POWER AMPLIFIER
    73.
    发明申请
    POWER AMPLIFIER 有权
    功率放大器

    公开(公告)号:US20120306579A1

    公开(公告)日:2012-12-06

    申请号:US13301955

    申请日:2011-11-22

    IPC分类号: H03F3/04

    摘要: A power amplifier includes: an amplifying element having a base into which input signals are inputted, a collector to which a collector voltage is applied, and an emitter; and a bias circuit supplying a bias current to the base of the amplifying element. The bias circuit includes a bias current lowering circuit which lowers the bias current when the collector voltage is lower than a prescribed threshold value.

    摘要翻译: 功率放大器包括:具有输入信号的基极的放大元件,施加集电极电压的集电极和发射极; 以及向放大元件的基极提供偏置电流的偏置电路。 偏置电路包括偏置电流降低电路,当集电极电压低于规定的阈值时,降低偏置电流。

    Directional coupler
    74.
    发明授权
    Directional coupler 有权
    定向耦合器

    公开(公告)号:US08289102B2

    公开(公告)日:2012-10-16

    申请号:US12781848

    申请日:2010-05-18

    IPC分类号: H01P5/18 H01P1/18

    CPC分类号: H01P5/184 H01P5/18

    摘要: A directional coupler includes capacitive elements electrically connected to a coupled port and an isolated port, respectively, for a coupled line on a chip (on-chip). The capacitive elements serve as matching capacitive elements and may be MIM (Metal Insulator Metal) capacitors on a substrate. A first end of a first of the capacitive elements is connected between the coupled port and the coupled line and a second end is grounded. A first end of a second of the capacitive elements is connected between the isolated port and the coupled line and a second end is grounded.

    摘要翻译: 定向耦合器包括分别电连接到芯片上(芯片上)上的耦合线的耦合端口和隔离端口的电容元件。 电容元件用作匹配的电容元件,并且可以是衬底上的MIM(金属绝缘体金属)电容器。 第一电容元件的第一端连接在耦合端口和耦合线路之间,第二端接地。 第二电容元件的第一端连接在隔离端口和耦合线之间,第二端接地。

    Power amplifier
    75.
    发明授权
    Power amplifier 有权
    功率放大器

    公开(公告)号:US08217722B2

    公开(公告)日:2012-07-10

    申请号:US13079046

    申请日:2011-04-04

    IPC分类号: H03F3/20

    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。 基准电压发生电路与增压器的输出电压对应地接通/断开。 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。

    POWER AMPLIFIER
    76.
    发明申请
    POWER AMPLIFIER 有权
    功率放大器

    公开(公告)号:US20120154055A1

    公开(公告)日:2012-06-21

    申请号:US13195066

    申请日:2011-08-01

    IPC分类号: H03F3/68 H03F3/04

    摘要: A power amplifier includes a first amplifier unit, a second amplifier unit, and an attenuator. The second amplifier receives a signal from the first amplifier unit and amplifies the signal. The attenuator is provided between the first and second amplifier units. The attenuator has arms, including at least one parallel arm and at least one series arm, and has switches connected to the arms to switch the electrical connection states of the arms with respect to the first and second amplifier units. The at least one parallel arm and the at least one series arm are alternately arranged, in the order named, as viewed in the direction from the first amplifier unit to the second amplifier unit.

    摘要翻译: 功率放大器包括第一放大器单元,第二放大器单元和衰减器。 第二放大器从第一放大器单元接收信号并放大信号。 衰减器设置在第一和第二放大器单元之间。 衰减器具有包括至少一个并联臂和至少一个串联臂的臂,并且具有连接到臂的开关,以相对于第一和第二放大器单元切换臂的电连接状态。 按照从第一放大器单元到第二放大器单元的方向观察,所述至少一个并联臂和至少一个串联臂交替排列。

    DIRECTIONAL COUPLER
    77.
    发明申请
    DIRECTIONAL COUPLER 有权
    方向耦合器

    公开(公告)号:US20110057746A1

    公开(公告)日:2011-03-10

    申请号:US12781848

    申请日:2010-05-18

    IPC分类号: H01P5/18

    CPC分类号: H01P5/184 H01P5/18

    摘要: A directional coupler includes capacitive elements electrically connected to a coupled port and an isolated port, respectively, for a coupled line on a chip (on-chip). The capacitive elements serve as matching capacitive elements and may be MIM (Metal Insulator Metal) capacitors on a substrate. A first end of a first of the capacitive elements is connected between the coupled port and the coupled line and a second end is grounded. A first end of a second of the capacitive elements is connected between the isolated port and the coupled line and a second end is grounded.

