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    • 1. 发明授权
    • Multi-stage CMOS power amplifier
    • 多级CMOS功率放大器
    • US08022762B2
    • 2011-09-20
    • US12823420
    • 2010-06-25
    • Youn Suk KimHyo Gun BaeJoong Jin NamJun Goo WonKi Joong Kim
    • Youn Suk KimHyo Gun BaeJoong Jin NamJun Goo WonKi Joong Kim
    • H03F1/00
    • H03F3/45179H03F1/3205H03F3/193H03F3/245H03F3/3022H03F2200/411H03F2200/516H03F2200/534H03F2200/537H03F2200/541
    • There is provided a multi-stage CMOS power amplifier including: a driver amplifier having differential output terminals, inverting differential signals input through first and second input terminals and outputting the respective inverted signals through the differential output terminals; a transformer for power matching having a primary coil connected between the differential output terminals of the driver amplifier and a secondary coil coupled with the primary coil using electromagnetic induction, having a predetermined turns ratio to the primary coil, and connected to a direct current (DC) tuning voltage terminal; and a power amplifier power-amplifying differential signals passing through one end and the other end of the secondary coil of the transformer and outputting the respective power-amplified differential signals through first and second output terminals.
    • 提供了一种多级CMOS功率放大器,包括:具有差分输出端的驱动放大器,通过第一和第二输入端输入的差分信号反相,并通过差分输出端输出各反相信号; 一种用于功率匹配的变压器,其具有连接在所述驱动放大器的差分输出端子之间的初级线圈和使用电磁感应耦合到所述初级线圈的次级线圈,所述次级线圈具有与所述初级线圈的预定匝数比,并且连接到直流 )调谐电压端子; 以及功率放大器功率放大差分信号,其通过变压器的次级线圈的一端和另一端,并通过第一和第二输出端输出相应的功率放大差分信号。