入功率检测器检测的功率P2小于预定值t3。

84. 发明授权

US06658216B1 Voltage controlled oscillator, FM signal optical transmitter, FM signal optical receiver and FM signal optical transmission system 失效
标题翻译：压控振荡器，FM信号光发射机，FM信号光接收机和FM信号光传输系统
公开(公告)号：US06658216B1
公开(公告)日：2003-12-02
申请号：US09531341
申请日：2000-03-20
申请人： Masanori Iida , Hisashi Adachi , Hiroyuki Asakura
发明人： Masanori Iida , Hisashi Adachi , Hiroyuki Asakura
IPC分类号： H04B1012
CPC分类号： H04B10/516 , H03D9/00 , H04B10/50 , H04B10/504 , H04B10/548 , H04B2210/517
摘要： Plural subcarrier-multiplexed AM signals 30 are input and narrow-band-FM-modulated by a voltage controlled oscillator 4 including the fundamental carrier wave and higher-order harmonics as the output, and the FM carrier wave component of the higher-order harmonics of the fundamental carrier wave is selectively taken out by a band-rejection filter 5, shifted to the lower frequency side by a frequency converter 7, converted into an optical signal by an electric/optic converter 3 and transmitted.
摘要翻译：多个副载波复用的AM信号30由包括基波和高次谐波的压控振荡器4作为输出进行输入和窄带FM调制，高次谐波的FM载波分量基带载波被频率转换器7的带阻滤波器5选择性地输出到低频侧，由电/光转换器3转换成光信号并发送。

85. 发明授权

US06563387B2 Method and apparatus for synthesizing high-frequency signals for wireless communications 失效
标题翻译：用于合成用于无线通信的高频信号的方法和装置
公开(公告)号：US06563387B2
公开(公告)日：2003-05-13
申请号：US09867348
申请日：2001-05-29
申请人： Shunsuke Hirano , Ryoichi Yamada , Yasunori Miyahara , Yukio Hiraoka , Hisashi Adachi
发明人： Shunsuke Hirano , Ryoichi Yamada , Yasunori Miyahara , Yukio Hiraoka , Hisashi Adachi
IPC分类号： H03L7087
CPC分类号： H03L7/0898 , H03L7/087 , H03L7/099 , H03L7/107 , H03L7/113 , H03L7/199
摘要： A frequency synthesizer is provided with a prescaler 2 and a counter 3, which output a signal having a frequency generated by frequency-dividing an output signal of a VCO 1; a reference frequency divider 5 for frequency-dividing a frequency of a reference signal of a reference signal source 4; a frequency adjusting meas 9 operated in such that a frequency error between the output signal of the counter 5 and the output signal of the reference frequency divider 5 is detected, and in response to this detection result, such a signal is outputted by which either a capacitor value or an inductor value employed in a resonant circuit of the VCO 1 is switched; and also a bias control means for applying an arbitrary voltage V1 to a control voltage terminal of the VCO 1 so as to bring an output signal of a charge pump 7 into a high impedance state when the frequency adjusting means 9 is operated. Since the resonant frequency of the resonant circuit is changed in response to an actual oscillation frequency of the VCO 1, the frequency synthesizer can be phase-locked at a desirable frequency. Also, since the VCO can be manufactured in the IC form, the compact VCO can be made in low cost.
摘要翻译：频率合成器设置有预分频器2和计数器3，该预分频器2和计数器3输出具有通过对VCO 1的输出信号进行分频而产生的频率的信号; 用于对参考信号源4的参考信号的频率进行分频的参考分频器5; 以使得计数器5的输出信号与参考分频器5的输出信号之间的频率误差被检测到的频率调整装置9被执行，并且响应于该检测结果，输出这样一个信号：在VCO 1的谐振电路中使用的电容器值或电感值被切换; 以及偏置控制装置，用于将任意电压V1施加到VCO1的控制电压端，以便当频率调节装置9工作时使电荷泵7的输出信号变为高阻抗状态。由于谐振电路的谐振频率响应于VCO1的实际振荡频率而改变，所以频率合成器可以以期望的频率锁相。此外，由于可以以IC形式制造VCO，所以可以以低成本制造紧凑型VCO。

