International Journal of Circuits, Systems and Signal Processing

E-ISSN: 1998-4464
Volume 15, 2021

Notice: As of 2014 and for the forthcoming years, the publication frequency/periodicity of NAUN Journals is adapted to the 'continuously updated' model. What this means is that instead of being separated into issues, new papers will be added on a continuous basis, allowing a more regular flow and shorter publication times. The papers will appear in reverse order, therefore the most recent one will be on top.

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Volume 15, 2021

Title of the Paper: Analysis and Design of a CMOS Common-Source Cross Coupled Amplifier with NMOS only Active Inductor


Authors: Kittipong Tripetch, Parkpoom Khanthawiworn

Pages: 1632-1642 

DOI: 10.46300/9106.2021.15.176     XML


Abstract: The polynomial form of the input impedance of a CMOS cross-coupled amplifier with NMOS only active inductor are proposed. The formula of polynomial form and novel coefficients are programmed in Scilab and MATLAB so that the pole position of the fourth order polynomial can be found. From experience of a simple cross coupled oscillator design, the proposed circuit diagram may not oscillate as a triangular wave signal because the two poles are complex (underdamped case) but its real part could not be minimized to 0.001 so that it has a stable amplitude and additional two poles are real poles. The impulse sensitivity function (ISF) of the proposed circuit is derived for the first time so that it may be used to derive phase noise in the future.