| 摘要 |
An amplifier apparatus wherein a circuit constant (e.g., the capacitance value of a capacitor) can be controlled (optimized) in accordance with the output power of an amplifier in which the circuit constant has been so set as to satisfy E-class operational conditions. For this purpose, the amplifier apparatus comprises an amplifier (20) the circuit constant of which has been so set as to satisfy the E-class operational conditions; power determining means (17,18) for determining the output power of the amplifier; and a control means (19) that controls the circuit constant in accordance with the determined output power.
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