Andreas Wilde

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The delay-locked loop (DLL) is an appropriate device to guarantee fine synchronization for directsequence spread spectrum systems. For the performance analysis at low signal to noise ratios the mean time to lose lock (MTLL) represents the most important criterion. In this paper, the MTLL of the second-order extended tracking range DLL is investigated. A(More)
Functional aspects as well as the influence of integration technology on the system behavior have to be considered in the 3D integration design process of micro systems. Therefore, information from different physical domains has to be provided to designers. Due to the variety of structures and effects of different physical domains, efficient modeling(More)
In this article, we take a closer look at interoperability and conformance aspects when using 3GPP IMS, ETSI TISPAN NGN, and related OMA service enablers. Considering the increasingly important role of 3GPP IMS within mobile and NGN (next generation network) contexts, we highlight the importance of interoperability and conformance testing of IMS products
In spread spectrum systems the delay-locked loop is commonly used to track the spreading code. A problem is to design the delay-locked loop to be both accurate and robust against disturbances which normally requires a tradeoff. The use of extended tracking range delay-locked loops increases the ability of the system to maintain lock even for large Doppler(More)
This paper deals with the concept of how to integrate results of multi physics investigation of 3D stacks into modern comprehensive 3D data structures. Beside a description of modern 3D data structures and methods for floorplanning and Place&Route, approaches for multi physics modeling are introduced. The extension of the layout optimization process by(More)
The determination of functional parameters of miniaturized electromechanical components, e.g. micro relays, is a crucial task in production process. For actuators like relays the positions of moving parts and the forces during travel and at the end positions, respectively, are very important quantities. Today, a direct method using a mechanical sensing(More)
An electro-magnetic relay model is setup using a generalized Kirchhoff-network approach. The model features several mechanical nonlinear elements (stops), a nonlinear model for magnetization based on the Jiles-Atherton model and a nonlinear model for the non homogeneous magnetization of the anchor at the air gap. The model is tested using different voltage(More)
There is an increasing demand for simulation strategies for electro-thermal analysis of electronic systems. In this study cases are investigated, where self induced thermal dynamics influence the electrical behavior of the device. A method for generation of thermal models is proposed, which requires coarse information on layout while allowing evaluation(More)