| 摘要 |
Switching power amplifier circuits for use in a frequency range from 0.5 MHz to 100 MHz are described. The power amplifier circuits have power field effect transistor (FET) devices as output components and the FET devices are driven by bipolar transistor devices without frequency limiting components. The power amplifier circuits can be coupled in parallel and the coupled amplifier circuits can be operated in a push-pull mode of operation for increased power. The systems using these amplifier devices can operate in a Class A, B, C, D, E, F and S modes. In particular, a Class D amplifier system is described that uses the switching power amplifier circuits in the extended frequency range.
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