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    • 5. 发明申请
    • RADIO FRONT END WITH RESONANT TRANSMIT/RECEIVE SWITCH
    • 无线电前端,配有发射/接收开关
    • WO2009009646A3
    • 2011-03-17
    • PCT/US2008069609
    • 2008-07-10
    • AXIOM MICRODEVICES INCQIAO DONGJAINGKEE SCOTT DAOKI ICHIROMCCLYMONT DONALD
    • QIAO DONGJAINGKEE SCOTT DAOKI ICHIROMCCLYMONT DONALD
    • H04B1/44
    • H04B1/44
    • A device having a radio front end is provided. The radio front end includes an inductor having a first end and a second end. A capacitor having a first end and a second end is connected to the second end of the inductor. An antenna is connected to the second end of the inductor and the second end of the capacitor. A first switch is connected to the first end of the inductor and the first end of the capacitor, wherein the inductor and capacitor form a resonant circuit when the first switch is closed. A second switch is connected to the resonant circuit, the second switch connecting the resonant circuit to ground through a low impedance when the first switch is closed. A third switch is connected to a transmit power amplifier connecting the transmit power amplifier to ground through a low impedance when the first switch is closed.
    • 提供具有无线电前端的设备。 无线电前端包括具有第一端和第二端的电感器。 具有第一端和第二端的电容器连接到电感器的第二端。 天线连接到电感器的第二端和电容器的第二端。 第一开关连接到电感器的第一端和电容器的第一端,其中当第一开关闭合时,电感器和电容器形成谐振电路。 第二开关连接到谐振电路,第二开关在第一开关闭合时通过低阻抗将谐振电路连接到地。 当第一开关闭合时,第三开关连接到通过低阻抗将发射功率放大器连接到地的发射功率放大器。
    • 10. 发明申请
    • DISTRIBUTED CIRCULAR GEOMETRY POWER AMPLIFIER ARCHITECTURE
    • 分布式圆形几何功率放大器架构
    • WO0231967A2
    • 2002-04-18
    • PCT/US0131813
    • 2001-10-09
    • CALIFORNIA INST OF TECHN
    • AOKI ICHIROHAJIMIRI SEYED-ALIRUTLEDGE DAVID
    • H03F1/22H03F3/26H03F3/42H03F3/60H03F
    • H03F1/223H03F3/265H03F3/423H03F3/604H03F2200/534H03F2200/537H03F2200/541
    • The present invention discloses a distributed power amplifier topology and device that efficiently and economically enhances the power output of an RF signal to be amplified. The power amplifier comprises a plurality of push-pull amplifiers interconnected in a novel circular geometry that preferably function as a first winding of an active transformer having signal inputs of adjacent amplification devices driven with an input signal of equal magnitude and opposite phase. The topology also discloses the use of a secondary winding that matches the geometry of primary winding and variations thereof that serve to efficiently combine the power of the individual power amplifiers. The novel architecture enables the design of low-cost, fully-integrated, high-power amplifiers in the RF, microwave, and millimeter-wave frequencies.
    • 本发明公开了一种分布式功率放大器拓扑和器件,其有效且经济地增强待放大的RF信号的功率输出。 功率放大器包括以新颖的圆形几何形式互连的多个推挽放大器,其优选地用作有源变压器的第一绕组,该有源变压器的信号输入由相等幅度和相反相位的输入信号驱动的相邻放大器件的信号输入。 该拓扑还公开了使用与初级绕组的几何形状及其变化相匹配的次级绕组,其用于有效地组合各个功率放大器的功率。 新颖的架构使得能够在RF,微波和毫米波频率中设计低成本,完全集成的大功率放大器。