86. 发明授权

US5691668A Feedforward amplifier 失效
标题翻译：前馈放大器
公开(公告)号：US5691668A
公开(公告)日：1997-11-25
申请号：US599799
申请日：1996-02-12
申请人： Yoshishige Yoshikawa , Hiroaki Kosugi , Hisashi Adachi , Kazuo Nagao , Shinichi Kugou
发明人： Yoshishige Yoshikawa , Hiroaki Kosugi , Hisashi Adachi , Kazuo Nagao , Shinichi Kugou
IPC分类号： H03F1/32 , H03F1/42 , H04B15/00
CPC分类号： H03F1/3235 , H03F2201/3212 , H03F2201/3218
摘要： A feedforward amplifier comprises a first feedforward circuit and a second feedforward circuit. The first feedforward circuit detects the distortion component of the output of a main amplifier through a first distortion detection circuit, and inserts the detected distortion component into the output signal of the main amplifier in a first distortion cancellation circuit to cancel the distortion component. The second feedforward circuit detects the distortion component of the output of the first feedforward circuit through a second distortion detection circuit, and inserts the detected distortion component into the output signal of the first feedforward circuit in a second distortion cancellation circuit, to perform distortion cancellation over a wide range of frequencies.
摘要翻译：前馈放大器包括第一前馈电路和第二前馈电路。第一前馈电路通过第一失真检测电路检测主放大器的输出的失真分量，并将检测到的失真分量插入到第一失真消除电路中的主放大器的输出信号中，以消除失真分量。第二前馈电路通过第二失真检测电路检测第一前馈电路的输出的失真分量，并将检测到的失真分量插入到第二失真消除电路中的第一前馈电路的输出信号中，以执行失真消除频率范围很广。

87. 发明授权

US07925226B2 Transmission circuit 有权
标题翻译：传输电路
公开(公告)号：US07925226B2
公开(公告)日：2011-04-12
申请号：US12000082
申请日：2007-12-07
申请人： Toru Matsuura , Hisashi Adachi
发明人： Toru Matsuura , Hisashi Adachi
IPC分类号： H04B1/02
CPC分类号： H04L27/361
摘要： A transmission circuit capable of transmitting a modulated wave signal using polar modulation in a broad band and with low power consumption is provided. The transmission circuit generates an amplitude signal and a phase signal based on data to be transmitted, and separates the amplitude signal into a low-frequency amplitude signal and a high-frequency amplitude signal. The transmission circuit amplitude-modulates the phase signal in a broad band using the high-frequency amplitude signal in a high-frequency voltage control section 104 and an amplitude modulation section 105 and amplitude-modulates the phase signal into low power consumption using the low-frequency amplitude signal in a low-frequency voltage control section 106 and amplitude modulation section 107.
摘要翻译：提供了能够以宽频带和低功耗的极性调制来发送调制波信号的发送电路。发送电路基于要发送的数据生成振幅信号和相位信号，并将振幅信号分离为低频振幅信号和高频振幅信号。传输电路使用高频电压控制部分104和幅度调制部分105中的高频振幅信号对宽带中的相位信号进行幅度调制，并且使用低频电压控制部分104和幅度调制部分105将相位信号幅度调制成低功耗。频率振幅信号在低频电压控制部106和振幅调制部107中。

