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公开(公告)号：US07098740B2
公开(公告)日：2006-08-29
申请号：US10688976
申请日：2003-10-21
Applicant: Masao Kondo , Toru Masuda , Katsuyoshi Washio
Inventor： Masao Kondo , Toru Masuda , Katsuyoshi Washio
IPC: H03F3/68
CPC classification number: H03F3/211 , H03F1/302 , H03F2200/372 , H03F2203/21178
Abstract: There is provided not only a radio frequency power amplifier using an SiGe HBT subject to a little amplification distortion, but also a communication system using the same. A conventional radio frequency power amplifier provides base bias paths of transistors Q1 through QN (SiGe HBT) with bias resistors R11 through R1N having resistance values three to five times higher than those of a ballast resistor attached to each transistor's base. A coil LB is provided in parallel with the bias resistor as a means for compensating a voltage drop due to direct current component IDC flowing through the bias resistor. Addition of the bias resistor suppresses non-linearity of low-frequency variations in an output current. Addition of the coil compensates for voltage drop. Accordingly, the maximum linear output power can be improved. As a result, it is possible to provide the power amplifier subject to a little amplification distortion within a wide output range.
Abstract translation: 不仅提供使用SiGe HBT的射频功率放大器，而且具有很小的放大失真，而且还提供了使用它的通信系统。 传统的射频功率放大器提供具有偏置电阻器R11至R11的晶体管Q 1至Q N（SiGe HBT）的基极偏置路径， SUB> 1N 的电阻值是连接到每个晶体管基极的镇流电阻的三到五倍。 作为用于补偿流过偏置电阻器的直流分量I DC的电压降的装置，设置有与偏压电阻并联的线圈L B B。 增加偏置电阻抑制输出电流中低频变化的非线性。 线圈的添加补偿电压降。 因此，可以提高最大线性输出功率。 结果，可以在宽的输出范围内提供具有小的放大失真的功率放大器。
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公开(公告)号：US20060097811A1
公开(公告)日：2006-05-11
申请号：US11268643
申请日：2005-11-08
Applicant: Takahiro Nakamura , Toru Masuda
Inventor： Takahiro Nakamura , Toru Masuda
IPC: H03B5/08
CPC classification number: H03B5/1228 , H03B5/1218 , H03B5/1231 , H03B5/1243 , H03B5/1253 , H03B5/1256 , H03B5/1293 , H03B5/1296 , H03B2201/0208 , H03B2201/0216 , H03H5/12 , H03J2200/10
Abstract: There are provided a variable inductor with little degradation in quality factor, and an oscillator and a communication system using the variable inductor. An inductance controller comprising a reactance device with a variable device value, such as, for example, a variable capacitor, is connected to a secondary inductor, magnetically coupled to a primary inductor through mutual inductance. The inductance controller is provided with an inductance control terminal for receiving a control signal for controlling capacitance of the variable capacitor. Inductance of the primary inductor is varied by varying the capacitance by the control signal.
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公开(公告)号：US20050059373A1
公开(公告)日：2005-03-17
申请号：US10901966
申请日：2004-07-30
Applicant: Takahiro Nakamura , Kenichi Ohhata , Toru Masuda
Inventor： Takahiro Nakamura , Kenichi Ohhata , Toru Masuda
IPC: H03B5/04 , H03B5/12 , H03F1/30 , H03F3/343 , H03F3/345 , H03F3/45 , H03F3/50 , H04B1/26 , H04B1/16 , H04B1/06 , H04B7/00
CPC classification number: H03F3/345 , H03B5/1215 , H03B5/1221 , H03B5/1228 , H03B5/1231 , H03B5/1243 , H03F1/30 , H03F3/3435 , H03F3/4508 , H03F3/50 , H03F2200/372 , H03F2203/45264
Abstract: A frequency generator which can perform stable frequency oscillation unaffected by temperature variation. A frequency generator having a differential amplifier (1) having an LC resonance circuit (10) as a load and buffer circuits (21, 22) feeding back an output of the differential amplifier to its input, wherein a temperature coefficient converter (5) converting an output voltage of a reference voltage generator (4) and its temperature dependence to a voltage having a predetermined voltage and temperature coefficient and outputting it is provided to control bias currents IEF of emitter follower circuits to be in proportion to temperature variation. There are a characteristic in which delay time of the emitter follower circuits constructing the buffer circuits is in inverse proportion to a transconductance of transistors and a characteristic in which the transconductance is in inverse proportion to temperature and is in proportion to the bias currents IEF. An oscillation frequency stable to temperature variation can be obtained.
