Kittipong Tripetch
Symbolic Analysis of Input Impedance of CMOS Floating Active Inductors with Application in Fully Differential Bandpass Amplifier
1612 - 1620
2013
7
12
International Journal of Electrical and Computer Engineering
https://publications.waset.org/pdf/9996685
https://publications.waset.org/vol/84
World Academy of Science, Engineering and Technology
This paper proposes a study of input impedance of 2 types of CMOS active inductors. It derives 2 input impedance formulas. The first formula is the input impedance of the grounded active inductor. The second formula is the input impedance of the floating active inductor. After that, these formulas can be used to simulate magnitude and phase response of input impedance as a function of current consumption with MATLAB. Common mode rejection ratio (CMRR) of the fully differential bandpass amplifier is derived based on superposition principle. CMRR as a function of input frequency is plotted as a function of current consumption.
Open Science Index 84, 2013