The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Modern communication systems are working on industrial, scientific and medical (ISM) radio frequency (RF) bands. Today most research and development activities in industrial companies and universities are concentrated to frequency bands between 1GHz and 24GHz up to 60GHz. For the construction of mixed-signal chips for cellular telephones and other wireless LAN applications (Bluetooth, HIPERLAN, etc...
In this work we present a novel approach for a non-linear systematic design flow for integrated VCO circuits based on the Andronov Hopf bifurcation analysis and perturbation theory. The approach allows to make an estimation of the tuning range, a stability analysis and a nonlinear calculation of the amplitude before the actual design phase. With our approach the VCO can be optimized regarding the...
In this paper, a novel model for single-bit internal quantizer SigmaDelta-modulators is presented. It is shown that this model can be used for an exact stability prediction of these systems. Furthermore, it is explained how the necessary computations can be performed in a numerically efficient way by means of a mixed integer linear program (MILP).
An alternative approach for designing fully integrated LC oscillators based on the Andronov-Hopf bifurcation analysis including a nonlinear overall-model for MOS transistors (EKV model) is introduced. In the presented procedure the capacitance of the VCO is described in terms of geometric transistor dimensions. This leads to an extended bifurcation analysis which considers only the widths and lengths...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.