Abstract translation: 频率发生器，可以进行不受温度变化影响的稳定频率振荡。 一种频率发生器，具有作为负载的LC谐振电路（10）的差分放大器（1）和将差分放大器的输出反馈到其输入端的缓冲电路（21,22），其中温度系数转换器（5）转换 参考电压发生器（4）的输出电压及其与具有预定电压和温度系数的电压的温度依赖性并输出，以将射极跟随器电路的偏置电流IEF控制为与温度变化成比例。 构成缓冲电路的射极跟随器电路的延迟时间与晶体管的跨导成反比的特性以及跨导与温度成反比并与偏置电流IEF成比例的特性。 可以得到温度变化稳定的振荡频率。
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24.发明授权公开(公告)号：US06603029B1
公开(公告)日：2003-08-05
申请号：US09673886
申请日：2000-12-18
Applicant: Taiichi Shiomi , Sachiko Miyagi , Toru Masuda
Inventor： Taiichi Shiomi , Sachiko Miyagi , Toru Masuda
IPC: C09B1104
CPC classification number: C07D309/12 , C07C69/712 , C07C69/96 , C07C2601/14
Abstract: The invention provides a partially protected trisphenol having the general formula (I) wherein R1 is an alkyl group of 1-4 carbons or an alkoxyl group of 1-4 carbons, R2 is an alkyl group of 1-6 carbons or a cycloalkyl group of 5 or 6 carbons, X1 is a hydrogen atom, an alkoxycarbonylmethyl group wherein the alkyl group has 1-4 carbons, an alkoxycarbonyl group wherein the alkyl group has 1-4 carbons or a tetrahydropyranyl group, X2 is a hydrogen atom, an alkoxycarbonylmethyl group wherein the alkyl group has 1-4 carbons, an alkoxycarbonyl group wherein the alkyl group has 1-4 carbons or a tetrahydropyranyl group, provided that when X1 is a hydrogen atom, X2 is not a hydrogen atom, and when X2 is a hydrogen atom, X1 is not a hydrogen atom; and m is an integer of 0, 1 or 2, and n is an integer of 0, 1, 2 or 3.
Abstract translation: 本发明提供了具有通式（I）的部分保护的三酚，其中R 1是1-4个碳的烷基或1-4个碳的烷氧基，R 2是1-6个碳的烷基或环烷基 5或6个碳原子，X 1为氢原子，烷基具有1-4个碳原子的烷氧基羰基甲基，烷基具有1-4个碳原子的烷氧基羰基或四氢吡喃基，X2为氢原子，烷氧基羰基甲基 其中烷基具有1-4个碳原子，烷基具有1-4个碳原子的烷氧基羰基或四氢吡喃基，条件是当X1是氢原子时，X2不是氢原子，当X2是氢原子时 X1不是氢原子; m为0,1或2的整数，n为0,1,2或3的整数。
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公开(公告)号：USRE35039E
公开(公告)日：1995-09-26
申请号：US278239
申请日：1988-11-30
Applicant: Toru Masuda , Yasuji Shibano
Inventor： Toru Masuda , Yasuji Shibano
CPC classification number: H01R43/16 , H01R43/20 , Y10T29/49208 , Y10T29/49218 , Y10T29/49792
Abstract: The invention relates to a method of manufacturing a jack comprising a step of punching a sheet metal by which a plurality of contact piece elements to be individual contact pieces of a jack are formed into a state of being partially connected to one another and arranged in parallel, a step of bending both ends of each contact piece element downward, a step of cutting off each contact piece element arranged in parallel by a cutter to form individual contact pieces, and a step of forcedly incorporating each contact piece into a jack body positioned right under a punching stroke of the cutter positioned right under a punching stroke of the cutter used in the cutting step whereby a complete automatization of the manufacturing is attained, considerably increasing productivity and decreasing an equipment cost as much.
