Electronic component for high frequency power amplifier and radio communication system
    3.
    发明授权
    Electronic component for high frequency power amplifier and radio communication system 有权
    电子元件用于高频功率放大器和无线电通信系统

    公开(公告)号:US07053708B2

    公开(公告)日:2006-05-30

    申请号:US10820026

    申请日:2004-04-08

    IPC分类号: H03G5/16

    摘要: There are provided an electronic component for high frequency power amplification provided with a high-sensitivity output power detection circuit which is immune to the influence of changes in the use environment thereof, free of an output mismatch, small in size, and low in insertion loss and a wireless communication system using the electronic component. There are provided an output detection transistor which receives, at a control terminal, a voltage extracted from the intermediate node of an impedance matching circuit provided between the final-stage power amplification transistor of a high-frequency power amplification circuit and an output terminal thereof via a capacitor element and allows a current proportional to an output power to flow, a bias generation circuit for giving an operating point to the control terminal of the transistor, a current mirror circuit for transferring the current flowing in the output detection transistor, and a current-to-voltage conversion transistor for converting the transferred current to a voltage.

    摘要翻译: 提供了一种高频功率放大的电子元件,其具有高灵敏度的输出功率检测电路,其免受其使用环境变化的影响,没有输出失配,尺寸小,插入损耗低 以及使用该电子部件的无线通信系统。 提供了一种输出检测晶体管,其在控制端子处接收从设置在高频功率放大电路的最后级功率放大晶体管和其输出端之间的阻抗匹配电路的中间节点提取的电压 电容器元件并且允许与输出功率成比例的电流流动;用于给晶体管的控制端施加工作点的偏置产生电路,用于传送在输出检测晶体管中流动的电流的电流镜电路,以及电流 电压转换晶体管,用于将传输的电流转换成电压。

    Electronic parts for high frequency power amplifier
    4.
    发明申请
    Electronic parts for high frequency power amplifier 审中-公开
    电子部件用于高频功率放大器

    公开(公告)号:US20070069820A1

    公开(公告)日:2007-03-29

    申请号:US11527518

    申请日:2006-09-27

    IPC分类号: H03F1/52

    摘要: An electronic part for a high frequency power amplifier is provided which is designed to constitute at least a part of a wireless communication system for performing feedback control by detecting an output power, and which can miniaturize a directional coupler. Also, the electronic part permits control of the output power with high accuracy without having any influence on a monitor voltage by a reflected wave propagating through a line of the directional coupler. The directional coupler includes a subline disposed in parallel to and in the vicinity of a part of a main line of an impedance matching circuit on the last output stage side of a power amplifier circuit, a capacitance element connected to between the main line and the subline, and a resistor element connected to between a constant potential point and a termination side of the subline. An output power detection circuit includes a first detection circuit for detecting an alternating current signal taken from a beginning side of the subline, a second detecting circuit for detecting an alternating current signal taken from a termination side of the subline, and a subtracting circuit for performing subtraction between an output of the first detection circuit and an output of the second detection circuit.

    摘要翻译: 提供了一种用于高频功率放大器的电子部件,其被设计为构成用于通过检测输出功率来执行反馈控制的无线通信系统的至少一部分,并且其可以使定向耦合器小型化。 此外,电子部件允许以高精度控制输出功率,而不会由通过定向耦合器的线传播的反射波对监视器电压产生任何影响。 定向耦合器包括与功率放大器电路的最后输出级侧的阻抗匹配电路的主线的一部分平行设置的子线,连接在主线与副线之间的电容元件 以及连接在该子线路的恒定电位点和终端侧之间的电阻元件。 输出功率检测电路包括:第一检测电路,用于检测从该子线的起始侧获得的交流信号;第二检测电路,用于检测从该子线的终端侧取得的交流信号,以及一个减法电路,用于执行 第一检测电路的输出与第二检测电路的输出之间的减法。

    High-frequency power amplification electronic part and wireless communication system
    6.
    发明授权
    High-frequency power amplification electronic part and wireless communication system 有权
    高频功率放大电子部件和无线通信系统

    公开(公告)号:US06958649B2

    公开(公告)日:2005-10-25

    申请号:US11097271

    申请日:2005-04-04

    摘要: A high-frequency power amplification electronic part is disclosed which comprises a power amplifier circuit and a bias control circuit, the power amplifier circuit having a plurality of amplifier stages for amplifying an input high-frequency signal, the bias control circuit acting to bias the power amplifier circuit. The power amplifier circuit controls output power in accordance with input power that is varied while a gain of the power amplifier circuit is being fixed by either a bias current or a bias voltage supplied from the bias control circuit. The bias control circuit supplies at least two diode characteristic elements with a predetermined current each in order to generate at least two voltages demonstrating different temperature characteristics, the bias control circuit further using the generated voltages as a basis for generating either a plurality of bias currents or a plurality of bias voltages having a desired temperature-dependent rate of change each, the generated bias currents or bias voltages being fed to each of the plural amplifier stages constituting the power amplifier circuit.

