The high frequency cascode amplifiers with the combined circuits of the inherent compensation of the cross capacitance of the output transistor and resistor of the load

The method of increasing (by 5÷10 times) of the voltage transfer ratio (Gain) of the broadband cascode amplifiers (BCA) with the passive load in the form of the relatively low-ohmic resistor (R1=0.5÷1 kOhm) is considered. The effect of the increase of the gain of BCA is provided due to the introduction of a special circuit of the inherent compensation R1. The architectures of BCA on the bipolar and CMOS transistors are suggested in which the circuits of compensation of R1 and the cross capacitance of the output transistor are combined. It increases the Gain and also enlarges the upper cutoff frequency of BCA (f_c) in those cases when the characteristic time of the cross capacitance dominates.