Abstract translation: 本发明涉及一种制造千斤顶的方法，包括冲压金属板的步骤，通过该金属板将作为千斤顶的单个接触片的多个接触件元件形成为彼此部分地连接并平行布置的状态 将每个接触片元件的两端部向下方弯曲的步骤，切断由切割器平行配置的各接触片元件形成各个接触片的步骤，以及强制将每个接触片合并到位于右侧的插座体的步骤 在切割步骤中的切割行程下正确地切割刀具的冲压行程，由此实现制造的完全自动化，大大提高生产率并降低设备成本。
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Patent Agency Ranking
公开(公告)号：US4747790A
公开(公告)日：1988-05-31
申请号：US873663
申请日：1986-06-12
Applicant: Toru Masuda , Norio Ichitsubo
Inventor： Toru Masuda , Norio Ichitsubo
CPC classification number: H01R12/83
Abstract: The invention discloses a connector for printed circuit board comprising a first contact piece with a spring contactor, a second contact piece with a spring contactor, and a body in which these spring contactors can be arranged at their positions deviated from each other in lengthwise direction and a printed circuit board can be inserted in and out obliquely between contact points of the spring contactors, characterized in that when the printed circuit board inserted obliquely in the body is situated in substantially horizontal state, the printed circuit board is tightly contacted with the contact points of the spring contactors, thereby electrical connection between the printed circuit board and the first and second contact pieces being exactly and appropriately insured over a long period irrespective of frequency in insertion in and out of the printed circuit board.
Abstract translation: 本发明公开了一种用于印刷电路板的连接器，其包括具有弹簧接触器的第一接触件，具有弹簧接触器的第二接触件和其中这些弹簧接触器可以在其沿纵向方向彼此偏离的位置处布置的主体，以及 印刷电路板可以在弹簧接触器的接触点之间倾斜地插入和插出，其特征在于，当倾斜地插入到本体中的印刷电路板处于基本水平状态时，印刷电路板与接触点紧密接触 的弹性接触器，由此印刷电路板和第一和第二接触片之间的电连接在长时间内被精确和适当地保护，而不管插入和插出印刷电路板的频率如何。
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公开(公告)号：US4715819A
公开(公告)日：1987-12-29
申请号：US898780
申请日：1986-08-19
Applicant: Yoshihiro Iwasa , Toru Masuda , Yasuji Shibano
Inventor： Yoshihiro Iwasa , Toru Masuda , Yasuji Shibano
CPC classification number: H01R35/04 , H01R12/722 , H01R12/735 , H01R12/7058 , H01R12/707 , H01R12/724 , H01R23/70
Abstract: This invention discloses a connector for printed board connection comprising a first body having a plurality of first contacts to be connected with one printed wiring and a second body facing to the first contacts of the first body, in which the first body and the second body are turnably and detachably connected with each other, each end of the first contacts and each end of the second contacts are brought into contact with each other within a turning range, so that the printed boards may be easily and speedily connected with each other and that the arrangement of the printed boards may be freely selected while electrical connection therebetween being assured, maintenance being easily carried out and cost being saved thereby.
Abstract translation: 本发明公开了一种用于印刷电路板连接的连接器，包括：第一主体，具有与一个印刷布线连接的多个第一触点和面对第一主体的第一触点的第二主体，第一主体和第二主体 彼此可转动地并且可拆卸地连接，第一触点的每个端部和第二触头的每个端部在转动范围内彼此接触，使得印刷板可以容易且快速地彼此连接，并且 可以自由地选择印刷电路板的布置，同时确保电连接，容易进行维护，从而节约成本。
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公开(公告)号：US4685212A
公开(公告)日：1987-08-11
申请号：US774619
申请日：1985-09-10
Applicant: Toru Masuda , Yasuji Shibano
Inventor： Toru Masuda , Yasuji Shibano
CPC classification number: H01R43/16 , H01R43/20 , Y10T29/49208 , Y10T29/49218 , Y10T29/49792
Abstract: The invention discloses a method of manufacturing a jack comprising a step of punching a sheet metal by which a plurality of contact piece elements to be individual contact pieces of a jack are formed into a state of being partially connected to one another and arranged in parallel, a step of bending both ends of each contact piece element downward, a step of cutting off each contact piece element arranged in parallel by a cutter to form individual contact pieces, and a step of forcedly incorporating each contact piece into a jack body positioned right under a punching stroke of the cutter used in the cutting step whereby a complete automatization of the manufacturing is attained, considerably increasing productivity and decreasing an equipment cost as much.
