公开(公告)号：US20120062321A1

公开(公告)日：2012-03-15

申请号：US13079046

申请日：2011-04-04

申请人： Kazuya Yamamoto ,  Miyo Miyashita ,  Satoshi Suzuki ,  Takayuki Matsuzuka

发明人： Kazuya Yamamoto ,  Miyo Miyashita ,  Satoshi Suzuki ,  Takayuki Matsuzuka

IPC分类号： H03F3/20

CPC分类号： H03F3/195 ,  H03F1/0277 ,  H03F3/189 ,  H03F3/245 ,  H03F3/72 ,  H03F2200/27 ,  H03F2200/411 ,  H03F2203/7206 ,  H03F2203/7236 ,  H03G1/0088

摘要： A power amplifier comprises: an amplifying transistor for amplifying an input signal; a reference voltage generating circuit which generates a reference voltage; a bias circuit generating a bias voltage based on the reference voltage and supplying the bias voltage to the amplifying transistor; and a booster elevating an enable voltage input from outside and outputting the enable voltage. The reference voltage generating circuit is turned ON/OFF in correspondence with an output voltage of the booster. The booster includes: an enable terminal to which the enable voltage is applied; a power source terminal connected to a power source; a transistor having a control electrode connected to the enable terminal, a first electrode connected to the power source terminal, and a second electrode that is grounded; and a FET resistor connected between the first electrode of the transistor and the power source terminal. A gate electrode of the FET resistor is open.

摘要翻译： 功率放大器包括：放大晶体管，用于放大输入信号; 产生参考电压的基准电压产生电路; 偏置电路，基于所述参考电压产生偏置电压，并将所述偏置电压提供给所述放大晶体管; 并且升压器提升从外部输入的使能电压并输出使能电压。 参考电压产生电路对应于升压器的输出电压而导通/截止。 升压器包括：施加使能电压的使能端子; 连接到电源的电源端子; 具有连接到使能端子的控制电极的晶体管，连接到电源端子的第一电极和接地的第二电极; 以及连接在晶体管的第一电极和电源端子之间的FET电阻器。 FET电阻的栅电极断开。

公开(公告)号：US20110187459A1

公开(公告)日：2011-08-04

申请号：US12875168

申请日：2010-09-03

申请人： Takayuki Matsuzuka ,  Kazuya Yamamoto ,  Tomoyuki Asada

发明人： Takayuki Matsuzuka ,  Kazuya Yamamoto ,  Tomoyuki Asada

IPC分类号： H03F3/16

CPC分类号： H03F3/16

摘要： An emitter-follower bias circuit supplying a bias voltage to the base of an amplification transistor includes: a depletion mode FET boosting a reference voltage; and an emitter-follower circuit generating the bias voltage in response to the reference voltage boosted by the depletion mode FET.

摘要翻译： 向放大晶体管的基极提供偏置电压的射极跟随器偏置电路包括：耗尽型FET，提高参考电压; 以及射极跟随器电路，其响应于由耗尽型FET升压的参考电压而产生偏置电压。

公开(公告)号：US07928804B2

公开(公告)日：2011-04-19

申请号：US12612755

申请日：2009-11-05

申请人： Kazuya Yamamoto ,  Satoshi Suzuki ,  Takao Haruna ,  Takao Moriwaki

发明人： Kazuya Yamamoto ,  Satoshi Suzuki ,  Takao Haruna ,  Takao Moriwaki

IPC分类号： H03F3/16

CPC分类号： H01L29/778 ,  H01L27/0605 ,  H01L27/0623 ,  H01L29/0826 ,  H01L29/165 ,  H01L29/7371 ,  H03F3/195 ,  H03F2200/18 ,  H03F2200/411

摘要： A power amplifier includes: a semiconductor substrate; a preceding-stage amplifying device on the semiconductor substrate, amplifying an input signal; a following-stage amplifying device on the semiconductor substrate, amplifying an output signal of the preceding-stage amplifying device; and an inter-stage matching circuit connecting the preceding-stage amplifying device to the following-stage amplifying device. The preceding-stage amplifying device has a first field effect transistor; the following-stage amplifying device has a heterojunction bipolar transistor; and the inter-stage matching circuit has a capacitance galvanically separating the output terminal of the preceding-stage amplifying device from the input terminal of the following-stage amplifying device.

