Abstract
This chapter describes the different computer-aided design (CAD) programs to analyze the time- and frequency-domain behavior of the switched-mode, high-efficiency power amplifiers in different frequencies—from high frequencies to microwaves—including HB-PLUS and SPICE CAD tools for Class-D and Class-DE circuits and HEPA-PLUS, SPICE, and ADS CAD tools for Class-E circuits. The chapter discusses a detailed simulation example of a high-efficiency two-stage 1.75-GHz HBT MMIC power amplifier that uses microstrip transmission lines in the supply and load networks. The HB-PLUS CAD program can simulate and automatically optimize resonant and non-resonant half- or full-bridge circuits with a load that receives the output power driven through a load network. Various functions of HB-PLUS program are listed in the chapter.
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