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采用0.13μm RF CMOS工艺,设计了一款可应用于EoC收发芯片的三频段上混频器,通过改变接入并联LC负载谐振网络中电容的值,使电路分别工作在1.2GHz,2GHz,2.4GHz频段。在3.3V电源电压下,1.2GHz,2GHz,2.4GHz频段上,总电流为35.1mA;单边带(SSB)电压转换增益分别为3.77dB,4.97dB,4.78dB;输出1dB压缩点分别为-0.22dBm,0.78dBm,0.5dBm;噪声系数分别为5.13dB,5.76dB,6.67dB。通过控制输入跨导级的偏置实现混频器的开启和关断,上混频器的开启时间为200ns,关断时间小于100ns。
A 0.13μm RF CMOS process is used to design a tri-band up-mixer that can be used in the EoC transceiver chip. By changing the value of the capacitor in the parallel LC-load resonant network, the circuit operates at 1.2GHz, 2.4GHz, 2.4GHz GHz band. At the supply voltage of 3.3V, the total current is 35.1mA in the frequency band of 1.2GHz, 2GHz and 2.4GHz. The SSB voltage conversion gains are 3.77dB, 4.97dB and 4.78dB, respectively. The output 1dB compression points are - 0.22dBm, 0.78dBm, 0.5dBm; The noise figure is respectively 5.13dB, 5.76dB, 6.67dB. The mixer is turned on and off by controlling the bias of the input transconductance stage. The on-time of the up-mixer is 200ns and the off-time is less than 100ns.