Abstract translation: 本发明公开了一种制造千斤顶的方法，包括冲压金属板的步骤，通过该金属板将作为千斤顶的单独接触片的多个接触件元件形成为彼此部分地彼此连接并且平行布置的状态， 将每个接触片元件的两端向下弯曲的步骤，切割由切割器平行布置的每个接触片元件以形成单独的接触片的步骤，以及将每个接触片强制结合到位于正下方的插座体的步骤 在切割步骤中使用的切割器的冲压行程，从而实现制造的完全自动化，显着提高生产率并降低设备成本。
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公开(公告)号：US4103113A
公开(公告)日：1978-07-25
申请号：US788972
申请日：1977-04-19
Applicant: Kazuhiro Sato , Nobuyuki Yasoshima , Toru Masuda , Makoto Fujisawa , Yasuo Satake
Inventor： Kazuhiro Sato , Nobuyuki Yasoshima , Toru Masuda , Makoto Fujisawa , Yasuo Satake
Abstract: Key information from an attendant console is transferred to a telephone exchange in a bit serial manner, and line status information from the telephone exchange is also transferred in a bit serial manner and in a time-shared manner. At the request of the attendant console, the line status information is transferred from the telephone exchange to the attendant console in a bit serial manner, and subjected to serial-parallel conversion to obtain parallel signals for driving lamp indicator portions so as to provide an indication of the line status information. The number of signal lines connected to the attendant console is markedly reduced and, in the case of telephone number modification or the like, proper steps can be taken immediately.
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公开(公告)号：US07821335B2
公开(公告)日：2010-10-26
申请号：US12252554
申请日：2008-10-16
Applicant: Nobuhiro Shiramizu , Toru Masuda
Inventor： Nobuhiro Shiramizu , Toru Masuda
IPC: H03F1/24
CPC classification number: H03F3/50 , H03F1/342 , H03F3/195 , H03F2200/135 , H03F2200/18 , H03F2200/294 , H03F2200/451 , H03F2203/5036 , H03G1/0023
Abstract: The variable gain amplifier includes a bias circuit (BC) 1, a matching circuit (MC) 2, a variable gain resistive feedback amplifier (FA) 3 and an output follower (EA) 4. The resistance values of the load resistance Rc and feedback resistance Rf are changed in cooperation. In a case of making the load resistance Rc a high resistance to set the low noise amplifier to a high gain, the feedback resistance Rf is also made a high resistance, the feedback time constant τfb(c1)≈2π·RfCbe/(1+gmRc) of the closed loop of the resistive negative feedback amplifier 3 becomes substantially constant, and then the amplifier has a gain small in frequency dependency over a wide bandwidth. In a case of making the load resistance Rc a low resistance to set the low noise amplifier to a low gain, the feedback resistance Rf is also made a low resistance. The feedback resistance Rf with the low resistance increases the negative feedback quantity, and thus the amplifier is set to a low gain. Also, the load resistance Rc is made a low resistance, and the feedback time constant τfb(c1) becomes substantially constant. The gain is not lowered further in a high frequency region.
Abstract translation: 可变增益放大器包括偏置电路（BC）1，匹配电路（MC）2，可变增益电阻反馈放大器（FA）3和输出跟随器（EA）4.负载电阻Rc和反馈的电阻值 电阻Rf随之改变。 在使负载电阻Rc为高电平的情况下，将低噪声放大器设定为高增益的情况下，反馈电阻Rf也变为高电阻，反馈时间常数τfb（c1）≈2＆pgr·RfCbe /（1 电阻性负反馈放大器3的闭环的+ gmRc变得基本恒定，然后放大器在宽带宽上具有小的频率依赖性的增益。 在将负载电阻Rc设置为低电阻以将低噪声放大器设置为低增益的情况下，反馈电阻Rf也被制成低电阻。 具有低电阻的反馈电阻Rf增加负反馈量，因此放大器被设置为低增益。 此外，使负载电阻Rc为低电阻，反馈时间常数τfb（c1）变得基本恒定。 增益在高频区域不会进一步降低。
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