Author/Authors :
Izadpanah Tous، Saber نويسنده Department of Electrical Engineering, Sadjad Institute of higher Education, Mashhad , , Behroozi، Mahmoud نويسنده Department of Electrical Engineering, Sadjad Institute of higher Education, Mashhad , , Kargaran، Ehsan نويسنده Microelectronic Laboratory, Sadjad Institute of Higher Education, Mashhad, Iran , , Nabovati، Hooman نويسنده Department of Electrical Engineering , Sadjad Institute of Higher Education, Mashhad , Iran. ,
Abstract :
All oscillators are periodically time varying systems, so to accurate phase noise calculation and simulation, time
varying model should be considered. Phase noise is an important characteristic of oscillator design. It defined as the
spectral density of the oscillator spectrum at an offset from the center frequency of the oscillator relative to the power
of the oscillator. In this paper, we study linear time invariant (LTI) and linear time variant (LTV) model’s to calculate
phase noise. Moreover, we propose a simple method for Impulse Sensitivity Function (ISF) calculation. Different
oscillators have been selected to evaluate the proposed method. Simulation results show that the proposed method is
simpler than other methods, and we can easily simulation ISF.
