Instability Analysis of a Microwave Voltage-Controlled Oscillator
Date Issued
2014
Date
2014
Author(s)
Chen, Yin-Yi
Abstract
This thesis presents the instability analyses using various linear methods including impedance, admittance, reflection coefficient, stability factor, and normalized determinant function (NDF).
Instability of oscillator is usually analyzed with impedance, admittance, reflection coefficient, stability factor K-Δ and μ, but the Rollet proviso should be satisfied. Therefore, the use of circuit network determinant to analyze the oscillator instability through NDF is applicable.
On the voltage controlled oscillator design, we firstly investigate the various configurations of transistor and its feedback network. Various linear methods are then applied to perform the instability analysis with the help of MWO microwave software. Although the measurement result of oscillation frequency is not consistent to that of the simulation result, it is close to the possible oscillation frequency shown in the simulation.
Subjects
不穩定性
壓控
微波振盪器
正規行列式函數
Type
thesis
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