An efficient Fourier transform algorithm for multitone harmonic balance

Author

Borich, Vuk ; East, Jack ; Haddad, George

Author_Institution

Dept. of Electr. Eng. & Comput. Sci., Michigan Univ., Ann Arbor, MI, USA

Volume

47

Issue

2

fYear

1999

fDate

2/1/1999 12:00:00 AM

Firstpage

182

Lastpage

188

Abstract

A novel Fourier transform technique is proposed for use in multitone harmonic-balance (HB) simulations. It is shown that computations of multitone distorted spectra reduce to efficient one-dimensional fast Fourier transform operations when certain relationships exist between the sampling rate and frequency components of the signal. The algorithm requires minimal initialization time and is readily incorporated into existing HE tools. It is especially useful when the number of input tones is very large, such as spectral regrowth and noise-power ratio simulations. The method is demonstrated on the example of a 5-GHz MESFET amplifier driven by a quadrature phase shift-keying modulated carrier

Keywords

Fourier transforms; MESFET circuits; circuit simulation; harmonic analysis; microwave circuits; nonlinear network analysis; Fourier transform algorithm; MESFET amplifier; distorted spectra; frequency components; initialization time; input tones; multitone harmonic balance; noise-power ratio simulations; quadrature phase shift-keying modulated carrier; sampling rate; spectral regrowth; Computational modeling; Distortion; Fast Fourier transforms; Fourier transforms; Frequency; Helium; MESFETs; Phase modulation; Sampling methods; Signal to noise ratio;

fLanguage

English

Journal_Title

Microwave Theory and Techniques, IEEE Transactions on

Publisher

ieee

ISSN

0018-9480

Type

jour

DOI

10.1109/22.744293

Filename

744293