摘要
为了拓宽电流模单元电路结构在低压低功耗射频集成电路中的应用,研究把第二代电流传输器用作电抗器件和频率变换电路。以第二代电流传输器为核心,辅助予外围电路,构造从输入到输出端口不同性质传输阻抗的有源电容倍增器和有源电感,并且基于第二代电流传输器组合结构差异的分析,设计了集成频率变换电路。从理论上,推出有源电容倍增器和有源电感结构的合理性。仿真集成频率变换电路,结果表明对40 MHz以下正弦波倍频功能正确,且以100 kHz正弦波为调制信号和以10 MHz的正弦波为载波获得了双边带调幅信号。这为射频集成电路设计提供了新的思路。
In order to widen application of current mode cell circuit in low voltage low power RF IC, the second generation current conveyor （CCⅡ） was used for reactance devices and frequency conversion circuits. Taking CCII as the core, auxiliary to the external circuit, the active capacitance and active inductor with different transfer impedance from input to output ports were constructed. Based on structure difference analysis of CCⅡ, the integrated frequency conversion circuit was designed. Theoretically, the rationality of active capacitance multiplier and active inductor was derived, and the integrated frequency conversion circuit was simulated. The results show that function is properly in case sine wave frequency below 40MHz. Theremore, taking the 100 kHz sine wave as the modulating signal and 10MHz sine wave as the carrier to obtain a double sideband signal by Simulation. A novel idea for designing RF IC is provided.
出处
《现代电子技术》
2011年第10期203-205,共3页
Modern Electronics Technique
基金
陕西省教育厅项目(08JK487)
