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    • 3. 发明授权
    • High-frequency power amplifier module
    • 高频功率放大器模块
    • US06384688B1
    • 2002-05-07
    • US09673977
    • 2000-10-25
    • Toru FujiokaIsao YoshidaMineo KatsuedaMasatoshi MorikawaYoshikuni MatsunagaKenji SekineOsamu Kagaya
    • Toru FujiokaIsao YoshidaMineo KatsuedaMasatoshi MorikawaYoshikuni MatsunagaKenji SekineOsamu Kagaya
    • H03F304
    • H03F3/72H03F3/193H03F3/211H03F2200/306H03F2200/309H03F2200/39H03F2200/429H04B1/0053H04B1/0458
    • A radio frequency power amplifier module for a dual-band type mobile communication apparatus that can transmit and receive the first frequency f1 and the second frequency f2 (f2=2×f1) is structured as explained below. This radio frequency power amplifier module for dual-band type mobile communication apparatus is comprised of a drive stage amplifier having the gain peaks at f1 and f2 with a matching circuit and a radio frequency power output circuit including a radio frequency power output transistor. The output circuit is constituted of a transmission line connected to the drain end of the output transistor, a parallel resonance circuit connected in series to the transmission line to resonate at the harmonics in the frequency twice the frequency f2, a series resonance circuit provided between one end of the resonance circuit and the ground to resonate at the harmonics in the frequency twice the frequency f2 and an output matching circuit provided in series to the other end of the parallel resonance circuit for the matching with f1 and f2. The transmission line is set to terminate at the drain end for the even number order harmonics of f2 with the reactance existing at the drain end and a circuit element constant forming the parallel resonance circuit is set to open at the drain end for the odd number order harmonics of f2 with the series resonance circuit, transmission line and reactance existing at the drain end. With the structure explained above, since harmonics power can be controlled through control of the predetermined harmonics, high efficiency and reduction in size of the radio frequency power amplifier module can be realized.
    • 可以发送和接收第一频率f1和第二频率f2(f2 = 2xf1)的用于双频带型移动通信装置的射频功率放大器模块如下所述地构成。该射频功率放大器模块用于双频 型移动通信装置包括具有匹配电路的具有在f1和f2的增益峰值的驱动级放大器和包括射频功率输出晶体管的射频功率输出电路。 输出电路由连接到输出晶体管的漏极端的传输线构成,并联谐振电路与传输线串联连接,以频率f2的频率谐振地谐振,串联谐振电路设置在一个 谐振电路的端部和谐振频率为频率f2的频率的谐波的接地和与并联谐振电路的另一端串联设置以用于与f1和f2匹配的输出匹配电路。 传输线被设置为在漏极端处终止,其中存在于漏极端处的电抗的偶数次谐波为f2,并且形成并联谐振电路的电路元件常数设置为在漏极端处为奇数阶开路 具有串联谐振电路的f2谐波,漏极端存在的传输线和电抗。通过上述结构,由于能够通过控制预定谐波来控制谐波功率,高效率和减小射频功率放大器的尺寸 模块可以实现。
    • 9. 发明申请
    • Semiconductor integrated circuit device
    • 半导体集成电路器件
    • US20060255861A1
    • 2006-11-16
    • US11431534
    • 2006-05-11
    • Hideyuki OnoToru FujiokaMasahito Numanami
    • Hideyuki OnoToru FujiokaMasahito Numanami
    • H03F3/04
    • H03F1/565H03F1/0205H03F1/301H03F1/3205H03F3/195H03F3/24H03F2200/222H03F2200/372H03F2200/387
    • The present invention is to provide a technique which optimizes a gate resistor of a bias circuit to thereby make it possible to greatly improve a distortion characteristic of a power amplifier. A bias circuit used as for biasing the gate of a final-stage power transistor is included in a power amplifier provided in a communication mobile system. In the bias circuit, an inductance and a resistor are series-connected between a power supply voltage and the gate of the power transistor. The resistance value of the resistor is set to approximately the same order as an input impedance of the power transistor. When the input impedance of the power transistor is about 10 Ω or so, for example, the resistor is set to about a few Ω to about 100 Ω. Thus, the gain of the power transistor at a low-frequency band can greatly be suppressed.
    • 本发明提供一种优化偏置电路的栅极电阻的技术,从而可以大大提高功率放大器的失真特性。 用于偏置最后级功率晶体管的栅极的偏置电路包括在设置在通信移动系统中的功率放大器中。 在偏置电路中,电源电压和电阻串联连接在电源电压和功率晶体管的栅极之间。 电阻器的电阻值设定为大致与功率晶体管的输入阻抗相同的次数。 当功率晶体管的输入阻抗为大约10欧姆左右时,例如,电阻器被设置为大约几欧姆到大约100欧姆。 因此,可以大大抑制功率晶体管在低频带的增益。
    • 10. 发明申请
    • SEMICONDUCTOR INTEGRATED CIRCUIT DEVICE
    • 半导体集成电路设备
    • US20080287090A1
    • 2008-11-20
    • US12179716
    • 2008-07-25
    • Hideyuki OnoToru FujiokaMasahito Numanami
    • Hideyuki OnoToru FujiokaMasahito Numanami
    • H04B1/16
    • H03F1/565H03F1/0205H03F1/301H03F1/3205H03F3/195H03F3/24H03F2200/222H03F2200/372H03F2200/387
    • The present invention is to provide a technique which optimizes a gate resistor of a bias circuit to thereby make it possible to greatly improve a distortion characteristic of a power amplifier. A bias circuit used as for biasing the gate of a final-stage power transistor is included in a power amplifier provided in a communication mobile system. In the bias circuit, an inductance and a resistor are series-connected between a power supply voltage and the gate of the power transistor. The resistance value of the resistor is set to approximately the same order as an input impedance of the power transistor. When the input impedance of the power transistor is about 10Ω or so, for example, the resistor is set to about a few Ω to about 100Ω. Thus, the gain of the power transistor at a low-frequency band can greatly be suppressed.
    • 本发明提供一种优化偏置电路的栅极电阻的技术,从而可以大大提高功率放大器的失真特性。 用于偏置最后级功率晶体管的栅极的偏置电路包括在设置在通信移动系统中的功率放大器中。 在偏置电路中,电源电压和电阻串联连接在电源电压和功率晶体管的栅极之间。 电阻器的电阻值设定为大致与功率晶体管的输入阻抗相同的次数。 当功率晶体管的输入阻抗大约为10万左右时,例如,电阻器被设定为大约几欧姆至大约100mega。 因此,可以大大抑制功率晶体管在低频带的增益。