    摘要翻译: 公开了一种高频功率放大电子部件,其包括功率放大器电路和偏置控制电路,所述功率放大器电路具有用于放大输入高频信号的多个放大器级,所述偏置控制电路用于偏置功率 放大电路。 功率放大器电路根据输入功率来控制输出功率,该功率随着功率放大器电路的增益被偏置电流或从偏置控制电路提供的偏置电压固定而变化。 偏置控制电路提供至少两个具有预定电流的二极管特征元件,以便产生表现出不同温度特性的至少两个电压,偏置控制电路进一步使用产生的电压作为产生多个偏置电流或 多个具有期望的温度相关变化率的偏置电压,所产生的偏置电流或偏置电压被馈送到构成功率放大器电路的多个放大器级中的每一个。

    Metal-working oil composition
    8.
    发明授权
    Metal-working oil composition 失效
    金属加工油组成

    公开(公告)号:US4664823A

    公开(公告)日:1987-05-12

    申请号:US746008

    申请日:1985-06-19

    摘要: A metal-working oil composition comprises as essential components thereof (a) one or more lube-oil components selected from the group consisting of oils, fats, mineral oils and fatty acid esters; and (b) one or more water-soluble polymer compounds selected from the group consisting of homopolymers of acrylic amide, copolymers of acrylic amide and other monomers and salts of the homopolymers and copolymers, the molecular weights of which homopolymers, copolymers and salts fall within the range of from 1,000 to 10,000,000.The incorporation of the specific water-soluble compound allows a lube-oil component to disperse stably as large droplets in water and hence, several advantages including thick and strong lubricating film suitable for use under severe machining conditions can be obtained.

    摘要翻译: 金属加工油组合物包含其主要成分(a)一种或多种选自油,脂肪,矿物油和脂肪酸酯的润滑油成分; 和(b)一种或多种选自丙烯酰胺的均聚物,丙烯酰胺和其它单体的共聚物以及均聚物和共聚物的盐的水溶性聚合物化合物,其均聚物,共聚物和盐的分子量属于 范围从1,000到10,000,000。 特定的水溶性化合物的结合使得润滑油成分能够以大的液滴稳定地分散在水中,因此可以获得适合在严格的加工条件下使用的厚而强的润滑膜的几个优点。

    High frequency power amplifier component and radio communication system
    9.
    发明授权
    High frequency power amplifier component and radio communication system 有权
    高频功率放大器组件和无线电通信系统

    公开(公告)号:US07346318B2

    公开(公告)日:2008-03-18

    申请号:US10844423

    申请日:2004-05-13

    IPC分类号: H04B1/04

    摘要: In radio communication system that is able to transmit in two or more modulation modes, e.g., one modulation mode when phase shifts are performed and another modulation mode when phase shifts and amplitude shifts are performed, the disclosed invention can avoid that receiving band noise becomes so great not to conform to the GSM standards' prescription for such noise in a high voltage region of the power supply voltage, even when the output power is controlled by changing the amplitude of the input signal to the power amplifier circuitry while fixing the bias voltages to be applied to the power amplifying transistors. When the output power is controlled as above, in the modulation mode (GSM mode) when phase shifts are performed, idle currents flowing across the power amplifying transistors are regulated, depending on the power supply voltage, i.e., the idle currents are decreased when the power supply voltage is high and increased when the power supply voltage is low.

    摘要翻译: 在能够以两个或更多个调制模式发送的无线电通信系统中,例如当执行相移时的一个调制模式,并且执行相移和幅度偏移时的另一个调制模式,所公开的发明可以避免接收频带噪声变得如此 即使当通过将输入信号的幅度改变为功率放大器电路同时将偏置电压固定在一起时,即使输出功率被控制,也不符合GSM标准在电源电压的高电压区域中的这种噪声的处方 应用于功率放大晶体管。 当输出功率如上所述地控制时,在执行相移时在调制模式(GSM模式)下,根据电源电压来调节流过功率放大晶体管的空闲电流,即当空载电流 电源电压较高,电源电压低时增加。

    HIGH-FREQUENCY POWER AMPLIFICATION ELECTRONIC PART AND WIRELESS COMMUNICATION SYSTEM
    10.
    发明申请
    HIGH-FREQUENCY POWER AMPLIFICATION ELECTRONIC PART AND WIRELESS COMMUNICATION SYSTEM 有权
    高频功率放大电子部件和无线通信系统

    公开(公告)号:US20050168281A1

    公开(公告)日:2005-08-04

    申请号:US11097271

    申请日:2005-04-04

    摘要: A high-frequency power amplification electronic part is disclosed which comprises a power amplifier circuit and a bias control circuit, the power amplifier circuit having a plurality of amplifier stages for amplifying an input high-frequency signal, the bias control circuit acting to bias the power amplifier circuit. The power amplifier circuit controls output power in accordance with input power that is varied while a gain of the power amplifier circuit is being fixed by either a bias current or a bias voltage supplied from the bias control circuit. The bias control circuit supplies at least two diode characteristic elements with a predetermined current each in order to generate at least two voltages demonstrating different temperature characteristics, the bias control circuit further using the generated voltages as a basis for generating either a plurality of bias currents or a plurality of bias voltages having a desired temperature-dependent rate of change each, the generated bias currents or bias voltages being fed to each of the plural amplifier stages constituting the power amplifier circuit.

    摘要翻译: 公开了一种高频功率放大电子部件,其包括功率放大器电路和偏置控制电路,所述功率放大器电路具有用于放大输入高频信号的多个放大器级,所述偏置控制电路用于偏置功率 放大电路。 功率放大器电路根据输入功率来控制输出功率,该功率随着功率放大器电路的增益被偏置电流或从偏置控制电路提供的偏置电压固定而变化。 偏置控制电路提供至少两个具有预定电流的二极管特征元件,以便产生表现出不同温度特性的至少两个电压,偏置控制电路进一步使用产生的电压作为产生多个偏置电流或 多个具有期望的温度相关变化率的偏置电压,所产生的偏置电流或偏置电压被馈送到构成功率放大器电路的多个放大器级中的每一个。