Title :
Accurate Fourier analysis for circuit simulators
Author :
Kundert, Kenneth S.
Author_Institution :
Cadence Design Syst. Inc., San Jose, CA, USA
Abstract :
A new approach to Fourier analysis within the context of circuit simulation is presented that is considerably more accurate and flexible than the traditional SPICE approach. It is based on the direct computation of the Fourier integral rather than on the discrete Fourier transform and so it is not subject to aliasing. It can be used to accurately compute a small number of Fourier coefficients for broad-spectrum signals such as those generated by mixers, ΣΔ and pulse-width modulators, DACs, and SC-filters. In addition, techniques that reduce errors and provide the ability to resolve harmonics 120 dB-140 d below the carrier are presented
Keywords :
Fourier analysis; Fourier transforms; circuit analysis computing; errors; harmonics; integration; interpolation; Fourier analysis; Fourier coefficients; Fourier integral; broad-spectrum signals; circuit simulators; direct computation; error reduction; harmonics; Analytical models; Circuit analysis; Circuit simulation; Computational modeling; Discrete Fourier transforms; Pulse generation; Pulse modulation; SPICE; Signal generators; Space vector pulse width modulation;
Conference_Titel :
Custom Integrated Circuits Conference, 1994., Proceedings of the IEEE 1994
Conference_Location :
San Diego, CA
Print_ISBN :
0-7803-1886-2
DOI :
10.1109/CICC.1994.379774
