A fixed-point harmonic balance approach for circuit simulation under modulated carrier excitation

Author

Borich, Vuk ; East, Jack ; Haddad, George

Author_Institution

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

Volume

6

fYear

1999

fDate

36342

Firstpage

346

Abstract

We present a new circuit simulation approach aimed at circuit analysis under modulated carrier excitation. Although based on the harmonic-balance technique, the method efficiently handles large multitone simulation tasks that are encountered in quasiperiodic approximations to digitally modulated carriers. The development is motivated by the Accelerated Fixed-Point algorithm of Tait (1994), which is reformulated to include any number of nonlinear devices, and modified to improve the convergence properties. The proposed algorithm is applied to the spectral regrowth analysis of a microwave amplifier driven by a QPSK-modulated carrier

Keywords

circuit simulation; convergence of numerical methods; equivalent circuits; microwave amplifiers; modulation; nonlinear network analysis; quadrature phase shift keying; spectral analysis; QPSK-modulated carrier; accelerated fixed-point algorithm; circuit analysis; circuit simulation; convergence properties; digitally modulated carriers; fixed-point harmonic balance approach; large multitone simulation tasks; microwave amplifier; modulated carrier excitation; nonlinear devices; quasiperiodic approximations; spectral regrowth analysis; Circuit simulation; Convergence; Lifting equipment; Linear systems; Microwave circuits; Microwave devices; Radio frequency; Radiofrequency amplifiers; Spectral analysis; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 1999. ISCAS '99. Proceedings of the 1999 IEEE International Symposium on

Conference_Location

Orlando, FL

Print_ISBN

0-7803-5471-0

Type

conf

DOI

10.1109/ISCAS.1999.780166

Filename

780166