摘要翻译： 功率放大器包括：半导体衬底; 在半导体衬底上的前级放大装置，放大输入信号; 在半导体衬底上的后级放大装置，放大前级放大装置的输出信号; 以及将前级放大装置连接到后级放大装置的级间匹配电路。 前级放大装置具有第一场效应晶体管; 后级放大装置具有异质结双极晶体管; 并且级间匹配电路具有将前级放大装置的输出端子与后级放大装置的输入端子电流分离的电容。

公开(公告)号：US07907032B2

公开(公告)日：2011-03-15

申请号：US12464919

申请日：2009-05-13

申请人： Kazuya Yamamoto ,  Miyo Miyashita

发明人： Kazuya Yamamoto ,  Miyo Miyashita

IPC分类号： H01P5/18 ,  H03H11/16

CPC分类号： H01P5/18

摘要： A directional coupler includes a main line connected at a first end to an input port and at a second end to an output port, a coupled line connected at a first end to a coupled port and at a second end to an isolated port, and a phase shifter connected at a first end to the isolated port and at a second end to the coupled port. The phase shifter phase shifts a second reflected wave component such that the second reflected wave component is opposite in phase to a first reflected wave component, the second reflected wave component traveling from the output port to the coupled port through the isolated port and the phase shifter, the first reflected wave component traveling from the output port to the coupled port through the coupled line.

摘要翻译： 定向耦合器包括在第一端连接到输入端口并且在第二端连接到输出端口的主线，在第一端处连接到耦合端口并且在第二端部处连接到隔离端口的耦合线，以及 移相器在第一端连接到隔离端口，在第二端连接到耦合端口。 移相器相移第二反射波分量，使得第二反射波分量与第一反射波分量相位相反，第二反射波分量通过隔离端口和相移器从输出端口传播到耦合端口 第一反射波分量从输出端口通过耦合线行进到耦合端口。

公开(公告)号：US07880917B2

公开(公告)日：2011-02-01

申请号：US10996954

申请日：2004-11-24

申请人： Kazuya Yamamoto

发明人： Kazuya Yamamoto

IPC分类号： G06F15/00

CPC分类号： G06K15/00 ,  G06K15/1817

摘要： When a jam occurs, a CPU stops reading of compression data, receives again all of the read-out compression data of a page to which the reading-stopped compression data belongs, and stores it into each of corresponding storing areas in a reception buffer again. A time necessary for communication between a host and a printer at the time of jam recovery can be shortened.

摘要翻译： 当卡纸发生时，CPU停止读取压缩数据，再次接收读取停止的压缩数据所属的页面的所有读出的压缩数据，并将其再次存储在接收缓冲器中的每个相应的存储区域中 。 可以缩短卡纸恢复时主机与打印机之间的通信所需的时间。

公开(公告)号：US20110018639A1

公开(公告)日：2011-01-27

申请号：US12712234

申请日：2010-02-25

申请人： Takayuki Matsuzuka ,  Kazuya Yamamoto ,  Atsushi Okamura

发明人： Takayuki Matsuzuka ,  Kazuya Yamamoto ,  Atsushi Okamura

IPC分类号： H03F3/04

CPC分类号： H03F1/0261 ,  H03F3/195 ,  H03F3/245 ,  H03F2200/18 ,  H03F2200/451 ,  H03F2200/555

摘要： A power amplifier and bias circuit includes a combination circuit in which a voltage drive bias circuit and a current drive bias circuit are connected in a parallel relationship with each other. The power amplifier bias circuit also includes an idle current control circuit which uses the collector voltage of amplifier transistors. When the collector voltage of the amplifier transistors is lower than the threshold voltage of a first transistor (approximately 1.3 V), the first transistor is turned off. At that time, since the reference voltage (2.4-2.5 V) is higher than the voltage for turning on both a second transistor and a diode (namely, approximately 1.3 V plus 0.7 V), a current flows and the first transistor turns on. As a result, a current is drawn from the bases of the amplifier transistors to GND through two resistances, so that the idle currents of the amplifier transistors decrease.

摘要翻译： 功率放大器和偏置电路包括其中电压驱动偏置电路和电流驱动偏置电路彼此并联连接的组合电路。 功率放大器偏置电路还包括使用放大器晶体管的集电极电压的空闲电流控制电路。 当放大器晶体管的集电极电压低于第一晶体管（约1.3V）的阈值电压时，第一晶体管截止。 此时，由于参考电压（2.4-2.5V）高于用于接通第二晶体管和二极管的电压（即，大约1.3V加上0.7V），所以电流流过，第一晶体管导通。 结果，通过两个电阻将电流从放大器晶体管的基极拉到GND，使得放大器晶体管的空闲电流减小。

公开(公告)号：US20100301944A1

公开(公告)日：2010-12-02

申请号：US12612755

申请日：2009-11-05

申请人： Kazuya Yamamoto ,  Satoshi Suzuki ,  Takao Haruna ,  Takao Moriwaki

发明人： Kazuya Yamamoto ,  Satoshi Suzuki ,  Takao Haruna ,  Takao Moriwaki

IPC分类号： H03F3/16

CPC分类号： H01L29/778 ,  H01L27/0605 ,  H01L27/0623 ,  H01L29/0826 ,  H01L29/165 ,  H01L29/7371 ,  H03F3/195 ,  H03F2200/18 ,  H03F2200/411

摘要： A power amplifier includes: a semiconductor substrate; a preceding-stage amplifying device on the semiconductor substrate, amplifying an input signal; a following-stage amplifying device on the semiconductor substrate, amplifying an output signal of the preceding-stage amplifying device; and an inter-stage matching circuit connecting the preceding-stage amplifying device to the following-stage amplifying device. The preceding-stage amplifying device has a first field effect transistor; the following-stage amplifying device has a heterojunction bipolar transistor; and the inter-stage matching circuit has a capacitance galvanically separating the output terminal of the preceding-stage amplifying device from the input terminal of the following-stage amplifying device.

