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由于可调谐第二代电流传输器调谐因子较窄以及电流控制的第二代电流传输器x端内部可控电阻rx受温度影响很大的问题,对可调谐的第二代电流传输器进行研究。引入2个电流增益可控的共源共栅电流镜放大电路和1个电压-电流转换器,提出了一种由电压控制的可线性调谐的第二代电流传输器,使电流增益能够通过外部电压之比连续可调谐。在3.3 V供电电源条件下,采用TSMC 0.35μm CMOS工艺参数对其进行Spectre模拟,结果表明,电压增益(vx/vy)及电流增益(ix/iz)的-3 dB带宽分别为400和101~412 MHz,电流增益调谐因子0≤k≤10.8,电路总谐波失真在3%以内,电路静态功耗为3.2 mW。
Due to the narrower tuning factor of the tunable second-generation current transmitter and the temperature-dependent influence of the controllable resistor rx on the x-side of the current-controlled second-generation current transmitter, a tunable second-generation current transmitter is studied . The introduction of two current gain controllable cascode current-mirror amplifier and a voltage-current converter proposed a voltage-controlled, linearly tunable second-generation current transmitter that allows current gain to pass externally The voltage ratio is continuously tunable. Spectral simulation of TSMC 0.35μm CMOS process with 3.3V power supply shows that the -3dB bandwidth of voltage gain (vx / vy) and current gain (ix / iz) are 400 and 101 ~ 412 MHz, the current gain tuning factor 0≤k≤10.8, the total harmonic distortion of the circuit is within 3%, and the static power consumption of the circuit is 3.2 mW.