88. 发明授权

US07876170B2 Frequency modulator, frequency modulating method, and wireless circuit 有权
标题翻译：频率调制器，频率调制方法和无线电路
公开(公告)号：US07876170B2
公开(公告)日：2011-01-25
申请号：US11790017
申请日：2007-04-23
申请人： Hisashi Adachi , Makoto Sakakura
发明人： Hisashi Adachi , Makoto Sakakura
IPC分类号： H03C3/06
CPC分类号： H03C3/0966 , H03C3/0925 , H03C3/0933 , H03C3/0941 , H03C3/095 , H03C3/0958 , H03L7/1976 , H03M7/3022 , H03M7/3037 , H03M7/304 , H04L27/12
摘要： A voltage controlled oscillator 1, a variable frequency divider 2, a phase comparator 3, and a loop filter 4 form a Phase Locked Loop (PLL). A sigma-delta modulator 5 sigma-delta modulates data obtained by adding a fractional part M2 of the frequency division factor data with modulation data X by using an output signal of the variable frequency divider 2 as a clock. An output signal of the sigma-delta modulator 5 is added to an integral part M1 of the frequency division factor data, and the resultant data becomes effective frequency division factor data 13 of the variable frequency divider 2. An output signal of the sigma-delta modulator 5 also becomes control data 14 after passing through a D/A converter 6, a low-pass filter 7, and an amplitude adjustment circuit 8. The control data 14 is inputted into a frequency modulation terminal of the voltage controlled oscillator 1. Therefore, it is possible to provide a frequency modulator that can use a reference signal source having no frequency modulation function, and perform modulation over a wide range of frequencies based on a digital modulation signal.
摘要翻译：压控振荡器1，可变分频器2，相位比较器3和环路滤波器4形成锁相环（PLL）。 Σ-Δ调制器5σ-Δ调制通过使用可变分频器2的输出信号作为时钟将分频因子数据的分数部分M2与调制数据X相加获得的数据。 Σ-Δ调制器5的输出信号被加到分频因子数据的整数部分M1上，结果数据成为可变分频器2的有效分频系数数据13.Σ-Δ调制器5的输出信号调制器5在通过D / A转换器6，低通滤波器7和幅度调整电路8之后也成为控制数据14.控制数据14被输入到压控振荡器1的调频端。因此，可以提供一种可以使用不具有频率调制功能的参考信号源的频率调制器，并且可以基于数字调制信号在宽范围的频率上进行调制。

89. 发明授权

US07688156B2 Polar modulation transmission circuit and communication device 有权
标题翻译：极性调制传输电路和通信设备
公开(公告)号：US07688156B2
公开(公告)日：2010-03-30
申请号：US11887483
申请日：2006-04-26
申请人： Toru Matsuura , Hisashi Adachi
发明人： Toru Matsuura , Hisashi Adachi
IPC分类号： H04B1/02 , H03C3/09
CPC分类号： H04L27/361 , H04L27/368
摘要： A transmission circuit for outputting transmission signals with a low distortion and a high efficiency over a wide range of output power is provided. A signal generation section (11) generates an amplitude signal and a phase signal. An angle modulation section (12) performs angle modulation on the phase signal and outputs an angle-modulated signal. A regulator (14) receives the amplitude signal via a variable gain amplification section (18) and supplies a voltage controlled based on the magnitude of the amplitude signal to the amplitude modulation section (15). The amplitude modulation section (15) performs amplitude modulation on the angle-modulated signal and outputs a modulated signal to the variable attenuation section (16). When the value of power information is smaller than a predetermined threshold value, the control section (19) increases the gain of the variable gain amplification section (18) and the attenuation of the variable attenuation section (16).
摘要翻译：提供了用于在宽范围的输出功率下输出具有低失真和高效率的传输信号的传输电路。信号生成部（11）生成振幅信号和相位信号。角度调制部（12）对相位信号进行角度调制，并输出角度调制信号。调节器（14）经由可变增益放大部（18）接收振幅信号，并将基于振幅信号幅度的电压提供给振幅调制部（15）。振幅调制部（15）对角度调制信号进行振幅调制，并将调制信号输出到可变衰减部（16）。当功率信息的值小于预定阈值时，控制部分（19）增加可变增益放大部分（18）的增益和可变衰减部分（16）的衰减。

90. 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。

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