    摘要翻译: 定向耦合器包括分别电连接到芯片上(芯片上)上的耦合线的耦合端口和隔离端口的电容元件。 电容元件用作匹配的电容元件,并且可以是衬底上的MIM(金属绝缘体金属)电容器。 第一电容元件的第一端连接在耦合端口和耦合线路之间,第二端接地。 第二电容元件的第一端连接在隔离端口和耦合线之间,第二端接地。

    REFERENCE VOLTAGE GENERATION CIRCUIT AND BIAS CIRCUIT
    78.
    发明申请
    REFERENCE VOLTAGE GENERATION CIRCUIT AND BIAS CIRCUIT 有权
    参考电压发生电路和偏置电路

    公开(公告)号:US20100127689A1

    公开(公告)日:2010-05-27

    申请号:US12417730

    申请日:2009-04-03

    IPC分类号: G05F3/16 G05F1/10

    CPC分类号: G05F3/185

    摘要: A reference voltage generation circuit comprises: a first depletion mode FET; a second depletion mode FET; a first resistor; a first bipolar transistor; a second resistor; a second bipolar transistor; a third bipolar transistor; a third resistor; a third depletion mode FET having its drain connected to a second end of the first resistor and to the collector of the first bipolar transistor; and a fourth bipolar transistor having its base and collector connected to the gate and the source of the third depletion mode FET, and its emitter grounded, wherein source voltage of the second depletion mode FET is output as a reference voltage.

    摘要翻译: 参考电压产生电路包括:第一耗尽型FET; 第二耗尽型FET; 第一个电阻; 第一双极晶体管; 第二电阻器; 第二双极晶体管; 第三双极晶体管; 第三电阻; 第三耗尽型FET,其漏极连接到第一电阻器的第二端和第一双极晶体管的集电极; 以及第四双极晶体管,其基极和集电极连接到第三耗尽型FET的栅极和源极,并且其发射极接地,其中第二耗尽型FET的源极电压作为参考电压输出。

    Facsimile machine, facsimile notification system, and communication terminal device
    79.
    发明申请
    Facsimile machine, facsimile notification system, and communication terminal device 有权
    传真机,传真通知系统和通信终端设备

    公开(公告)号:US20090295540A1

    公开(公告)日:2009-12-03

    申请号:US12385857

    申请日:2009-04-22

    申请人: Kazuya Yamamoto

    发明人: Kazuya Yamamoto

    IPC分类号: H04L9/32 H04N1/00

    摘要: A facsimile machine receives image data, generates a password for received image data, assigns the generated password to the received image data, and stores the received image data. Information indicating a notification destination is extracted from the received image data, and the notification destination is notified of the password. The received image data are output responsive to subsequent input of the password at the facsimile machine. This scheme provides password protection without forcing users to register and remember passwords, and without the risk that a compromised password may be used for unauthorized output of facsimile data received later.

    摘要翻译: 传真机接收图像数据,生成接收到的图像数据的密码,将生成的密码分配给接收到的图像数据,并存储接收到的图像数据。 从接收到的图像数据中提取表示通知目的地的信息,通知密码。 接收到的图像数据是响应于在传真机上随后输入密码输出的。 该方案提供密码保护,而不强制用户注册和记住密码,并且没有风险,密码可能被用于未经授权输出稍后收到的传真数据。

    Power amplifier
    80.
    发明授权
    Power amplifier 有权
    功率放大器

    公开(公告)号:US07602238B2

    公开(公告)日:2009-10-13

    申请号:US12098538

    申请日:2008-04-07

    IPC分类号: H03F1/14

    摘要: An amplifier element amplifies RF signals. An emitter follower unit drives the amplifier element at a constant voltage corresponding to a reference voltage supplied to a reference terminal from outside. A current injection unit drives the amplifier element at a constant current corresponding to the reference voltage. An analog control unit analogically controls the output voltage of the emitter follower unit in correspondence with the control voltage supplied to a control terminal from outside. A mode switching unit switches whether the emitter follower unit is operated or not in correspondence with the control voltage.

    摘要翻译: 放大器元件放大RF信号。 射极跟随器单元以与从外部提供给参考端子的参考电压相对应的恒定电压来驱动放大器元件。 电流注入单元以对应于参考电压的恒定电流驱动放大器元件。 模拟控制单元对应于从外部提供给控制端子的控制电压模拟地控制发射极跟随器单元的输出电压。 模式切换单元根据控制电压来切换射极跟随器单元是否工作。