摘要翻译： 功率放大器包括：半导体衬底; 在半导体衬底上的前级放大装置，放大输入信号; 在半导体衬底上的后级放大装置，放大前级放大装置的输出信号; 以及将前级放大装置连接到后级放大装置的级间匹配电路。 前级放大装置具有第一场效应晶体管; 后级放大装置具有异质结双极晶体管; 并且级间匹配电路具有将前级放大装置的输出端子与后级放大装置的输入端子电流分离的电容。

公开(公告)号：US20100186898A1

公开(公告)日：2010-07-29

申请号：US12686060

申请日：2010-01-12

申请人： Kohei FUKUSHIMA ,  Toshiki Takahashi ,  Hiroyuki Matsuura ,  Yutaka Motoyama ,  Kazuya Yamamoto

发明人： Kohei FUKUSHIMA ,  Toshiki Takahashi ,  Hiroyuki Matsuura ,  Yutaka Motoyama ,  Kazuya Yamamoto

IPC分类号： C23F1/08 ,  C23C16/505

CPC分类号： C23C16/345 ,  C23C16/4401 ,  C23C16/452 ,  H01J37/321 ,  H01J37/3244

摘要： A vertical plasma processing apparatus for performing a plasma process on a plurality of target objects together at a time includes an activation mechanism configured to turn a process gas into plasma. The activation mechanism includes a vertically elongated plasma generation box attached to a process container at a position corresponding to a process field and confining a plasma generation area airtightly communicating with the process field, an ICP electrode disposed outside the plasma generation box and extending in a longitudinal direction of the plasma generation box, and an RF power supply connected to the ICP electrode. The ICP electrode includes a separated portion separated from a wall surface of the plasma generation box by a predetermined distance.

摘要翻译： 一次在一起对多个目标物体进行等离子体处理的垂直等离子体处理装置包括将处理气体转换为等离子体的启动机构。 激活机构包括垂直延长的等离子体生成箱，其在对应于处理场的位置处附接到处理容器，并限制与过程场气密地通信的等离子体产生区域; ICP电极，设置在等离子体生成箱的外部并且沿纵向延伸 等离子体生成箱的方向，以及与ICP电极连接的RF电源。 ICP电极包括与等离子体发生箱的壁面隔开预定距离的分离部分。

公开(公告)号：US20100148422A1

公开(公告)日：2010-06-17

申请号：US12448793

申请日：2008-08-28

申请人： Akira Kawaguchi ,  Kazuya Yamamoto

发明人： Akira Kawaguchi ,  Kazuya Yamamoto

IPC分类号： B65H9/00 ,  B65H5/22 ,  B65H7/02 ,  B65H5/02

CPC分类号： B65H5/224 ,  B65H5/38 ,  B65H15/00 ,  B65H2220/09 ,  B65H2301/3421 ,  B65H2404/612

摘要： A sheet of paper is reliably held by suction at the front and rear of a turn guide on the transport path of the sheet according to paper transport conditions.

摘要翻译： 根据纸张输送条件，纸张在纸张的输送路径上的转向引导件的前后被抽吸可靠地保持。

公开(公告)号：US07688133B2

公开(公告)日：2010-03-30

申请号：US12254069

申请日：2008-10-20

申请人： Kazuya Yamamoto ,  Miyo Miyashita

发明人： Kazuya Yamamoto ,  Miyo Miyashita

IPC分类号： H03F1/14

CPC分类号： H03F3/191 ,  H03F1/0261 ,  H03F3/72 ,  H03F2200/18 ,  H03F2200/408 ,  H03F2203/7239

摘要： A power amplifier includes: an amplifying transistor; a bias circuit; a first diode; a second diode; a matching attenuating circuit; a first current mirror circuit; a serial resonant circuit, and a switch. In an amplification mode, the bias circuit supplies a bias current to the amplifying transistor, and the first current mirror circuit turns off the first and second diodes, and the switch. In an attenuation mode, the bias circuit supplies no bias current to the amplifying transistor, and the first current mirror circuit turns on the first and second diodes and the switch.

摘要翻译： 功率放大器包括：放大晶体管; 偏置电路; 第一个二极管; 第二个二极管; 匹配衰减电路; 第一电流镜电路; 串联谐振电路和开关。 在放大模式中，偏置电路向放大晶体管提供偏置电流，并且第一电流镜电路关断第一和第二二极管以及开关。 在衰减模式中，偏置电路不向放大晶体管提供偏置电流，并且第一电流镜电路导通第一和第二二极管和开关。