Title :
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
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;
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
DOI :
10.1109/ISCAS.1999.780166
