Conceptual Level Analog Circuit Modeling in VHDL-AMS as a Surrogate for Component Level Modeling


Abstract (Summary)
Hardware Description Languages (HDLs) are used to model a circuit before the circuit is designed and built. VHDL-AMS is one such language which allows modeling of circuits and systems in both the analog and digital modes or both. VHDL-AMS allows the description of any circuit or a system at various levels of abstraction such as the behavioral level or the component level. The behavioral level is a higher level of abstraction whereas the component level is a lower level of abstraction. The level of abstraction is chosen such that a desired accuracy is obtained in minimum time.This thesis aims at developing behavioral models that accurately represent the function and performance of the system modeled at the component level in the analog domain.The surrogate used to develop this aim is the Amplitude Modulation Superheterodyne receiver. The design tradeoff that is mainly considered is the tradeoff between the accuracy and the simulation time. This trade off is discussed by studying the effects of the abstraction models on the system performance. In fact, knowing the contributions to system performance accuracy by each subcircuit model, the designer could “dial in” the circuit models with the fastest execution time consistent with the system performance accuracy desired.
Bibliographical Information:


School:University of Cincinnati

School Location:USA - Ohio

Source Type:Master's Thesis



Date of Publication:01/01/2008

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