کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9511605 | 1632219 | 2005 | 16 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Multi time scale differential equations for simulating frequency modulated signals
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
ریاضیات
ریاضیات محاسباتی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Radio-frequency (RF) circuits produce quasiperiodic signals with widely separated time scales. In the case of autonomous time scales, frequency modulation occurs in addition to amplitude modulation. A multidimensional signal model yields an efficient numerical simulation by computations via a multirate partial differential algebraic equation (MPDAE) with periodic boundary conditions. We present a time domain method for these systems, which integrates along characteristic curves and thus is consistent with the inherent information transport. Moreover, we propose a special choice for additional boundary conditions, which are necessary to determine local frequencies. Test results confirm that the constructed techniques compute efficiently frequency modulated quasiperiodic signals in RF applications.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Numerical Mathematics - Volume 53, Issues 2â4, May 2005, Pages 421-436
Journal: Applied Numerical Mathematics - Volume 53, Issues 2â4, May 2005, Pages 421-436
نویسندگان
R. Pulch,