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    • 4. 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。
    • 8. 发明授权
    • High frequency power amplifying module and wireless communication apparatus
    • 高频功率放大模块和无线通信设备
    • US06492872B1
    • 2002-12-10
    • US09657237
    • 2000-09-07
    • Toru FujiokaYoshikuni MatsunagaIsao YoshidaMasatoshi MorikawaMasao HottaTetsuaki Adachi
    • Toru FujiokaYoshikuni MatsunagaIsao YoshidaMasatoshi MorikawaMasao HottaTetsuaki Adachi
    • H03G310
    • H03F1/301H03G3/3042
    • A high frequency power amplifier module is provided for improving output controllability. A wireless communication apparatus incorporates a high frequency power amplifier module in a multi-stage configuration including a plurality of cascaded MOSFETS. The power amplifier module comprises a bias circuit for generating a gate voltage in response to a power control voltage (vapc) generated based on a power control signal of the wireless communication apparatus. The gate voltage has a bias pattern which presents smaller fluctuations in output power in response to a control voltage (Vapc) in a region near a threshold voltage (Vth) of the MOSFETs in respective amplification stages. In this way, the controllability for the output power is improved. More specifically, the power amplifier module has a gate bias circuit for generating the gate voltage (Vg) which follows a gate voltage pattern. The gate voltage (Vg) supplied to a control terminal in response to the control voltage (Vapc) largely changes in a region where the gate voltage (Vg) is lower than the threshold voltage (Vth) of the respective MOSFETs, and slightly changes near the threshold voltage (Vth). Also, the gate voltage (Vg) presents desired characteristics from the vicinity of the threshold voltage (Vth) to a high Vapc voltage region.
    • 提供了一种用于提高输出可控性的高频功率放大器模块。 无线通信装置将包括多个级联MOSFET的多级配置的高频功率放大器模块结合在一起。 功率放大器模块包括用于响应于基于无线通信设备的功率控制信号产生的功率控制电压(vapc)产生栅极电压的偏置电路。 栅极电压具有偏置图案,其响应于在各个放大级中的MOSFET的阈值电压(Vth)附近的区域中的控制电压(Vapc),输出功率的波动较小。 以这种方式,提高了输出功率的可控性。 更具体地,功率放大器模块具有用于产生跟随栅极电压图案的栅极电压(Vg)的栅极偏置电路。 响应于控制电压(Vapc)而提供给控制端的栅极电压(Vg)在栅极电压(Vg)低于各个MOSFET的阈值电压(Vth)的区域内大大变化,并且稍微改变 阈值电压(Vth)。 此外,栅极电压(Vg)从阈值电压(Vth)附近到高Vapc电压区域呈现期望的特性。